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1<HTML>
2<HEAD>
3<TITLE>Geant4 8.1 Release Notes</TITLE>
4</HEAD>
5<BODY BGCOLOR='F0F0F0'>
6
7<P> </P>
8<BR>
9<P> </P>
10
11<P ALIGN="Center">
12<FONT SIZE="+4" COLOR="#238E23">
13<B>Geant4 8.1 Release Notes</B>
14</FONT>
15
16<TABLE WIDTH="100%">
17<TR><TD ALIGN="Right">
18<FONT SIZE="-1" COLOR="#5C3317">
19<B><I>June 30<SUP>th</SUP>, 2006</I></B>
20</FONT>
21</TD></TR>
22</TABLE>
23
24<BR><BR>
25<HR ALIGN="Center" SIZE="7%">
26<P>
27The code and binary libraries for the supported systems are available
28through our <A TARGET="ext" HREF="http://cern.ch/geant4/support/download.shtml">Source
29Code Web page</A>.
30</P>
31<P>
32Please refer to the
33<A TARGET="ext" HREF="http://cern.ch/geant4/G4UsersDocuments/Overview/html">Geant4
34User Documentation</A> for further information about using Geant4.
35</P>
36
37<H2><I>Contents</I></H2>
38<OL>
39<LI><A HREF="#1.">Supported and Tested Platforms</A></LI>
40<LI><A HREF="#2.">AIDA and CLHEP</A></LI>
41<LI><A HREF="#3.">Known Run-Time Problems</A></LI>
42<LI><A HREF="#4.">Compilation Warnings</A></LI>
43<LI><A HREF="#5.">Known Run-Time Warnings</A></LI>
44<LI><A HREF="#6.">Items for migration of the user code</A></LI>
45<LI><A HREF="#7.">Geant4 Software License</A></LI>
46<LI><A HREF="#8.">Detailed list of changes and fixes</A></LI>
47</OL>
48
49<P> </P>
50<A NAME="1."></a>
51<HR>
52
53<!-- ============================================== -->
54
55<H2>1. Supported and Tested Platforms</H2>
56
57Official platforms:
58<UL>
59<LI>SUN Solaris 5.8, C++ CC-5.4 Patch 111715-02.</LI>
60<LI>Linux, gcc 3.2.3 or gcc 3.4.5.<BR>
61    This configuration was tested on <I>32 bits architectures (Intel)</I>
62    and <I>64 bits architectures (AMD)</I> with the Scientific Linux CERN 3
63    (SLC3) distribution (based on RedHat Linux Enterprise 3) and
64    Scientific Linux CERN 4 (SLC4) distribution (based on RedHat Linux
65    Enterprise 4).
66    Versions of Geant4 have also been compiled successfully on other
67    Linux distributions, like Debian, Suse or other RedHat systems.</LI>
68<LI>Windows/XP and CygWin Tools with: Visual C++ 7.1 .NET</LI>
69</UL>
70
71More verified configurations:
72<UL>
73<LI>SUN Solaris 5.8, C++ CC-5.5</LI>
74<LI>Linux, gcc-4.1.1</LI>
75<LI>Linux, Intel-icc 8.0</LI>
76<LI>MacOS 10.4, gcc-4.0.1</LI>
77<LI>Windows/XP and CygWin Tools with: Visual C++ 8.0 (Visual Studio 2005)</LI>
78</UL>
79
80Platforms configured but not tested and not supported:
81<UL>
82<LI>AIX 4.3.2, xlC 6.0</LI>
83<LI>DEC V4.0, cxx C++ V6.1-027</LI>
84<LI>HP 10.20, aCC C++ B3910B A.01.23</LI>
85<LI>SGI V6.5.5, CC 7.2.1</LI>
86</UL>
87
88<P> </P>
89<A NAME="2."></A>
90<HR>
91
92<!-- ============================================== -->
93
94<H2>2. AIDA and CLHEP</H2>
95
96Geant4 8.1 requires the installation of
97<A TARGET="ext" HREF="http://cern.ch/clhep">CLHEP</A>.<BR>
98Tests have been performed with <B>CLHEP-1.9.2.3</B><BR>
99The software has been verified also with <B>CLHEP-2.0.2.3</B>.<BR>
100<P> </P>
101Geant4 8.1 examples with histogramming cowork with AIDA 3.2.1
102implementations. These include:
103<UL>
104<LI><A TARGET="ext" HREF="http://cern.ch/PI">PI</A> and included components</LI>
105<LI><A TARGET="ext" HREF="http://jas.freehep.org">JAS (Java Analysis Studio)</A></LI>
106<LI><A TARGET="ext" HREF="http://www.lal.in2p3.fr/OpenScientist">Open Scientist</A></LI>
107</UL>
108
109AIDA headers can be downloaded from:
110<A TARGET="ext" HREF="http://aida.freehep.org">http://aida.freehep.org</A>
111
112
113<P> </P>
114<A NAME="3."></A>
115<HR>
116
117<!-- ============================================== -->
118
119<H2>3. Known Run-Time Problems and Limitations</H2>
120
121For a complete list of outstanding run-time problems and to submit any
122problem you may find running this version of Geant4, please refer to the
123<A TARGET="ext" HREF="http://cern.ch/geant4/problemreport">Geant4 Problem Reporting
124System</A>.
125
126
127<P> </P>
128<A NAME="4."></A>
129<HR>
130
131<!-- ============================================== -->
132
133<H2>4. Compilation Warnings</H2>
134
135There may be compilation warnings on some platforms.  We do not believe
136that any will lead to incorrect run-time behaviour.
137
138
139<P> </P>
140<A NAME="5."></A>
141<HR>
142
143<!-- ============================================== -->
144
145<H2>5. Known Run-Time Warnings</H2>
146
147The following message can be written to error output while tracking.
148We believe it does not give rise to incorrect behaviour.
149<PRE>
150    G4PropagateInField: Warning: Particle is looping
151    -  tracking in field will be stopped.
152       It has performed 1000 steps in Field while a maximum of 1000
153       are allowed.
154</PRE>
155
156
157<P> </P>
158<A NAME="6."></A>
159<HR>
160
161<!-- ============================================== -->
162
163<H2>6. Items for migration of the user code</H2>
164
165Some migrations may be necessary for advanced uses of features in Geant4
166in order to upgrade from release 8.0 to release 8.1. Note that a full reinstallation
167of libraries (or a full recompilation) and a recompilation of user applications
168is required.
169
170<P> </P>
171<B>Standard Electromagnetic physics</B>
172<P> </P>
173Some improvements are introduced to multiple scattering.
174As a consequence of these changes in the model, the following applies in
175this release:
176<UL>
177<LI>the simulation of the back-scattering is improved;</LI>
178<LI>the scattering in very thin layers is better than the one in version 8.0;</LI>
179<LI>the tail of the angular distribution is now material dependent;</LI>
180<LI>the visible energy in sampling calorimeters is less sensitive
181    to the value of the production threshold.</LI>
182</UL>
183It has been reintroduced the option to utilise smaller cuts in vicinity of
184the geometrical boundary. The <I>subcutoff</I> option has been verified for
185a number of simplified sampling calorimeter setups.
186The simulation of ionization for ions was also improved. The data from NIST
187databases for protons and helium ion and ICRU73 data for the carbon ion are
188included for the first time. An interface to add user data on stopping
189power for particular ion in particular media is provided.<BR>
190A new version of the Synchrotron radiation is released.<BR>
191The user interfaces allowing to set/access EM options, cross sections and
192stopping powers are extended and improved.
193
194<P> </P>
195<B>Hadronic physics: Bertini Cascade</B>
196<P> </P>
197In this release, the <TT>G4BERTINI_KAON</TT> conditional assembly flag has
198been removed from the Bertini Cascade code, so that it is no longer needed
199for the user to set them to instruct Bertini handling of strange particles.
200
201<P> </P>
202<B>Physics Lists</B>
203<P> </P>
204Physics lists are updated in order to utilize recent developments
205in hadronic and electromagnetic physics. In particular, the more advanced
206model sampling of capture of negatively charged hadrons at rest is used.
207The new elastic process combining available models of elastic scattering
208is introduced with significant improvement of elastic scattering on
209hydrogen; the Binary and Bertini cascade developments are also utilized.
210
211<P> </P>
212<A NAME="7."></A>
213<HR>
214
215<!-- ============================================== -->
216
217<H2>7. Geant4 Software License</H2>
218
219As from this release, a new Software License applies to the Geant4 code.
220The details and the list of copyright holders is available at
221<A href="http://cern.ch/geant4/license">http://cern.ch/geant4/license</A>
222and also in a text file <TT>LICENSE</TT> distributed with the source code.
223
224<P> </P>
225<A NAME="8."></A>
226<HR>
227
228<!-- ============================================== -->
229
230<H2>8. Detailed list of changes and fixes</H2>
231
232These are the main new features/fixes included in this release since the
233last patched public release (for the detailed list of fixes/additions,
234please refer to the related History files provided in most packages):
235
236<P> </P>
237
238<A NAME="conf-notes">
239<H3><I>Configuration</I></H3></A>
240<UL>
241<LI><TT>Configure</TT> script:
242  <UL>
243  <LI>Automatically set <TT>LD_LIBRARY_PATH</TT> for shared libraries
244      and binary <TT>PATH</TT> to binaries in the scripts.</LI>
245  <LI>Fixed problem on setting shared libraries and corrected setting of
246      <TT>OGLHOME</TT> for MacOSX.</LI>
247  <LI>Fixed typo for <TT>RAYTRACERX</TT>.</LI>
248  <LI>Fixed problem in caching of DATA paths.</LI>
249  <LI>Correct check/set for OpenInventor visualization driver.</LI>
250  <LI>Probe for existance of X11, XM, XAW.</LI>
251  </UL></LI>
252<LI><TT>Darwin-g++</TT>: corrected linker options for generation of dynamic
253    libraries. Now dynamic libraries on MacOSX work correctly. Tested on
254    MacOS 10.4 with gcc-4.0.1.</LI>
255<LI>Removed defaults for X11, XM, XAW flags in <TT>architecture.gmk</TT>
256    and added explicit settings in architecture specific setups protected
257    for optional customisation.</LI>
258<LI><TT>binmake.gmk</TT>: fixed old-standing warning on WIN32-VC for file
259    extension of target object file.</LI>
260</UL>
261
262<A NAME="emlow-notes">
263<H3><I>Electromagnetic Processes (Low-energy)</I></H3></A>
264<UL>
265<LI>New developments (Beta release): photoelectric angular distribution
266    models Geant4-DNA for very lowE physics processes in water.
267    The present version of the DNA processes is meant as a first beta
268    release; cannot be considered suitable for physics application yet.</LI>
269</UL>
270
271<A NAME="emstd-notes">
272<H3><I>Electromagnetic Processes (Standard)</I></H3></A>
273<UL>
274<LI><B>Standard</B>
275    <UL>
276    <LI>Substituted method <TT>SetStepLimits()</TT> by
277        <TT>SetStepFunction()</TT> in all energy loss processes.</LI>
278    <LI>Moved initialization of default values to constructors of all models
279        and processes to fix problems at initialization for the case of many
280        runs in one macro.</LI>
281    <LI><TT>G4MultipleScattering</TT>:
282        <UL>
283        <LI>Step limit calculation moved to model part <TT>G4UrbanMscModel</TT>.</LI>
284        <LI>Changed values of data members 'tkinlimit', 'factail';
285        <LI>Providing possibility of reinitialization of 'facrange' and
286            'steppingAlgorithm' parameters between runs;
287        <LI>Changed default value of 'facgeom' (4 -> 3.5)
288        <LI>Added set function for data member <TT>factail</TT>; <TT>z</TT>
289            sampling by default.</LI>
290        </UL></LI>
291    <LI><TT>G4MscModel</TT> renamed <TT>G4UrbanMscModel</TT>:
292        <UL>
293        <LI>Changed the value of the parameter <TT>theta0</TT>,
294            improved scattering in thin layers.</LI>
295        <LI>Changes in <TT>ComputeTruePathLengthLimit()</TT>:
296            modified 'scaling' of <TT>facrange</TT> for high energies,
297            data member <TT>tlimitmin = max(lambda0/25, 5 nm)</TT>.</LI>
298        <LI>Changes in <TT>SampleCosineTheta()</TT>, changed tail of angular
299            distribution.</LI>
300        <LI>Removed some data members and code cleaning; revised <TT>z</TT>
301            sampling.</LI>
302        <LI>Now computing transport cross section and not mfp.</LI>
303        <LI>Bug fix in the <TT>SampleCosineTheta()</TT> method and fixed a
304            problem of non-initialized variable.</LI>
305        <LI>Make stepping algorithm be active for ions by default.</LI>
306        </UL></LI>
307    <LI><TT>G4MscModel71</TT>: now computing transport cross section and not
308        mfp.</LI>
309    <LI>Added first test-prototype classes of elastic Coulomb scattering:
310        <TT>G4eCoulombScatteringModel</TT>, <TT>G4CoulombScatteringModel</TT>,
311        <TT>G4CoulombScattering</TT>.</LI>
312    <LI><TT>G4PolarizedComptonScattering</TT>, <TT>G4ComptonScattering52</TT>,
313        <TT>G4hIonisation52</TT>, <TT>G4eIonisation52</TT>,
314        <TT>G4eBremsstrahlung52</TT>: methods
315        <TT>ComputeCrossSectionPerAtom()</TT> and
316        <TT>ComputeRestrictedMeandEdx()</TT> are now public.</LI>
317    <LI><TT>G4BraggModel</TT>, <TT>G4BraggIonModel</TT>,
318        <TT>G4eeToTwoGammaModel</TT>, <TT>G4MollerBhabhaModel</TT>
319        <TT>G4BetheBlochModel</TT>, <TT>G4PEEffectModel</TT>,
320        <TT>G4eBremsstrahlungModel</TT>: added functions
321        <TT>ComputeCrossSectionPerElectron/Atom()</TT>.</LI>
322    <LI><TT>G4MollerBhabhaModel</TT>: fixed computation of <TT>MinEnergyCut</TT>,
323        important for <TT>dEdx</TT> calculation with small cut value (< 10 mum)
324        in media with high Z (like lead).</LI>
325    <LI><TT>G4hIonisation</TT>: added mass and spin effects (important for
326        pion ionization at high and moderate energies).</LI>
327    <LI><TT>G4BetheBlochModel</TT>: use different formula for muons and hadrons
328        for max energy transfer to delta-electrons (taking into account hadron
329        size effects, important for ionization of very energetic hadrons).</LI>
330    <LI><TT>G4BraggModel</TT> and <TT>G4BraggIonModel</TT>: added usage of the
331        new classes <TT>G4ASTARStopping</TT> and <TT>G4PSTARStopping</TT> with
332        NIST data on stopping powers.</LI>
333    <LI><TT>G4PAIModel</TT> and <TT>G4PAIPhotonModel</TT>:
334        <UL>
335        <LI>Fixed cases of NaN value for delta direction when zero cut.</LI>
336        <LI>Fixed problem for low energy hadrons.</LI>
337        <LI>Providing hiding of some technical verbose messages.</LI>
338        </UL></LI>
339    <LI><TT>G4ionIonisation</TT>:
340        <UL>
341        <LI>Moved <TT>G4LossTableManager::Instance()->EmCorrections()</TT>
342            to constructor to avoid problems at initialization for many runs
343            in one macro.</LI>
344        <LI>Added usage of the new class <TT>G4WaterStopping</TT> for light
345            ion stopping in water.</LI>
346        <LI>Added a possibility to use user data on stopping power.</LI>
347        </UL></LI>
348    <LI><TT>G4BetheHeitlerModel</TT>: removed obsolete function
349        <TT>InitialiseCrossSectionPerAtom()</TT>.</LI>
350    <LI><TT>G4eBremsstrahlung</TT>: use <TT>gammaThreshold</TT> from
351        <TT>G4LossTableManager</TT> for more easier initialization (CMS
352        request).</LI>
353    <LI><TT>G4eBremsstrahlungModel</TT>:
354        <UL>
355        <LI>Fixed problem of initialization in the case when cuts are not
356            defined (needed for extrapolation and for unit tests).</LI>
357        <LI>Fixed problem of energy loss calculation below <TT>10 MeV</TT>.</LI>
358        </UL></LI>
359    <LI><TT>G4KleinNishinaModel</TT>: removed upper energy limit to have a
360        smooth cross section.</LI>
361    <LI><TT>G4eplusAnnihilation</TT>: removed cut dependence in
362        <TT>AtRestDoIt()</TT>.</LI>
363    <LI>Removed obsolete <TT>G4SCProcessorStand</TT> class.</LI>
364    </UL></LI>
365<LI><B>Muons</B>
366    <UL>
367    <LI>Substituted method <TT>SetStepLimits()</TT> by
368        <TT>SetStepFunction()</TT> in all energy loss processes.</LI>
369    <LI>Moved initialization of default values to constructors of all models
370        and processes to fix problems at initialization for the case of many
371        runs in one macro.</LI>
372    <LI><TT>G4MuBetheBlochModel</TT>, <TT>G4MuBremsstrahlungModel</TT> and
373        <TT>G4MuPairProductionModel</TT>: added functions
374        <TT>ComputeCrossSectionPerElectron/Atom()</TT>.</LI>
375    <LI><TT>G4MuIonisation52</TT>, <TT>G4MuBremsstrahlung52</TT>,
376        <TT>G4MuPairProduction52</TT>: method
377        <TT>ComputeMicroscopicCrossSection()</TT> is now public.</LI>
378    <LI><TT>G4MuBremsstrahlungModel</TT>: fixed problem of initialization in
379        the case when cuts are not defined (needed for extrapolation and for
380        unit tests).</LI>
381    <LI><TT>G4EnergyLossForExtrapolator</TT>:
382        <UL>
383        <LI>Fixed bug in units.</LI>
384        <LI>Added muon tables.</LI>
385        <LI>Moved initialization from the constructor to the first public
386            call; added verbose variable into constructor.</LI>
387        </UL></LI>
388    </UL></LI>
389<LI><B>HighEnergy</B>
390    <UL>
391    <LI>Moved initialization of default values to constructors of all models
392        and processes to fix problems at initialization for the case of many
393        runs in one macro.</LI>
394    </UL></LI>
395<LI><B>Utils</B>
396    <UL>
397    <LI><TT>G4EmProcessOptions</TT>:
398        <UL>
399        <LI>Added method <TT>SetLPMFlag()</TT> in order to set flag of LPM
400            effect.</LI>
401        <LI>Added method <TT>SetBremsstrahlungTh()</TT> (CMS request).</LI>
402        <LI>Added method <TT>SetBuildCSDARange()</TT>.</LI>
403        </UL></LI>
404    <LI><TT>G4EnergyLossMessenger</TT>: added commands
405        <TT>MscStepLimitation</TT>. <TT>CSDARange</TT> and <TT>LPM</TT>.</LI>
406    <LI><TT>G4VEnergyLossProcess</TT>:
407        <UL>
408        <LI>Subcutoff calculation significantly updated, results of tests
409            show that this regime can be used for sampling calorimeters.</LI>
410        <LI>Added option to sample range straggling at the last step
411            of a particle.</LI>
412        <LI>Reset <TT>currentCouple</TT> when StepFunction is changed (fixed
413            initialization problem for case of many runs in a macro).</LI>
414        <LI>Added store energy loss tables for bremsstrahlung.</LI>
415        <LI>Added method <TT>SetDynamicMassCharge()</TT>, used by
416            ionIonisation; make use of flag <TT>isIonisation</TT> in
417            AlongStep, PrintInfo, and StoreTables (needed for
418            activate/inactivate regime).</LI>
419        <LI>Added <TT>GetModelByIndex()</TT> and NumberOfModels()</TT>
420            methods.</LI>
421        <LI>Fixed extra cout for heavy ions in gas.</LI>
422        <LI>Renamed in all places <TT>PreciseRange</TT> to <TT>CSDARange</TT>.</LI>
423        <LI>Substituted <TT>SetStepLimits()</TT> with <TT>SetStepFunction()</TT>.</LI>
424        <LI>Improved printout.</LI>
425        <LI>Remove <TT>minStepLimit</TT> member and use <TT>finalRange</TT>.</LI>
426        </UL></LI>
427    <LI><TT>G4VEmProcess</TT>:
428        <UL>
429        <LI><TT>ComputeCrossSectionPerAtom()</TT>: put default value
430            <TT>A=0</TT>, to keep compatibility with version 5.2.</LI>
431        <LI>Added <TT>GetModelByIndex()</TT> and <TT>NumberOfModels()</TT>
432            methods.</LI>
433        <LI>Removed dependence on <TT>G4NistManager</TT>.</LI>
434        </UL></LI>
435    <LI><TT>G4VMultipleScattering</TT>:
436        <UL>
437        <LI>Added <TT>GetModelByIndex()</TT> and <TT>NumberOfModels()</TT>
438            methods.</LI>
439        <LI>Lambda table keeps now cross section and not mfp.</LI>
440        </UL></LI>
441    <LI><TT>G4VEmModel</TT>:
442        <UL>
443        <LI><TT>ComputeCrossSectionPerAtom()</TT>: put default value
444            <TT>A=0</TT>, to keep compatibility with version 5.2.</LI>
445        <LI>Added method <TT>ComputeMeanFreePath()</TT>.</LI>
446        <LI>Optimized interfaces to multiple-scattering model.</LI>
447        </UL></LI>
448    <LI><TT>G4LossTableManager</TT>:
449        <UL>
450        <LI>Added methods <TT>SetMscStepLimitation()</TT>,
451            <TT>FacRange()</TT>, and <TT>MscFlag()</TT>.</LI>
452        <LI>Substituted <TT>PreciseRange</TT> with <TT>CSDARange</TT>.</LI>
453        <LI>Fixed logic to ensure rebuilding of PhysicsTable in the regime
454            of activate/deactivate processes.</LI>
455        <LI>Set flag <TT>isIonisation</TT> for a process holding table with
456            sum of <TT>dEdx</TT> and added flag of LPM effect.</LI>
457        <LI>Added Get/SetBremsstrahlungTh() methods (CMS request).</LI>
458        </UL></LI>
459    <LI><TT>G4EmTableType</TT> enumerator is added to reduce code duplication
460        inside <TT>G4LossTableManager</TT>, <TT>G4VEnergyLossProcess</TT> and
461        other classes.</LI>
462    <LI><TT>G4EmCorrections</TT>:
463        <UL>
464        <LI>Substituted <TT>PreciseRange</TT> with <TT>CSDARange</TT>.</LI>
465        <LI>Introduced an option to peak up user data for stopping power
466            for particular ion and media.</LI>
467        <LI>Added finite size correction - important for high energy
468            hadrons and ions.</LI>
469        <LI>Cleanup of the code.</LI>
470        </UL></LI>
471    <LI><TT>G4EmCalculator</TT>:
472        <UL>
473        <LI>Added <TT>GetCSDARange()</TT> method.</LI>
474        <LI>Corrections/bug fixes in <TT>GetCrossSectionPerVolume()</TT>,
475            <TT>GetCrossSectionPerAtom()</TT> and
476            <TT>ComputeCrossSectionPerAtom()</TT>.</LI>
477        <LI>Added public methods <TT>ComputeTotalDEDX()</TT> and
478            <TT>ComputeElectronicDEDX()</TT>; updated <TT>GetDEDX()</TT>
479            for ions.</LI>
480        <LI>Fixed problem for gammas concerning
481            <TT>GetCrossSectionPerVolume()</TT>.</LI>
482        </UL></LI>
483    <LI><TT>G4ionEffectiveCharge</TT>: extended upper limit to <TT>50 MeV</TT>
484        (important for ions with large Z).</LI>
485    <LI>Added dummy class <TT>G4DummyModel</TT>.</LI>
486    <LI>Removed obsolete interface class <TT>G4VSCProcessor</TT>.</LI>
487    </UL></LI>
488<LI><B>Xrays</B>
489    <UL>
490    <LI><TT>G4TransitionRadiation</TT>:
491        <UL>
492        <LI>New algorithm for XTR angular distribution based on the transparent
493            regular radiator. The method can help for more precise estimation
494            of XTR angular distribution needed in tracking applications of XTR
495            detectors (ATLAS request).</LI>
496        <LI>Updated tested algorithm for XTR angular distribution based on the
497            transparent regular radiator. The method takes into account the
498            angular distribution for given energy and gets activated by
499            <TT>SetAngleRadDistr(true)</TT> method just after the construction
500            of XTR object.</LI>
501        <LI>Tuned angular distribution of XTR according to transparent regular
502            approximation.</LI>
503        </UL></LI>
504    <LI><TT>G4SynchrotronRadiation</TT>:
505        <UL>
506        <LI>Moved to module <TT>xrays</TT> from <TT>standard</TT>.</LI>
507        <LI>Split in two processes: <TT>G4SynchrotronRadiation</TT> and
508            <TT>G4SynchrotronRadiationInMat</TT>, the first using analytical
509            solution for description of the gamma spectrum, the second one
510            using numerical integration.</LI>
511        <LI>Introduced new methods for angular distribution.</LI>
512        <LI>Updated methods for calculation of integral number spectrum.</LI>
513        <LI>Enhanced to set polarization and work with local magnetic-fields
514            attached to single volumes.</LI>
515        <LI>Fixed bug for unit polarization in <TT>PostStepDoIt()</TT>.</LI>
516        </UL></LI>
517    </UL></LI>
518</UL>
519
520<A NAME="evt-notes">
521<H3><I>Event</I></H3></A>
522<UL>
523<LI><TT>G4EventManager</TT>:
524    <UL>
525    <LI>Now setting pointer to <TT>G4Event</TT> before the state is
526        changed.</LI>
527    <LI>Storing inside the event the random number status.</LI>
528    </UL></LI>
529<LI>Imported <TT>G4RayShooter</TT> class from the visualization RayTracer
530    module.</LI>
531<LI>Minor fix in alternative <TT>G4ParticleGun</TT> constructor.</LI>
532</UL>
533
534<A NAME="gen-notes">
535<H3><I>General Processes: Management, Cuts, Optical</I></H3></A>
536<UL>
537<LI><B>Management</B>
538    <UL>
539    <LI>Extended signature of <TT>G4WrapperProcess::StartTracking()</TT>
540        to take <TT>G4Track*</TT> as argument.</LI>
541    </UL></LI>
542<LI><B>Cuts</B>
543    <UL>
544    <LI>Fixed memory leak in <TT>G4VRangeToEnergyConverter::BuildLossTable()</TT>,
545        fixing a problem detected and reported by ATLAS.</LI>
546    <LI>Fixed memory leak in <TT>G4ProductionCutsTable</TT> and
547        <TT>G4PhysicsTableHelper</TT>.</LI>
548    </UL></LI>
549<LI><B>Optical</B>
550    <UL>
551    <LI>Fix default behaviour for unified model of dielectric_metal.
552        Addresses problem report #842.</LI>
553    <LI>The WLS time delay can now be a delta function or exponential.
554        New classes: <TT>G4VWLSTimeGeneratorProfile</TT>,
555        <TT>G4WLSTimeGeneratorProfileDelta</TT> and
556        <TT>G4WLSTimeGeneratorProfileExponential.</TT></LI>
557    </UL></LI>
558</UL>
559
560<A NAME="geo-notes">
561<H3><I>Geometry</I></H3></A>
562<UL>
563<LI><B>Divisions</B>
564    <UL>
565    <LI>Revised text in G4Exceptions thrown by various classes.</LI>
566    </UL></LI>
567<LI><B>Magnetic  field</B>
568    <UL>
569    <LI><TT>G4FieldManager</TT>: added missing <TT>GetChordFinder()</TT>
570        method. Addresses problem report #847.</LI>
571    <LI><TT>G4FieldTrack</TT>:
572        <UL>
573        <LI>Added charge and moments to <TT>FieldTrack</TT>, with accessors.</TT>
574        <LI>Added new constructors, one with charge and without velocity
575            and one taking a const reference to <TT>Spin</TT>.</LI>
576        <LI>New implementation method <TT>UpdateFourMomentum()</TT>.</LI>
577        </UL></LI>
578    <LI>Correction in <TT>G4ExactHelixStepper</TT> and made <TT>Stepper()</TT>
579        method virtual in <TT>G4MagHelicalStepper</TT> to enable
580        <TT>G4ExactHelixStepper</TT> to override it.</LI>
581    <LI>Streaming operator takes <TT>const</TT> reference and outputs momentum
582        and direction magnitudes.</LI>
583    </UL></LI>
584<LI><B>Management</B>
585    <UL>
586    <LI><TT>G4Region</TT>:
587    <UL>
588    <LI>Support material scanning for nested parameterisations. Moved classes
589        <TT>G4VNestedParameterisation</TT> and <TT>G4VVolumeMaterialScanner</TT>
590        from <TT>volumes</TT> module.</LI>
591    <LI>Fixed implementation of utility method <TT>GetParentRegion()</TT> to
592        return a boolean flag as argument, to identify if parent region is
593        unique or not.</LI>
594    <LI>Simplified implementation of method <TT>BelongsTo(PV*)</TT>.</LI>
595    </UL></LI>
596    <LI>Workaround in <TT>G4SmartVoxelHeader::BuildNodes()</TT> to avoid rare
597        cases of negative extent returned by volumes due to malformed
598        geometries or inaccurate extent calculation.</LI>
599    <LI>Modified <TT>G4VStoreNotifier</TT> class to be now a <TT>typedef</TT>
600        of <TT>G4VNotifier</TT> which is moved in the <TT>global</TT> module.
601        Adapted stores to the new configuration.</LI>
602    <LI>Moved <TT>G4AssemblyTriplet</TT> class to <TT>volumes</TT> module.
603    <LI><TT>G4VPhysicalVolume</TT>: return <TT>const G4String&</TT> for
604        <TT>GetName()</TT> instead of a string copy.</LI>
605    </UL></LI>
606<LI><B>Navigation</B>
607    <UL>
608    <LI>Extended <TT>G4TransportationManager</TT> to handle multiple
609        navigators. Preserved interface for navigation in mass/tracking
610        geometry.</LI>
611    <LI>Added activation flag to <TT>G4Navigator</TT> and related accessor
612        methods.</LI>
613    </UL></LI>
614<LI><B>Solids</B>
615    <UL>
616    <LI><I>Boolean</I>:
617        <UL>
618        <LI>Fix in <TT>G4IntersectionSolid::CalculateExtent()</TT> for the
619            correctly handling extent computation for nested intersections
620            and always respect the rule <TT>pMax > pMin</TT>.</LI>
621        </UL></LI>
622    <LI><I>CSG</I>:
623        <UL>
624        <LI><TT>G4Tubs</TT>: added protection against <TT>NaN</TT>s in
625            <TT>CalculateExtent()</TT> to avoid <TT>sqrt()</TT> of negative
626            numbers due to round-off.</LI>
627        </UL></LI>
628    <LI><I>Specific</I>:
629        <UL>
630        <LI>Introducing first implementation of a tessellated solid,
631            i.e. a solid which can be composed of arbitrary triangular
632            and/or quadrangular facets. New classes:
633            <TT>G4QuadrangularFacet</TT>, <TT>G4TessellatedSolid</TT>,
634            <TT>G4TriangularFacet</TT> and <TT>G4VFacet</TT>.</LI>
635        <LI><TT>G4TwistedTubs</TT>: defined approximated estimation for
636            <TT>GetCubicVolume()</TT>.</LI>
637        <LI>Fix in <TT>G4Ellipsoid::SetZCuts()</TT> and
638            <TT>G4EllipticalTube::SetZCut()</TT> for usage of uninitialised
639            variables.</LI>
640        <LI><TT>G4Polycone</TT>: added protection against <TT>NaN</TT>s in
641            <TT>G4PolyconeSide::Normal()</TT> for points at the origin.</LI>
642        <LI>Added accessor method <TT>GetVertices()</TT> in <TT>G4Tet</TT> to
643            return the list of vertices composing the solid. Required for
644            GDML persistency.</LI>
645        </UL></LI>
646    </UL></LI>
647<LI><B>Volumes</B>
648    <UL>
649    <LI><TT>G4AssemblyVolume</TT>:
650        <UL>
651        <LI>Now <TT>G4AssemblyVolume</TT> can support assembly of assemblies
652            and reflections. Reviewed and modified <TT>MakeImprint()</TT>
653            methods to act recursively.</LI>
654        <LI>Added methods <TT>GetVolumesIterator()</TT> and
655            <TT>TotalImprintedVolumes()</TT> for accessing the list
656            of physical-volumes imprinted.</LI>
657        <LI>Added default boolean argument to <TT>MakeImprint()</TT> methods
658            to allow for optional check of overlaps of constituent volumes.</LI>
659        </UL></LI>
660   <LI>Extended overlaps check also for reflection of placements.</LI>
661   <LI>Protect against checking overlaps on world volume placement ...</LI>
662   <LI>Moved <TT>G4VNestedParameterisation</TT> and
663       <TT>G4VVolumeMaterialScanner</TT> classes to <TT>management</TT>
664       module, to support material scanning in <TT>G4Region</TT>.</LI>
665   <LI>Moved <TT>G4AssemblyTriplet</TT> class from <TT>management</TT>
666       module.</LI>
667   </UL></LI>
668</UL>
669
670<A NAME="glob-notes">
671<H3><I>Global</I></H3></A>
672<UL>
673<LI><TT>G4UnitsTable</TT>: added <TT>GeV/cm</TT>, <TT>MeV/cm</TT>,
674  <TT>keV/cm</TT>, <TT>eV/cm</TT> (Energy/Length), <TT>g/cm2</TT>
675  ("Mass/Surface") and <TT>MeV*cm2/g</TT> ..etc.. ("Energy*Surface/Mass").</LI>
676<LI>Added <TT>G4VNotifier</TT> class, renamed from <TT>G4VStoreNotifier</TT>
677    implemented inside the <TT>geometry</TT> module. The class is a simple
678    abstract class allowing for implementation of user notifiers to be
679    activated for example at registration/deregistration of objects in
680    stores.</TT>
681<LI>Clear entries in table in destructor of <TT>G4UnitDefinition</TT>.</LI>
682</UL>
683
684<A NAME="greps-notes">
685<H3><I>Graphical Representations</I></H3></A>
686<UL>
687<LI>Added new <TT>G4PolyhedronArbitrary</TT> class for creating arbitrary
688    <TT>G4Polyhedron</TT> objects out of vertices and indices.</LI>
689<LI>Added classes <TT>G4VFilter</TT> and <TT>G4SmartFilter</TT>.</LI>
690<LI>Added <TT>operator<<()</TT> for <TT>G4Text</TT>, <TT>G4Circle</TT>,
691    <TT>G4Square</TT> and <TT>G4Polyhedron</TT>. Improved/tidied
692    <TT>operator<<()</TT> for <TT>G4Polyline</TT>, <TT>G4VMarker</TT> and
693    <TT>G4VisAttributes</TT>.</LI>
694<LI><TT>G4VGraphicsScene</TT>: added <TT>Begin/EndPrimitives2D()</TT>
695     methods.</LI>
696<LI><TT>G4VVisManager</TT>: added <TT>Draw2d(const G4Text&)</TT> and
697    <TT>FilterTrajectory()</TT> methods.</LI>
698</UL>
699
700<A NAME="mat-notes">
701<H3><I>Materials</I></H3></A>
702<UL>
703<LI><TT>G4NistMaterialBuilder</TT>:
704    <UL>
705    <LI>Added method <TT>ConstructNewGasMaterial()</TT>.</LI>
706    <LI>Added warning flag to control standard output.</LI>
707    <LI>Fixed graphite description.</LI>
708    </UL></LI>
709<LI><TT>G4NistManager</TT>:
710    <UL>
711    <LI>Added <TT>GetAtomicMassAmu(Z)</TT> and <TT>GetIsotopeAbundance()</TT>
712        methods.</LI>
713    <LI>Added warning flag to control standard output.</LI>
714    </UL></LI>
715<LI>Added <TT>GetIsotopeAbundance()</TT> method in <TT>G4NistElementBuider</TT>.</LI>
716<LI>Fixed bug in <TT>G4NistMaterialManager</TT> in regime of combined
717    material definition (partially via NIST DB and partially user-defined).</LI>
718</UL>
719
720<A NAME="had-notes">
721<H3><I>Hadronic Processes</I></H3></A>
722<UL>
723<LI><B>management</B>:
724    <UL>
725    <LI><TT>G4HadronicProcess::ChooseAandZ()</TT>: throw fatal exception
726        if <TT>Z>92</TT> is chosen.</LI>
727    <LI><TT>G4HadronicProcess::GeneralPostStepDoIt()</TT>: for suspended tracks,
728        allow PostStep action to occur at end of step, but maintain suspended
729        track status. This avoids the "unknown track status" warning for
730        suspended tracks.</LI>
731    <LI><TT>G4EnergyRangeManager</TT>: in method <TT>GetHadronicInteraction()</TT>,
732        print out some diagnostic information for the exception which occurs
733        when two hadronic models completely overlap in energy.</LI>
734    </UL>
735<LI><B>models/cascade</B>:
736    <UL>
737    <LI>Removed <TT>G4BERTINI_KAON</TT> conditional assembly flags. Kaon and
738        hyperon interactions are now automatically included.</LI>
739    <LI><TT>G4ElasticCascadeInterface</TT> now derives from
740        <TT>G4VIntraNuclearTransportModel</TT> instead of
741        <TT>G4HadronElastic</TT>. Code now checks for the case when no elastic
742        scattering occurs. If so, original bullet and target are returned.</LI>
743    </UL>
744<LI><B>models/chiral_invariant_phase_space</B>:
745    <UL>
746    <LI>Added gamma decay for forced hypernucleus decay.</LI>
747    <LI>Modify <TT>G4StringChipsParticleLevelInterface</TT> in order to fix
748        energy/momentum conservation in QGSC.</LI>
749    <LI>Added new prototype class G4QElastic for precise elastic scattering
750        simulation in CHIPS.
751        <UL>
752        <LI>Improved high-t exponential behavior of pp elastic scattering.</LI>
753        <LI>Added isotope-symmetric reactions nd(=pd) and nHe4(=pHe4).</LI>
754        </UL></LI>
755    <LI>Fixed negative value to <TT>sqrt()</TT> in <TT>G4Quasmon</TT> and
756        <TT>G4QEnvironment</TT>.</LI>
757    <LI>CHIPS muon-nuclear, photo-nuclear, electro-nuclear and tau-nuclear
758        reactions have been introduced.</LI>
759    <LI>Upgraded cashing method for the CHIPS cross-sections.</LI>
760    </UL></LI>
761<LI><B>models/coherent_elastic</B>:
762    <UL>
763    <LI>New process <TT>G4UHadronElasticProcess</TT> added. It allows
764        user-defined isotope composition of elements and uses cross sections
765        from the CHIPS model and high-precision neutron models when
766        appropriate.</LI>
767    <LI><TT>G4LElasticB</TT> model:
768      <UL>
769      <LI>Renamed as <TT>G4HadronElastic</TT>.</LI>
770      <LI>Removed charge exchange option.</LI>
771      <LI>Removed low limit on primary momentum.</LI>
772      <LI>Added limit on secondary kinetic energy.</LI>
773      <LI>Added s-wave only regime for low momentum scattering.</LI>
774      <LI>Add code from high energy elastic scattering which does not use
775          data files.</LI>
776      <LI>Fix to remove occasional NaN values at scattering on deuteron.</LI>
777      </UL></LI>
778    <LI>For both <TT>G4UHadronElasticProcess</TT> and <TT>G4LElastic</TT> use
779        np scattering from CHIPS.</LI>
780    <LI>Added new <TT>G4ChargeExchangeProcess</TT> class.</LI>
781    </UL></LI>
782<LI><B>models/de_excitation</B>:
783    <UL>
784    <LI>Fixed memory leak in method <TT>G4PhotonEvaporation::BreakItUp()</TT>.
785        Addresses problem report #851.</LI>
786    </UL></LI>
787<LI><B>models/low_energy</B>:
788    <UL>
789    <LI>Moved <TT>G4LElasticB</TT> to <TT>coherent_elastic</TT> module.</LI>
790    <LI>Removed subtraction of electron masses from atomic mass in some low
791        energy models. This is because the method <TT>G4Nucleus::AtomicMass()</TT>
792        now already makes the subtraction. Models affected:
793       <UL>
794       <LI><TT>G4LEAlphaInelastic</TT>, <TT>G4LEDeuteronInelastic</TT>,
795           <TT>G4LENeutronInelastic</TT>, <TT>G4LEProtonInelastic</TT>,
796           <TT>G4LETritonInelastic</TT>.</LI>
797       </UL></LI>
798    </UL>
799<LI><B>models/management</B>:
800    <UL>
801    <LI><TT>G4InelasticInteraction</TT>: in method <TT>CalculateMomenta()</TT>,
802        corrected excess energy problem by doing two calculations of nuclear
803        evaporation, one for the annihilation case and one for non-
804        annihilation. Previously one value was applied to both cases.
805        Biggest effect seen for anti-baryons.<BR>
806        Save also current target and secondaries in case annihilation fails in
807        <TT>GenerateXandPt()</TT>, then restore them for use in
808        <TT>TwoCluster()</TT>.</LI>
809    </UL></LI>
810<LI><B>models/neutron_hp</B>:
811    <UL>
812    <LI>Installed option to turn off neutron suspension in HPElastic models:
813        added method <TT>DoNotSuspend()</TT> to <TT>G4NeutronHPElastic</TT> and
814        <TT>G4NeutronHPorLElastic</TT>. </LI>
815    </UL></LI>
816<LI><B>models/radioactive_decay</B>:
817    <UL>
818    <LI><TT>G4RadioactiveDecay::IsApplicable()</TT>: added test for negative
819        lifetime, fixed problem connected with particle design in 8.0.</LI>
820    </UL></LI>
821<LI><B>stopping</B>:
822    <UL>
823    <LI>Fixed energy/momentum balance for <TT>G4MuonMinusCaptureAtRest</TT>.</LI>
824    </UL>
825<LI><B>util</B>:
826    <UL>
827    <LI>Fixed bug in methods <TT>G4Nucleus::GetFermiMomentum()</TT> and
828        <TT>G4ReactionKinematics::TwoBodyScattering()</TT>: momentum is now
829        isotropic; previously theta was incorrectly sampled by
830        <TT>pi*G4UniformRand()</TT>. Addresses problem report #838.</LI>
831    <LI><TT>G4ReactionDynamics</TT>:
832      <UL>
833      <LI>Implemented exact proton and neutron accounting to improve baryon
834          number conservation:
835         <UL>
836         <LI>Added new method <TT>GetFinalStateNucleons()</TT> which returns
837             the number of protons and neutrons generated by the initial
838             projectile-nucleon collision.</LI>
839         <LI>Replaced spall argument in <TT>AddBlackTrackParticles()</TT> with
840             <TT>PinNucleus</TT> and <TT>NinNucleus</TT>.</LI>
841         </UL></LI>
842      <LI>Improved energy balance:
843         <UL>
844         <LI>In method <TT>GenerateXandPt()</TT>, try removing
845             pions and kaons before removing nucleons.</LI>
846         <LI>In method <TT>SuppressChargedPions()</TT>: check available CM
847             energy before changing pion to nucleon, also extended test for
848             anti-particles to include strange particles.</LI>
849         <LI>In methods <TT>GenerateXandPt()</TT> and <TT>TwoCluster()</TT>,
850             call <TT>GenerateNBodyEvent()</TT> a second time if energy sum
851             is violated, this time with total system energy.</LI>
852         <LI>In method <TT>TwoCluster()</TT>, use annihilation black track
853             energy when annihilation channel occurs.</LI>
854         </UL></LI>
855      </UL></LI>
856    <LI><TT>G4Nucleus</TT>:
857      <UL>
858      <LI>Added new method <TT>AnnihilationEvaporationEffects()</TT> which
859          calculates energy to be given to evaporated nucleons after
860          annihilation.</LI>
861      <LI>Added new methods <TT>GetAnnihilationPNBlackTrackEnergy()</TT> and
862          <TT>GetAnnihilationDTABlackTrackEnergy()</TT> to retrieve the values
863          calculated above.</LI>
864      <LI>Replaced code in method <TT>AtomicMass()</TT> with:
865          <TT>G4NucleiProperties::GetNuclearMass(A, Z)</TT> in order to be
866          consistent with other methods for getting nucleus mass.
867          Note: new version has electron masses subtracted, while old
868          version included them.</LI>
869      </UL></LI>
870    </UL></LI>
871</UL>
872
873<A NAME="parmodels-notes">
874<H3><I>Parameterisation Models</I></H3></A>
875<UL>
876<LI><b>gflash</b>:
877    <UL>
878    <LI>Fixed compilation warning on SUN-CC.</LI>
879    </UL></LI>
880</UL>
881
882<A NAME="part-notes">
883<H3><I>Particles</I></H3></A>
884<UL>
885<LI>Updated particles to match with PDG2005:
886    <UL>
887    <LI>Updated name and PDG code for some resonaces.</LI>
888    <LI>Updated mass/width for resonance particle.</LI>
889    <LI>Updated mass/width/life for heavy flavor particle.</LI>
890    <LI>Updated mass/life/decay modes for <TT>tau+-</TT>.</LI>
891    </UL></LI>
892<LI><TT>G4Ions</TT> is defined as the base class of all nuclei:
893    <UL>
894    <LI><TT>G4GenericIon</TT> and all light ion classes (including proton
895        and neutron) are derived from <TT>G4Ions</TT>.</LI>
896    <LI><TT>GetAtomicMass()</TT> and <TT>GetAtomicNumber()</TT> of
897        <TT>G4ParticleDefinition</TT> are changed to be non-virtual.</LI>
898    <LI><TT>AtomicNumber</TT> and <TT>AtomicMass</TT> are defined for
899        <TT>G4GenericIon</TT>. Fixes problem report #846 about registration of
900        <TT>G4RadioactiveDecay</TT> to <TT>G4GenericIon</TT>.</LI>
901    </UL></LI>
902<LI>All particles are deleted when calling
903    <TT>G4ParticleTable::RemoveAllParticles()</TT>
904    and is invoked in the destructor of <TT>G4ParticleTable</TT>.</LI>
905<LI>Fixed memory leak in <TT>G4MuonDecayChannel</TT>.
906    Addressing problem report #864.</LI>
907</UL>
908
909<A NAME="run-notes">
910<H3><I>Run</I></H3></A>
911<UL>
912<LI>Introducing new material scanner utility.</LI>
913<LI>Store random number status in <TT>G4Run</TT> and <TT>G4Event</TT>.</LI>
914<LI>Added zero vector check for polarization of optical photon in
915    <TT>G4PrimaryTransformer</TT>.</LI>
916</UL>
917
918<A NAME="track-notes">
919<H3><I>Track and Tracking</I></H3></A>
920<UL>
921<LI><B>Track</B>
922    <UL>
923    <LI>Improved <TT>G4Track::GetVelocity()</TT> for optical photon.</LI>
924    </UL></LI>
925<LI><B>Tracking</B>
926    <UL>
927    <LI>Bug fix for <TT>StepStatus</TT> when a track is outside of
928        world boundary. Addressing problem report #866.</LI>
929    <LI>Introduced new flags in <TT>G4VSteppingVerbose</TT> for more
930        verbosity control.</LI>
931    </UL></LI>
932</UL>
933
934<A NAME="vis-notes">
935<H3><I>Visualization</I></H3></A>
936<UL>
937<LI><B>Overall</B>
938    <UL>
939    <LI>Support 2D Text for OpenGL and HepRep (other drivers to be supported in
940        future releases).</LI>
941    <LI>Added powerful new facility to control which trajectories are drawn:
942        Trajectory Filter Models. See also new commands <TT>/vis/filtering</TT>.</LI>
943    <LI>Added more trajectory models: DrawByOriginVolume and GenericDrawer.</LI>
944    <LI>Added options to modeling commands to control drawing style for lines,
945        step and auxiliary points. See also commands
946        <TT>/vis/modeling/trajectories/*</TT>.
947        Older way of controlling some of these options, the <TT>i_mode</TT>
948        argument in <TT>/vis/scene/add/trajectories</TT>, is also still
949        supported but will be deprecated in the next major release.</LI>
950    <LI>Added command to interactively edit vis attributes (color, visibility,
951        etc.) of geometry volumes. See also commands <TT>/vis/geometry/*</TT>.</LI>
952    <LI>Added command to list current settings of modeling, filtering, etc.
953        See also commands <TT>/vis/list/*</TT>.</LI>
954    <LI>Added command to write Run and Event numbers onto visualization.
955        See also command <TT>/vis/scene/add/eventID</TT>.</LI>
956    <LI>Support re-computation of transients to allow sending same events to
957        multiple vis drivers. See also command <TT>/vis/scene/transientsAction</TT>.
958        Note that this feature is turned off by default since we consider it a
959        beta release.</LI>
960    <LI>Print available models on initialisation (uses new command
961        <TT>/vis/list</TT> described above).</LI>
962    <LI>Changed ERROR to WARNING when user calls <TT>Draw</TT> with an invalid
963        view.</LI>
964    <LI>Added protection against non-instantiation of run manager.</LI>
965    <LI>Improved protection for null models and parameters.</LI>
966    <LI>Improved handling of situation when world has been added to an empty
967        scene.</LI>
968    <LI>Eliminated some cases of double refresh.</LI>
969    <LI>Fixed memory leak in <TT>CheckModel()</TT>.</LI>
970    <LI>Implemented methods <TT>Begin/EndPrimitives2D()</TT> used by some vis
971        drivers to tell if primitives are to be placed in 2D (screen) space or
972        2D (world) space.</LI>
973    <LI>Fixed bug in culling of covered daughters.</LI>
974    <LI>Migrated to direct access to <TT>G4PhysicalVolumeModel</TT>.</LI>
975    <LI>Added capability of maintaining path of the current drawn (non-culled)
976        volume in terms of drawn (non-culled) ancestors.
977        See header file for <TT>G4PhysicalVolumeModel</TT> for detailed
978        description.</LI>
979    </UL></LI>
980<LI><B>DAWN</B>
981    <UL>
982    <LI>Fixed rewind and file-closure-on-exit issues that occurred for some
983        command sequences.</LI>
984    <LI>Prevented possibility of having duplicate instances of the geometry.</LI>
985    </UL></LI>
986<LI><B>HepRep</B>
987    <UL>
988    <LI><TT>HepRepFile</TT>:
989        <UL>
990        <LI>Corrected direction of <TT>G4Cons</TT>.</LI>
991        <LI>Added units to geometry volume attributes Density and Radlen.</LI>
992        <LI>Corrected hierarchy for cases in which culling has removed some
993            volumes.</LI>
994        <LI>Split different groups of hits into different HepRep Types
995            depending on attribute <TT>HitType</TT>.</LI>
996        <LI>Handle axes and other primitives that are neither transients nor
997            geometry.</LI>
998        <LI>Fixed file-closure-on-exit issues that occurred for some command
999            sequences.</LI>
1000        <LI>Added <TT>G4Version</TT> attribute to HepRep file.</LI>
1001        </UL></LI>
1002    <LI><TT>HepRepXML</TT>: stable. No changes.</LI>
1003    </UL></LI>
1004<LI><B>OpenGL</B>
1005    <UL>
1006    <LI>Improved efficiency (by making <TT>G4OpenGLXmViewerMessenger</TT>
1007        smart).</LI>
1008    <LI>Refined display list handling.</LI>
1009    <LI>Fixed buffer swapping behaviour that had resulted in blank or
1010        incomplete displays on Windows.</LI>
1011    </UL></LI>
1012<LI><B>OpenInventor</B>
1013    <UL>
1014    <LI>Implemented drawn volume path.</LI>
1015    <LI>General improvements in logic.</LI>
1016    </UL></LI>
1017<LI><B>RayTracer</B>
1018    <UL>
1019    <LI>Moved <TT>G4RayShooter</TT> class to <TT>Event</TT> module.</LI>
1020    <LI>Allow RayTracer and RayTracerX to be separately controlled during
1021        same session.</LI>
1022    </UL></LI>
1023<LI><B>Tree</B>
1024    <UL>
1025    <LI>Fixed bug in treatment of repeated replicas.</LI>
1026    </UL></LI>
1027<LI><B>VRML</B>
1028    <UL>
1029    <LI>Fixed rewind and file-closure-on-exit issues that occurred for some
1030        command sequences.</LI>
1031    <LI>Prevented possibility of having duplicate instances of the geometry.</LI>
1032    </UL></LI>
1033<LI><B>XXX</B>
1034    <UL>
1035    <LI>Improved handling of <TT>DrawnPVPath</TT> (by using drawn volume
1036        path).</LI>
1037    <LI>Added more example classes: <TT>G4XXXFile</TT>, <TT>G4XXXStored</TT>
1038        and <TT>G4XXXSG</TT>.</LI>
1039    </UL></LI>
1040</UL>
1041
1042<A NAME="env-notes">
1043<H3><I>Environments</I></H3></A>
1044<UL>
1045<LI>Added new Python interface module:
1046    <UL>
1047    <LI><TT>g4py/source</TT>: Python wrappers for Geant4 source.</LI>
1048    <LI><TT>g4py/site-modules</TT>: some application modules using the
1049        wrappers.</LI>
1050    <LI>examples, tests and associated configuration files.</LI>
1051    </UL></LI>
1052<LI>Removed dependency on Gain module in MOMO.</LI>
1053</UL>
1054
1055<A NAME="lst-notes">
1056<H3><I>Physics lists</I></H3></A>
1057<UL>
1058<LI>Archived 'electromagnetic' subdirectory. Physics lists for EM use
1059    cases are provided together within the geant4 examples. In particular
1060    extended electromagnetic examples demonstrates how to use standard EM
1061    physics, how to use available options and provide extensions.</LI>
1062<LI>Providing <TT>G4QStoppingPhysics</TT> based on the CHIPS model for
1063    simulation of capture at rest of negatively charged hadrons; using it in
1064    all QGS and FTF type physics lists.</LI>
1065<LI>Moved elastic out of Neutron/Proton/PIK- builders. Now using
1066    <TT>G4HadronElasticPhysics</TT> directly in all.</LI>
1067<LI>Using Bertini Cascade for kaons (K+,K-, K0L, k0S).</LI>
1068<LI>Added Binary Cascade for Ions to BIC physics lists.</LI>
1069<LI>Added experimental QGSP_EMX physics list providing an alternative
1070    standard EM physics, requiring less CPU in comparison with QGSP.</LI>
1071<LI>Added mu-nuclear option to <TT>G4EmExtraBuilder</TT>.</LI>
1072<LI>Added experimental QBBC Physics List: version of physics free of
1073    LHEP models but using Binary, BinaryIon, Bertini, CHIPS, QGSC, FTFC.</LI>
1074<LI>Fixed problem in destructors of <TT>G4DecayPhysics</TT> and
1075    <TT>G4ElectroNuclearBuilder</TT> and <TT>G4MiscLHEPBuilder</TT>.</LI>
1076<LI>Fixed name of builder for <TT>HadronPhysicsQGSP_GN</TT>.</LI>
1077</UL>
1078
1079<A NAME="data-notes">
1080<H3><I>Data sets</I></H3></A>
1081<UL>
1082<LI>New data set for low-energy electromagnetic processes: G4EMLOW 4.0.</LI>
1083<LI>New data set for high-precision neutron processes: G4NDL 3.9:
1084    <UL>
1085    <LI>Added data for Antimony, Hafnium, Technetium, Samarium, Neodymium
1086        and Gadorinium.</LI>
1087    <LI>Updated inelastic data for 17_nat_Chlorine, 28_62_Nickel and removed
1088        data for 32_70/2/3/4/6_Germanium.</LI>
1089    </UL></LI>
1090</UL>
1091
1092<A NAME="ex-notes">
1093<H3><I>Examples</I></H3></A>
1094<UL>
1095<LI>Updated reference outputs.</LI>
1096<LI><B>advanced</B>
1097    <UL>
1098    <LI>air_shower
1099        <UL>
1100        <LI><TT>RunAction</TT>: removed use of visualization UI commands,
1101            and small changes in <TT>PrimaryGeneratorAction</TT>.</LI>
1102        </UL></LI>
1103    <LI>brachytherapy
1104        <UL>
1105        <LI>Delete hits collection. Energy deposit and position are stored
1106            directly in histograms and ntuples in the <TT>BrachyPhantomSD</TT>.</LI>
1107        <LI>Iteration in the management of the primary particles.</LI>
1108        <LI>More comments in code and README updated.</LI>
1109        </UL></LI>
1110    <LI>gammaray_telescope
1111        <UL>
1112        <LI>Updates in Digi section, Physics Models, Source Generation.</LI>
1113        </UL></LI>
1114    <LI>hadrontherapy
1115        <UL>
1116        <LI>Improved the random generator.</LI>
1117        <LI>Bug fixed in all the hadronic physics lists; the hadronic
1118            processes are not activated for He3 at the moment.</LI>
1119        <LI>Corrected a bug in the primary generator action
1120            on <TT>SetParticleMomentum()</TT>.</LI>
1121        <LI>Changed the beam line according with a modification in the real
1122            CATANA beam line considered as model.</LI>
1123        <LI>Comments in the primary particle and physics components.</LI>
1124        </UL></LI>
1125    <LI>medical_linac
1126        <UL>
1127        <LI>Changes in input macros.</LI>
1128        </UL></LI>
1129    <LI>microbeam
1130        <UL>
1131        <LI>New example simulating the cellular irradiation beam line
1132            installed on the AIFIRA electrostatic accelerator facility
1133            located at CENBG, Bordeaux-Gradignan, France.</LI>
1134        </UL></LI>
1135    <LI>radioprotection
1136        <UL>
1137        <LI>Introduced pion absorption at rest in <TT>RemSimHadronicBinary</TT>.</LI>
1138        <LI>Primary particle generator can handle spectra.</LI>
1139        <LI>Added histograms and comments.</LI>
1140        </UL></LI>
1141    <LI>raredecay_calorimetry
1142        <UL>
1143        <LI>New example simulating a simplified sandwitch calorimeter for
1144            estimate importance of photonuclear reactions for photon
1145            inefficiency and compare effectiveness of different absorbers
1146            to reduce it.</LI>
1147        </UL></LI>
1148    <LI>Tiara
1149        <UL>
1150        <LI>Minor updates.</LI>
1151        </UL></LI>
1152    <LI>underground_physics
1153        <UL>
1154        <LI>Removed visualisation warnings when running in batch mode.</LI>
1155        <LI>Replaced obsolete e-mail address in headers.</LI>
1156        </UL></LI>
1157    </UL></LI>
1158<LI><B>extended</B>
1159    <UL>
1160    <LI>analysis/A01
1161        <UL>
1162        <LI>Added Time attribute to Hit classes.</LI>
1163        </UL></LI>
1164    <LI>electromagnetic/TestEm0
1165        <UL>
1166        <LI>New example to print the cross sections and stopping power used by
1167            the standard electromagnetic package via <TT>G4EmCalculator</TT>,
1168            which extracts these data from the Physics Tables.
1169            The program can be used in batch or interactively.</LI>
1170        </UL></LI>
1171    <LI>electromagnetic/TestEm1
1172        <UL>
1173        <LI>Added <TT>PhysListEmLivermore</TT> and
1174            <TT>PhysListEmPenelope</TT>.</LI>
1175        <LI>Create histograms for primary particle only.</LI>
1176        <LI>Refreshed all macros. Changed names.</LI>
1177        <LI>Changed printing format in <TT>EndOfRun</TT>.</LI>
1178        <LI><TT>PhysicsList</TT>: new functions <TT>AddDecay()</TT>,
1179            <TT>AddStepMax()</TT>.</LI>
1180        <LI>Changed unit <TT>mum</TT> to <TT>um</TT> in input macro.</LI>
1181        <LI>Updated README.</LI>
1182        </UL></LI>
1183    <LI>electromagnetic/TestEm2
1184        <UL>
1185        <LI>Suppress the geometrical replica. The energy profiles are produced
1186            without geometrical step limitation. Suppressed the geometrical
1187            disivions in geant3.</LI>
1188        <LI>Removed histograms of particle flux. Histograms 10-12 become 7-9.</LI>
1189        <LI>Removied all Builders and replaced by simple physics lists.</LI>
1190        <LI><TT>SteppingAction</TT>: edep randomly distribued along step.</LI>
1191        <LI><TT>PrimaryGenerator</TT>: allow <TT>/gun/particle/position</TT>.</LI>
1192        <LI><TT>RunAction</TT> added printout of Moliere radius.</LI>
1193        <LI>Updated README.</LI>
1194        </UL></LI>
1195    <LI>electromagnetic/TestEm3
1196        <UL>
1197        <LI>Changed unit <TT>mum</TT> to <TT>um</TT> in most macros.</LI>
1198        <LI>Added extra material and use G4 NIST element DB.</LI>
1199        <LI>Added Livermore and Penelope Physics Lists.</LI>
1200        <LI>Use touchable-handle in stepping-action.</LI>
1201        <LI>Updated README.</LI>
1202        </UL></LI>
1203    <LI>electromagnetic/TestEm4
1204        <UL>
1205        <LI>Updated input macros and README.</LI>
1206        </UL></LI>
1207    <LI>electromagnetic/TestEm5
1208        <UL>
1209        <LI><TT>TrackingAction</TT>: more precise definition of transmit and
1210            reflect.
1211        <LI>Added Livermore Physics List.</LI>
1212        <LI>Changed unit <TT>mum</TT> to <TT>um</TT> in input macros.</LI>
1213        <LI>Completed Penelope Physics List.</LI>
1214        <LI>Count energy of killed secondaries and print full <TT>dEdx</TT>.</LI>
1215        <LI>Use touchable-handle in stepping-action.</LI>
1216        <LI>Updated README.</LI>
1217        </UL></LI>
1218    <LI>electromagnetic/TestEm6
1219        <UL>
1220        <LI>Added UI command <TT>/testem/phys/SetAnnihiToHadronFac</TT>.</LI>
1221        <LI>Register <TT>G4StepLimiter</TT> in Physics List.</LI>
1222        </UL></LI>
1223    <LI>electromagnetic/TestEm7
1224        <UL>
1225        <LI>New macro: tallies.mac; completed default input macro.</LI>
1226        <LI>SteppingAction: <TT>edep</TT> randomly distribued along step.</LI>
1227        <LI>Use touchable-handle in stepping-action.</LI>
1228        <LI>Updated README.</LI>
1229        </UL></LI>
1230    <LI>electromagnetic/TestEm9
1231        <UL>
1232        <LI>Updated README.</LI>
1233        </UL></LI>
1234    <LI>electromagnetic/TestEm10
1235        <UL>
1236        <LI>General cleanup and removed obsolete files.</LI>
1237        </UL></LI>
1238    <LI>electromagnetic/TestEm11<BR>
1239        electromagnetic/TestEm12
1240        <UL>
1241        <LI>Changed unit <TT>mum</TT> to <TT>um</TT> in input macros.
1242        <LI>Added Livermore and Penelope Physics Lists.
1243        <LI>RunAction: added GetCSDARange().
1244        <LI>HistoManager: compute stepMax from histo 1 (stepMax <= binWidth).
1245        <LI>RunAction: pass stepMax from HistoManager to StepMax process.
1246        <LI>StepMax: added boolean flag 'apply'.
1247        <LI>SteppingAction: edep randomly distribued along step.
1248        <LI>Updated README
1249        <LI></LI>
1250        </UL></LI>
1251    <LI>electromagnetic/TestEm13
1252        <UL>
1253        <LI>Replaces (renamed) <TT>PhotonProcesses</TT> example.</LI>
1254        <LI>Allows to compute the total cross section of one or several
1255            processes.</LI>
1256        <LI>Added protection in <TT>DetectorConstruction::UpdateDeometry()</TT>.</LI>
1257        <LI>Updated README.</LI>
1258        </UL></LI>
1259    <LI>electromagnetic/TestEm14
1260        <UL>
1261        <LI>Replaces (renamed) <TT>MuonProcesses</TT> example.
1262        <LI>Allows to compute the total cross section of one or several
1263            processes and to plot the final state at interaction point.</LI>
1264        <LI>Added protection in <TT>DetectorConstruction::UpdateDeometry()</TT>.</LI>
1265        <LI>Updated README.</LI>
1266        </UL></LI>
1267    <LI>electromagnetic/TestEm15
1268        <UL>
1269        <LI>Added protection in <TT>DetectorConstruction::UpdateDeometry()</TT>.</LI>
1270        <LI>Added <TT>phi</TT> correlation.</LI>
1271        <LI>Use touchable-handle in stepping-action.</LI>
1272        <LI>Updated README.</LI>
1273        </UL></LI>
1274    <LI>electromagnetic/TestEm16
1275        <UL>
1276        <LI>New example for the simulation of synchrotron radiation.</LI>
1277        </UL></LI>
1278    <LI>electromagnetic/TestEm17
1279        <UL>
1280        <LI>New example to check implementation of the processes
1281            of muon interactions: ionization, direct (<TT>e+,e-</TT>)
1282            production, bremsstrahlung, <TT>mu</TT>-nuclear interaction.</LI>
1283        </UL></LI>
1284    <LI>gdml
1285        <UL>
1286        <LI>Added <TT>G4Evaluator</TT> for new version of GDML and updated
1287            <TT>GNUmakefile</TT>.</LI>
1288        </UL></LI>
1289    <LI>hadronic/Hadr01
1290        <UL>
1291        <LI>New example based on the IION application developed for
1292            simulation of proton or ion beam interaction with a water target.
1293            Different aspects of beam target interaction are demonstrated in the
1294            example including logitudinal profile of energy deposition, spectra of
1295            secondary  particles, spectra of particles leaving the target. The
1296            results are presented in a form of average numbers and histograms.</LI>
1297        </UL></LI>
1298    <LI>optical/LXe
1299        <UL>
1300        <LI>Exhibit choice of WLS time delay via new classes of
1301            <TT>G4VWLSTimeGeneratorProfile</TT>.</LI>
1302        </UL></LI>
1303    <LI>persistency
1304        <UL>
1305        <LI>Archived old <TT>PersEx01</TT> example based on CINT dictionary.</LI>
1306        <LI>Introduced new example <TT>P01</TT> for persistency using the
1307            Reflex tool.</LI>
1308        </UL></LI>
1309    <LI>visualization
1310        <UL>
1311        <LI>New example "perspective".</LI>
1312        </UL></LI>
1313    </UL></LI>
1314<LI><B>novice</B>
1315    <UL>
1316    <LI>Reviewed initialization in <TT>main()</TT>.</LI>
1317    <LI>N02
1318        <UL>
1319        <LI>Use touchable-handle in <TT>TrackerSD</TT>.</LI>
1320        <LI>Updated README.</LI>
1321        </UL></LI>
1322    <LI>N03
1323        <UL>
1324        <LI>Use <TT>preStepPoint</TT> and touchable-handle in stepping-action.</LI>
1325        <LI>Removed <TT>printModulo</TT> command in <TT>vis.mac</TT>.</LI>
1326        </UL></LI>
1327    <LI>N05
1328        <UL>
1329        <LI>Fixed memory leak in <TT>ExN05PionShowerModel</TT>.</LI>
1330        </UL></LI>
1331    <LI>N06
1332        <UL>
1333        <LI>Added new method <TT>PSetOptPhotonPolar()</TT> in
1334            <TT>PrimaryGeneratorAction</TT> to set a random linear polarization when
1335            the command <TT>/N06/gun/optPhotonPolar</TT> is given without
1336            arguments.</LI>
1337        </UL></LI>
1338    <LI>N07
1339        <UL>
1340        <LI>Fixed a bug in <TT>SetGapMaterial()</TT> in <TT>DetectorConstruction</TT>.</LI>
1341        <LI>Added method <TT>AddMaterial()</TT> to <TT>DetectorConstruction</TT> and
1342            modified <TT>DetectorMessenger</TT> class accordingly.</LI>
1343        <LI>Updated <TT>sample.mac</tT> and <TT>retrieve.mac</TT> for modified
1344            messenger.</LI>
1345        </UL></LI>
1346    </UL></LI>
1347</UL>
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