source: trunk/examples/extended/electromagnetic/TestEm12/TestEm12.out @ 1337

Last change on this file since 1337 was 1337, checked in by garnier, 14 years ago

tag geant4.9.4 beta 1 + modifs locales

File size: 19.0 KB
RevLine 
[807]1
[1337]2        ############################################
3        !!! WARNING - FPE detection is activated !!!
4        ############################################
5
[807]6*************************************************************
[1337]7 Geant4 version Name: geant4-09-03-ref-06    (25-June-2010)
[807]8                      Copyright : Geant4 Collaboration
9                      Reference : NIM A 506 (2003), 250-303
10                            WWW : http://cern.ch/geant4
11*************************************************************
12
13
14***** Table : Nb of materials = 8 *****
15
[1337]16 Material:    G4_Al     density:  2.699 g/cm3   RadL:   8.896 cm   Nucl.Int.Length:  38.894 cm   Imean: 166.000 eV
[807]17   --->  Element: Al (Al)   Z = 13.0   N =  27.0   A =  26.98 g/mole  ElmMassFraction: 100.00 %  ElmAbundance 100.00 %
18
[1337]19 Material:    G4_Si     density:  2.330 g/cm3   RadL:   9.366 cm   Nucl.Int.Length:  45.660 cm   Imean: 173.000 eV
[807]20   --->  Element: Si (Si)   Z = 14.0   N =  28.1   A =  28.09 g/mole  ElmMassFraction: 100.00 %  ElmAbundance 100.00 %
21
[1337]22 Material:    G4_Fe     density:  7.874 g/cm3   RadL:   1.757 cm   Nucl.Int.Length:  16.990 cm   Imean: 286.000 eV
[807]23   --->  Element: Fe (Fe)   Z = 26.0   N =  55.8   A =  55.85 g/mole  ElmMassFraction: 100.00 %  ElmAbundance 100.00 %
24
[1337]25 Material:    G4_Ge     density:  5.323 g/cm3   RadL:   2.301 cm   Nucl.Int.Length:  27.431 cm   Imean: 350.000 eV
[807]26   --->  Element: Ge (Ge)   Z = 32.0   N =  72.6   A =  72.61 g/mole  ElmMassFraction: 100.00 %  ElmAbundance 100.00 %
27
[1337]28 Material:     G4_W     density: 19.300 g/cm3   RadL:   3.504 mm   Nucl.Int.Length:  10.312 cm   Imean: 727.000 eV
[807]29   --->  Element: W (W)   Z = 74.0   N = 183.8   A = 183.84 g/mole  ElmMassFraction: 100.00 %  ElmAbundance 100.00 %
30
[1337]31 Material:    G4_Pb     density: 11.350 g/cm3   RadL:   5.613 mm   Nucl.Int.Length:  18.248 cm   Imean: 823.000 eV
[807]32   --->  Element: Pb (Pb)   Z = 82.0   N = 207.2   A = 207.22 g/mole  ElmMassFraction: 100.00 %  ElmAbundance 100.00 %
33
[1337]34 Material:   G4_AIR     density:  1.205 mg/cm3  RadL: 303.921 m    Nucl.Int.Length: 710.095 m    Imean:  85.700 eV   temperature: 273.15 K  pressure:   1.00 atm
[807]35   --->  Element: C (C)   Z =  6.0   N =  12.0   A =  12.01 g/mole  ElmMassFraction:   0.01 %  ElmAbundance   0.02 %
36   --->  Element: N (N)   Z =  7.0   N =  14.0   A =  14.01 g/mole  ElmMassFraction:  75.53 %  ElmAbundance  78.44 %
37   --->  Element: O (O)   Z =  8.0   N =  16.0   A =  16.00 g/mole  ElmMassFraction:  23.18 %  ElmAbundance  21.07 %
38   --->  Element: Ar (Ar)   Z = 18.0   N =  39.9   A =  39.95 g/mole  ElmMassFraction:   1.28 %  ElmAbundance   0.47 %
39
[1337]40 Material: G4_WATER H_2O   density:  1.000 g/cm3   RadL:  36.083 cm   Nucl.Int.Length:  75.423 cm   Imean:  78.000 eV
[807]41   --->  Element: H (H)   Z =  1.0   N =   1.0   A =   1.01 g/mole  ElmMassFraction:  11.19 %  ElmAbundance  66.67 %
42   --->  Element: O (O)   Z =  8.0   N =  16.0   A =  16.00 g/mole  ElmMassFraction:  88.81 %  ElmAbundance  33.33 %
43
44
45/run/verbose 2
46#
47/testem/det/setMat G4_WATER
48/testem/det/setRadius 3 cm
49/testem/det/setNbOfLayers 1
50#
[1337]51/testem/phys/addPhysics local
52PhysicsList::AddPhysicsList: <local>
[807]53#
54/run/initialize
55userDetector->Construct() start.
56
57---------------------------------------------------------
58---> The Absorber is a sphere of 3 cm  radius of G4_WATER divided in 1 slices of 3 cm
59
60---------------------------------------------------------
61Absorber is registered to the default region.
62physicsList->Construct() start.
63physicsList->Construct() start.
[1337]64physicsList->CheckParticleList() start.
[807]65physicsList->setCut() start.
66PhysicsList::SetCuts:CutLength : 1 mm
67#
68/testem/phys/setCuts 1 um
69#
70/gun/particle e-
71/gun/energy 4 MeV
72#
[1337]73/testem/histo/setFileType root
[807]74/testem/histo/setFileName testem12
[1337]75/testem/histo/setHisto 1 120 0. 2.4 cm
[807]76----> SetHisto 1: dE/dr (MeV/mm) along radius (cm);  120 bins from 0 cm to 2.4 cm
[1337]77/testem/histo/setHisto 2 180 0. 4.5 MeV
[807]78----> SetHisto 2: total Energy deposited in absorber (MeV);  180 bins from 0 MeV to 4.5 MeV
[1337]79/testem/histo/setHisto 3 100 0. 3. cm
[807]80----> SetHisto 3: true track length of the primary particle (cm);  100 bins from 0 cm to 3 cm
[1337]81/testem/histo/setHisto 4 100 0. 500. um
[807]82----> SetHisto 4: true step size of the primary particle (um);  100 bins from 0 um to 500 um
[1337]83/testem/histo/setHisto 5 200 -3. 3. cm
[807]84----> SetHisto 5: projected range of the primary particle (cm);  200 bins from -3 cm to 3 cm
85/testem/histo/setcsdaRange 2.037 cm
[1337]86/testem/histo/setHisto 8 120 0. 1.2 none
[807]87----> SetHisto 8: d(E/E0)/d(r/r0) along r/r0;  120 bins from 0 none to 1.2 none
88#
89/testem/event/printModulo 1000
90#
91/run/beamOn 10000
92
[1337]93phot:   for  gamma    SubType= 12
94      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
95       PhotoElectric :     Emin=          0 eV         Emax=   10 TeV
[807]96
[1337]97compt:   for  gamma    SubType= 13
98      Lambda tables from 100 eV  to 10 TeV in 77 bins, spline: 1
99      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
100       Klein-Nishina :     Emin=          0 eV         Emax=   10 TeV
[807]101
[1337]102conv:   for  gamma    SubType= 14
103      Lambda tables from 1.022 MeV to 10 TeV in 77 bins, spline: 1
104      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
105       Bethe-Heitler :     Emin=          0 eV         Emax=   10 TeV
[807]106
[1337]107msc:   for e-    SubType= 10
108      Lambda tables from 100 eV  to 10 TeV in 77 bins, spline: 1
109      RangeFactor= 0.04, stepLimitType: 1, latDisplacement: 1
110      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
111          UrbanMsc93 :     Emin=          0 eV         Emax=   10 TeV
[807]112
[1337]113eIoni:   for  e-    SubType= 2
114      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
115      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
116      finalRange(mm)= 1, dRoverRange= 0.2, integral: 1, fluct: 1, linLossLimit= 0.01
117      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
118        MollerBhabha :     Emin=          0 eV         Emax=   10 TeV
119      CSDA range table up to 1 GeV in 160 bins
[807]120
[1337]121eBrem:   for  e-    SubType= 3
122      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
123      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
124      LPM flag: 1 for E > 1 GeV
125      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
126               eBrem :     Emin=          0 eV         Emax=   1 GeV
127            eBremRel :     Emin=          1 GeV        Emax=   10 TeV
[807]128
[1337]129eIoni:   for  e+    SubType= 2
130      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
131      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
132      finalRange(mm)= 1, dRoverRange= 0.2, integral: 1, fluct: 1, linLossLimit= 0.01
133      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
134        MollerBhabha :     Emin=          0 eV         Emax=   10 TeV
135      CSDA range table up to 1 GeV in 160 bins
[807]136
[1337]137eBrem:   for  e+    SubType= 3
138      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
139      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
140      LPM flag: 1 for E > 1 GeV
141      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
142               eBrem :     Emin=          0 eV         Emax=   1 GeV
143            eBremRel :     Emin=          1 GeV        Emax=   10 TeV
[807]144
[1337]145annihil:   for  e+    SubType= 5
146      Lambda tables from 100 eV  to 10 TeV in 77 bins, spline: 1
147      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
148            eplus2gg :     Emin=          0 eV         Emax=   10 TeV
[807]149
[1337]150msc:   for proton    SubType= 10
151      Lambda tables from 100 eV  to 10 TeV in 77 bins, spline: 1
152      RangeFactor= 0.2, stepLimitType: 0, latDisplacement: 1
153      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
154          UrbanMsc90 :     Emin=          0 eV         Emax=   10 TeV
[807]155
[1337]156hIoni:   for  proton    SubType= 2
157      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
158      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
159      finalRange(mm)= 1, dRoverRange= 0.2, integral: 1, fluct: 1, linLossLimit= 0.01
160      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
161               Bragg :     Emin=          0 eV         Emax=   2 MeV
162          BetheBloch :     Emin=          2 MeV        Emax=   10 TeV
163      CSDA range table up to 1 GeV in 160 bins
[807]164
[1337]165hBrems:   for  proton    SubType= 3
166      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
167      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
168      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
169               hBrem :     Emin=          0 eV         Emax=   10 TeV
[807]170
[1337]171hPairProd:   for  proton    SubType= 4
172      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
173      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
174      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
175           hPairProd :     Emin=          0 eV         Emax=   10 TeV
[807]176
[1337]177msc:   for GenericIon    SubType= 10
178      RangeFactor= 0.2, stepLimitType: 0, latDisplacement: 0
179      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
180          UrbanMsc90 :     Emin=          0 eV         Emax=   10 TeV
[807]181
[1337]182ionIoni:   for  GenericIon    SubType= 2
183      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
184      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
185      finalRange(mm)= 0.1, dRoverRange= 0.1, integral: 1, fluct: 1, linLossLimit= 0.02
186      Stopping Power data for 17 ion/material pairs, nuclearStopping: 1
187      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
188         ParamICRU73 :     Emin=          0 eV         Emax=   10 TeV
189      CSDA range table up to 1 GeV in 160 bins
[807]190
[1337]191nuclearStopping:   for  GenericIon    SubType= 1
192      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
193   ICRU49NucStopping :     Emin=          0 eV         Emax=   10 TeV
[807]194
[1337]195nuclearStopping:   for  alpha    SubType= 1
196      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
197   ICRU49NucStopping :     Emin=          0 eV         Emax=   10 TeV
[807]198
[1337]199hIoni:   for  anti_proton    SubType= 2
200      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
201      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
202      finalRange(mm)= 1, dRoverRange= 0.2, integral: 1, fluct: 1, linLossLimit= 0.01
203      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
204            ICRU73QO :     Emin=          0 eV         Emax=   2 MeV
205          BetheBloch :     Emin=          2 MeV        Emax=   10 TeV
206      CSDA range table up to 1 GeV in 160 bins
[807]207
[1337]208hIoni:   for  kaon+    SubType= 2
209      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
210      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
211      finalRange(mm)= 1, dRoverRange= 0.2, integral: 1, fluct: 1, linLossLimit= 0.01
212      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
213               Bragg :     Emin=          0 eV         Emax=   1.05231 MeV
214          BetheBloch :     Emin=    1.05231 MeV        Emax=   10 TeV
215      CSDA range table up to 1 GeV in 160 bins
[807]216
[1337]217hIoni:   for  kaon-    SubType= 2
218      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
219      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
220      finalRange(mm)= 1, dRoverRange= 0.2, integral: 1, fluct: 1, linLossLimit= 0.01
221      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
222            ICRU73QO :     Emin=          0 eV         Emax=   1.05231 MeV
223          BetheBloch :     Emin=    1.05231 MeV        Emax=   10 TeV
224      CSDA range table up to 1 GeV in 160 bins
[807]225
[1337]226muMsc:   for mu+    SubType= 10
227      Lambda tables from 100 eV  to 10 TeV in 77 bins, spline: 1
228      RangeFactor= 0.2, step limit type: 0, lateralDisplacement: 1, polarAngleLimit(deg)= 0
229      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
230          UrbanMsc90 :     Emin=          0 eV         Emax=   10 TeV
[807]231
[1337]232muIoni:   for  mu+    SubType= 2
233      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
234      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
235      finalRange(mm)= 1, dRoverRange= 0.2, integral: 1, fluct: 1, linLossLimit= 0.01
236      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
237               Bragg :     Emin=          0 eV         Emax=   200 keV
238          BetheBloch :     Emin=        200 keV        Emax=   1 GeV
239        MuBetheBloch :     Emin=          1 GeV        Emax=   10 TeV
240      CSDA range table up to 1 GeV in 160 bins
[807]241
[1337]242muBrems:   for  mu+    SubType= 3
243      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
244      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
245      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
246              MuBrem :     Emin=          0 eV         Emax=   10 TeV
[807]247
[1337]248muPairProd:   for  mu+    SubType= 4
249      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
250      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
251      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
252          muPairProd :     Emin=          0 eV         Emax=   10 TeV
[807]253
[1337]254muIoni:   for  mu-    SubType= 2
255      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
256      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
257      finalRange(mm)= 1, dRoverRange= 0.2, integral: 1, fluct: 1, linLossLimit= 0.01
258      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
259            ICRU73QO :     Emin=          0 eV         Emax=   200 keV
260          BetheBloch :     Emin=        200 keV        Emax=   1 GeV
261        MuBetheBloch :     Emin=          1 GeV        Emax=   10 TeV
262      CSDA range table up to 1 GeV in 160 bins
[807]263
[1337]264muBrems:   for  mu-    SubType= 3
265      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
266      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
267      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
268              MuBrem :     Emin=          0 eV         Emax=   10 TeV
269
270muPairProd:   for  mu-    SubType= 4
271      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
272      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
273      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
274          muPairProd :     Emin=          0 eV         Emax=   10 TeV
275
276hIoni:   for  pi+    SubType= 2
277      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
278      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
279      finalRange(mm)= 1, dRoverRange= 0.2, integral: 1, fluct: 1, linLossLimit= 0.01
280      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
281               Bragg :     Emin=          0 eV         Emax=   297.504 keV
282          BetheBloch :     Emin=    297.504 keV        Emax=   10 TeV
283      CSDA range table up to 1 GeV in 160 bins
284
285hBrems:   for  pi+    SubType= 3
286      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
287      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
288      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
289               hBrem :     Emin=          0 eV         Emax=   10 TeV
290
291hPairProd:   for  pi+    SubType= 4
292      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
293      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
294      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
295           hPairProd :     Emin=          0 eV         Emax=   10 TeV
296
297msc:   for pi-    SubType= 10
298      Lambda tables from 100 eV  to 10 TeV in 77 bins, spline: 1
299      RangeFactor= 0.2, stepLimitType: 0, latDisplacement: 1
300      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
301          UrbanMsc90 :     Emin=          0 eV         Emax=   10 TeV
302
303hIoni:   for  pi-    SubType= 2
304      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
305      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
306      finalRange(mm)= 1, dRoverRange= 0.2, integral: 1, fluct: 1, linLossLimit= 0.01
307      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
308            ICRU73QO :     Emin=          0 eV         Emax=   297.504 keV
309          BetheBloch :     Emin=    297.504 keV        Emax=   10 TeV
310      CSDA range table up to 1 GeV in 160 bins
311
312hBrems:   for  pi-    SubType= 3
313      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
314      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
315      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
316               hBrem :     Emin=          0 eV         Emax=   10 TeV
317
318hPairProd:   for  pi-    SubType= 4
319      dE/dx and range tables from 100 eV  to 10 TeV in 77 bins
320      Lambda tables from threshold to 10 TeV in 77 bins, spline: 1
321      ===== EM models for the G4Region  DefaultRegionForTheWorld ======
322           hPairProd :     Emin=          0 eV         Emax=   10 TeV
323
[807]324Region <DefaultRegionForTheWorld> -- appears in <Absorber> world volume
325 Root logical volume(s) : Absorber
326 Pointers : G4VUserRegionInformation[0], G4UserLimits[0], G4FastSimulationManager[0], G4UserSteppingAction[0]
327 Materials : G4_WATER
[1337]328 Production cuts :   gamma 1 um      e- 1 um      e+ 1 um  proton 0 fm
[807]329
330========= Table of registered couples ==============================
331
332Index : 0     used in the geometry : Yes     recalculation needed : No
333 Material : G4_WATER
[1337]334 Range cuts        :  gamma  1 um     e-  1 um     e+  1 um  proton 0 fm
335 Energy thresholds :  gamma  990 eV     e-  990 eV     e+  990 eV  proton 0 eV
[807]336 Region(s) which use this couple :
337    DefaultRegionForTheWorld
338
339====================================================================
340
341Start closing geometry.
342G4GeometryManager::ReportVoxelStats -- Voxel Statistics
343
344    Total memory consumed for geometry optimisation:   0 kByte
345    Total CPU time elapsed for geometry optimisation: 0 seconds
346### Run 0 start.
347
348--------- Ranecu engine status ---------
349 Initial seed (index) = 0
350 Current couple of seeds = 9876, 54321
351----------------------------------------
352
353---> stepMax from HistoManager = 2e+02 um
354Start Run processing.
355
356---> Begin of Event: 0
357
358---> Begin of Event: 1000
359
360---> Begin of Event: 2000
361
362---> Begin of Event: 3000
363
364---> Begin of Event: 4000
365
366---> Begin of Event: 5000
367
368---> Begin of Event: 6000
369
370---> Begin of Event: 7000
371
372---> Begin of Event: 8000
373
374---> Begin of Event: 9000
375Run terminated.
376Run Summary
377  Number of events processed : 10000
[1337]378  User=42.93s Real=71.08s Sys=0.28s
[807]379
380 ======================== run summary ======================
381
382 The run consists of 10000 e- of 4.00 MeV through 3.00 cm  of G4_WATER (density: 1.00 g/cm3 )
383
384 ============================================================
385
[1337]386 Total Energy deposited        = 3.932 MeV +- 234.119 keV
[807]387
[1337]388 Track length of primary track = 2.045 cm  +- 2.840 mm
389 Range from EmCalculator       = 2.048 cm  (from full dE/dx)
[807]390
[1337]391 Projected range               = 1.316 cm  +- 4.268 mm
[807]392
[1337]393 Nb of steps of primary track  = 241.47 +- 31.53         Step size= 84.668 um  +- 4.553 um
[807]394
395--------- Ranecu engine status ---------
396 Initial seed (index) = 0
[1337]397 Current couple of seeds = 343308114, 1826359441
[807]398----------------------------------------
399UserDetectorConstruction deleted.
400UserPhysicsList deleted.
401UserRunAction deleted.
402UserPrimaryGenerator deleted.
403G4 kernel has come to Quit state.
404EventManager deleted.
405UImanager deleted.
406Units table cleared.
407StateManager deleted.
408RunManagerKernel is deleted.
409RunManager is deleting.
[1337]410
Note: See TracBrowser for help on using the repository browser.