Changeset 1222 for trunk/documents/UserDoc/DocBookUsersGuides/PhysicsReferenceManual/latex/electromagnetic/miscellaneous/setcuts.tex

Timestamp:

Dec 16, 2009, 12:14:47 PM (15 years ago)

Author:

garnier

Message:

CVS update

File:

• trunk/documents/UserDoc/DocBookUsersGuides/PhysicsReferenceManual/latex/electromagnetic/miscellaneous/setcuts.tex (modified) (4 diffs)

trunk/documents/UserDoc/DocBookUsersGuides/PhysicsReferenceManual/latex/electromagnetic/miscellaneous/setcuts.tex

@@ -18 +18 @@
 one geometry is valid also for the other geometries.
 
-The value of cut is defined only for electrons, positrons and gamma.
+The value of cut is defined for electrons, positrons, gamma and protons.
 At the beginning of initialization of Geant4 physics the conversion from unique 
 {\it cut in range} to cuts in kinetic energy for each {\it G4MaterialCutsCouple}
@@ -40 +40 @@
 the corresponding kinetic energy can be found out. If obtained $cut in energy$ 
 cannot be below 
-the parameter $lowlimit$ (default $1 \; keV$). 
+the parameter $lowlimit$ (default $1 \; keV$) and above $highlimit$ (default $10 \; GeV$). 
 If in specific application lower cut is required,
 then the allowed energy cut needs to be extended:\\
 \\
 {\it \footnotesize G4ProductionCutsTable::GetProductionCutsTable()$\to$SetEnergyRange(lowlimit,highlimit);}
-
+or via UI commands
+$$/cuts/setMinCutEnergy\;\; 100\;\; eV$$
+$$/cuts/setMaxCutEnergy\;\; 100\;\; TeV$$
 In contrary to electrons, gammas has no range, so some approximation should
 be used for range to energy conversion.
@@ -73 +75 @@
 {\it highlimit}.
 
+The cut for proton is introduced with Geant4 v9.3. The main goal
+of this cut is to limit production of all recoil ions including protons
+ in elastic scattering 
+processes. A simple linear conversion formula is used to compute energy threshold from the value
+of cut in range, in particular, the cut in range $1~mm$ corresponds 
+to the production threshold $100 keV$. 
+
 The conversion from range to energy can be studied using {\it G4EmCalculator}
 class. This class allows access or recalculation of energy loss, ranges and
@@ -90 +99 @@
    04.12.04 minor re-wording by D.H. Wright \\
    18.05.07 rewritten by V. Ivanchenko \\
-   11.12.08 minor revision by V. Ivanchenko \\
+   11.12.08 minor revision by V. Ivanchenko, Geant4 v9.2 \\
+   11.12.09 minor revision by V. Ivanchenko, Geant4 v9.3 \\
 
 \begin{latexonly}