CERN Program Library Long Writeup W5013 - CERNLIB ...

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Geant 3.16 GEANT User’s Guide GEOM700 Origin : R.Brun Submitted: 16.12.83 Revision : Revised: 16.12.93 Documentation : Medium search statistics In order to understand the behaviour and the performance of the geometry defined by the user, it is sometimes very useful to accumulate the statistic of the various geometrical routines called. This is done automatically by GEANT if the statistical package is activated via the data record STAT 1. In this case the routine GBSTAT is called by GGCLOS, GFSTAT is called by the tracking routines GINVOL, GTMEDI, GTNEXT, GTRACK and GMEDIA to accumulate the statistics and GPSTAT is called by GLAST. CALL GBSTAT Creates the data structure JGSTAT in order to accumulate statistics for the number of calls to routines GINVOL, GTMEDI, GTNEXT, GTRACK and GMEDIA and the total number of steps per volume. CALL GPSTAT Prints the volume statistics accumulated during the run. The table which is printed is useful for optimizing the tracking medium parameters associated to each volume. CALL GFSTAT Fills banks for volume statistics. An example of output is the following: ************************************************************************************************************************** * * * V O L U M E S T A T I S T I C S * * * ************************************************************************************************************************** * VOLUME * GINVOL * GMEDIA * GTNEXT * GTMEDI * NSTEPS * * NAME * TOTAL * NLEVEL * TOTAL * NLEVEL * TOTAL * NLEVEL * TOTAL * NLEVEL * NLEVEL * ************************************************************************************************************************** * CALO * 0 * 0 * 43590 * 4 * 294743 * 250 * 246447 * 971 * 250 * * CAL1 * 0 * 0 * 43056 * 0 * 284132 * 0 * 236482 * 0 * 0 * * CAL2 * 0 * 0 * 524 * 0 * 9617 * 0 * 8283 * 0 * 0 * * CAL3 * 0 * 0 * 0 * 0 * 9 * 0 * 8 * 0 * 0 * * MOD1 * 0 * 0 * 43056 * 21 * 284132 * 42829 * 236482 * 42807 * 42848 * * MOD2 * 0 * 0 * 524 * 0 * 9617 * 1570 * 8283 * 1570 * 1570 * * MOD3 * 0 * 0 * 0 * 0 * 9 * 2 * 8 * 2 * 2 * * SHIL * 0 * 0 * 4935 * 4935 * 54736 * 54736 * 44480 * 44480 * 58247 * * URPL * 0 * 0 * 35932 * 35932 * 52803 * 52803 * 22571 * 22571 * 89953 * * CHA1 * 0 * 0 * 1703 * 0 * 90507 * 0 * 86717 * 0 * 0 * * TUB1 * 0 * 0 * 1703 * 1670 * 90507 * 62174 * 86717 * 58423 * 62700 * * GAS1 * 0 * 0 * 33 * 33 * 28333 * 28333 * 28294 * 28294 * 28350 * * EPO1 * 0 * 0 * 920 * 920 * 47007 * 47007 * 43032 * 43032 * 47742 * * COPL * 0 * 0 * 0 * 0 * 2 * 2 * 2 * 2 * 2 * * CHA2 * 0 * 0 * 75 * 0 * 5037 * 0 * 4295 * 0 * 0 * * TUB2 * 0 * 0 * 75 * 74 * 5037 * 4079 * 4295 * 3338 * 4159 * * GAS2 * 0 * 0 * 1 * 1 * 958 * 958 * 957 * 957 * 958 * ************************************************************************************************************************** 146 GEOM700 – 1
Geant 3.16 GEANT User’s Guide GEOM900 Origin : A.C.McPherson Submitted: 16.12.83 Revision : F.Bruyant, R.Brun Revised: 16.12.93 Documentation : End of geometry definition CALL GGCLOS This routine should be called after all volumes, positions, hits and digits have been defined. Its action is confined to clean up the volume banks and to take any action required by the ordering techniques. GGCLOS performs all the requested geometry optimisation, included the creation of pseudo-divisions in volumes flagged by GSORD. It performs the local development of tha last leaves of the geometrical tree, where applicable. It also calls the routine GGDETV which prepares the prototype lists of volume names and maximum multiplicities which permit to identify uniquely any sensitive detector whose generic name has been declared through the routine GSDETV (and not GSDET) [HITS001]. GGCLOS must be called also after reading a geometry data structure from disk. 147 GEOM900 – 1
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CERN Program Library Long Writeup W
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Chapter 1: Catalog of Geant section
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IOPA500 KINE001 KINE100 KINE199 KIN
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Geant 3.21 GEANT User’s Guide AAA
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The routines made available for GEA
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outines, then you can type the foll
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AAAA Bibliography [1] H.J. Klein an
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2 Event simulation framework The fr
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• after each tracking step along
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GUDIGI GUOUT GTRIGC UGLAST GLAST GU
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Particles JPART Materials JMATE/JTM
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3 Summary of GEANT data records 3.1
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3.4 User applications KEY N I VAR S
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Geant 3.16 GEANT User’s Guide BAS
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SUBROUTINE UGEOM + (’TGT ’,2,
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LQ(JHEAD-1) user link IQ(JHEAD+1) I
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VALUE = GARNDM (DUMMY) DUMMY (REAL)
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Geant 3.16 GEANT User’s Guide CON
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1 Energy binning IDECAD Bin number
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Particle No. Mass(GeV) Charge Life
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¯Ω + ¯Ξ 0 π + 23.60 ¯ΛK + 67
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Geant 3.16 GEANT User’s Guide DRA
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The main drawing routines are: GDRA
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Another feature which is available
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z y x C CHARACTER*4 CHNAMS(5) INTEG
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CALL GDRAWC(’OPAL’,2,0.,10.,10.
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CALL GSATT(’HB’,’FILL’,3) C
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CALL GDRAW(’CAVE’,40.,40.,0.,10
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Figure 16: Example of use of GDSPEC
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CALL GDOPEN(3) CALL GDRAWC(’ALEF
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Computation of total crosssection o
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7. Update the number of interaction
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1= generation of secondaries enable
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DEEMAX The formula used by GEANT is
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The second problem has been solved
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GPHYSI Initialisation of physics pr
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• the mean number of tries is not
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as function of the variable u = Eθ
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GEANT 3.16 GEANT User’s Guide PHY
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where N Z(Z i ) A(A i ) ρ σ Avoga
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Word # PHFN bank (data area, contin
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2 Method If the energy of the radia
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The Auger or Coster-Kronig transiti
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• Case dielectric → metal. The
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| ⃗ k| = | ⃗ k ′′ | = k =
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Case dielectric → metal In this c
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Much of the difficulty in approxima
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CALL GMOLIE (OMEGA,BETA2,DIN*) OMEG
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where λ 0 = ¯h/p Compton waveleng
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2.3 Sampling of the distribution fu
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X 0 is the radiation length. From (
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where we have set Θ=θ/χ α . To
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The variable DCUTE in common /GCCUT
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2.2 Total cross-sections The integr
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For the other charged particles the
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POTI POTIL (REAL) average ionisatio
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ln(∫ σ γ dE/norm.factor) -4 -6
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VALUE = GBFSIG (T,C) GBFSIG calcula
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VALUE = GBRSGM (Z,T,BCUT) Z T BCUT
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[CONS]). Usually, this is done toge
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Geant 3.16 GEANT User’s Guide TRA
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VECT,SNEXT,SAFETY Compute distance
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VECT,SNEXT,SAFETY Compute distance
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VECT,SNEXT,SAFETY Compute SFIELD,SM
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SUBROUTINE GUSTEP +SEQ,GCKING,GCVOL
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CALL GRKUTA (CHARGE,STEP,VECT,VOUT*
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Geant 3.16 GEANT User’s Guide XIN
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Clicking then on the right button o
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YMED R “ Center Y coordinate ”
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HIDE is ON, the detector can be exp
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following levels (red arrows) and o
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Draw a polyline of ’npoint’ poi
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a dynamical 3-D analysis of the sim
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1. position the cursor at (uz0,vz0)
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CHUSET C “User set identifier”
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Set current attribute. 4.8 SSETVA [
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CALL GDCOL(-abs(icol)) 4.12 LWID lw
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Print matrixes’ specifications. 5
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12 GEANT/PHYSICS Commands to set ph
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PPCUTM R “Cut for e+e- pairs by m
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This common contains the threshold
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Geant 3.11 GEANT User’s Guide ZZZ
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GFKINE KINE001, KINE100, KINE199 GF
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GPSTAT GEOM700 GPTMED CONS001, CONS
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