CERN Program Library Long Writeup W5013 - CERNLIB ...

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8 Positron annihilation [PHYS 350]. 9 Compton scattering [PHYS 220]. 10 Bremsstrahlung for electrons and muons Words 1 to 90, mean free path for electrons [PHYS 340] Words 91 to 180, mean free path for muons [PHYS 440]. 11 Pair production by gammas and muons Words 1 to 90, for gammas [PHYS 210]. Words 91 to 180, for muons [PHYS 450]. 12 Delta ray production by electrons and muons Words 1 to 90, for e − e − → e − e − [PHYS 330]. Words 91 to 180, for e + e − → e + e − [PHYS 330] Words 181 to 270, for e − → e − [PHYS 430]. 13 Photo-fission Only for material with atomic number A¿200 [PHYS 240]. CONS199 – 4 56
Geant 3.16 GEANT User’s Guide CONS200 Origin : R.Brun Submitted: 01.06.83 Revision : F.Carminati, M.Maire Revised: 08.12.93 Documentation : Description of the routines Tracking medium parameters CALL GSTMED (ITMED,NATMED,NMAT,ISVOL,IFIELD,FIELDM,TMAXFD,STEMAX, DEEMAX,EPSIL,STMIN,UBUF,NWBUF) This routine associates a set of tracking parameters to a material, defining a so-called tracking medium. Every GEANT volume must be associated to an existing tracking medium. The routine stores the parameters of the tracking medium ITMED in the data structure JTMED. ITMED NATMED NMAT ISVOL IFIELD (INTEGER) tracking medium number; (CHARACTER*20) tracking medium name; (INTEGER) material number corresponding to ITMED; (INTEGER) sensitivity flag (see later): ≤0 not a sensitive volume; >0 sensitive volume; (INTEGER) magnetic field flag: =0 no magnetic field; =1 strongly inhomogeneous magnetic field (returned by the user function GUFLD): tracking performed with the Runge-Kutta method by the routine GRKUTA; =2 inhomogeneous magnetic field (returned by the user function GUFLD), tracking along a helix performed by the routine GHELIX; =3 uniform magnetic field along the z axis of strength FIELDM, tracking performed along a helix by the routine GHELX3; FIELDM TMAXFD STEMAX (REAL) maximum field value (in Kilogauss); (REAL) maximum angular deviation due to the magnetic field permitted in one step (in degrees); (REAL) maximum step permitted (cm); DEEMAX (REAL) maximum fractional energy loss in one step (0 < DEEMAX ≤ 1); EPSIL STMIN UBUF NWBUF (REAL) boundary crossing precision (cm); (REAL) minimum value for the maximum step imposed by energy loss, multiple scattering, Čerenkov or magnetic field effects (cm); (REAL) array of NWBUF additional user parameters; (INTEGER) number of additional user parameters. Note: the tracking medium number can in principle be any positive integer from 1 to 65,535. However this number is used directly by GEANT as the number of the pointer to the data structure where the information is stored. When a pointer is defined, all pointers from 1 to the one allocated are created, if not already existing. Every time data structures are moved in memory, all the links are potentially scanned for update. This can be time consuming and it can seriously affect performances. So a continuous range of numbers should be used for tracking media. 57 CONS200 – 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
Page 7 and 8: Geant 3.21 GEANT User’s Guide AAA
Page 9 and 10: The routines made available for GEA
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Page 15 and 16: 2 Event simulation framework The fr
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Page 23 and 24: 3 Summary of GEANT data records 3.1
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0 1 2 1 0 1 0 1 2 3 4 5 6 7 Figure
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2 Divisions along arbitrary axis As
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9.BL2 half-length along x of the si
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1.DZ half-length along the z axis;
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ECAL BOX specifications 18/11/93 EC
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ECAL SPHE specifications 18/11/93 E
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Geant 3.16 GEANT User’s Guide GEO
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• if the CHONLY flag is set to MA
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Dynamic ordering The list of neighb
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are represented by their values. A
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Where • @302 is the block number
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GEOM Bibliography [1] French Standa
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Geant 3.16 GEANT User’s Guide HIT
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ITRA NUMBV HITS NHITS (INTEGER) is
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HITS Bibliography 175 HITS510 - 3
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Geant 3.16 GEANT User’s Guide IOP
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0 if only IER] structures read in o
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Geant 3.16 GEANT User’s Guide IOP
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IOPA Bibliography [1] J.Zoll. ZEBRA
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Geant 3.16 GEANT User’s Guide KIN
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NTRACK ITRA JKINE NTRACK JK 1 2 3 4
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Geant 3.16 GEANT User’s Guide PHY
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Below are listed the data record ke
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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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where: n number of energy bins q i
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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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5 Processes involving Čerenkov pho
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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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where φ(λ) = 1 ∫ c+i∞ exp (u
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Counts 900 800 Landau 700 40 600 20
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Fast simulation for n 3 ≥ 16 If t
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ξ/E Max (hereafter κ) relative im
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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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∆σ σ = { 12 − 15% for T ≤ 1
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T(MeV) C Pb ∆El 0 ∆E l ∆σ l
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eV). At present the values recommen
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calculated dE dx − dE measured dx
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Figure 43: Stopping powers in Carbo
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esults can be seen in table 2 and 3
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VALUE = GBRSGM (Z,T,BCUT) Z T BCUT
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The functions F i (Z,X,Y) (i = σ,
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where, (a − 1) 1 f(ν) = ( ) 1 ν
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NLM DENS CORR IPART (INTEGER) numbe
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Hydrogen (bound) Sodium Copper Hydr
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[25] M. Gavrila. Relativistic l-she
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[78] R.W.Williams. Fundamental Form
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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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e drawn. NAMNUM contain the arrays
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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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5 GEANT/GEOMETRY Geometry commands.
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Print matrixes’ specifications. 5
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YES NO 6.7 SCONS name numed inrdw o
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IPART I “Particle number” NAPAR
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8.5 CDIR [ chpath chopt ] CHPATH C
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Check the structure of one or more
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FACTL R “Scale factor for SL” D
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12.14 PAIR [ ipair ] IPAIR C “Fla
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PPCUTM R “Cut for e+e- pairs by m
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LGET_15 C “user word” LGET_16 C
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13.6 GEOM [ lgeom˙1 lgeom˙2 lgeom
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LSTAT_7 C “user word” LSTAT_8 C
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XINT Bibliography [1] R.Brun and P.
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This common contains the threshold
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ITR3D track being scanned (used tog
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NCLAS1 NCLAS2 NCLAS3 IHOLE CGXMIN C
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* PARAMETER (MAXJMP=30) COMMON/GCJU
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GYMAX GZMIN GZMAX GXXXX GYYYY GZZZZ
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RADDEG radiants to degrees conversi
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PCUTNE parameterisation threshold f
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SMULS SOMULS STMULS DPHYS3 ILABS SL
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NTETA TETMIN TETMAX MODTET number o
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S2 S3 SS1 SS2 SS3 LEP IPORLI ISUBLI
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CFIELD constant for field step eval
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NEXT 1 particle has reached the bou
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C COMMON/GCVOL2/NLEVE2,NAMES2(15),N
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STEP PLIN PLOG BE2 PLASM TRNSMA BOS
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C ESHELL - Shells potentials in eV
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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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ZZZZ Bibliography [1] T.Sjöstrand
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CDRSGA, 297 CGMULO, 221 CHANGEWK, 3
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