CERN Program Library Long Writeup W5013 - CERNLIB ...

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NDPUSH NJFREE NJGARB NJINVO LINSAV LMXSAV +SEQ /GCTIME/ Execution time control C COMMON/GCTIME/TIMINT,TIMEND,ITIME,IGDATE,IGTIME TIMINT TIMEND ITIME IGDATE IGTIME time reqeusted for the run phase, after initialisation (TIME, not used); time requested for program termination phase (1, TIME); number of events between two tests of time left (1, TIME); current date in integer format YYMMDD; current time in integer format HHMM; +SEQ /GCTMED/ Array of current tracking medium parameters C COMMON/GCTMED/NUMED,NATMED(5),ISVOL,IFIELD,FIELDM,TMAXFD,STEMAX + ,DEEMAX,EPSIL,STMIN,CFIELD,PREC,IUPD,ISTPAR,NUMOLD COMMON/GCTLIT/THRIND,PMIN,DP,DNDL,JMIN,ITCKOV,IMCKOV,NPCKOV NUMED NATMED current tracking medium number; name of current tracking medium (ASCII codes stored in an integer array, 4 characthers per word); ISVOL -1 non-sensitive volume with sensitive volume tracking parameters; 0 non-sensitive volume; 1 sensitive volume; IFIELD 0 no field; 1 user defined field (GUFLD); 2 user defined field (GUFLD) along z; 3 uniform field (FIELDM) along z; FIELDM maximum field; TMAXFD maximum turning angle in one step due to the magnetic field; STEMAX maximum step allowed; DEEMAX maximum fraction of energy loss in one step due to continuous processes; EPSIL boundary crossing accuracy; STMIN minimum step size limitation due to: energy loss, multiple scattering, magnetic field bending or, if active, Čerenkov photons production; 440 ZZZZ010 – 23
CFIELD constant for field step evaluation; PREC effective step for boundary crossing (0.1× EPSIL); IUPD 0 new particle or new medium in current step; 1 no change of medium or particle; ISTPAR 0 global tracking parameters are used; 1 special tracking parameters are used for this medium; NUMOLD number of the previous tracking medium; THRIND β −1 of the current particle; PMIN minimum momentum in GeV c −1 for the photon transport; DP momentum window to generate the photons; DNDL number of photons generated per centimeter; JMIN pointer to the photon threshold energy bin; ITCKOV flag for the Čerenkov photon generation: 0 disactivated; 1 activated; IMCKOV flag for the Čerenkov photon generation in current material, same meaning than above; NPCKOV number of energy bins for the Čerenkov photons; +SEQ /GCTRAK/ Track parameters at the end of the current step C PARAMETER (MAXMEC=30) COMMON/GCTRAK/VECT(7),GETOT,GEKIN,VOUT(7),NMEC,LMEC(MAXMEC) + ,NAMEC(MAXMEC),NSTEP ,MAXNST,DESTEP,DESTEL,SAFETY,SLENG + ,STEP ,SNEXT ,SFIELD,TOFG ,GEKRAT,UPWGHT,IGNEXT,INWVOL + ,ISTOP ,IGAUTO,IEKBIN, ILOSL, IMULL,INGOTO,NLDOWN,NLEVIN + ,NLVSAV,ISTORY PARAMETER (MAXME1=30) COMMON/GCTPOL/POLAR(3), NAMEC1(MAXME1) VECT GETOT GEKIN VOUT NMEC LMEC NAMEC track parameters (x, y, z, p x /p, p y /p, p z /p, p); particle total energy; particle kinetic energy; track parameters at the end of the step, used internally by GEANT; number of mechanisms active for current step; list of mechanism numbers for current step; list of mechanism names for current step (ASCII codes stored in an integer, 4 characthers per word); NSTEP number of steps for current track; MAXNST maximum number of steps allowed (10000); DESTEP total energy lost in current step; DESTEL same as DESTEP, kept for backward compatibility; ZZZZ010 – 24 441
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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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6 NKVIEW IVIEW JDRAW NKVIEW JV = IB
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SHAD EDGE when HIDE is ON, selects
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x1xxxx 1xxxxx add the text EVENT NR
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DRAW Bibliography [1] R.Bock et al.
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2 Volumes with contents A volume ca
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The user can position a volume thro
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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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y y x x y y y y z z x x z z y y x x
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CAVE PAR1 specifications 20/10/94 y
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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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1. sample x from 1 1 ln 1 x c x set
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E bind , eV 10 5 10 20 30 40 50 60
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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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where: Γ = kα 2π [ ɛ = W E 1 1
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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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Geant 3.21 GEANT User’s Guide XIN
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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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6 GEANT/CREATE It creates volumes o
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YES NO 6.7 SCONS name numed inrdw o
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7 GEANT/CONTROL Control commands. 7
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Page 449 and 450: STEP PLIN PLOG BE2 PLASM TRNSMA BOS
Page 451 and 452: C ESHELL - Shells potentials in eV
Page 453 and 454: Geant 3.11 GEANT User’s Guide ZZZ
Page 455 and 456: GFKINE KINE001, KINE100, KINE199 GF
Page 457 and 458: GPSTAT GEOM700 GPTMED CONS001, CONS
Page 459 and 460: ZZZZ Bibliography [1] T.Sjöstrand
Page 461 and 462: CDRSGA, 297 CGMULO, 221 CHANGEWK, 3
Page 463 and 464: GEANT/DRAWING/KHITS, 372 GEANT/DRAW
Page 465 and 466: GPART, 13, 46, 61, 293 GPCXYZ, 40,
Page 467: PATCHY, 278 PCUTS, 399 PDIGI, 389 P
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