CERN Program Library Long Writeup W5013 - CERNLIB ...

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BREM RAYL DRAY ANNI HADR LABS STRA SYNC bremsstrahlung. The interacting particle (e − , e + , µ + , µ − ) is not stopped. The variable IBREM controls this process. IBREM =0 No bremsstrahlung. =1 (D) bremsstrahlung with generation of γ. =2 bremsstrahlung without generation of γ. Rayleigh effect. The interacting γ is not stopped. The variable IRAYL controls this process. IRAYL =0 (D) No Rayleigh effect. =1 Rayleigh effect. δ-ray production. The variable IDRAY controls this process. IDRAY =0 No δ-rays production. =1 (D) δ-rays production with generation of e − . =2 δ-rays production without generation of e − . Positron annihilation. The e + is stopped. The variable IANNI controls this process. IANNI =0 No positron annihilation. =1 (D) Positron annihilation with generation of photons. =2 Positron annihilation without generation of photons. Hadronic interactions. The particle is stopped in case of inelastic interaction, while it is not stopped in case of elastic interaction. The variable IHADR controls this process. IHADR =0 No hadronic interactions. =1 (D) Hadronic interactions with generation of secondaries. =2 Hadronic interactions without generation of secondaries. >2 Can be used in the user code GUPHAD and GUHADR to chose a hadronic package. These values have no effect on the hadronic packages themselves. Light ABSorption. This process is the absorption of light photons (particle type 7) in dielectric materials. It is turned on by default when the generation ofČerenkov light is requested (data record CKOV). For more information see [PHYS260]. ILABS =0 No absorption of photons. =1 Absorption of photons with possible detection. This flag turns on the collision sampling method to simulate energy loss in thin materials, particularly gases. For more information see [PHYS334]. ISTRA =0 (D) Collision sampling switched off. =1 Collision sampling activated. Synchrotron radiation in magnetic field. ISYNC =0 (D) The synchrotron radiation is not simulated. =1 Synchrotron photons are generated, at the end of the tracking step. =2 Photons are not generated, the energy is deposit locally. =3 Synchrotron photons are generated, distributed along the curved path of the particle. PHYS001 – 4 196
Computation of total crosssection or energy losses Generation of the final state particles Processes involving the photon (e + ,e − ) pair conversion PHYS 210 PHYS 211 Compton collision PHYS 220 PHYS 221 Photoelectric effect PHYS 230 PHYS 231 Photo fission of heavy elements PHYS 240 PHYS 240 Rayleigh effect PHYS 250 PHYS 251 Processes involving e − /e + Multiple scattering PHYS 320 or 325 or 328 Ionisation and δ-rays production PHYS 330 PHYS 331 or 332 Bremsstrahlung PHYS 340 PHYS 341 Annihilation of positron PHYS 350 PHYS 351 Generation of Čerenkov light PHYS 260 PHYS 260 Synchrotron radiation PHYS 360 Processes involvingµ − /µ + Decay in flight CONS 310 PHYS 400 Multiple scattering PHYS 320 or 325 Ionisation and δ-rays production PHYS 430 PHYS 331 or 332 Ionisation by heavy ions PHYS 431 Bremsstrahlung PHYS 440 PHYS 441 Direct (e + ,e − ) pair production PHYS 450 PHYS 451 Nuclear interaction PHYS 460 PHYS 460 Generation of Čerenkov light PHYS 260 PHYS 260 Processes involving hadrons Decay in flight CONS 310 PHYS 400 Multiple scattering PHYS 320 or 325 Ionisation and δ-rays production PHYS 430 PHYS 331 or 332 Hadronic interactions PHYS 500 or 510 PHYS 500 or 510 Generation of Čerenkov light PHYS 260 PHYS 260 Table 1.1: Processes currently implemented in GEANT 197 PHYS001 – 5
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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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Page 167 and 168: ITRA NUMBV HITS NHITS (INTEGER) is
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Page 197: Below are listed the data record ke
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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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Geant 3.16 GEANT User’s Guide PHY
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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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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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To change lout in /GCUNIT/ Note: un
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IPART I “Particle number” NAPAR
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8.5 CDIR [ chpath chopt ] CHPATH C
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9 GEANT/FZ ZEBRA/FZ commands 9.1 FZ
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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 GEANT/PHYSICS Commands to set ph
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Possible IDRAY values are: 0 1 2 To
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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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DENS density of current material in
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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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GEANT/DRAWING/KHITS, 372 GEANT/DRAW
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GPART, 13, 46, 61, 293 GPCXYZ, 40,
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PATCHY, 278 PCUTS, 399 PDIGI, 389 P
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