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Geant 3.16 GEANT User’s Guide HITS200 Origin : R.Brun, F.Bruyant, W.Gebel, M.Maire Submitted: 01.11.83 Revision : Revised: 17.12.93 Documentation : Routines to store and retrieve HITS CALL GSAHIT (ISET,IDET,ITRA,NUMBV,HITS,IHIT*) ISET IDET ITRA NUMBV HITS IHIT (INTEGER) set number (see below); (INTEGER) detector number; (INTEGER) number of the track producing this hit (INTEGER) array of volume numbers corresponding to list NAMESV of GSDET; (REAL) array of values for current hit elements; (INTEGER) current hit number, if 0 the hit has not been stored. Stores element values for current hit into the data structure JHITS. The values ISET, IDET and NUMBV can be found in the corresponding variables of common /GCSETS/. These values are set by the routine GFINDS every time that a particle is in a defined detector. CALL GSCHIT (ISET,IDET,ITRA,NUMBV,HITS,NHSUM,IHIT*) Same action as GSAHIT, but in case the detector identified by ISET, IDET and NUMBV contains already a hit for the same track, the routine will make a cummulative sum for the latest NHSUM elements of JHITS. The other previous elements of JHITS are replaced. That facility is particularly interesting in the case of hits generated into a calorimeter. No packing (i.e. 32 bits per hit element) should be requested for the last NHSUM hits in GSDETH and for these hits ORIG should be set to 0. CALL GPHITS (CHSET,CHDET) CHSET CHDET (CHARACTER*4) set name, if ’*’ prints all JHITS banks of all sets; (CHARACTER*4) detector name, if ’*’ prints hits in all detectors of set CHSET. Prints JHITS banks for detector CHDET of set CHSET. CALL GFHITS (CHSET,CHDET,NVDIM,NHDIM,NHMAX,ITRS,NUMVS, ITRA*,NUMBV*,HITS*,NHITS*) CHSET CHDET NVDIM NHDIM NHMAX ITRS NUMVS (CHARACTER*4) set name; (CHARACTER*4) detector name; (INTEGER)1 st dimension of arrays NUMBV and NUMVS:1≤NVDIM≤NV argument of GSDET; (INTEGER)1 st dimension of array HITS:1≤NHDIM≤NH argument of GSDETH; (INTEGER) maximum number of hits to be returned, this should be not larger than the second dimension of array NUMBV and HITS; (INTEGER) number of the selected track, if ITRS=0, all tracks are taken; (INTEGER) is a 1-dimension array of NVDIM elements that contains the list of volume numbers which identify the selected detector, 0 is interpreted as ’all valid numbers’; 164 HITS200 – 1
ITRA NUMBV HITS NHITS (INTEGER) is a 1-dim array of dimension NHMAX that contains on output for each hit the number of the track which has produced it; (INTEGER) 2-dim array (NVDIM,NHMAX) that containis on output for each hit the list of volume numbers which identify the detector, all values set to 0 means that no more volumes are stored; (REAL) 2-dim array (NHDIM,NHMAX) that containis NHITS hits; (INTEGER) number of hits returned, in case the total number of hits is greater than NHMAX, NHITS is set to NHMAX+1 and NHMAX hits are returned. This rotine returns the hits produced by track ITRS (or by any track) in the detector CHDET identified by the list NUMVS belonging to set CHSET. HITS(1,I) is element 1 of hit number I; NUMBV(1,I) is volume number 1 of hit number I; ITRA(I) is the track number corresponding to hit number I; The arrays NUMVS, NUMBV, HITS and ITRA must be dimensioned to: NUMVS(NVDIM) NUMBV(NVDIM,NHMAX) HITS(NHDIM,NHMAX) ITRA(NHMAX) CALL GFPATH (ISET,IDET,NUMBV,NLEV*,LNAM*,LNUM*) ISET IDET NUMBV NLEV LNAM LNUM (INTEGER) set number; (INTEGER) detector number; (INTEGER) array of numbers which identify uniquely detector number IDET; (INTEGER) number of elements filled of arrays LNAM and LNUM; (INTEGER) array of NLEV volume names stored in ASCII code in integers; (INTEGER) array of NLEV copy numbers. This routine returns the list of volume names and numbers which identify the complete ancestry in the JVOLUM data structure of the volume corresponding to the detector number IDET in set number ISET and which is identified by the volume numbers NUMBV (see GFHITS). GFPATH assumes that the detectors have been declared via GSDETV and not GSDET. The main use of GFPATH is to prepare the lists LNAM and LNUM required by the routine GLVOLU to fill the common /GCVOLU/. Once /GCVOLU/ is properly filled, it is possible to use the GEANT routines to transform from the local to the master reference system and so on. HITS200 – 2 165
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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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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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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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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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2.2 Total cross-sections The integr
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where φ(λ) = 1 ∫ c+i∞ exp (u
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Fast simulation for n 3 ≥ 16 If t
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VALUE = GBFSIG (T,C) GBFSIG calcula
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calculated dE dx − dE measured dx
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VALUE = GBRSGM (Z,T,BCUT) Z T BCUT
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where, (a − 1) 1 f(ν) = ( ) 1 ν
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[CONS]). Usually, this is done toge
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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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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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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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7 GEANT/CONTROL Control commands. 7
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To change lout in /GCUNIT/ Note: un
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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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LSTAT_7 C “user word” LSTAT_8 C
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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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SMULS SOMULS STMULS DPHYS3 ILABS SL
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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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