CERN Program Library Long Writeup W5013 - CERNLIB ...

Geant 3.16 GEANT User’s Guide HITS120
Origin : R.Brun Submitted: 01.11.83
Revision : Revised: 17.12.93
Documentation :
DETector Digitisation parameters
CALL GSDETD
(CHSET,CHDET,ND,CHNMSD,NBITSD)
CHSET
CHDET
ND
CHNMSD
NBITSD
(CHARACTER*4) set name;
(CHARACTER*4) detector name;
(INTEGER) number of elements per digitisation;
(CHARACTER*4) array of ND names for the digitisation elements;
(INTEGER) array of ND, NBITSD(I) (I=1,...,ND) is the number of bits into which to pack the
I th element of the digit.
Defines digitisation parameters for detector CHDET of set CHSET. The routine must be called at initialisation,
after the geometrical volumes have been defined, to describe the digitisation elements and the way to pack
them in the data structure JDIGI.
Example
Following on from the example in [HITS110], we want to add the digitisation information to detector EPHI
of set ECAL. The information which should be stored for each digitisation is the ADC pulse height in the
lead glass block, so that a digitisation in this scheme could look like:
Element
Value
EPHI 12
EZRI 41
BLOC 3
ADC 789
The code to define the digitisation information could be:
CHARACTER*4 CHNMSD
DATA CHNMSD/’ADC ’/
DATA NBITSD/16/
CALL GSDETD(’ECAL’,’BLOC’,1,CHNMSD,NBITSD)
CALL GFDETD
(CHSET,CHDET,ND*,CHNMSD*,NBITSD*)
Returns the digitisation parameters for detector CHDET of set CHSET. All arguments as explained in GSDETD.
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