ASCII Output File Format
ASCII output files containing "events" are produced by the
Gismo full simulation and by the fastMC. It is planned to replace these
ASCII files by SIO files in the near future. The types of data
present for each event in the file depend on the generating program, but
are always a subset of the following:
- MC particle information (Gismo, fastMC, full recon)
- Calorimeter hit information (Gismo, full recon)
- Track information (fastMC, full recon)
- Tracker, VXD hit information (Gismo)
- Calorimeter cluster information (fastMC, full recon)
- Muon system strip hits (Gismo)
In the detailed description below, subsystems are alphabetically
ordered by name. Their data is delimited by their name as the first line
and 'end' as the last. Several subsystems have packed hit identifiers. See
the reference geometry page
for their definitions.
AEventMarker
run & event #
EMCalorimeter, HADCalorimeter, LUMCalorimeter,
MUCalorimeter (same format)
# hits
List of hits
(packed) hit ID
energy deposit (GeV)
# contributing MC particles
list of MC particle contributions
MC particle pointer
energy deposit by that particle
MCPrint
# MC particles
List of particles:
MC pointer parent MC pointer
PDG particle type GISMO status code
charge termination point initial
4-momentum (position at Cal front face) (dir cosines at front face)
Tracker
# hits in the tracker
List of hits:
hit # position of hit (x,y,z)
energy deposit
time MC
pointer
Calorimeter Clusters
# clusters
List of clusters::
energy <phi> <theta> <R> phi-RMS Theta-RMS R-RMS
# hits (for FastMC, this will be zero)
List of hits
(packed) hit id energy
List of MC parents
MC pointer
VXD
# hits in the VXD
List of hits:
hit # position of hit (x,y,z)
energy deposit
time MC
pointer
MUStripSystem
# hits in the strip system
List of hits:
packed hit ID
# contributing MC particles
list of pointers to contributing particles
MC pointers
Notes:
- GISMO has a PRIMARY particle, which is a fake. It is the first in
the list and has a zero parent pointer.
- MC particles that are parts of showers in the calorimeter are
suppressed. However, albedo can dribble back in to the central
detector and create hits. These are attributed to the shower
particles, but they never appear in the MC list. For the moment, these
can be treated as background in the central detector.
- calorimeter means and RMS' are energy weighted.
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