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Time of Flight Analysis
Progress on TOF Software
Frank Geurts for the TOF group
MSU -- Aug 13, 2003 F. Geurts -- Time-Of-Flight Analysis 2
outline detectors & data sets online software offline software: TOF in StEvent calibration status embedding status
MSU -- Aug 13, 2003 F. Geurts -- Time-Of-Flight Analysis 3
TOF detectors & data sets2001 2002 2003
Au+Au 20GeV p+p d+Au p+p Au+Au
pVPD 2x2 2x2 1+1 1x1 1x1 1x1
TOFp X X X X X X
TOFr -- -- -- X X XTPC
pVPDeast
pVPDwest
Aud
TOFx
East-TPC
TOFp TOFr
x
y
where, when & what ...
AuAu central 800k
AuAu mbias 210k
AuAu 20GeV 70k
pp (run 2) 5.1M
dAu TOFrTrg 2M
dAu mbias 6.6M
pp (run 3) 3M
MSU -- Aug 13, 2003 F. Geurts -- Time-Of-Flight Analysis 4
TOF online software in STAR online CVS -- tagged & bagged
TOFY01 TOFpDAQ v1 for pVPD+TOFp localmon for TOFpDAQ v1 HVSys monitoring software
TOFY02 TOFpDAQ v2 for pVPD+TOFp+TOFr localmon for v2 HVSys (unmodified) TOFr HV TOFr GasMon
usage: cvs co –r TOFY02 online/tof
MSU -- Aug 13, 2003 F. Geurts -- Time-Of-Flight Analysis 5
TOF offline software lots of code development for geometry, matching,
calibration, etc. move to the public domain, i.e. include in STAR production
provide ToF PID in StTrackPidTraits and in STAR μDST move calibration tables into STAR dBase
set up embedding scheme
MSU -- Aug 13, 2003 F. Geurts -- Time-Of-Flight Analysis 6
TOF in StEvent
DAQ
TOFMaker
TOFp MatchMaker
TOF NtupleMaker
StEvent
tofCollection
tofDatatofCelltofSlat
tofHit
trackNodesTOF DAQ
reader
TOF MatchNtuple
TOFr MatchMaker
MSU -- Aug 13, 2003 F. Geurts -- Time-Of-Flight Analysis 7
recent modifications/additions introduced StTofpMatchMaker
based on StTofAnalysisMaker already used for pVPD and TOFp calibrations
introduction of StTofrMatchMaker new approach for TOFr geometry
based on the GEANT description required ROOT update
review & CVS pending some final tests changes to StEvent::tofCollection()
modified StTofSlat and StTofHit added StTofCell
TOF analysis tools in StTofPool StTofpNtupleMaker
two tracks crossing one slat
one track crossing two slats
both:
track matching:
MSU -- Aug 13, 2003 F. Geurts -- Time-Of-Flight Analysis 8
near future additions TofCalibrator
calibrates TOFp slat and TOFr cell data
stores results in tofHit TOF PID traits
essentially identical to StTofHit μDST
pVPD info available in μDST (1-13 words/evt)
TOF Hit Data in μDST tracks
StEvent
tofCollection
tofDatatofCelltofSlat
tofHit
trackNodes
TOFCalibrator
pVPDCalibrator
pvpd
MSU -- Aug 13, 2003 F. Geurts -- Time-Of-Flight Analysis 9
TOF calibrationsTOFp AuAu
TOFp dAu
TOFr dAu
Llop
eLlo
pe
Ru
an
MSU -- Aug 13, 2003 F. Geurts -- Time-Of-Flight Analysis 10
TOF calibration status TOF calibrations based on private
match ntuples
pVPD finished for AuAu partially finished in dAu and pp (run 3)
for TOFrTrg’ed events various event classes (from different
degrees of coincidence) impact on calibration wide range of start timing resolutions in
dAu work in progress for all event classes
and dAu triggers see Bill Llope’s talk in spectra PWG on
Friday
TOFp finished for AuAu work in progress dAu TOFp calibr. macros ported to C++
objects for inclusion in STAR makers work done by Siva Nagisetty, Rice
TOFr partially finished for dAu
TOFrTrg data sample producing physics: see Lijuan Ruan’s talk
tomorrow code and tables need to be ported to
STAR production environment alternative calibration underway
pending new TOFrMatchMaker
pVPD(start only)
totalTOFp
totalTOFr
AuAu(central)
24 87 --
dAu 70-130(85*)
100-140 120*
pp ~110 140
start and total time resolutions in ps
*) TOFr PRL analysis
MSU -- Aug 13, 2003 F. Geurts -- Time-Of-Flight Analysis 11
calibration: near future StTofCalibrator
ToF info for TPC tracks migration of calibration tables into STAR dBase
calibration scheme for upcoming run FastOffline: matchMakers
quick update of STAR dBase detailed calibration based on μDSTs
MSU -- Aug 13, 2003 F. Geurts -- Time-Of-Flight Analysis 12
TOF embedding status embed TOF hits after TPC embedding
similar to EMC embedding (Alex S.) keep TOF geant data in geant.root
update StMcEvent introduce:
McTofHitCollection, McTofHit change:
StMcEvent, StMcTrack and StMcEventMaker
committing to STAR CVS 1k proton test sample
thanks to Eric TOF Mixer Maker
pending last tests ready to be committed
TOF association maker waiting for McEvent updates under construction
doEvents
TOF embedding
TPC embedding
vertexmultp.
DAQ
sim
geant.root
TPCmixer
tof maker
TPCreco
event.root
TOFsimulator
TOFmixer
TOFmatch
TOFassociation
TPCassociation
MSU -- Aug 13, 2003 F. Geurts -- Time-Of-Flight Analysis 13
Summary & Outlook online software in STAR repository TOF in STAR production
move private code to public domain
new Makers many updates to StEvent
Calibrations AuAu
pVPD & TOFp ready dAu
pVPD & TOFr for TOFrTrg preliminary pVPD & TOFp
calibration for full data set pp
pVPD & TOFr for TOFrTrg TOF embedding
EMC-based embedding scheme many updates in StMcEvent TOFp/r MixerMaker ready test data available
TOF PID in StEvent and μDST TOF PID traits for TPC tracks
Calibration pVPD/TOF calibration tables into
STAR dBase pVPD Calibrator and TOF
Calibrators fill StTofHit upcoming run: calibration in Fast
Offline TOF embedding
finish work on TOF Associator request TPC embedding with
special TOFp/TOFr tracks GEANT geometry maintenance