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