Muon Trigger Slice Report Sergio Grancagnolo for the Muon Trigger group INFN-University of Lecce...
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Transcript of Muon Trigger Slice Report Sergio Grancagnolo for the Muon Trigger group INFN-University of Lecce...
Muon Trigger Slice Report
Sergio Grancagnolo for the Muon Trigger group
INFN-University of Lecce
CERN Jan 23, 2007
23 Jan 2007 Sergio Grancagnolo 2
Muon Trigger Slice
FasFastt
IsolIsolComCombb
~2 kHz
10 ms <latency> time
TrigMooreTrigMoore
MOOREMOORE
~ 200 Hz
1 s <latency>time
LVL1 LVL1 SimulationSimulation
LVL2 SelectionLVL2 Selection EF SelectionEF Selection2.5 s fixed latency time
MuId SAMuId SA
MuId COMBMuId COMB
B Physics B Physics processorprocessor
DAQDAQ
RPCRPC
MuCTPIMuCTPI
TGCTGC
CTPCTP
LVL2: muon RoIsLVL2: muon RoIs
DAQ: muon candidates
DAQ: muon candidates
DAQDAQ
75 KHzm(6) @ 1033 ~23 KHz
23 Jan 2007 Sergio Grancagnolo 3
Samples and Releases• CSC production with Athena 12.0.4 and previous• DetDescrVersion = CSC-01-XX-YY
• Reconstruction with Athena 12.0.4
Results presented are not complete, other validations are on going as more data will be available. More details on what will be shown here can also be found in “TAPM” and “T&P week” meetings.
23 Jan 2007 Sergio Grancagnolo 4
HLT software status in 12.0.4• Sequence for a X signature:
– muFast (LVL2 - Muon Spectrometer only) + muFastHypo (test pT>X )– IDSCAN (LVL2 - Inner Detector only)– muComb (LVL2 - MS &ID) + muCombHypo (pT test)– Muon reconstruction EF ID– TrigMoore (EF)
• MS reconstruction• Extrapolation to IP• Combined fit with ID tracks (reconstructed with newTracking)
– TrigMooreHypo (test pT of combined muons)
• Signatures:– mu6l, mu6, mu20i for HLTCONFIGVERSION=CSC-02– mu0, mu5, mu20i for HLTCONFIGVERSION=CSC-02-900GeV
• Vertical slice configured for trigger menus at 900GeV in addition to standard configuration
– No implementation of the isolation cuts yet
23 Jan 2007 Sergio Grancagnolo 5
AODs
• Output of trigger objects in AOD to allow rerunning of hypothesis algorithms
• Trigger AOD contents
LVL1 LVL2 EFRecMuonRoI MuonFeature TrigMuonEF
CombinedMuonFeature
23 Jan 2007 Sergio Grancagnolo 6
LVL1
23 Jan 2007 Sergio Grancagnolo 7
LVL1 Barrel Muon Trigger Rates
Rates as shown in last T&P week
Muon sources
6 GeV6 GeV threshold
Lumi=1033
5 GeV5 GeV threshold
Lumi=1033
CosmicCosmicthresholdLumi=1033
/K 10800 Hz 21800 Hz 62500 Hz
b 1640 Hz 2220 Hz 3360 Hz
c 970 Hz 1400 Hz 2400 Hz
W 3 Hz 3 Hz 3 Hz
t Negligible Negligible Negligible
Sum 13.5 kHz 25.5 kHz 68.3 kHz
Ri Ld i
dpTpT _ inf
pT _cutoff
(pT ) dpT
Level-1
Efficiency
Inclusive μ cross-section @ LHC
(prompt μ and /K decay)
23 Jan 2007 Sergio Grancagnolo 8
There is inconsistency between There is inconsistency between TGC cabling database in TGC cabling database in release 12.0.4 and <12.0.4.release 12.0.4 and <12.0.4.
<5% efficiency loss with older release for high pT muon(20GeV)<5% efficiency loss with older release for high pT muon(20GeV) with eta~1.2 and FWD region (small effect for low pT muon)with eta~1.2 and FWD region (small effect for low pT muon)
LVL1 Muon Endcap Simulation: Current LVL1 Muon Endcap Simulation: Current Status Status The latest version : TrigT1TGC-00-01-18-05 (collected in 12.0.4)The latest version : TrigT1TGC-00-01-18-05 (collected in 12.0.4)
[1]Use RDO generated by release 12.0.3x[1]Use RDO generated by release 12.0.3xExecute TrigT1TGC with release 12.0.4Execute TrigT1TGC with release 12.0.4
since coincidence since coincidence window is not optimalwindow is not optimal
[2]Use RDO generated by release <12.0.3[2]Use RDO generated by release <12.0.3MuonRdoToMuonDigit.ApplyPatchForTGC = TrueMuonRdoToMuonDigit.ApplyPatchForTGC = True
Patch will be introducedPatch will be introducedin release 13 so that user canin release 13 so that user canuse RDO (not necessary touse RDO (not necessary tostart from HIT).start from HIT).
To get the latest LVL1 endcap muon trigger performanceTo get the latest LVL1 endcap muon trigger performance
to get correct IDs.to get correct IDs.
23 Jan 2007 Sergio Grancagnolo 9
Overlap resolution in the MuCTPI
• MuCTPI simulation is able to MuCTPI simulation is able to handle all kinds of overlaps in handle all kinds of overlaps in release 12.0.3.release 12.0.3.
• The plots demonstrate the The plots demonstrate the MuCTPI’s current efficiency to MuCTPI’s current efficiency to resolve fake double-counts resolve fake double-counts between muon sectors. between muon sectors. (Best (Best and worst cases shown.)and worst cases shown.)
• The Barrel-Endcap overlaps The Barrel-Endcap overlaps can be handled pretty well, can be handled pretty well, while the Endcap-Endcap while the Endcap-Endcap overlaps show problems at low overlaps show problems at low ppTT..
before MuCTPIafter MuCTPI
23 Jan 2007 Sergio Grancagnolo 10
Expected fake double-count rates
Overlap typew/o overlap removal in MuCTPI
with overlap removal in MuCTPI
Barrel-Barrel 169 Hz 81 Hz
Barrel-Endcap 174 Hz 8 Hz
Endcap-Endcap 486 Hz* 315 Hz*
Forward-Forward 43 Hz* 28 Hz*
Total 872 Hz 432 Hz
* Not using strip masks on sector edges.
Rates of fake 6 GeV di-muon triggers at L=1033 cm-1s-2
23 Jan 2007 Sergio Grancagnolo 11
Other LVL1 on-going work
• Implementation of configurations mechanism for non-standard trigger (cosmics, 5GeV threshold)
23 Jan 2007 Sergio Grancagnolo 12
LVL2
23 Jan 2007 Sergio Grancagnolo 13
Fast: endcaps
Barrel
LUT vs r
Endcap
LUT vs
Track finding efficiencyw.r.t. LVL1
~ 99.5% ~ 100%
algo time
on Xeon @ 2.4 GHz~ 1.5 ms < 1 ms
Tail extension
over 210% @ 6 GeV
20% @ 20 GeV
7% @ 6 GeV
8% @ 20 GeV
Resolution5.1% @ 6 GeV
3.7% @ 20 GeV
11% @ 6 GeV
12% @ 20 GeV
fit of the resolution core
1.5 fit
1.5 fit
12.0.4 first release where the algorithm for endcaps
runs in the slice
23 Jan 2007 Sergio Grancagnolo 14
Offline
Emulation
Inner station has less coverage than medium-outer stations. To check impact on acceptance of a three point measurements vs two point measurements, an offline emulation of the LVL2 Fast has been implemented in the endcaps, using also the inner station measurement. Resolutions function of eta,phi (local). Pt=-6 GeV
Preliminary
Offline studies
Results agree with online code.Loss in acceptance only in some marginal regions.
Including inner station, resolution improves (<10%) in most regions except some eta, phi regions
23 Jan 2007 Sergio Grancagnolo 15
Without TRT
BARREL:
• Algorithm for the barrel finalized for 12.0.3
• Matching with the ID track done at the external surface of the CALO match , match & z match all
studied with respect the muon pT
– matching efficiency 99.2% with 3 • performance checked with a new
single muon production (11.0.6)• used ~ 1.5x106 events produced
with the spread of the interaction point
• cut on the matching window optimized for muon tracks with pT of 6 GeV
Comb: physics performanceBarrel
Endcap: as of now no back extrapolation is available, hence the association between ID and muon track is driven only by the pT estimated in the two subdetectors
23 Jan 2007 Sergio Grancagnolo 16
Performances with misaligned data• check of performances while LUTs and alignement of geometry are not optimal
• use of the available sample at 5,10,50,100,300 GeV– misaligned geometry: ATLAS-CSC-01-02-00
• performance of Fast is lowered but Comb almost recover it– no TRT propagation of IDSCAN always used
23 Jan 2007 Sergio Grancagnolo 17
LVL2 on-going workWork in progress (ready for 13.0.0):• deploying the pattern recognition in the innermost
endcap
• refining pT estimation with the use of innermost station
• back extrapolation for the combined reconstruction in the endcap
• correcting the LVL2 geometry model with the alignment• accessing the MDT configuration database• online access of the MDT calibration constants
23 Jan 2007 Sergio Grancagnolo 18
Event Filter
23 Jan 2007 Sergio Grancagnolo 19
EF Performances
pTrec / pT
gen
MOORE tracks with 2 <3
3.65%
3.70%
2.75%
Release 12.0.4
pT = 50 GeV
10k single muon events
MuidSA tracks successfully fitted
MuidCB tracks successfully fitted
No bias observed within statistical errors
Results agree with expected performances from offline algorithms
23 Jan 2007 Sergio Grancagnolo 20
pT rec / pT gen - SIGMA
• Blue = MOORE• Red = MuidSA• Pink= MuidCB
Expected trend of pT resolution vs eta.
Increasing at critical barrel-endcap transition, as observed in offline reconstruction.
Resolutions
Release 12.0.3
Release 12.0.4
23 Jan 2007 Sergio Grancagnolo 21
Algorithm EfficienciespT=100 GeV
Efficiency drop in correspondance of the feets
23 Jan 2007 Sergio Grancagnolo 22
EF plans for 13.0.0
• ID seeded version• Package split in order to be more friendly to new
developers• Topological algorithms• Migration to new EDM
– Implementation of Alg tools in order to share code with offline
– Will get collections of unseeded (for wrapped mode) or of seeded (for online use) PrepRawData
23 Jan 2007 Sergio Grancagnolo 23
Conclusions
• Muon slice is performing well• All levels are ready, isolation requirement using
calorimeter, still to be integrated• Next improvements
– Configurables• drive with configurables the configuration of the full set of
Tools/Services used by algorithms, where possible– Migration to "New Steering"
• FEX algorithm migrated for LVL2 and EF• Hypothesis algorithm coding on going for EF, done for LVL2• need extensive testing
– New performances need to be evaluated as new data will be available, compatibly with csc notes timescale