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Trigger Menus and Rates Trigger Menus and Rates
Trigger Menu Development Group: Leonard Apanasevich, AnneFleur Barfuss, Pedram Bargassa,
Eric Conte, Sivia Goy Lopez, Jonathan J. Hollar, Chi Nhan Nguyen
CMS Physics Week May 13th , 2009
● Proposed Menus in 2008: One single menu with >160 HLT paths which was supposed to cover a wide luminosity range L = 8.01029 1.01032 cm2s1
● Change of Strategy:❍Decided to reduce number of trigger paths (maintenance, manpower)❍Different menus for 3 reference luminosities:
8.0 10 29 (8E29), 1.0 10 31 (1E31) and 1.0 10 32 cm2s1 (1E32)● Initial version of lean 8E29 and 1E31 menus were presented to all groups
shortly after November 2008 CMS week in order to be reviewed by all● Trigger Reviews:
❍ Thu Dec 11 (CMS week): JetMET❍ Mon Dec 15: Muons❍ Wed Dec 17: Egamma❍ Wed Jan 14: btag/tau/pflow❍ Wed Jan 21: Crosstriggers❍ Wed Feb 4: AlCa/MinBias/Commissioning triggers
● After reviews and following approval process: Trigger Development Group (TMD) started to compile the menus and evaluate the rates
IntroductionIntroduction
2 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
Software & SamplesSoftware & Samples
3 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Many new trigger paths not yet implemented in 22X release: Running OpenHLT on Summer08 samples, considered as best choice to give estimates on rates and give fast feedback to groups
● OpenHLT has been validated several times and has been shown that it can consistently reproduce rates made from regular HLT software
● However, some few algorithms cannot be simulated:❍ other estimate approaches applied or planned to Menus & Rates are preliminary!
● Samples:❍ sbQCD (9.9 M events): /MinBias/Summer08_STARTUP_V5_STARTUP_V5_v1/GENSIMRAW ❍ CMSSW_2_2_5❍ STARTUP_V8 GlobalTag❍ DigiToRaw redone
❍8E29:❏ No L1 jet corrections except for flat 0.7 HF correction, also no HLT jet corrections❏ L1 scales optimised for low energies (convertion scheme from ET to GT bit configuration):
L1Menu_Commissioning2009_v0_L1T_Scales_20080926_startup_Imp0_Unprescaled_cff❍1E31:
❏ L1/HLT Jet corrections applied❏ L1 scales optimised for higher energies:
L1Menu_MC2009_v0_L1T_Scales_20080922_Imp0_Unprescaled_cff
General RemarksGeneral Remarks
4 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Latest versions of menus and more detailed info about definitions, known issues, can be found here (+ links from there): https://twiki.cern.ch/twiki/bin/view/CMS/TSG_03_V_09_8E29https://twiki.cern.ch/twiki/bin/view/CMS/TSG_03_V_09_1E31https://twiki.cern.ch/twiki/bin/view/CMS/TriggerReviews_0809
● General constraints:❍L1 rate: 17 kHz (50 kHz / safety factor)❍HLT rate: 1 GB/s / event size / safety factor
❏ 150 Hz for physics triggers ❏ AlCa: higher rates at lower event sizes
❍Timing NOT covered here
● Menus & Rates are preliminary!
5 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
Menu 8E29can be considered as a candidate menu to be used for the first real collisions –
focus on commissioning – many triggers are dominated by noise
● „U“ indicates uncorrected jets (L1 or HLT)● „HLT_L1*“ denotes HLT passtrough triggers (no HLT cut)● No known issues
● 35 (jets) + 5 (MET) Hz Monitoring triggers Physics triggers
JetMET Triggers (8E29)JetMET Triggers (8E29)
6 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
Muon Triggers (8E29)Muon Triggers (8E29)
7 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Loser muon quality cuts for L1_SingleMuOpen than L1_SingleMu0● HLT_L2MuX: Level2 only (no tracker) reconstruction● Iso: L2 calorimetric isolation and L3 tracker isolation applied● Note: Effectively all good muons reconstructed at L1+HLT
will be written to disk● + 33 Hz
Monitoring triggersPhysics triggers
if a physics trigger needs to be prescaled: Backup triggers
● LW: Large pixel matching window – SW: Startup window (narrower than LW)● EleId: Electron ID based on cluster shape variables● SC10: Additional supercluster with ET>10 GeV required
● No known issues
● + 30 Hz
Electron Triggers (8E29)Electron Triggers (8E29)
8 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
Monitoring triggers Physics triggers
Backup triggersExpress Stream
(fast analysis/monitoring on CAF)
Photon Triggers (8E29)Photon Triggers (8E29)
9 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● TrackIso: track isol. (< 2 tracks in iso cone) – cannot be simulated in OpenHLT accurately, here rough estimate only
● LooseEcalIso: < 3 GeV or 10% of photon energy in iso cone – rough estimate only● Invariant mass window cuts (>2, 24.5, 811 GeV) taken into account Bfield bending
cannot be done with OpenHLT – rough estimate only compare with Roberto's talk from 23 Feb 2009 (http://indico.cern.ch/getFile.py/accesscontribId=10&sessionId=1&resId=1&materialId=slides&confId=51622)
● + 9 Hz (considered as solid estimation, despite OpenHLT limitations)
Tau / bjet Triggers (8E29)Tau / bjet Triggers (8E29)
10 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Taus: No „U“ b/c at HLT correction never applied by default● Missing triggers presently not simulated by OpenHLT in this table:
❍ HLT_StoppedHSCP
● + 5 (taus) + 0 (bjets) Hz
U
U
Cross Triggers (8E29)Cross Triggers (8E29)
11 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● No known issues
● + 0 Hz
MinBias Triggers (8E29)MinBias Triggers (8E29)
12 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● What is a proper MinBias trigger? Different kinds of possible MB triggers prepared:❍ Hcal based (probably noisy)❍ Ecal based (probably less noisy)❍ Pixel based❍ Track based
● L1_ZeroBias not available in the 2.2.X: ❍ L1_MinBias_HTT10 is used instead
● + 14 Hz
Comissioning Triggers (8E29)Comissioning Triggers (8E29)
13 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● HLT_BackwardBSC, HLT_ForwardBSC, HLT_TrackerCosmics: technical L1 bits, not implemented in OpenHLT
● + 9 Hz (3 missing triggers above will be prescaled to have < 3 Hz)
AlCa Triggers (8E29)AlCa Triggers (8E29)
14 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● No known issues
● Note: AlCa requests more statistics higher rates available at lower event sizes here
L1 Menu (8E29)L1 Menu (8E29)
15 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Resulting L1 table: As expected no problems with the bandwidth budget at this luminosity
● ~5.8 kHz
● about 70 triggers
Summary: Individual Rates by Group (8E29)Summary: Individual Rates by Group (8E29)
16 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Rates by group: 35 + 5 + 34 + 38 + 5 + 0 + 0 + 14 + 9 = 140 Hz ● Still room for missing HLT_StoppedHSCP and BSC/TrackerCosmics trigger
Summary: Cumulative Rates by Group (8E29)Summary: Cumulative Rates by Group (8E29)
17 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
Summary: Data Throughput by Group (8E29)Summary: Data Throughput by Group (8E29)
18 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Estimated data throughput of 23 MB/s well within bandwidth budget
Menu 1E31designed for the next large
MCexercise
19 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
Jet Triggers (1E31)Jet Triggers (1E31)
20 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Corrections applied for L1 jets and HLT single and double jets● Note: here still using obsolete L1 jet correction scheme – needs to be reevaluated! ● DiJetAve paths always use uncorrected jets● No known issues
● 15 Hz
MET Triggers (1E31)MET Triggers (1E31)
21 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● SumET and HT triggers added● HLT_HT250 should have its prescale decreased from 50 to 10
(but not much additional rate expected from that)● Missing triggers presently not simulated by OpenHLT
❍ HLT_HT200: First tries to simulate it by summing jets, gives 25 (+15 Hz!)Need to check!
● + 2 Hz (+ 15 Hz!)
Muon Triggers (1E31)Muon Triggers (1E31)
22 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● No known issues
● + 41 Hz
Electron Triggers (1E31)Electron Triggers (1E31)
23 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Changed from LW to SW (better alignment expected)● Missing triggers presently not simulated by OpenHLT:
❍ HLT_Ele15_SW_EleId_L1R, HLT_Ele15_SC15_SW_EleId_L1R, HLT_Ele25_SW_EleId_LooseTrackIso_L1R
● The following triggers have everything simulated except their special treatment of the Bfield:❍ HLT_DoubleEle5_SW_Jpsi_L1R❍ HLT_DoubleEle5_SW_Upsilon_L1R
● + 26 Hz (maybe 510 Hz more?)
Photon Triggers (1E31)Photon Triggers (1E31)
24 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● The following triggers cannot be properly simulated with the present version of OpenHLT, so their present rates are just an indication:❍ HLT_Photon10_LooseEcalIso_TrackIso_L1R❍ HLT_Photon20_LooseEcalIso_TrackIso_L1R❍ HLT_Photon25_LooseEcalIso_TrackIso_L1R❍ HLT_DoublePhoton15_VeryLooseEcalIso_L1R
● + 24 Hz
Tau / bjet Triggers (1E31)Tau / bjet Triggers (1E31)
25 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Changes needed because rate was higher than in review due to bug ❍ HLT_SingleIsoTau30_Trk5: L2 Et threshold raised from 20 to 30 GeV❍ HLT_DoubleLooseIsoTau15_Trk5: Additional requirement
L3 Tracker isolation is required for at least one of the 2 tau candidates
● + 14 (taus) + 0 (bjets) Hz
Cross Triggers (1E31)Cross Triggers (1E31)
26 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Missing triggers presently not simulated by OpenHLT:❍ HLT_Ele10_LW_L1R_HT150❍ HLT_Mu5_HT50
● Not much additional rate expected though
● + 8 Hz (+ 12 Hz?)
MinBias Triggers (1E31)MinBias Triggers (1E31)
27 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● No known issues
● + 9 Hz
Comissioning Triggers (1E31)Comissioning Triggers (1E31)
28 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● HLT_BackwardBSC, HLT_ForwardBSC, HLT_TrackerCosmics: technical L1 bits, not implemented in OpenHLT
● + 1 Hz (+ 23 Hz?)
AlCa Triggers (1E31)AlCa Triggers (1E31)
29 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● HLT_IsoTrack is assigned a rate of 9 Hz "by hand", not yet evaluated.
L1 Menu (1E31)L1 Menu (1E31)
30 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Resulting L1 table: Also no problems with the bandwidth budget at this luminosity
● ~8.6 kHz
Summary: Individual Rates by Group (1E31)Summary: Individual Rates by Group (1E31)
31 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● 83 + 6 missing triggers = about 90 triggers
Summary: Cumulative Rates by Group (1E31)Summary: Cumulative Rates by Group (1E31)
32 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Rates by group: 15 + 2 + 41 + 50 + 14 + 0 + 8 + 9 + 1 = 142 Hz● + 2530 Hz (?) by adding missing triggers: complete table and prescales to be revisited soon
Summary: Data Throughput by Group (1E31)Summary: Data Throughput by Group (1E31)
33 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th
● Estimated data throughput of 31 MB/s well within bandwidth budget
Summary:● Change of Trigger Menu Strategy
❍From a single menu with wide luminosity coverage to multiple menus for different reference luminosities
● Preliminary menus & rates for L = 8.0 10 29 (8E29), 1.0 10 31 (1E31) presented● Preliminary rates are within bandwidth limits
❍Though still not all paths can be simulated in OpenHLT❍All trigger paths are currently being checked onebyone ❍New draft versions are being announced regularly
Plans:● Timing needs to be checked● Move to CMSSW 31X to evaluate rates with regular HLT software● Starting 1E32 menu (redo HLT exercise)● Physics performance (ongoing reviews to validate performance of current menus)● 2_2_6_HLT 8E29 menu is currently running in MWGR (first results expected soon)
Summary & PlansSummary & Plans
34 Trigger Menus, C.N.Nguyen CMS Physics Week, 2009 May 13th