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Trigger Menus and Rates Trigger Menus and Rates Trigger Menu Development Group: Leonard Apanasevich, Anne-Fleur Barfuss, Pedram Bargassa, Eric Conte, Sivia Goy Lopez, Jonathan J. Hollar,  Chi Nhan Nguyen CMS Physics Week  - May 13 th  , 2009

Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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Page 1: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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

Page 2: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

● 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 

Page 3: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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

Page 4: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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!

Page 5: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

    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

Page 6: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

● „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 

Page 7: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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

Page 8: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

● 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)

Page 9: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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)  

Page 10: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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

Page 11: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

Cross Triggers (8E29)Cross Triggers (8E29)

    11  Trigger Menus,  C.N.Nguyen      CMS Physics Week, 2009 May 13th 

● No known issues

● + 0 Hz

Page 12: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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

Page 13: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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) 

Page 14: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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

Page 15: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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

Page 16: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

● 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 

Page 17: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

● 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 

Page 18: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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 

Page 19: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

Menu 1E31designed for the next large 

MC­exercise

    19  Trigger Menus,  C.N.Nguyen      CMS Physics Week, 2009 May 13th 

Page 20: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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

Page 21: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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!)

Page 22: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

Muon Triggers (1E31)Muon Triggers (1E31)

    22  Trigger Menus,  C.N.Nguyen      CMS Physics Week, 2009 May 13th 

● No known issues

● + 41 Hz

Page 23: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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?)

Page 24: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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

Page 25: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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

Page 26: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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?)

Page 27: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

MinBias Triggers (1E31)MinBias Triggers (1E31)

    27  Trigger Menus,  C.N.Nguyen      CMS Physics Week, 2009 May 13th 

● No known issues

● + 9 Hz

Page 28: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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?)

Page 29: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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. 

Page 30: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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

Page 31: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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

Page 32: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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

 

Page 33: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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 

Page 34: Trigger Menus and Rates - University of California, … · to be used for the first real collisions – ... (MET) Hz Monitoring triggers Physics triggers JetMET Triggers ... (probably

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