B05 – 4 Global Correlator 402.06.05 R. Cavanaugh U. Illinois Chicago and Fermilab, L3 Manager, HL-LHC Global Correlator 402.06.05 Director’s Review of US-CMS HL-LHC Upgrades 2-3 February 2016 R. Cavanaugh, 2015 February 2-3 Director's Review – L1 Trigger Overview 1
Outline § WBS definition § Basis of Estimate § Schedule § Cost and Labor Profiles § Risk and Contingency § R&D status and plans § ES&H and QA § Summary 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 2
402.06 Organization Chart to L3 402.06 Trigger Jeff Berryhill (FNAL) 402.06.05 402.06.03 402.06.04 Global Correlator Calorimeter Trigger Muon Trigger Rick Cavanaugh Wesley Smith (UW) Darin Acosta (UF) (UIC/FNAL) 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 3
DR Question 3 CMS Correlator Management Experience § R.C. (U. Illinois Chicago and Fermilab) § CMS Particle Flow & Tau ID Convener 2007-2008 § Fermilab LHC Physics Center Coordinator 2010-2013 § Phase-1 Stage-1 Global Calorimeter Trigger § Wesley Smith (U. Wisconsin) – US CMS HL-LHC L3 Calorimeter Trigger Project Manager § CMS Trigger Project Manager 1994-2007, § Trigger Coordinator 2007 – 2012 § Trigger Performance and Strategy Working Group 2012 - 2015 § US CMS L2 Trigger Project Manager (construction and operations) 1998 – present § US CMS Phase 1 Upgrade L2 Trigger Project Manager 2013 – present § Sridhara Dasu (U. Wisconsin) § US CMS L3 Manager Calorimeter Trigger (construction & operations) 1998 – present § US CMS L3 Manager Phase 1 Calorimeter Trigger Upgrade 2013 – present § Author of original and upgrade cal. trig. Algorithms 1994 – present § Darin Acosta (U. Florida) § CMS Trigger (co)Project Manager, 2012-16 § EMU Track-Finder, 1998- present § Ivan Furic (U.Florida) § CSC and EMU Track-Finder projects, 2008-present § Alexi Safonov (TAMU) § CSC Trigger Motherboards § Jeff Berryhill (Fermilab) § CMS & US CMS Phase-1 Stage-1 Calorimeter Trigger Project Manager 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 4
DR Question 3 CMS Correlator Engineering Experience § Tom Gorski (U. Wisconsin) – Electrical Engineer – Lead Engineer § Over a decade of engineering on the CMS Calorimeter Trigger § Delivered final phase of original Regional CMS Calorimeter Trigger § Delivered Phase 1 Layer-1 Calorimeter Trigger Upgrade Electronics § Ales Svetek (U. Wisconsin) – Firmware Engineer § 3 years on Phase 1 Calorimeter Trigger Upgrade Firmware § (4 years ATLAS Beam Conditions Monitor Firmware, DAQ, Commissioning, Detector Operations) § Marcelo Vicente (U. Wisconsin) – Firmware Engineer § 3 years on Phase 1 Calorimeter Trigger Upgrade Firmware + HCAL Firmware § 2 Years on ECAL Phase 1 Upgrade Trigger Primitive Generation Electronics (oSLB, oRM) § Jes Tikalski (U. Wisconsin) – Software Engineer § 3 years on Phase 1 Calorimeter Trigger Upgrade Software and embedded systems § Alex Madorsky (U. Florida) – Electrical Engineer § Over a decade of engineering on CMS Trigger, EMU, Track-Finder (since 1999) § Eric Hazen (Boston U.) – Electrical Engineer § Long history of engineering on CMS hadron calorimeter electronics and trigger § Shouxiang Wu (Boston U.) – Electrical Engineer § Long history of engineering on CMS hadron calorimeter electronics and trigger 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 5
WBS Definition 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 6
DR Question 1 Level-1 Trigger Architecture Track Trigger Calorimeter Trigger Muon Trigger Tracker Stubs GEM + ECAL EB HCAL HGCAL HCAL CSC DT RPC iRPC HB on-det HF single xtal MPC LB HGCAL off-det fan-out fan-out Splitters Regional Calo Trigger Layer Muon Track-Finder Tracker Track-Finding Global Calo Trigger Layer Sorting/Merging Layer U.S. Covers fraction Global Correlations (Matching, PT, Isolation, vertexing, etc.) Global Trigger 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 7
DR Question 1 Example: Correlating L1 Tracks & Muons § Without L1 Tracks § mis-assignment of high p T to low p T muons § rate flattens above O(30) GeV § Match L1 Tracks & Muons § better resolution o sharper turn-on § large rate reduction o factor O(5-10) at 20 GeV From CMS Technical Proposal: CERN-LHCC-2015-10 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 8
DR Question 1 Example: Correlating L1 Tracks & EM-clusters § Electrons § Match L1 tracks to EM-clusters o reduces rate by factor O(8-10) at 20 GeV § Challenge: tracker material o Retain high efficiency for finding L1 track § Possible solution: o Different selections high vs low p T electrons § Efficiency ~95% in barrel From CMS Technical Proposal: CERN-LHCC-2015-10 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 9
DR Question 1 Example: Correlating L1 Tracks & EM-clusters § Photons § Isolate EM-clusters from L1 tracks o reduces diphoton rate by factor O(5) for 20 GeV leading photon § Challenge: tracker material o Photon conversions § Possible solution: o Apply annulus track isolation cone § Example: § track iso of EM-cluster above 20 GeV § H to γγ signal eff: ~90%; Bkg eff: ~30% From CMS Technical Proposal: CERN-LHCC-2015-10 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 10
DR Question 1 Example: Correlating L1 Tracks & Calo-clusters PU=140, 14 TeV 1.2 Efficiency CMS PhaseII Simulation § Taus 1 § Try two (early) approaches 0.8 o start w/ calo cluster (TkCaloTaus) 0.6 – match to tracks 0.4 0 + - VBF H → τ τ – apply track-based isolation CaloTaus 0.2 TkCaloTaus (CaloTaus and Tracks) o start w/ tracks (TkEmTaus) TkEmTaus (EM and Tracks) 0 – match to EM-cluster 0 50 100 150 200 vis E (GeV) τ MC T § Either algorithm able to § maintain ~50 kHz rate with ~50% eff. for H to ττ signal § Rate reduced by factor O(5-6) From CMS Technical Proposal: CERN-LHCC-2015-10 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 11
DR Question 1 Example: Event Vertexing § Find Primary Vertex § Fast: histogram z position of track, weighted by track p T o Millimeter-level precision § Match tracks to PV From CMS Technical Proposal: CERN-LHCC-2015-10 1 Efficiency § Match tracks to calo-only jets 0.95 § Calculate vertex of each jet 0.9 § Require jets have similar vertex CMS Phase-2 Simulation 0.85 (e.g. within 1 cm) Efficiency for |z(jet) - z(true)| < 1cm All-hadronic ttbar, <PU>=140 0.8 § Efficiency nearly 95% for Jet | | < 2.0, p > 20 GeV η T jets with p T above 50 GeV 0.75 0 50 100 150 200 250 300 jet p [GeV/c] T 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 12
DR Question 1 Example: Event Vertexing § Determine MHT from § calo-jets matched to common vertex § tracks-only matched to primary vertex § Example: Signal <MET> ≈ 200 GeV: § track-only MET o Rate comes in well below 750kHz menu limit o Efficiency 80%-85% with few 10s kHz rate § calo-only MET or MHT From CMS Technical Proposal: o Completely out of reach CERN-LHCC-2015-10 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 13
DR Question 1 Model for L1 Correlator Trigger Hardware Calculate global sums (MET, SET, etc), sort Based on successful objects, remove duplicates/ghosts, etc Phase 1 Architecture for CMS Calorimeter Trigger development Processing L1 Objects Global Global jets e's μ 's τ 's γ 's Σ 's Trigger Base processors on existing CMS Inspired by particle flow Virtex7 trigger processor boards … … … (PF already used at HLT in Run-I) development development development Processing Regional … … jets jets jets e's μ 's τ 's γ 's Σ 's e's μ 's τ 's γ 's Σ 's e's μ 's τ 's γ 's Σ 's Crate A (“barrel-”) Crate D (“endcap+”) Crate B (“barrel+”) … L1 Calo L1 Calo L1 Muons L1 Muons L1 Calo L1 Muons L1 Tracks L1 Tracks L1 Tracks 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 14
DR Question 1 Correlator Trigger Workflow preprocess+distribute L1 calo, L1 muons, L1 tracks Match L1 tracks to L1 Calo-clusters Match L1 tracks to L1 muons Calculate L1 track corrected objects and characteristics Use L1 tracks to Match L1 tracks to find primary vertex primary vertex Calculate L1 track isolation of objects 0.5 μ s 1.0 μ s 1.5 μ s 2.0 μ s 2.5 μ s 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 15
DR Question 2 WBS Overview § WBS includes all Engineering and Technical activities as well as M&S to produce the Correlator L1 Trigger electronics. § The system takes as its input data on optical fibers from the CMS Track, Calorimeter, and Muon Triggers and provides processed trigger data for the CMS Global Trigger. § WBS includes managing production of the boards, engineering in support of the production of the boards, procurement of the optical components, FPGAs and all other components on the Correlator L1 Trigger electronics. § WBS also includes fabrication of the PCBs and assembly of the finished Correlator L1 Trigger electronics. § Costs associated with production of boards are assumed to be consistent with the costs experienced with the Phase 1 Trigger Upgrade with appropriate economies of scale applied when quotes justify them. § Less expensive optical parts and FPGAs lack bandwidth to process trigger data in planned number of cards and crates, resulting in a multiplication of the system in size by factors of 2-4, which costs significantly more in both M&S and labor. § Technology extrapolations may potentially reduce costs but not included. 02-Feb-2016 R. Cavanaugh HL-LHC Correlator Trigger 16
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