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B04-1 – Trigger Upgrade Overview

B04-1 – Trigger Upgrade Overview. Wesley Smith, U. Wisconsin L2 Manager, WBS 401.4 August 26, 2013. L1 Upgrade TDR. Final presentation to LHCC was Tuesday June 11th Public version of the TDR here: https:// cds.cern.ch /record/1556311 Approved!. Upgrade Trigger Physics Performance.

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B04-1 – Trigger Upgrade Overview

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  1. B04-1 – Trigger Upgrade Overview Wesley Smith, U. Wisconsin L2 Manager, WBS 401.4 August 26, 2013 CD-1 Review -- B04-1: Trigger Upgrade Overview

  2. L1 Upgrade TDR • Final presentation to LHCC was Tuesday June 11th • Public version of the TDR here:https://cds.cern.ch/record/1556311 • Approved! CD-1 Review -- P05: Trigger Upgrade

  3. Upgrade Trigger Physics Performance • Physics priorities: • Measure all Higgs BR precisely as possible to confirm Standard Model or not ⇒ retain or improve current trigger capability critical • Want to be able to answer question of naturalness - whether or not there is new physics stabilizing Higgs mass • SUSY remains a leading candidate, but if so, must have light stops • Also must be able to trigger on & search for all variants (e.g. RPV with all hadronic final states) to draw a firm conclusion • Studied a set of benchmark physics channels • Looked at performance of these channels in 2012 analyses with & without L1 trigger upgrade at different luminosities • Based on a simplified trigger menu with a total rate < 100 kHz • Results summarized on next slide CD-1 Review -- B04-1: Trigger Upgrade Overview

  4. Physics Performance Summary(detail in subsequent talks) Average Improvement: 17% (Low Lumi) & 40% (High Lumi) CD-1 Review -- B04-1: Trigger Upgrade Overview

  5. Goals for CSC Trig. Upgrade • Remove limit of 3 segments per Muon Port Card • Each Muon Port Card covers one 20° phi sector • Particularly problematic for multiple collimated muons w/rising occupancy • Increase bandwidth in trigger links • Occupancy of segments from chambers will exceed optical link bandwidth to CSC Track-Finder Sector Processors • Dropped segments will degrade performance: lose momentum precision (higher rate) and/or tracks (inefficiency). • Improve upon successful features of current CSC Track-Finder • Enlarge LUT memory for pT assignment from MBs to GBs, → better “fit” to trajectory • Use more angles • Larger FPGA to handle more hits from PU, additional chambers • Improve momentum resolution • Full use of all track information → ç • Steeper rate v. pTthreshold curve → increases safety margin for high luminosity & high PU • Higher precision output track quantities/more μ candidates to Global Muon Trigger upgrade • η✕ϕ = 0.05 ✕ 2.5° → 0.0125 ✕ 0.015° • Accommodate new algorithms like those in Higher Level Trigger • invariant mass cuts, jet-lepton matching, … • Requires new high bandwidth (optical) links to Global Trigger CD-1 Review -- B04-1: Trigger Upgrade Overview

  6. PT Assignment Algorithm Studies • Sophisticated pT assignment (studied with BDTs) based on expanded list of information over current CSCTF • Tail Clipping: if a variable, e.g. Δφ12,is in 5% (10%, 15%) tail, demote pT to most probable value for given Δφ12 • Repeat over all 10 variables, report lowest demoted pT • Sharpens rate curve, factors of 2-3 rate reduction for modest efficiency loss (~5%, and programmable) CD-1 Review -- B04-1: Trigger Upgrade Overview

  7. Muon Trigger WBS Detail → Calorimeter Trigger M&S on Ops. Prog. Fermilab Director's Review -- US CMS Trigger Upgrade CD-1 Review -- B04-1: Trigger Upgrade Overview Wesley Smith, 16 July 2013

  8. 401.04.03 EMU Trigger Upgrade Cavern Counting Room Trigger MotherBoard Clock & Control Data MotherBoard Muon Sorter Clock&Control Sector Processors 401.04.03.04 Endcap Muon Track-Finder (U. Florida) 401.04.03.02 Muon Port Card Mezzanine* (Rice) 401.04.03.03 MPC-EMUTF Optical Fibers* (Rice) *M&S on Ops. Prog. μTCA: Advanced Mezzanine Cards from Telecommunications Computing Architecture (commercial telecommunications hardware) 401.04.03.05 EMUTF Infrastructure (U. Florida) 401.04.03.06: Muon Sorter (Rice) CD-1 Review -- B04-1: Trigger Upgrade Overview

  9. 401.04.03.02 Muon Port Card(Rice - M&S on Operations Program) (60 needed + 15 spares + 5 test setups = 80) x 60 +20 spares • 3 original optical links are still available • New mezzanine card with new FPGA and new links CD-1 Review -- B04-1: Trigger Upgrade Overview Use the existing MPC main board Backplane interface to TMB remains unchanged

  10. Muon Track Finder processor: MTF7 13 needed + 4 spares + 3 test setups = 20 Optimized for maximum input from muon detectors (84 input links, 24 output links) Dual card with large capacity for RAM (~1GB) to be used for pT assignment in track finding Current prototype based on Virtex 6 FPGAis undergoing final tests (RLDRAM memory access) Virtex 7 FPGA design is ~75% done, expected late 2013 401.04.03.04: EMU Track-Finder(U. Florida) Front: Optics card Back: Core FPGA cardwith PT LUT mezzanine CD-1 Review -- B04-1: Trigger Upgrade Overview

  11. 401.04.03.05: EMUTF Infrastructure( U. Florida) 401.04.02.04 Endcap Muon Track-Finder 401.04.02.06: Muon Sorter Not US* *Processing the resulting tracks with RPC or CSC hits is a US responsibility CD-1 Review -- B04-1: Trigger Upgrade Overview

  12. 401.04.03.06: Intermediate Sorter Upgrade(Rice) CD-1 Review -- B04-1: Trigger Upgrade Overview • Provide immediate CSC Trigger improvement in 2015 • Provide optical path to new μTCA Global Muon Trigger from old CSCTF from each endcap • Allows independent upgrade of individual endcaps • Add isolation to endcap muons from old CSCTF with a new mezzanine card on the old muon sorter to send an optical path to 2015 calorimeter trigger initial upgrade • Analogous to MPC upgrade:

  13. Goals for Cal. Trig. Upgrade • Improve electromagnetic object isolation • Use calorimeter energy distributions with PU subtraction • Sum up activity over time and regions of calorimeter to perform PU subtraction • Improve control on isolation of electrons, photons, taus, muons • Finer granularity of trigger tower processing used in isolation calculations • Provide for input from muon trigger of seed tower for isolation region • Improve Jet-Finding • Use PU-subtracted clusters • Improve efficiency & reduce rate for Tau Trigger • Use much narrower cone • Existing Tau trigger performance is poor (see next slide) CD-1 Review -- B04-1: Trigger Upgrade Overview

  14. Tau Trigger Big improvement in efficiency with ~10X rate reduction! Current tau trigger has large and negative PU dependence CD-1 Review -- B04-1: Trigger Upgrade Overview

  15. Upgrade Cal Trig: e/γ Improved control on isolation • Factor of 2-3 reduction in rate with small loss in efficiency CD-1 Review -- B04-1: Trigger Upgrade Overview

  16. Calorimeter Trigger WBS Detail ← Muon Trigger M&S paid byCMS-France CD-1 Review -- B04-1: Trigger Upgrade Overview

  17. ECAL Energy(TCC) HCAL Energy(HTR) Regional Calo Trigger Global Calo Trigger HF Energy(μHTR) HCAL Energy(μHTR) Current L1 Trigger System Upgrade L1 Trigger System Layer 1 Calo Trigger oSLB EM candidates Region energies oRM Layer 2 Calo Trigger Calo. Trigger Upgrade in Parallel: Split inputs from ECAL & HCAL Stage HCAL uHTR & assoc. Cal. Trigger Cards HCAL OpticalSplitters • Install ECAL optical SLB & optical RM (oRM) mezzanines during LS1 • Install HCAL optical splitters during Year End Technical Stop (YETS) • Install HCAL backend μHTRcards for input to new trigger • Install HCAL frontend electronics after LS2 (finer long. segmentation) US US UK UK CD-1 Review -- B04-1: Trigger Upgrade Overview

  18. HCAL & ECAL Trigger Primitives • Upgraded HCAL Readout & Trigger Electronics (μHTR) is after split that sends data to old electronics (HTR) • μHTR supplies TP to upgrade cal. trig., HTR continues to send to present cal. trig. • ECAL Trigger Concentrator Cards (TCC) are not upgraded, instead mezzanines w/trigger serial links are replaced (Lisbon): • Optical Serial Link Board oSLB replaces single copper link to current Regional Calorimeter Trigger (RCT – U. Wisc.) with two optical links (WBS 401.04.04.06) • One optical link to optical Receiver Module (oRM) on RCT (WBS 401.04.04.05) • Replaces copper Receiver Module • One optical link to input of Upgraded Calorimeter Trigger: CTP7 Card • 574 oSLB’s & oRM’s with Fibers installed in 2014 • French Contribution to Calorimeter Trigger (no US Upgrade Funds) • Presently oSLB & oRM in final prototype stage • oSLB: oRM: CD-1 Review -- B04-1: Trigger Upgrade Overview

  19. 401.04.04.02: Cal. Trig. ProcessorVirtex-6 Proto. Board – U. Wisconsin • 36 total + 8 spares + 2 test setups = 46 CTP6 JTAG/USB Console Interface Mezzanine Power Modules MMC Circuitry Back End FPGA XC6VHX250T/ XC6VHX380T 4X Avago AFBR-820B Rx Module 12x Multi Gig Backplane Connections Front End FPGA XC6VHX250T/ XC6VHX380T Dual SDRAM for dedicated DAQ and TCP/IP buffering Avago AFBR-810B Tx Module CD-1 Review -- B04-1: Trigger Upgrade Overview

  20. 401.04.04.02: Cal. Trig. ProcessorFinal Version: Virtex-7 – U. Wisconsin CTP7 • Replace 2 Virtex-6s with a Virtex 7 for processing+ZYNQ for embedded TCP/IP endpoint • 30A, 1V power module for FPGA logic core • 3x CXP Pluggable modules for 36 Tx + 36 Rx 10G optical links • 2x AFBR-820 modules for 24 Rx 10G optical links • Simpler design to execute than the CTP-6 • 36 total + 8 spares + 2 test setups = 46 1V 30A Supply 3.3V Supply 1.5V Supply CXP Module 12Tx + 12 Rx 2.5V Supply CXP Module 12Tx + 12 Rx Virtex-7 VX690T FPGA 12X Rx ZYNQ XC7Z030 EPP 12X Rx CXP Module 12Tx + 12Rx (CTP-6 CAD View) CD-1 Review -- B04-1: Trigger Upgrade Overview

  21. 401.04.04.03: Crosspoint IO Card: crate interconnections – U. Wisconsin (2/crate x 3 crates = 6 + spares) Controller (MMC and link mgmt) 4x4 Lane Bidirectional Multi Gig Backplane Connections 4X Avago AFBR-79EQDZ QSFP+ Module Positions Backplane Rx/TxRedriver ICs (top and bottom sides) CD-1 Review -- B04-1: Trigger Upgrade Overview

  22. 401.04.04: CTP Infrastructure:Vadatech VT894 Crate Test Setup (Final system: 3 crates w/ 12 CTP7 ea. + 2 test setups + spare = 6) TTC Downlink U. Wisconsin designed backplane with dense card interconnects manufactured & installed in commercial Vadatech VT892 Crate available in Vadatech Catalog BU AMC13 UW CTP-6 UW CTP-6 UW Aux Vadatech MCH CD-1 Review -- B04-1: Trigger Upgrade Overview

  23. Calorimeter Trigger Risk Mitigation • Goal (Original): • Provide readout of original RCT descoped during construction project • Present readout through GCT input buffer not workable with trigger evolution • Use connection to a single CTP6 prototype or CTP7 card for DAQ readout • optical Receiver Summary Card (oRSC) paid by DOE Nuclear • VME Slave Interface Card • Fits in current RCT Crates (1 per crate) • 18 Cards in 2015 System • Receives RCT Jet Sum Card Outputto GCTon Copper “SCSI” Data Cables • Provides direct optical input to GCT • Bypassing old optical conversion cards • Planned use for Heavy Ion Triggers • Prototype under test  • Multiple optical outputs provide: • Inputs for upgrade calorimeter trigger &parallel operation of old & new trigger wherever ECAL & HCAL electronics notavailable in 2015 CD-1 Review -- B04-1: Trigger Upgrade Overview

  24. ECAL energy Global Calo Trigger Regional Calo Trigger HCAL energy Cal. Trig. Partial Upgrade in 2015 Uses reprogrammed RCT clusters with improved algorithms in Layer-2 Also, brings in all the power of finer grain HF using “Slice Test” of Layer-1 & 2 Improved PU subtraction, Isolation Calculation (e/γ/τ/μ) & Half-tower Position Resolution Add to bring in finer grain EM clusters US Items: oRSCs, oSLB/oRMcommissioning CTP Layer 1 Processors RCT RO+Testing CTP UK Items: MP7 Layer 2 Processors 36 mHTRs HF energy 2 CTP7s 9 CTP7s Layer 1 Processors oRSC oRM ECAL & HF Clusters Half-tower position oSLB RCT RO + Testing 2 CTP7s 4x4 E+H Clusters 2x1 E+H Clusters 2-bit region ID Spare Layer 2 Calo Trigger Layer 2 Calo Trigger Heavy Ion Muon 4 MP7s Jets & Sums eGammaTau GCT fallback and Minimal Stage-1 fallback remains available Layer 2 Processors With just a fraction of final cards or even prototypes, derive many benefitsof fullupgrade, incl. muon isolation CD-1 Review -- B04-1: Trigger Upgrade Overview

  25. Trigger Staging • CTP7 M&S: no HB/HE Backend until 2016 • Delay purchase of 34 CTP7 cards until FY15 • Use 12 CTP7 Cards w/prototypes as additional spares & for test setups. • EMU CSCTF M&S: one endcap in 2015 & other in 2016 • Commission & test one endcap thoroughly so 2nd can be integrated quickly • Delay spares & use prototypes for spares, test setups • Compatible with Global Muon Trigger using different Endcap inputs • Stages and Content: CD-1 Review -- B04-1: Trigger Upgrade Overview

  26. Summary • US CMS Upgrades to Calorimeter & Endcap Muon triggers enable CMS to keep the inclusive lepton thresholds below the W peak, recover a tau trigger for high PU, and improve multi-jet triggers with PU subtraction (also benefits Heavy Ion program) • Plan allows for parallel operation of old & new trigger systems, commissioning & testing of new system during data-taking (with data) & evolution to final system while providing immediate availability of improved trigger in 2015 • Upgrade is based upon common μTCA hardware platform also used by HCAL & other CMS systems • Trigger Upgrade is technically feasible since based on working prototypes, & built by the same team that built original CMS Calorimeter & Muon triggers. • Trigger Upgrade can be accomplished within Cost & Schedule since based on working prototypes and experience in building the original CMS Calorimeter & Muon triggers. • Risks are understood and familiar due to team experience – risk is mitigated by parallel operation of existing and upgraded calorimeter systems CD-1 Review -- B04-1: Trigger Upgrade Overview

  27. Additional Slides CD-1 Review -- B04-1: Trigger Upgrade Overview

  28. Calorimeter Trigger Components CD-1 Review -- B04-1: Trigger Upgrade Overview

  29. Schedule/Milestones – Level 3 • Targeting completion of milestones 3 months earlier CD-1 Review -- B04-1: Trigger Upgrade Overview

  30. Schedule/Milestones – Level 4 CD-1 Review -- B04-1: Trigger Upgrade Overview

  31. Schedule – Critical Path • Critical path follows second phase of module production driven by funding profile CD-1 Review -- B04-1: Trigger Upgrade Overview

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