401-04-04 Calorimeter Trigger Sridhara Dasu, University of Wisconsin DOE CD1 Review 26 August 2013 Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Calorimeter Trigger WBS Detail ← Muon Trigger M&S paid by CMS-France Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Calorimeter Trigger Components Type Name Purpose TCC Trigger Concentrator Card Existing ECAL trigger primitives (TP) (France) oSLB Optical Serial Link Board Transmit ECAL TPs to RCT & CTP (Portugal / France) mHTR HCAL Trigger & DAQ Board Create and transmit HCAL TPs RCT Regional Calorimeter Trigger Existing trigger system oRM Optical Receiver Modules Receive ECAL TPs on RCT (Portugal / France for Stage-1) oRSC Optical Regional Summary Card Convert & transmit RCT output (US DOE NP for Stage-1) CTP Compact Trigger Processor Large FPGA w/ optical & backplane CIOX Compact IO cross-point switch Intra-crate sharing switch MP7 Multipurpose Processor Large FPGA w/ only optical links (UK) Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

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 trigger, HTR continues to send to present trigger ECAL Trigger Concentrator Cards (TCC) are not upgraded, instead their mezzanines with 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: OSLB Output / oRM Input: 4x channels @ 1.2 Gbps  4.8 Gbps Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

401.04.04.02: CTP Card Concept Virtex-7 VX690T FPGA Main processor card Virtex-7 690T for processing ZYNQ for TCP/IP + linux 60 10G optical Input links 36 10G optical Output links Function: Find ET clusters & transmit to Layer-2 Card Count = 46 36 total + 8 spares + 2 test setups 1.5V Supply 1V 30A Supply 3.3V 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 BG View) Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

CTP: Virtex-6 Prototype Exists Power Modules JTAG/USB Console Interface Mezzanine 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 Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

CTP-6 Intraboard link eyepattern Validation of signal integrity on CTP6 Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

HCAL TPG to CTP Integration Test 12-links tested at 6.4 Gbps – no errors Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Running Linux on CTP6 FPGA – PetaLinux Startup screen via USB console Root login, pinging controller PC at 192.168.1.2 Running on CTP-6 back end FPGA (`VHX250T) Important step towards CTP-7 ZYNQ-based Linux Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Advantage of Linux System on Chip Physicists can contribute to CTP6 software Familiar, reliable environment Faster development cycles Use of IPBus and uHAL over TCP/IP (CMS standards) Coupled with AMC13 (Boston), DAQ can be implemented more easily No need for custom firmware or kernel software for monitoring and control Postdocs are already using Petalinux  Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

CTP: Basis of Estimate - Hardware CTP7 is simpler than CTP6 prototype Engineering effort for in-house design based on CTP6 work Procurement of PCBs is based on recent CTP6 purchase Good estimate of cost and schedule from prototype manufacture Quotes available for all parts Virtex-7 690T is the major cost driver – with recent quote 3 690Ts donated by Xilinx 5 690Ts purchased from Xilinx Total of 8 FPGAs in-hand for prototypes Optical modules based on recent purchase Miscellaneous parts also have quotes or estimated from prototype purchases (power modules) Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

CTP: Basis of Estimate - Effort Firmware and software efforts estimated from prototype testing + prior RCT experience Firmware algorithms for testing provide the basis for the core firmware, which is the most complicated Tom Gorski and Mathias Blake Trigger algorithm firmware work is based on prior experience managing GCT project (UK) Wesley Smith was L1 project manager overseeing GCT Software effort is based on current RCT Sophistication of embedded Linux / TCP and shorter timeline for implementation requires professional software effort Jes Tikalsky Bulk of testing software from post-doc and graduate student Pam Klabbers, Evan Friis and graduate students will develop software Board and Firmware/Software done by the same group (Wisconsin) results in efficiencies Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

401.04.04.03: Crosspoint IO Card – U. Wisconsin Function: For inter-board connections Input/Output: 48x 4.8-6.4 Gbps Prototype exists Fully tested Firmware is minimal and exists CIOX cost well known Ready for production (2/crate x 3 crates = 6 + spares) Controller (MMC and link mgmt) 4X Avago AFBR-79EQDZ QSFP+ Module Positions 4x4 Lane Bidirectional Multi Gig Backplane Connections Backplane Rx/Tx Redriver ICs (top and bottom sides) Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

401.04.04.04: 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 Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

CTP: Risk and Mitigation Strategy The dominant risks are: Availability of ALL trigger primitive inputs from ECAL, HCAL in optical format Validation of large optical link plant in limited time Fully validated trigger algorithms in firmware Control and operations software Risk mitigation strategy: Continue to provide fully operational current trigger system in parallel with upgrade commissioning Partial operation of the upgrade systems provide tangible benefits from 2015 onwards Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Calorimeter Trigger Risk Mitigation oRSC Function: Conversion to optical oRSC Input: RCT egt and jet clusters 80 MHz Parallel ECL oRSC Output: 6x copies at 6.4 Gbps optical Goal (Original): Provide readout of original RCT descoped during construction project Present readout through GCT input buffer not workable with trigger evolution Uses 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 Output to GCT on 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 not available in 2015 Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

oRSC Card Status 4 Boards manufactured and tested 12 layer board, with Isola iSpeed Laminate for high-speed SERDES Kintex-7 355T-2 as the RCT parallel-to-optical-Tx interface device Spartan-6 for VME Slave Interface and I2C/general device controller Two Avago miniPOD 12-lane transmitters for optical outputs per card One card per RCT crate, capturing the output from the Jet Summary Card, and receiving clock/control signals from the RCT Crate Clock Card Card is functional: Tested oRSC to CTP6 optical rx/tx at 6.4 Gbps (23 links) oRSC integration test with MP7 (UK) planned for July 2 oRSCs can be used to fully emulate the 18-crate RCT output Will be used for developing RCT readout validation in 2013 Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

oRSC-CTP6 Monitoring and Validation Zero bit errors 10^-14 BER! Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

CTP6 Readout Validation Two Virtex6 FPGAs on CTP6 Both have Microblaze embedded processor Enables straight forward development in C++ Read out captured transmitter data via IPBus protocol from remote server Back End FPGA embedded processor running Linux serves IPBus over TCP/IP Forward IPBus packets over serial protocol to FPGA2 Able to readout arbitrary memory locations from both FPGAs Receive upgrade commands for writing FPGA configuration images and additional Linux executables to onboard flash memory Front End FPGA embedded processor running standalone app Able to accept and decode IPBus Packets Control or report status of all 48 fiber links Read capture RAMs for all or selected fibers Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

CTP Readout Configuration Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

CTP Monitoring and Validation Software Software status and control Real Time monitor link status Real time fiber link receiver control Read out from selected link Capture RAMs Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

CTP6 / Linux Monitoring & Validation Six links connected from oRSC to CTP6 during integration test Displays real time fiber connection status for each of 48 CTP6 fiber inputs Overflow, Underflow, Loss of Sync, Data Error Detect, and PLL Lock All six fiber links locked and error free Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

CTP / Linux Monitoring & Validation Fiber Capture RAM readout SW controllable capture Sync character to start capture Length of Capture Links to readout Capture RAM auto clears on each capture All six links capture expected pattern from oRSC Captured data automatically checked by host Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

oRSC to MP7 Link Validation Bathtub Curve Eye Diagram Extraordinary margin available in bathtub curve Superb eye opening measured at MP7 receiver Zero Bit errors with overnight iBERT PRBS testing Data validation: oRSC pattern RAM to MP7 capture RAM Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Demonstrators & Critical Integration Tests mHTR to CTP6 integration test at Madison (done) Wisconsin/Minnesota : 12 links operated successfully oRSC to CTP6 demonstrator at Madison (done) Test 2-3 oRSCs and interface before shipment to CERN oRSC to CTP6 platform at Prevessin (done) 2 oRSCs emulate RCT + 1 CTP6 for RCT readout and algorithm tests Full platform for system operations and control software development oRSC - MP7 Integration test at Prevessin (done) Wisconsin/Imperial July 2013 Milestone CTP6 - oRSC-oRM/RCT - oSLB/TCC Integration Test at Prevessin Wisconsin/Lisbon/LLR October 2013 Milestone CTP6 - oRSC-oRM/RCT - oSLB/TCC -uHTR Integration Test at 904 Wisconsin/Lisbon/LLR/Minnesota November 2013 Milestone CTP7 - MP7 Integration test at Prevessin Wisconsin/Imperial March 2014 Milestone Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Adiabatic Upgrade Timeline 2013 M&O + R&D Activity : oRSC construction, installation Firmware development for RCT readout and testing using CTP6 Lisbon / France : oSLB and oRM construction, installation Minnesota / Wisconsin : mHTR to CTP6 testing 2014 Ensure fully working legacy RCT system with oRSC + CTP6 RO CTP7, CIOX, … construction, validation Firmware development for CTP7 testing and 2015 operation 2015 Commission and operate Stage-1 system Firmware development and integration of Stage-2 system 2016 Commission and operate Stage-2 system Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

CT Milestones Activity ID Activity Name Target Completion Milestone L2 – Deliver Stage-1 Layer 1 to CERN 15-Nov-2014 15-May-2015 T1030 L2 – Deliver Stage-2 Layer 1 to CERN 10-Mar-2015 10-Sep-2015 T1040 L2 – Test operation at CERN 15-Aug-2015 15-Feb-2016 T1070 L2 – Test High-Luminosity Capability 28-Sep-2016 28-Mar-2017 T3310 L3 – Commission CTP7 for Initial Ops 15-Apr-2015 15-Jul-2015 T4000 L3 – Commission CIOX for Final Ops 04-Sep-2016 04-Dec-2016 T3320 L3 – Commission CTP7 for Final Ops 29-Sep-2016 29-Dec-2016 T4740 L4 – oSLB-oRM Optical Fibers Complete 15-Sep-2014 T4090 L4 – CIOX Software and Firmware Complete 10-Dec-2014 T4210 L4 – CIOX Production Complete 08-Jan-2015 T3710 L4 – CTP7 Production Complete T4510 L4 – CTP Infrastructure Production Complete 29-Jul-2015 T4300 L4 – CIOX Commissioning Complete 09-Sep-2015 T3980 L4 – CTP7 Test, Install and Commissioning Complete 30-Sep-2016 T3520 L4 – CTP7 Software and Firmware Complete Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Backup Slides for Q&A Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Evolution: Stage-1 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 HCAL energy ECAL energy Add to bring in finer grain EM clusters US Items: oRSCs, oSLB/oRM commissioning CTP Layer 1 Processors RCT RO+Testing CTP UK Items: MP7 Layer 2 Processors 36 mHTRs HF energy Regional Calo Trigger 2 CTP7s 9 CTP7s Layer 1 Processors oRSC oRM oSLB ECAL & HF Clusters Half-tower position RCT RO + Testing Global Calo Trigger 4x4 E+H Clusters 2x1 E+H Clusters 2-bit region ID 2 CTP7s Spare Layer 2 Calo Trigger Layer 2 Calo Trigger Heavy Ion Muon 4 MP7s Jets & Sums eGammaTau GCT fallback remains Layer 2 Processors With just a fraction of final cards or even prototypes, derive many benefits of full upgrade, incl. muon isolation Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Calorimeter Trigger Upgrade Options Two modes of connectivity required Layer 1: Pipelined: forms various cal. clusters to send to L2 nodes for different triggers TMT: distributes all cal. Info. in event to one multiplexed L2 node for all triggers Layer 2: Finds different trigger objects using clusters or scanning (TMT) all cal. info. & then demultiplexing Keep new trigger flexible to adapt to needs of evolving CMS physics program Both architectures have two processing layers Layer 1 optimized for backplane connectivity, Layer 2 for optical TMT architecture chosen as initial baseline Stage-1 must use pipelined traditional architecture Fully Pipelined Calorimeter Trigger Time Multiplexed Calorimeter Trigger US: Layer 1: CTP7 Cards UK: Layer 2: MP7 Cards Demux Layer 1 Layer 2 Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Pipelined Calorimeter Trigger (Stage-1) Each Layer 2 processor calculates suite of trigger paths (Default plan till all ECAL & HCAL TPs are available in optical format.) To GT To GT Trig Path 1 (MP7) Trig Path 2 (MP7) Trig Path 3 (MP7) Trig Path 4 (MP7) Trig Path 5 (MP7) Trig Path 6 (MP7)  Crate G Crate G Up to 12 Trigger Path Modules Each Trigger Path MP7 rcvs 48 total 1st-Level fibers @ 9.6 Gbps (2/region) Layer 1 and RCT send dedicated clusters to Layer 2 Fiber patch panel Each 1st-Level CTP7 Drives 2 fibers out to 6-12 Trigger Paths @ 9.6 Gbps Calorimeter Trigger Processor (CTP) Card oRSC () () () () CTP () () () () () () () () () CTP () () () () () Current RCT Crate A Crate C HF ECAL HBHE HF Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Pipelined Calorimeter Trigger (Stage-1) Each Layer 2 processor calculates suite of trigger paths (Default plan till all ECAL & HCAL TPs are available in optical format.) To GT To GT Trig Path 1 (MP7) Trig Path 2 (MP7) Trig Path 3 (MP7) Trig Path 4 (MP7) Trig Path 5 (MP7) Trig Path 6 (MP7)  Crate G Crate G Up to 12 Trigger Path Modules Each Trigger Path MP7 rcvs 48 total 1st-Level fibers @ 9.6 Gbps (2/region) Layer 1 sends dedicated clusters to Layer 2 Fiber patch panel 6 x 8-fiber ribbons for Lateral Network (@ 4.8 Gbps) Each 1st-Level CTP7 Drives 2 fibers out to 6-12 Trigger Paths @ 9.6 Gbps Calorimeter Trigger Processor (CTP) Card Crosspoint I/O (CIO) Card CIO-L CTP () CTP () CTP () CTP () CIO-U CIO-L CTP () CTP () CTP () CTP () CIO-U CIO-L CTP () CTP () CTP () CTP () CIO-U Current RCT Crate A Crate B Crate C ECAL HF ECAL HF ECAL HF HBHE Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Pipelined Calorimeter Trigger Upgrade Each Layer 2 processor calculates suite of trigger paths (Default plan till all ECAL & HCAL TPs are available in optical format.) To GT To GT Trig Path 1 (MP7) Trig Path 2 (MP7) Trig Path 3 (MP7) Trig Path 4 (MP7) Trig Path 5 (MP7) Trig Path 6 (MP7)  Crate G Crate G Up to 12 Trigger Path Modules Each Trigger Path MP7 rcvs 48 total 1st-Level fibers @ 9.6 Gbps (2/region) Layer 1 sends dedicated clusters to Layer 2 2x288-fiber patch panel (2x24×12-fiber optical ribbons in & out) 6 x 8-fiber ribbons for Lateral Network (@ 4.8 Gbps) Each 1st-Level CTP7 Drives 2 fibers out to 6-12 Trigger Paths @ 9.6 Gbps Calorimeter Trigger Processor (CTP) Card Crosspoint I/O (CIO) Card CIO-L CTP CTP CTP CTP CTP CTP CTP CTP CIO-U CIO-L CTP CTP CTP CTP CTP CTP CTP CTP CIO-U CIO-L CTP CTP CTP CTP CTP CTP CTP CTP CIO-U Crate A Crate B Crate C ECAL HCAL ECAL HCAL ECAL HCAL Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

TMT Calorimeter Trigger Upgrade Time-multiplexed architecture, calo data from an entire event processed by a single processor Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

e / g / t Position Resolution Significantly improved position resolution Further enhanced with optional Stage-1 Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Electron / Photon Trigger Improved control on isolation even at Stage-1 Factor of 2-3 reduction in rate with small loss in efficiency Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Tau Trigger Big improvement in efficiency with ~10X rate reduction! Current tau trigger has large and negative PU dependence Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Jet Triggers Single jet thresholds similar to current Multi-jet trigger thresholds better in upgrade (PU sub.) Small improvement in efficiency turn-on HT = S PTJets Single jet Quad jet Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Physics Performance Summary Process (x2 improvement highlighted) 1.1 x 1034 cm–2 s–1 2.2 x 1034 cm–2 s–1 Current Upgrade W(en),H(bb) 57.7% 87.0% 37.5% 71.5% W(mn),H(bb) 95.9% 100% 69.6% 97.9% VBF H(tt(mt)) 42.6% 51.3% 19.4% 48.4% VBF H(tt(et)) 24.4% 44.3% 14.0% 39.0% VBF H(tt(tt)) 17.2% 53.7% 14.9% 50.1% H(WW(eenn)) 91.4% 97.8% 74.2% 95.3% H(WW(mmnn)) 99.9% 89.3% H(WW(emnn)) 97.6% 99.4% 86.9% 99.3% H(WW(menn)) 99.6% 99.5% 90.7% 99.7% StopbWce, jets (600 – 450 GeV) 55.8% 68.2% 50.3% 64.8% StopbWcm, jets (600 – 450 GeV) 78.1% 81.6% 76.4% 84.5% RPV Stopjets (200 GeV) 70.1% 43.6% RPV Stopjets (300 GeV) 93.7% 79.7% Average Improvement: 17% (Low Lumi) & 40% (High Lumi) Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Expected performance Shown examples of improved object performance Taken in isolation these do not show we can deliver the CMS physics programme: how do triggers fit together? what about overlaps? Can we fit everything in 100 kHz limit? Develop simplified L1 trigger menus to illustrate thresholds attainable within an overall fixed rate 1.1x1034 cm-2 s-1 with 50ns BX and 50 pile-up 2.2x1034 cm-2 s-1 with 25ns BX and 50 pile-up Menus contain: Single lepton triggers Isolated single lepton triggers Dilepton triggers Lepton cross-triggers (lepton and jets or MET) Hadronic triggers Captures about 80% of the rate in 2012 L1 trigger menu Does not include calibration triggers, prescaled trigger for efficiencies etc. Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

L=1.1x1034 cm-2s-1 with 50ns BX and 50 pile-up ⎬ Single e/μ Multijet Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

L=2.2x1034 cm-2s-1 with 25ns BX and 50 pile-up ⎬ Single e/μ Multijet Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Physics studies Physics priorities: Measure all Higgs BR as precisely as possible to confirm Standard Model or not, so retaining or improving current trigger capability is critical Want to be able to answer the question of naturalness - whether or not there is new physics stabilising the Higgs mass or not SUSY remains a leading candidate, but if it is so, must have light stops Also must be able to trigger on and search for all variants (e.g. RPV with all hadronic final states) to draw a firm conclusion Consider a set of benchmark physics channels Look at the performance of these channels in 2012 analyses with and without L1 trigger upgrade at different luminosities using toy menus Benchmark the signal efficiencies in each case Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Benchmark channels considered to highlight improvements Physics performance Benchmark channels considered to highlight improvements Higgs WH: H➔bb (single lepton triggers) H ➔ ττ (new tau algorithm, single lepton triggers) H➔WW (single and dilepton triggers) SUSY Direct stop squark production (single lepton, jets and MET triggers) RPV SUSY decays (hadronic triggers e.g. multijet) Heavy Ion pT asymmetry in b jets (underlying event subtraction in jet trigger) Ratio of 3 to 2 jets (underlying event subtraction in jet trigger) Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Higgs summary Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

SUSY summary Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

⎬ ⎬ Higgs summary Single e/μ Tau ID & Single e/μ Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

SUSY summary Multijet Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger

Heavy Ion performance Readout rate is limited by data volume to 3 kHz Investigation of flavour dependence in jet quenching ➔ jet asymmetry in doubly b-tagged events Readout rate is limited by data volume to 3 kHz Need reduction to 5% of current jet trigger rate to reduce bandwidth Pile-up subtraction in upgraded trigger achieves goal Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger