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LHC CMS Detector Upgrade Project 401-04-04 Calorimeter Trigger Sridhara Dasu, University of Wisconsin DOE CD1 Review 26 August 2013 Sridhara Dasu, 26 August.

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Presentation on theme: "LHC CMS Detector Upgrade Project 401-04-04 Calorimeter Trigger Sridhara Dasu, University of Wisconsin DOE CD1 Review 26 August 2013 Sridhara Dasu, 26 August."— Presentation transcript:

1 LHC CMS Detector Upgrade Project 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 1

2 LHC CMS Detector Upgrade Project Calorimeter Trigger WBS Detail Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 2 Muon Trigger M&S paid by CMS-France

3 LHC CMS Detector Upgrade Project Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 3 Calorimeter Trigger Components TypeNamePurpose TCCTrigger Concentrator CardExisting ECAL trigger primitives (TP) (France) oSLBOptical Serial Link BoardTransmit ECAL TPs to RCT & CTP (Portugal / France) HTR HCAL Trigger & DAQ BoardCreate and transmit HCAL TPs RCTRegional Calorimeter TriggerExisting trigger system oRMOptical Receiver ModulesReceive ECAL TPs on RCT (Portugal / France for Stage-1) oRSCOptical Regional Summary CardConvert & transmit RCT output (US DOE NP for Stage-1) CTPCompact Trigger ProcessorLarge FPGA w/ optical & backplane CIOXCompact IO cross-point switchIntra-crate sharing switch MP7Multipurpose ProcessorLarge FPGA w/ only optical links (UK)

4 LHC CMS Detector Upgrade Project 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 ) One optical link to optical Receiver Module (oRM) on RCT (WBS ) o Replaces copper Receiver Module One optical link to input of Upgraded Calorimeter Trigger: CTP7 Card 574 oSLBs & oRMs with Fibers installed in 2014 French Contribution to Calorimeter Trigger (no US Upgrade Funds) Presently oSLB & oRM in final prototype stage oSLB:oRM: Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 4 HCAL & ECAL Trigger Primitives OSLB Output / oRM Input: 4x 1.2 Gbps 4.8 Gbps

5 LHC CMS Detector Upgrade Project 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 = total + 8 spares + 2 test setups Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger : CTP Card Concept Virtex-7 VX690T FPGA ZYNQ XC7Z03 0 EPP 1.5V Supply 2.5V Supply 3.3V Supply 1V 30A Supply CXP Module 12Tx + 12 Rx CXP Module 12Tx + 12Rx CXP Module 12Tx + 12 Rx 12X Rx 12X Rx (CTP-6 BG View)

6 LHC CMS Detector Upgrade Project CTP: Virtex-6 Prototype Exists Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 6 Back End FPGA XC6VHX250T/ XC6VHX380T Front End FPGA XC6VHX250T/ XC6VHX380T Avago AFBR- 810B Tx Module 4X Avago AFBR-820B Rx Module MMC Circuitry JTAG/USB Console Interface Mezzanine Power Modules Dual SDRAM for dedicated DAQ and TCP/IP buffering 12x Multi Gig Backplane Connections

7 LHC CMS Detector Upgrade Project Validation of signal integrity on CTP6 Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 7 CTP-6 Intraboard link eyepattern

8 LHC CMS Detector Upgrade Project 12-links tested at 6.4 Gbps – no errors Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 8 HCAL TPG to CTP Integration Test

9 LHC CMS Detector Upgrade Project Running Linux on CTP6 FPGA – PetaLinux Startup screen via USB console Root login, pinging controller PC at 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 9

10 LHC CMS Detector Upgrade Project 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 10 Advantage of Linux System on Chip

11 LHC CMS Detector Upgrade Project 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 o 3 690Ts donated by Xilinx o 5 690Ts purchased from Xilinx o 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 11 CTP: Basis of Estimate - Hardware

12 LHC CMS Detector Upgrade Project 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 o Tom Gorski and Mathias Blake Trigger algorithm firmware work is based on prior experience managing GCT project (UK) o Wesley Smith was L1 project manager overseeing GCT Software effort is based on current RCT o Sophistication of embedded Linux / TCP and shorter timeline for implementation requires professional software effort –Jes Tikalsky o 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 12 CTP: Basis of Estimate - Effort

13 LHC CMS Detector Upgrade Project Function: For inter-board connections Input/Output: 48x Gbps Prototype exists Fully tested Firmware is minimal and exists CIOX cost well known Ready for production Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger : Crosspoint IO Card – U. Wisconsin 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) (2/crate x 3 crates = 6 + spares)

14 LHC CMS Detector Upgrade Project Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger : CTP Infrastructure: Vadatech VT894 Crate Test Setup BU AMC13 Vadatech MCH UW CTP-6 TTC Downlink UW Aux (Final system: 3 crates w/ 12 CTP7 ea. + 2 test setups + spare = 6) U. Wisconsin designed backplane with dense card interconnects manufactured & installed in commercial Vadatech VT892 Crate available in Vadatech Catalog

15 LHC CMS Detector Upgrade Project 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 15 CTP: Risk and Mitigation Strategy

16 LHC CMS Detector Upgrade Project 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 o 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 16 Calorimeter Trigger Risk Mitigation oRSC Function: Conversion to optical oRSC Input: RCT e and jet clusters 80 MHz Parallel ECL oRSC Output: 6x copies at 6.4 Gbps optical

17 LHC CMS Detector Upgrade Project 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 o Will be used for developing RCT readout validation in 2013 Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 17 oRSC Card Status

18 LHC CMS Detector Upgrade Project oRSC-CTP6 Monitoring and Validation Zero bit errors 10^-14 BER! Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 18

19 LHC CMS Detector Upgrade Project 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 o serves IPBus over TCP/IP o Forward IPBus packets over serial protocol to FPGA2 o Able to readout arbitrary memory locations from both FPGAs o Receive upgrade commands for writing FPGA configuration images and additional Linux executables to onboard flash memory Front End FPGA embedded processor running standalone app o Able to accept and decode IPBus Packets o Control or report status of all 48 fiber links o Read capture RAMs for all or selected fibers Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 19

20 LHC CMS Detector Upgrade Project CTP Readout Configuration Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 20 CTP6

21 LHC CMS Detector Upgrade Project Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 21 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

22 LHC CMS Detector Upgrade Project CTP6 / Linux Monitoring & Validation Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 22 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

23 LHC CMS Detector Upgrade Project CTP / Linux Monitoring & Validation Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 23 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

24 LHC CMS Detector Upgrade Project oRSC to MP7 Link Validation Bathtub CurveEye 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 24

25 LHC CMS Detector Upgrade Project HTR 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 25 Demonstrators & Critical Integration Tests

26 LHC CMS Detector Upgrade Project 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 : HTR 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 26 Adiabatic Upgrade Timeline

27 LHC CMS Detector Upgrade Project CT Milestones Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 27 Activity IDActivity NameTarget Completion Milestone T1020L2 – Deliver Stage-1 Layer 1 to CERN15-Nov May-2015 T1030L2 – Deliver Stage-2 Layer 1 to CERN10-Mar Sep-2015 T1040L2 – Test operation at CERN15-Aug Feb-2016 T1070L2 – Test High-Luminosity Capability28-Sep Mar-2017 T3310L3 – Commission CTP7 for Initial Ops15-Apr Jul-2015 T4000L3 – Commission CIOX for Final Ops04-Sep Dec-2016 T3320L3 – Commission CTP7 for Final Ops29-Sep Dec-2016 T4740L4 – oSLB-oRM Optical Fibers Complete15-Sep-2014 T4090L4 – CIOX Software and Firmware Complete10-Dec-2014 T4210L4 – CIOX Production Complete08-Jan-2015 T3710L4 – CTP7 Production Complete08-Jan-2015 T4510L4 – CTP Infrastructure Production Complete29-Jul-2015 T4300L4 – CIOX Commissioning Complete09-Sep-2015 T3980L4 – CTP7 Test, Install and Commissioning Complete 30-Sep-2016 T3520L4 – CTP7 Software and Firmware Complete30-Sep-2016

28 LHC CMS Detector Upgrade Project Backup Slides for Q&A Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 28

29 LHC CMS Detector Upgrade Project Evolution: Stage-1 Upgrade in 2015 Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 29 Layer 2 Calo Trigger HCAL energy Regional Calo Trigger Global Calo Trigger HF energy oRSC Layer 2 Calo Trigger oRM ECAL energy Layer 1 Processors oSLB ECAL & HF Clusters Half-tower position 4x4 E+H Clusters 2x1 E+H Clusters 2-bit region ID Layer 2 Processors Muon Jets & Sums eGammaTau Heavy Ion Spare RCT RO + Testing GCT fallback remains With just a fraction of final cards or even prototypes, derive many benefits of full upgrade, incl. muon isolation 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 US Items: oRSCs, oSLB/oRM commissioning CTP Layer 1 Processors RCT RO+Testing CTP UK Items: MP7 Layer 2 Processors 36 HTRs 2 CTP7s 9 CTP7s Add to bring in finer grain EM clusters 2 CTP7s 4 MP7s

30 LHC CMS Detector Upgrade Project 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 o Layer 1 optimized for backplane connectivity, Layer 2 for optical TMT architecture chosen as initial baseline o 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 30

31 LHC CMS Detector Upgrade Project Crate G Up to 12 Trigger Path Modules Trig Path 1 (MP7) Fiber patch panel Crate C () CTP () CTP () Trig Path 2 (MP7) Trig Path 3 (MP7) Trig Path 4 (MP7) Trig Path 5 (MP7) Trig Path 6 (MP7) ECAL Each 1 st -Level CTP7 Drives 2 fibers out to 6-12 Trigger 9.6 Gbps Each Trigger Path MP7 rcvs 48 total 1 st -Level 9.6 Gbps (2/region) To GT () Crate A Crate G Pipelined Calorimeter Trigger (Stage-1) Calorimeter Trigger Processor (CTP) Card Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 31 Each Layer 2 processor calculates suite of trigger paths Layer 1 and RCT send dedicated clusters to Layer 2 (Default plan till all ECAL & HCAL TPs are available in optical format.) HBHE Current RCT HF oRSC

32 LHC CMS Detector Upgrade Project Crate G Up to 12 Trigger Path Modules Trig Path 1 (MP7) Fiber patch panel Crate BCrate C () CTP () CTP () CTP () CTP () CTP () CTP () CTP () CTP () CIO-U CIO-L 6 x 8-fiber ribbons for Lateral Network 4.8 Gbps) Trig Path 2 (MP7) Trig Path 3 (MP7) Trig Path 4 (MP7) Trig Path 5 (MP7) Trig Path 6 (MP7) ECAL Each 1 st -Level CTP7 Drives 2 fibers out to 6-12 Trigger 9.6 Gbps Each Trigger Path MP7 rcvs 48 total 1 st -Level 9.6 Gbps (2/region) To GT () CTP () CIO-L CTP () CIO-U CIO-L CIO-U Crate A Crate G Pipelined Calorimeter Trigger (Stage-1) Calorimeter Trigger Processor (CTP) Card Crosspoint I/O (CIO) Card Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 32 Each Layer 2 processor calculates suite of trigger paths Layer 1 sends dedicated clusters to Layer 2 (Default plan till all ECAL & HCAL TPs are available in optical format.) HBHE Current RCT HF

33 LHC CMS Detector Upgrade Project Crate G Up to 12 Trigger Path Modules Trig Path 1 (MP7) 2x288-fiber patch panel (2x24×12-fiber optical ribbons in & out) Crate BCrate C CTP CIO-U CIO-L 6 x 8-fiber ribbons for Lateral Network 4.8 Gbps) Trig Path 2 (MP7) Trig Path 3 (MP7) Trig Path 4 (MP7) Trig Path 5 (MP7) Trig Path 6 (MP7) HCALECALHCALECALHCALECAL Each 1 st -Level CTP7 Drives 2 fibers out to 6-12 Trigger 9.6 Gbps Each Trigger Path MP7 rcvs 48 total 1 st -Level 9.6 Gbps (2/region) To GT CTP CIO-L CTP CIO-U CIO-L CIO-U Crate A Crate G Pipelined Calorimeter Trigger Upgrade Calorimeter Trigger Processor (CTP) Card Crosspoint I/O (CIO) Card Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 33 Each Layer 2 processor calculates suite of trigger paths Layer 1 sends dedicated clusters to Layer 2 (Default plan till all ECAL & HCAL TPs are available in optical format.)

34 LHC CMS Detector Upgrade Project TMT Calorimeter Trigger Upgrade Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 34 Time-multiplexed architecture, calo data from an entire event processed by a single processor

35 LHC CMS Detector Upgrade Project e / / Position Resolution Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 35 Significantly improved position resolution Further enhanced with optional Stage-1

36 LHC CMS Detector Upgrade Project 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 36

37 LHC CMS Detector Upgrade Project Tau Trigger Big improvement in efficiency with ~10X rate reduction! Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 37 Current tau trigger has large and negative PU dependence

38 LHC CMS Detector Upgrade Project Jet Triggers Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 38 Single jet Single jet thresholds similar to current Multi-jet trigger thresholds better in upgrade (PU sub.) Small improvement in efficiency turn-on Quad jet H T = P T Jets

39 LHC CMS Detector Upgrade Project Process (x2 improvement highlighted) 1.1 x cm –2 s –1 2.2 x cm –2 s –1 CurrentUpgradeCurrentUpgrade W(e ),H(bb) 57.7%87.0%37.5%71.5% W( ),H(bb) 95.9%100%69.6%97.9% VBF H( ) 42.6%51.3%19.4%48.4% VBF H( ) 24.4%44.3%14.0%39.0% VBF H( ) 17.2%53.7%14.9%50.1% H(WW(ee )) 91.4%97.8%74.2%95.3% H(WW( )) 99.9% 89.3%99.9% H(WW(e )) 97.6%99.4%86.9%99.3% H(WW( e )) 99.6%99.5%90.7%99.7% Stop bW e, jets (600 – 450 GeV) 55.8%68.2%50.3%64.8% Stop bW jets 600 – 450 GeV 78.1%81.6%76.4%84.5% RPV Stop jets (200 GeV)70.1%99.9%43.6%99.9% RPV Stop jets (300 GeV)93.7%99.9%79.7%99.9% Physics Performance Summary Average Improvement: 17% (Low Lumi) & 40% (High Lumi) Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 39

40 LHC CMS Detector Upgrade Project 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 1.1x10 34 cm -2 s -1 with 50ns BX and 50 pile-up 2.2x10 34 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 40 Expected performance

41 LHC CMS Detector Upgrade Project L=1.1x10 34 cm -2 s -1 with 50ns BX and 50 pile-up Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 41 Single e/μ Multijet

42 LHC CMS Detector Upgrade Project L=2.2x10 34 cm -2 s -1 with 25ns BX and 50 pile-up Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 42 Single e/μ Multijet

43 LHC CMS Detector Upgrade Project 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 o SUSY remains a leading candidate, but if it is so, must have light stops o 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 43 Physics studies

44 LHC CMS Detector Upgrade Project 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 p T 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 44 Physics performance

45 LHC CMS Detector Upgrade Project Higgs summary Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 45

46 LHC CMS Detector Upgrade Project SUSY summary Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 46

47 LHC CMS Detector Upgrade Project Higgs summary Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 47 Single e/μ Tau ID & Single e/μ

48 LHC CMS Detector Upgrade Project SUSY summary Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 48 Multijet

49 LHC CMS Detector Upgrade Project Heavy Ion performance Sridhara Dasu, 26 August 2013 DOE CD1 Review - US CMS Upgrade - Trigger 49 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 Investigation of flavour dependence in jet quenching jet asymmetry in doubly b-tagged events


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