B04-1 – Trigger Upgrade Overview

LHC CMSDetectorUpgrade

Project

CD-1 Review -- B04-1: Trigger Upgrade Overview 1

B04-1 – Trigger Upgrade Overview

Wesley Smith, U. WisconsinL2 Manager, WBS 401.4August 26, 2013

Wesley Smith, 26 August 2013


ProjectL1 Upgrade TDR

Final presentation to LHCC was Tuesday June 11th

Public version of the TDR here:https://cds.cern.ch/record/1556311

Approved!

26 August 2013, Wesley Smith CD-1 Review -- P05: Trigger Upgrade 2


Project

3

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 masso SUSY remains a leading candidate, but if so, must have light stopso 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 luminositieso Based on a simplified trigger menu with a total rate < 100 kHz

Results summarized on next slideWesley Smith, 26 August 2013 CD-1 Review -- B04-1: Trigger Upgrade Overview

Upgrade Trigger Physics Performance


Project


Process(x2 improvement highlighted)

1.1 x 1034 cm–2 s–1 2.2 x 1034 cm–2 s–1

Current Upgrade 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% 99.9% 89.3% 99.9%H(WW(emnn)) 97.6% 99.4% 86.9% 99.3%H(WW(menn)) 99.6% 99.5% 90.7% 99.7%StopbWce, jets (600 – 450 GeV) 55.8% 68.2% 50.3% 64.8%StopbWcm, jets (600 – 450 GeV) 78.1% 81.6% 76.4% 84.5%RPV Stopjets (200 GeV) 70.1% 99.9% 43.6% 99.9%RPV Stopjets (300 GeV) 93.7% 99.9% 79.7% 99.9%


Physics Performance Summary(detail in subsequent talks)

Ave

rage

Impr

ovem

ent:

17%

(Low

Lum

i) &

40%

(Hig

h Lu

mi)


Project


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

o 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. pT threshold 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

o invariant mass cuts, jet-lepton matching, … Requires new high bandwidth (optical) links to Global Trigger


Goals for CSC Trig. Upgrade


Project


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)Wesley Smith, 26 August 2013

PT Assignment Algorithm Studies


Project


Muon Trigger WBS Detail

Wesley Smith, 16 July 2013 Fermilab Director's Review -- US CMS Trigger Upgrade

→Calorimeter

Trigger

M&S onOps. Prog.



Project


401.04.03 EMU Trigger UpgradeCavern Counting Room

μTCA: Advanced Mezzanine Cards fromTelecommunications Computing Architecture(commercial telecommunications hardware)


401.04.03.03MPC-EMUTFOptical Fibers*(Rice)

401.04.03.02Muon Port CardMezzanine* (Rice)

401.04.03.04Endcap MuonTrack-Finder(U. Florida)

401.04.03.05EMUTF Infrastructure(U. Florida)

401.04.03.06: Muon Sorter (Rice)

Trig

ger M

othe

rBoa

rd

Dat

a M

othe

rBoa

rd

Clo

ck&

Con

trol

Sector Processors

Clo

ck &

Con

trol

Muo

n S

orte

r

*M&S on Ops. Prog.


Project


401.04.03.02 Muon Port Card(Rice - M&S on Operations Program)


Use the existing MPC main board Backplane interface to TMB

remains unchanged

x 60 +20 spares

3 original optical links are still available

New mezzanine card with new FPGA and new links

(60 needed + 15 spares + 5 test setups = 80)

http://bonner-ntserver.rice.edu/cms/mpcs6.jpg


Project

10

401.04.03.04: EMU Track-Finder(U. Florida)

Wesley Smith, 26 August 2013 CD-1 Review -- B04-1: Trigger Upgrade Overview

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

Back: Core FPGA card with PT LUT mezzanine

Front: Optics card


Project


401.04.03.05: EMUTF Infrastructure ( U. Florida)


Not US*

*Processing the resulting tracks with RPC or CSC hits is a US responsibility

401.04.02.04Endcap MuonTrack-Finder

401.04.02.06: Muon Sorter


Project


401.04.03.06: Intermediate Sorter Upgrade (Rice)


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:


Project


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)


Goals for Cal. Trig. Upgrade


ProjectTau Trigger

Big improvement in efficiency with ~10X rate reduction!

Wesley Smith, 26 August 2013 CD-1 Review -- B04-1: Trigger Upgrade Overview 14

Current tau trigger has large and negative PU dependence


Project

Improved control on isolation Factor of 2-3 reduction in rate with small loss in efficiency


Upgrade Cal Trig: e/γ


Project


Calorimeter Trigger WBS Detail


←MuonTrigger

M&S paid byCMS-France


Project


Calo. Trigger Upgrade in Parallel: Split inputs from ECAL & HCAL

HCALEnergy(HTR)

ECALEnergy(TCC)

Regional Calo Trigger

Global Calo Trigger

EMcandidates

Regionenergies

HFEnergy(μHTR)

HCALEnergy(μHTR)

Layer 1Calo Trigger

Layer 2 Calo TriggerC

urre

nt L

1 Tr

igge

r Sys

tem

Upg

rade

L1

Trig

ger S

yste

m

oSLB

oRM

Install ECAL optical SLB & optical RM (oRM) mezzanines during LS1 Install HCAL optical splitters during Year End Technical Stop (YETS) Install HCAL backend μHTR cards for input to new trigger Install HCAL frontend electronics after LS2 (finer long. segmentation)


US

UK

US

UK

HCAL OpticalSplitters

Stage HCAL uHTR & assoc. Cal. Trigger Cards


Project


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)o 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:


HCAL & ECAL Trigger Primitives


Project


401.04.04.02: Cal. Trig. ProcessorVirtex-6 Proto. Board – U. Wisconsin

Back End FPGAXC6VHX250T/XC6VHX380T

Front End FPGAXC6VHX250T/XC6VHX380T

Avago AFBR-810B Tx Module

4X Avago AFBR-820B Rx Module

MMC Circuitry

JTAG/USB ConsoleInterface Mezzanine

Power Modules

Dual SDRAM for dedicated DAQ and TCP/IP buffering

12x Multi Gig Backplane Connections


36 total + 8 spares + 2 test setups = 46CTP6


Project


401.04.04.02: Cal. Trig. ProcessorFinal Version: Virtex-7 – U. Wisconsin

• 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

Virtex-7 VX690T FPGA

ZYNQXC7Z03

0EPP

1.5V

Su

pply

2.5V

Su

pply

3.3V

Su

pply

1V 3

0A

Supp

ly CXP Module12Tx + 12 Rx

CXP Module12Tx + 12Rx

CXP Module12Tx + 12 Rx

12XRx12XRx

(CTP-6 CAD View)


CTP7


Project


401.04.04.03: Crosspoint IO Card: crate interconnections – U. Wisconsin

Controller (MMC and link mgmt)

4X Avago AFBR-79EQDZ QSFP+ ModulePositions

4x4 Lane Bidirectional Multi Gig Backplane Connections

Backplane Rx/Tx

Redriver ICs (top and

bottom sides)


(2/crate x 3 crates = 6 + spares)


Project


401.04.04: CTP Infrastructure:Vadatech VT894 Crate Test Setup

BU

AM

C13

Vada

tech

M

CH U

W C

TP-6

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 interconnectsmanufactured & installed in commercial Vadatech VT892 Crate available in Vadatech Catalog


Project


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 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 notavailable in 2015


Calorimeter Trigger Risk Mitigation


Project

CD-1 Review -- B04-1: Trigger Upgrade Overview

Cal. Trig. Partial Upgrade in 2015

Wesley Smith, 26 August 2013 24

Layer 2 Calo Trigger

HCALenergy

Regional Calo Trigger

Global Calo Trigger

HFenergy

oRSC

Layer 2Calo Trigger

oRM

ECALenergy

Layer 1 Processors

oSLB ECAL & HF ClustersHalf-tower position

4x4 E+H Clusters2x1 E+H Clusters

2-bit region ID

Layer 2 Processors

MuonJets & Sums

eGammaTau

Heavy IonSpare

RCT RO + Testing

GCT fallback and Minimal Stage-1 fallback remains

available

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 mHTRs

2 CTP7s 9 CTP7s

Add to bring in finer grain EM clusters

2 CTP7s

4 MP7s


Project


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:


Trigger Staging


Project


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


Summary


Project


Additional Slides



ProjectCalorimeter Trigger Components


Type Name Purpose

TCC Trigger Concentrator Card Existing ECAL trigger primitives (TP) (Paid by FR)

oSLB Optical Serial Link Board Transmit ECAL TPs to RCT & CTP (Paid by PT)

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(Paid by FR)

oRSC Optical Regional Summary Card Convert and transmit RCT output(paid by DOE Nuclear)

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)


Project

29CD-1 Review -- B04-1: Trigger Upgrade Overview

Schedule/Milestones – Level 3


Targeting completion of milestones 3 months earlier


Project


Schedule/Milestones – Level 4



Project


Critical path follows second phase of module production driven by funding profile


Schedule – Critical Path

Documents

B04-1 – Trigger Upgrade Overview