w. smith, s. dasu. d. carlsmith, r. loveless, u. wisconsin, september 19, 2011 doe review: task t:...

W. Smith, S. Dasu. D. Carlsmith, R. Loveless, U. Wisconsin, September 19, 2011 DOE Review: Task T: CMS at LHC - 1

Task T – CMS at LHCWesley H. Smith

DOE Site Visit, Madison, WI, September 19, 2011

Subtasks:• Trigger: Regional Calorimeter Trigger, Higher Level Triggers, Trigger Coordination (W.S.)• Physics Analysis: S. Dasu & D. Carlsmith• Computing: CMS Tier-2, US CMS Production Management (Incl. talk by Dasu w/Physics)• Endcap Muon: Project Management, Chambers & Infrastructure, Alignment (Loveless)


Task T Personnel {changes}Task T Personnel {changes}•Professors: Duncan Carlsmith, Sridhara Dasu, Matt Herndon, Wesley Smith•Distinguished Scientist: Richard Loveless•Electronics Engineer: Tom Gorski (CMS project)•Associate Scientists: Pam Klabbers, Armando Lanaro, Sascha Savin

{Jim Bellinger left}•Assistant Scientist: {Monika Grothe left}•Postdocs: Maria Cepeda, Evan Friis {Jonathan Efron left}•Software Engineers: Dan Bradley, Ajit Mohapatra, Will Maier (CMS project)•System Manager: Steve Rader (50 %, 50% UW) {Matt Radtke left} -- Supports all HEP Computing

•Grad. Students: Michail Bachtis, Austin Belknap, Lindsey Gray, Jeff Klukas, Isobel Ojalvo, Ian Ross, Joshua Swanson, {Graduated: Mike Anderson, Kira Grogg, Christos Lazaridis, Jessica Leonard, Marc Weinberg}

•Grad. Summer Students:•Technician: Robert Fobes (CMS project)•PSL* Engineers: F. Feyzi, P. Robl, D. Wahl, D. Wenman, A. White (CMS project)•PSL* Draft/Tech: B. Dana, G. Gregerson, D. Grim, J. Johnson, A. Riley, T. Sailor, R. Smith (CMS project)

(*UW Physical Sciences Lab: world-class electronic & mechanical engineering & construction)

ACTIVE GROUP: over 750 Talks in CMS Meetings between Jan. ‘09 – Sept ‘11

http://www.hep.wisc.edu/cms/cms-collaboration-talks.html


Wisconsin Senior Personnel Official CMS ResponsibilitiesWisconsin Senior Personnel Official CMS Responsibilities

Prof. Wesley Smith• CMS Trigger Coordinator (07-12), CMS Trigger Project Manager (94-07) , CMS Executive Board • CMS Management Board, CMS Electronics Systems Steering Committee • SLHC Upgrade Management Board, SLHC Peer Review Board Chair• US CMS Trigger Level 2 Manager, Project Management Group• US CMS Institutional Advisory Board Member, Technical Advisory Board Member

Prof. Sridhara Dasu• CMS Electroweak Physics Co-Convener (07-09), Upgrade Physics Coordinator (10-)• Online Selection Physics Co-Convener (06-07), Computing Tier-2 Manager (Wisconsin)• SLHC Upgrade Management Board, US LHC Users Organization Secretary• US CMS Calorimeter Trigger Level 3 Manager, Institutional Advisory Board Member

Prof. Duncan Carlsmith• US CMS Endcap Muon Alignment Task Manager, Elections Committee Co-chair (07-09)

Distinguished Scientist Richard Loveless• CMS Endcap Muon Technical Coordinator (09-), CMS EMU Project Manager (07-09), • CMS Muon Upgrade Project Manager), US CMS EMU Deputy Operations Project Manager• US CMS Common Projects Manager (98-07), US CMS EMU Project Manager (02-07)

Associate Scientist Pam Klabbers• CMS Deputy Trigger Technical CoordinatorCMS Calorimeter Trigger Technical Coordinator, Regional

Calorimeter Trigger On-site Operations Manager

Associate Scientist Armando Lanaro• CMS Deputy Convener, EMU Detector Performance Group (10-11), EMU Upgrade Chamber Construction Mgr.

CMS EMU Safety Officer, US CMS Level 3 EMU On-site Operations Manager

Associate Scientist Sascha Savin• CMS Tau Physics Object Group (POG) Co-convener

Assistant Scientist Monika Grothe (Leaving Group)• CMS Conference Comm. (10-), CMS Forward Physics Convener (07-08), Electroweak Physics Data Validation


Wisconsin CMS ContributionsWisconsin CMS ContributionsEndcap Disks (EMU)• 6 disks ~3500 tons• UW Design & Contract

Chamber Installation• 400 EMU Chambers &

infrastructure• Gas, Power, Cooling &

Signal Cables

Calorimeter Trigger• 19 Crates, 2000 boards• Custom ASICs• Sorts objects w/coords

Tier-2 Computing Center

• Large UW Investment• Leverages GLOW -- Grid

Laboratory of Wisconsin

CMS Software• Collaboration with UW

Condor group to develop CMS Grid Tools


LHC & CMS operationLHC & CMS operation

As of Sept 14:• Prompt recovery from

last Technical Stop. β*=1m commissioned.

• New record inst. Lumi: 3.19x1033 cm-2s-1.

• New record in integratedluminosity delivered insingle fill (117.4 pb-1 )recorded by CMS(113.4pb-1) 96.5% efficiency.

Prospects of reaching 3.5-4x1033 cm-2s-1. • 3.15fb-1 delivered by LHC and 2.84 fb-1 recorded by CMS. • Possible to reach/exceed 5 fb-1 by end of October.


UW CMS Physics Summary(Talks by Dasu & Carlsmith)

UW CMS Physics Summary(Talks by Dasu & Carlsmith)

Analyses using 2010 dataset• Goal: Firmly establish the Standard Model EWK physics processes• Accomplishments: 9 Papers + 5 Ph.D.s

• Measure : Z (e+e–) (Leonard Ph.D.), Z(𝜏+𝜏–) (Bachtis/Swanson), Zɣ (Gray), WZ (Klukas)• Ratios of σ: Z+jets (Lazaridis Ph.D.), W+jets (Grogg Ph.D.), ɣ+jets (Anderson Ph.D.)• Early searches: SUSY SS dileptons (Weinberg Ph.D.), MSSM ϕ(𝜏+𝜏–) (Bachtis/Swanson)

Analyses using 2011 dataset• Goal : Dibosons and higgs searches• Accomplishments: Summer Conferences + Winter Publications + 3 Ph.D.s

• Diboson cross section: Zγ (Gray Ph.D.), WZ (Klukas Ph.D.), ZZ (Ross / Swanson)• Low mass SM higgs and MSSM ϕ (𝜏+𝜏–) (Bachtis Ph.D., Swanson)• High mass SM higgs (ZZ → 4 leptons) (Ross / Swanson)• Other topics: W+dijet and Z+dijet (Ojalvo)

Analyses with full 2012 data set• Goal : Definitive higgs search covering full mass range• Plans: Continue (𝜏+𝜏–, Swanson Ph.D.) and (ZZ, Ross Ph.D.), morph V+dijet to VH(bb)

Analysis after restart at 14 TeV• Goal : Thorough exploration of EWSB mechanism – higgs parameters, WW σ• Plans : Well integrated in the upgrade studies, ensure good trigger & detector

Scientists fully involved in analyses: Cepeda/Klabbers/Carlsmith/Dasu/Smith (V+jets), Friis/Savin/Dasu/Smith (𝜏+𝜏–), Lanaro/Savin/Dasu/Herndon/Smith (VV)


Task T: Computing(Talk by S. Dasu)

Task T: Computing(Talk by S. Dasu)

Task-T operates general purpose HEP and CMS specific computing• Dasu provides scientific leadership for the team• Rader supported at 50% for HEP computing

HEP Computing (Director of Computing: Rader, Desktop & Login Support)• Serve > 250 users (150 remote/guest users)• Mail, AFS storage, desktop, network, backup, printing services• 24/7 coverage for core services

CMS Tier-2, Grid Laboratory Of Wisconsin, Open Science Grid (Manager: Dasu)• Most productive Tier-2 center in all CMS (System Manager: Maier, NSF)

• 2500 Cores, >1 PB useable storage, Over 47 M CPU hours served since 2005• Seamless integration with GLOW and OSG

• Responsible for all CMS simulation production (Manager: Mohapatra, NSF)• Responsible for world-wide CMS production• More than half the production done on OSG through 2011 (Mohapatra)

• Innovative software development (Bradley)• New tools for analysis (Rapid-response Adaptive Computing Environment)• Smooth scaling of Condor farms to very large sizes, helping all grid facilities• Works within Condor team addressing concerns of FNAL (Tier-1) and Tier-2 sites

• CMS Analysis Support (Bradley, Mohapatra, Maier )• Wisconsin is primary Tier-2 for Higgs, Electroweak, Forward Physics & Trigger Studies


Task T Endcap Muon Activities(Talk by R. Loveless)

Task T Endcap Muon Activities(Talk by R. Loveless)

Project Management: Dick Loveless•Construction, test, integrate, install & commission 468 CSCs, electronics & infrastructure

Endcap Muon maintenance•UW responsibility -- led by UW scientistA. Lanaro, with PSL engineering team

ME4/2 Upgrade• Project Manager, Editor of the Muon section of the Upgrade proposal -- R. Loveless

•B904 Factory Manager – A. Lanaro•Parts procurement – led by Wisconsin

Beam Pipe Support & Shielding•Design & production of endcap shielding

Operations, Detector Performance, Alignment:• Carlsmith, Lanaro, Loveless, Gray


Task T: Trigger ITask T: Trigger ILeadership & Responsibility for Trigger Operations & Upgrades

• CMS Trigger Coordinator & US CMS Trigger L2 Manager (Smith)• CMS Deputy L1 Trigger Coordinator (Klabbers)

CMS L1 Regional Calorimeter Trigger• US CMS L3 Manager for Calorimeter Trigger (Dasu)• Operations, Hardware, On-Site Management (Klabbers)

• UW Hardware diagnostics & repair (Gorski, Fobes -- CMS Project)• CERN Maintenance & testing facilities (Klabbers, Cepeda, Savin)

• Online Diagnostics (Klabbers, Cepeda, Friis)• Downloading detailed test patterns (Friis, GS: Ross, Ojalvo )• Trigger Emulator (Cepeda, GS: Bachtis, Swanson, Belknap)

• Online Configuration & Control (Friis)• Trigger Supervisor (Friis, GS: Ross, Ojalvo)• Memory Lookup Tables (Dasu, Friis, GS: Bachtis, Swanson)• Configuration & Conditions Data Bases (Friis, GS: Swanson)

• Detector Controls System (Cepeda)• Monitor temperatures & voltages (Cepeda, GS: Ross, Ojalvo)

• Data Quality Monitoring (Savin, Cepeda)• Online Histograms & Alarms (Savin, Cepeda, GS: Swanson, Belknap)• Offline Histograms & Run Certification (Savin, Cepeda GS: Swanson, Belknap)

Klabbers

Savin

UW

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/Pos

tdo

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Cepeda

Friis


Task T: Trigger IITask T: Trigger IICMS Higher Level Triggers, Trigger

Coordination• CMS Trigger Coordinator (Smith)• UW Trigger Developers/DQM:

• Muon: Herndon, Klukas, • τ: Dasu, Bachtis, Swanson

SLHC Trigger Upgrade• US CMS L1 Trigger Manager &• Trigger Upgrade Chapter Editor (Smith)• Upgrade Physics Coordinator (Dasu)• New Algorithm Design & Simulation

• Dasu, Bachtis, Belknap, Ojalvo, Ross• Hardware design & prototyping

• Smith, Klabbers, Gorski, Fobes• Firmware Design & Architecture

• Gorski & Prof. Kati Compton (ECE),with ECE GS Tony Gregerson, Amin Farmahini-Fararhani, Dan Seemuth

UW

Trig

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Stu

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ts

Klukas

Bachtis

Swanson

Ross

BelknapOjalvo


The CMS Level-1 Trigger &Regional Calorimeter TriggerThe CMS Level-1 Trigger &

Regional Calorimeter TriggerOnly calorimeter and muon systems participate in CMS L1

e/, jets,

ET, HT, jet counts

muons

3<||<5 ||<3 ||<3 ||<2.1 0.9<||<2.4 ||<1.2

4K 1.2 Gbaud serial links Cu cables

Regional Calorimeter Trigger• Receives Trigger Primitives (TPs) from 8000 ECAL/HCAL/HF towers

• Finds 28 e/g candidates, creates 14 central tower sums, 28 quality bits, and forwards 8 HF towers and 8 HF quality bits

• All sent to Global Calorimeter Trigger at 80 MHz on SCSI cables

Input: 1 GHz interactions@ 40 MHz beam xings

Output: 100 kHz into Higher Level Triggers in Filter Farm


Regional Cal. Trigger CratesUW Scientist Pam Klabbers

Regional Cal. Trigger CratesUW Scientist Pam Klabbers

One crate with 3 custom cards to create & fan-out 160 & 120 MHz clocks, ReSync, & Bunch Crossing 0

48V DC Power

160 MHz Diff. ECL 0.4 Tbit/s Point-to-point

Dataflow

VME

Main RCT Crate

18 Operating (26 incl. Spare & Test) crates with custom backplane incorporate algos: e/g, t & Jet Triggers

Master Clock Crate (MCC):

RCTFront

RCTBack RCT

RacksInUSC55


SORTASICs(w/heat sinks)

EISO

EISO

Bar Code

Input

DC-DCConverters

Clock delay adjust

Clock Input

Oscillator

DC-DC

Adder

mezzlink

cards1026+390

BSCANASICs

PHASEASICs

MLUs

BackBar Code

Front

Regional Cal. Trigger Cards2000 Cards built by U. Wisconsin using 5 UW Custom ASICs

Regional Cal. Trigger Cards2000 Cards built by U. Wisconsin using 5 UW Custom ASICs

Receiver Card: Electron Isolation & Clock: Jet/Summary:ReceiverMezz. Card

BSCANASICs

SortASICs

BSCANASICs

PhaseASIC

128+32

128+26

18+7

18+7

(18+9CustomBackpl)

numberneeded+spares

(incl.test

setups)available

EISO

Clock

Front

Back


Trigger Lab Setup at CERNTrigger Lab Setup at CERNRepair & Test Facility – Prevessin 904•Stores boards, crates, cables.

•Power up and run system tests •Operate in water-cooled rack for extended tests

Integration tests•Racks with cooling on a raised floor nearby•Will be used for upgrade tests

Storage and Repair•Spare Crates and cards also available for use in testing and replacement of suspect cards•Soldering station, scope, and tool storage•Spare component storage

Responsible:•P. Klabbers & M. Cepeda


Detector Control System (DCS)PD M. Cepeda, GS: I. Ojalvo, I. Ross

Detector Control System (DCS)PD M. Cepeda, GS: I. Ojalvo, I. Ross

Controls and monitors rack power, current, voltage, temps, and fans:

Auto-off for cooling, voltage, current failures, sends SMS/e-mail to experts. Protects Electronics

Main Panel Histograms of Quantities Monitored

Panel for each RMC

10 Rack Monitor Cards (RMCs)


Trigger Supervisor (TS)PD: E. Friis, GS: I. Ojalvo, I. Ross

Trigger Supervisor (TS)PD: E. Friis, GS: I. Ojalvo, I. Ross

Configures and monitors RCT &interface to CMS Run Control

Can mask bad channels, monitor links and clocks, view current configuration

Masking

MonitoringConfiguration


Data Quality Monitoring (DQM)Sci: A. Savin, PD; Cepeda, GS: Swanson, Belknap

Data Quality Monitoring (DQM)Sci: A. Savin, PD; Cepeda, GS: Swanson, Belknap

Online DQM – Live and Archived

Rank and occupancy histograms

Real time data/emulator compare

Standalone DQM

Online DQM: current data to catch real-time problems (and archived)Offline DQM: post-running, used for data certification (not shown)Standalone: run by RCT on call, larger datasets possible


Trigger PerformanceTrigger Performance

Example:15 GeV L1 Single

Electron/PhotonTrigger• Use tag & probe

with Z→ee• Barrel & endcap

shown separately• Sharp threshold

curve• High Efficiency

on plateau• Calibration adjusted to equalize

barrel & endcap


Physicist Trigger M&O Tasks(all from core program)

Physicist Trigger M&O Tasks(all from core program)

Change trigger Configuration• Respond to changing beam/detector conditions & physics priorities

Study new trigger configurations• Test runs, Monte Carlo studies, data studies

Trigger Physics Analysis• Understand detailed impact of trigger on physics

Preparation for luminosity increases• Monte Carlo studies of new conditions, validate with present data

Operations - 24x7 support during running• Rapid Response to problems at point 5

• RCT is first to detect problems with ECAL, HCAL, HF• Write, test & maintain electronics test programs• Maintain & update bad channel list & run daily checking programs• Run Control maintenance• Trigger data validation and calibration

• Online & Offline analysis of rates & efficiencies• Monte Carlo & data trigger simulation maintenance

• Continuous validation of trigger using simulation & readout data

Major Challenge of rising Luminosity• Already at design capability with 5E33 lumi & 50 ns bunches• Need to study & use all the features: H/E, ECAL & HCAL Isolation• Will need to upgrade trigger system sooner


Upgrade Cal Trig. AlgorithmsDasu, Bachtis, Belknap, Ojalvo, Ross

Upgrade Cal Trig. AlgorithmsDasu, Bachtis, Belknap, Ojalvo, Ross

• Particle Cluster Finder• Applies tower thresholds to Calorimeter• Creates overlapped 2x2 clusters

• Cluster Overlap Filter• Removes overlap between clusters• Identifies local maxima• Prunes low energy clusters

• Cluster Isolation and Particle ID• Applied to local maxima• Calculates isolation deposits around 2x2,2x3

clusters• Identifies particles

• Jet reconstruction• Applied on filtered clusters• Groups clusters to jets

• Particle Sorter• Sorts particles & outputs the most energetic ones

• MET,HT,MHT Calculation• Calculates Et Sums, Missing Et from clusters

All coded in Firmware & Tested (latency/resources)

EC

AL

HCAL Δη x Δφ=0.087x0.087

e/γ

EC

AL

HCAL

τ

EC

AL

HCAL

jet

η

φ

η

φ

η

φ


Isolated Electrons

UpgradeExisting

Isolated Electrons

UpgradeExisting

Isolated Electrons

UpgradeExisting

Taus

UpgradeExisting

Taus

Cal Trig. Efficiencies & Rates(Wisconsin)

Cal Trig. Efficiencies & Rates(Wisconsin)

Current FPGA technologies allow sophisticated cluster algorithms at Lvl-1 which permit fine tuning of energy and isolation cuts.

X4 reduction in rate at 25 pileup events per crossing & improved efficiency


Cal. Trig. Position ResolutionCal. Trig. Position Resolution

UpgradeExisting

UpgradeExisting

UpgradeExisting

UpgradeExisting

Resolution for , & improve markedly

Excellent handle for reducing rate using topological triggers.

Δη: e

Δϕ: e

Δη: τ

Δϕ: τ

Average 25 pileup events per crossing


Sh

arin

g I/O

Ca

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Sh

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g I/O

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Upgrade RCT Crate (1 of 4)Upgrade RCT Crate (1 of 4)

BU

AM

C1

3

HCAL/ECAL TPGs from Lisbon oSLB & Minn. µHTR Cards

Outputs to GCT

Crate Output to DAQ

Clock/Control from TTC

(uTCA form factor, Vadatech VT892

style layout)

MC

H

PM

2P

M1

Sp

are

Slo

t

Ethernet Uplink(s)

Ca

l Trig

Pro

cesso

r

Ca

l Trig

Pro

cesso

r

Sh

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g I/O

Ca

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Sp

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Slo

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Pro

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r

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Pro

cesso

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Pro

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Pro

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Left Sharing Data to neighbor crate(X, R MTP Ribbon)

Right Sharing Data to neighbor crate(X, R MTP Ribbon)

Sh

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Ca

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Advanced TelecommunicationsComputing Architecture ATCAμTCA derived from AMC std.Advanced Mezzanine Card

Up to 12 AMC slots

Card inlayout


Calorimeter Trigger R&D(Gorski, Fobes & ECE Team)

Calorimeter Trigger R&D(Gorski, Fobes & ECE Team)

Test Setup for testing Triggering Architecture:

Uses the AUX Card Link Latency Tests Backplane Tests


Calorimeter Trigger Plan:Starting in 2013 Shutdown – Completion 2016

Calorimeter Trigger Plan:Starting in 2013 Shutdown – Completion 2016

RegionalCalorimeter

Trigger

HCAL uHTR Cards

ECAL TCCsSLHC

Cal TriggerProcessor

CardsOptic

al Ribbons

OSLBs

ORMs

TriggerPrimitiveOptical

Patch Panel(Modular – grows to meet needs)

ECAL Opti. RibbonsECAL

Indiv.

Fib

ers

(LC)

Optical Ribbons

To DAQ

Via BU“AMC13”

To DAQ

Via GCT

To DAQ

Via BU“AMC13”

To DAQ

Via ECALDCC

HCAL HTR Cards

To DAQ

ViaHCALDCC2

Existing Copper Cables

HCAL Opti. Ribbons

ECAL TCCsTo DAQ

Via ECALDCC

Existing Copper Cables

Modified ExistingNew

Parallel Operation


Higher Level TriggersHigher Level Triggers

Reduce 80 kHz L1 output to 400 Hz running algorithms averaging 40 - 60 ms/event on event filter farm.• Responsibility of Trigger Coordinator (W. Smith)• Optimize HLT & L1 triggers for any given time/luminosity

• Integration of algorithms and code provided by detector physics groups and physics object groups into the trigger code

• Creation of trigger tables via representatives from each detector group, each physics group and run coordination

• Monitoring of physics performance of the combined online selection• Muon Triggers: Prof. Herndon, GS: J. Klukas• Tau Trigs: Prof. Dasu, Assoc. Sci. Savin, GS: M. Bachtis, J. Swanson, I. Ross

• Operational Responsibilities• Study efficiency, purity, acceptance, execution time, data unpacking.

2011 Operations:• Luminosity increased from 2E32 to > 3E33 (may reach 5!)

• 5E33 w/ 50 ns bunch crossing is LHC Trigger Design!• Pileup increased from 3 events at beginning of year to 15 recently

• 7 New Major Trigger menus kept pace (one more this year for 5E33)• Presently 403 trigger paths for target rate of 300 Hz.


UW HEP ComputingUW HEP ComputingUW CMS Tier-2 amongst the most productive

• 2500 core, 2 PB system integrated with campus (GLOW, CHTC), national (OSG) and world-wide (LCG) grids using Condor technologies serving >150 users

• Over 50 K CPU hours per day; 1.5 PB user and CMS data hosted currently• Primary funding from NSF portion of CMS M&O• Additional funding: NSF grants ITR (2), MRE (2), DISUN and now PIF (2011-2014)• DOE Support: 1 month of PI (Dasu), 50% Systems Manager (Rader)• DOE support ensures desktop services and opportunistic usage by non-CMS HEP

Top of the class in simulations and analysis of all T2s

Innovative analysis solutions (Bradley and Maier)

CMS simulation operations managed by Mohapatra


UW CMS Physics SummaryUW CMS Physics SummaryAnalyses using 2010 dataset

• Goal: Firmly establish the Standard Model EWK physics processes• Accomplishments: 9 Papers + 5 Ph.D.s

• Measure : Z (e+e–) (Leonard Ph.D.), Z(𝜏+𝜏–) (Bachtis/Swanson), Zɣ (Gray), WZ (Klukas)• Ratios of σ: Z+jets (Lazaridis Ph.D.), W+jets (Grogg Ph.D.), ɣ+jets (Anderson Ph.D.)• Early searches: SUSY SS dileptons (Weinberg Ph.D.), MSSM ϕ(𝜏+𝜏–) (Bachtis/Swanson)

Analyses using 2011 dataset• Goal : Dibosons and higgs searches• Accomplishments: Summer Conferences + Winter Publications + 3 Ph.D.s

• Diboson cross section: Zγ (Gray Ph.D.), WZ (Klukas Ph.D.), ZZ (Ross / Swanson)• Low mass SM higgs and MSSM ϕ (𝜏+𝜏–) (Bachtis Ph.D., Swanson)• High mass SM higgs (ZZ → 4 leptons) (Ross / Swanson)• Other topics: W+dijet and Z+dijet (Ojalvo)

Analyses with full 2012 data set• Goal : Definitive higgs search covering full mass range• Plans: Continue (𝜏+𝜏–, Swanson Ph.D.) and (ZZ, Ross Ph.D.), morph V+dijet to VH(bb)

Analysis after restart at 14 TeV• Goal : Thorough exploration of EWSB mechanism – higgs parameters, WW σ• Plans : Well integrated in the upgrade studies, ensure good trigger & detector

Scientists fully involved in analyses: Cepeda/Klabbers/Carlsmith/Dasu/Smith (V+jets), Friis/Savin/Dasu/Smith (𝜏+𝜏–), Lanaro/Savin/Dasu/Herndon/Smith (VV)


Z Cross section : 2010 DataZ Cross section : 2010 Data

Jessica Leonard Ph.D. 2011 (Advisor : W. Smith)• Grothe, Lazaridis also contribute to EWK vector boson task force

in electron trigger and validation and W, Z measurement in 2010• New postdoc Cepeda measured W(μν) for Ph.D. from CIEMAT

J. High Energy Phys. 01 (2011) 080

Excellent agreement with NNLO cross section calculations (FEWZ)

http://dx.doi.org/10.1007/JHEP01(2011)080

http://dx.doi.org/10.1007/JHEP01(2011)080


W + Jets : 2010 DataW + Jets : 2010 Data

Kira Grogg Ph.D. 2011 (Advisor : W. Smith)• Grothe, Lazaridis, Ross and Dasu also contribute• Responsible for signal extraction, efficiency, fits and unfolding

CMS PAS EWK-10-012

Matrix elements 2 to n processes clearly needed. Tune Madgraph, Alpgen, Sherpa …

0 jets

1 jets

2 jets 3 jets


Z + Jets : 2010 DataZ + Jets : 2010 Data

Christos Lazaridis Ph.D. 2011 (Advisor : W. Smith)• Grothe, Lazaridis, Ross and Dasu also contribute• Responsible for signal extraction, efficiency, fits and unfolding

CMS PAS EWK-10-012

1 jets 2 jets

3 jets ≥4 jets

Again 2 to n procs clearly needed. Besides MEPS + also checking NLO MCs (Blackhat)


Ɣ + Jets : 2010 DataƔ + Jets : 2010 Data

Mike Anderson Ph.D. 2011 (Advisor : S. Dasu)• Followed Grogg and Lazaridis procedures but with photons• Also played a role in inclusive photon cross section publications

Phys. Rev. Lett. 106 (2011) 082001

Unpublished

Again 2 to n procs clearly needed. Lack of people hampering progress in SM physics


HPS Algorithm : 2010 Data𝝉HPS Algorithm : 2010 Data𝝉Bachtis, Swanson, Savin, Dasu

• Decay mode algorithms HPS and TaNC CMS >> Tevatron/ATLAS• Established UW HPS algorithm and analysis techniques for physics 𝝉• Also, new postdoc Friis played a role when in Davis (TaNC)

CMS PAS TAU-11-001

http://cdsweb.cern.ch/record/1337004?ln=en


Z to : 2010 Data 𝝉𝝉Z to : 2010 Data 𝝉𝝉Bachtis, Swanson, Savin, Dasu

• Measure Z to cross section and identification efficiency𝝉𝝉 𝝉• Necessary precursor to searches for higgs decays in modes𝝉• Also, new postdoc Friis played a role from Davis

CMS PAS EWK-10-013

Clean Z signals in modes enabled cross section measurement + simultaneously 𝝉extract ID efficiency. Significantly better than competition in all respects.𝝉


MSSM H to : 2010 Data 𝝉𝝉MSSM H to : 2010 Data 𝝉𝝉Bachtis, Swanson, Savin, Dasu

• Search for MSSM H to (Dasu: paper co-editor)𝝉𝝉• New postdoc Friis Ph.D. from Davis

Phys. Rev. Lett., 106 (2011) 23180

Best Limits in the world already with 36 pb–1. Presented at Moriond & prompt PRL


Update of H to : 2011 Data 𝝉𝝉Update of H to : 2011 Data 𝝉𝝉Bachtis, Swanson, Friis, Savin, Dasu

• Continue search for MSSM H to and add SM H to 𝝉𝝉 𝝉𝝉• Presented in EPS, updated for SUSY conference (Dasu: co-editor)• Much better significance than ATLAS results due to HPS + UW analysis

CMS PAS HIG-11-020

Continuing to dominate H to . Further improvements to get close to ɣɣ sensitivity! 𝝉𝝉 𝝉𝝉


ZZ to 4 leptons : 2011 Data ZZ to 4 leptons : 2011 Data Swanson, Ross, Bachtis, Savin, Dasu

• Presented in EPS 2011• Responsible for adding channels and cross section MLL fit to 4-leptons𝝉

CMS PAS EWK-11-010

ZZ cross section is the lowest pp cross section measured to date.Important SM measurement. Search for aTGCs and resonances decaying to ZZ (H)Additional drops in the bucket from addition of channels (using all lepton flavors)𝝉


H to ZZ to 2l2 : 2011 Data𝝉H to ZZ to 2l2 : 2011 Data𝝉Swanson, Ross, Bachtis, Savin, Dasu

• Presented in Lepton-Photon 2011• Primary analysis responsibility with UW (Savin paper editor)

CMS PAS HIG-10-013

Moving from 2l2 to all 4 lepton flavors, applying improved isolation, ZZ experience …𝝉


Dileptons + Jets + MET : 2010 DataDileptons + Jets + MET : 2010 Data

Marc Weinberg Ph.D. 2011 (Advisor : Smith)• Work with Savin – contribution to trigger• Independent measurement of top in OS dilepton ++ mode• Search for SUSY signature in SS dilepton ++ mode

J. High Energy Phys., 06 (2011), 77

As jets+MET excludes bulk of m0-m½ plane, SS dileptons (with ) become important …𝝉


J/psi: 2010 dataJ/psi: 2010 data

Graduate student Gray, Assoc. Sci. Lanaro and Senior Sci. Loveless have been involved in the study of low invariant mass di-muon pairs. CMS was designed to well measure muons as well as electrons.

Gray has developed a fit to extract J/Ψ polarization.

Mass spectrum of dimuon pairs in CMS

CMS PAS BPH-10-011CMS AN 11-091

J/psi mass peak and decay length

Fits to decay angular distributions

Little polarization seen in either prompt or non-prompt onia.


W/Z +gamma: 2010 dataW/Z +gamma: 2010 data

M(llgamma) vs M(ll) scatter plot showing Z+FSR signal peaking at M(ll) =M(Z).

Graduate student Lindsey Gray, Assoc. Scientist Lanaro, and Prof. Dasu used 2010 data to extract the Z(mu,mu)+gamma and set limits on anomalous triple gauge boson couplings. These results are combined with W gamma results in a publication.

Limits from Z gamma events on anomalous triple gauge boson couplings(zero in the SM).

CMS AN 10-279Phys. Letts. B701

(2011)535

Et distribution for photons in Z+gamma events.


WZ pair cross section: 2011 data

WZ pair cross section: 2011 data

Graduate student Jeff Klukas and Prof. Herndon made the first measurement of the standard model WZ pair production cross section using 1 fb-1 data from 2011 using the lll nu channels .

CMS-PAS-EXO-11-041CMS-PAS-EWK-11-010CMS AN-2011/333CMS AN-2011/259

Z(ee) and Z(mu mu) mass distributions after selections

W(e nu) and W(mu nu) Mt distributions after selections

Klukas thesis (in preparation)


Exotic WZ Resonance SearchExotic WZ Resonance Search

Graduate student Klukas is extending the WZ cross section analysis to search for new physics.

A resonance in WZ production could indicate a W’ (GUTs and extra dimension models) or a technirho (technicolor models)

Placed world-best limits on cross sections for both W’ and technirho.

Work has generated interest from theorists; currently working to extend the search range to accommodate higher-mass W’.


Wjj-dijet mass distribution:2011 data

Wjj-dijet mass distribution:2011 data

Assoc. Sci. Grothe co-convenes an effort to study the m(jj) distribution in Wjj following up an indication of a feature in CDF data.

Res. Assoc. Cepeda Hermida, Res. Assoc. Efron and Prof. Carlsmith are involved in these studies.

CDF

D0

PRELIM

INAR

PRELIM

INAR

CMSCMS

M(jj) distributions for jet pairs is association with W bosons.

DO sees no evidence for the CDF effect. LHC experiments have a much larger SM background in seeing e.g. a WZ calibration signal. Work in progress.


Zjj-dijet mass distributionZjj-dijet mass distribution

Grad. Student Ojalvo has begun studies of the dijet mass distribution in Zjj events.

These studies complement the Wjj dijet mass distribution and will form a basis for ZZ and ZH analyses.

Pt Jet1M(jj)M(ll)

M(ll)M(lljj)

Before b-tagging

After b-tagging


Physics Plans – Driven by Ph.D.sPhysics Plans – Driven by Ph.D.s

Standard Model Measurements• All students do a SM measurement in addition to searches• Complete V+Jets papers (5 fb–1)• Diboson measurements (5 fb–1)

Higgs Sector• Continue the lead set in mode 𝝉𝝉

(Bachtis 5 fb–1 and Swanson 20 fb–1 theses)• Bolster ZZ by expanding to all 4 lepton flavors

(Ross 20 fb–1 thesis)• Add VH(bb) by capitalizing on V+Jets experience

(Ojalvo 20 fb–1 thesis – 2013+)Other Searches

• Anomalous triple gauge boson couplings (Gray 5 fb–1 thesis )• Technicolor and W’ to WZ (Klukas 5 fb–1 thesis)• Same-sign dileptons including τ modes

Scientists fully involved in analyses: Cepeda/Klabbers/Carlsmith/Dasu/Smith (V+jets), Friis/Savin/Dasu/Smith (𝝉+𝝉–), Lanaro/Savin/Dasu/Herndon/Smith (VV)


Wisconsin EMU Personnel Wisconsin EMU PersonnelDick Loveless -- Distinguished Scientist

• EMU Technical Coord. (was L2 for EMU Construct. & Common Proj.) • EMU L2 Deputy Manager, US-CMS Election Committee – Co-chair• Project Manager for ME4/2 CSC Upgrade• Editor – CMS Muon Upgrade Proposal

Armando Lanaro -- Associate Scientist• EMU Field Technical Coord. – responsible for all CSC operations• EMU Safety Officer• CSC Upgrade Factory Manager

Duncan Carlsmith – Professor• Leader of Endcap Alignment task force• CSC data quality monitoring operations

(Jim Bellinger -- Assoc. Scientist)• EMU Alignment Readout & Analysis

• To Ice Cube due to funding reductions

Lindsey Gray -- Grad. Student• EMU CEO (CSC Expert Operator)

• serves weekly shifts operating EMU• Data Validation

Loveless Carlsmith

Lanaro

Gray


Endcap Muon SystemEndcap Muon System

473 Cathode Strip chambers• Typical sizes -- 1.5m x 1.8 m, 3.3m x 1.3 m• Typical weights – 200 kg to 400 kg

Large number of electronics boards• CFEB (strips) – 2268 boards• AFEB (wires) -- 11448 boards• Trigger mother board -- 473 boards• Data mother board -- 473 boards• Many others – low voltage, high voltage, monitoring etc.• Most boards have FPGAs (need programming via firmware)

• Flexibility – make changes without access• New maintenance problem (downloading firmware)


CSC MaintenanceCSC Maintenance

Mechanics & infrastructure• Wisconsin installed the mechanics of CSC system and is

responsible their operations• Maintenance on such an extensive system difficult

• Armando is Field Technical Coordinator – crucial position • Responsible for all mechanical/service parts of CSC system• Armando keeps the system operating

• PSL engineers available for consulting and design

Example – cooling leak• In Oct ‘09 a small bushing cracked and caused a leak• CMS contains over 400 such bushings• CMS decided to do an emergency opening during Xmas ‘09• Dick , Armando, and Dan led a team of 6 Polish techs to replace

all 400 bushings in a two-week period


CSC PerformanceCSC Performance

Typical Cosmic Run

• Each muon shows as a one dot in each disk • Gaps show dead chambers or boards• More than 98% of chambers are working• More than 99% of channels are working


m+m- Spectrum m+m- Spectrum

• Cleanly resolve the Upsilon peaks

• BR (h→m+m-) ~ 6 x 10-6

• ME1/1 resolution: 80m

• Other CSCs: 130-200m

• Segment recon. eff. = 97%

• Trigger primitive eff. = 97%

• Live channel eff. = 98%

CMS Muon Systems have performed extremely well


Addition of ME4/2 chambersAddition of ME4/2 chambers

Requirements for Forward Muon System• Sufficient redundancy to reduce background Bremsstrahlung, neutrons, halo muons, etc. Chamber efficiencies (gaps, dead electronics, etc.)• Good enough resolution to match Tracker tracks Multiplicity increasing faster than expected Need 4 stations of chambers as luminosity increases

ME4 chambers were descoped at the beginning of the construction project

ME4/1 chambers recovered using contingency

ME4/2 are now being constructed, install during the 2013, 2014 shutdown


CSC Upgrade ScopeCSC Upgrade Scope

Scope• Original design unfinished – ME4/2 not built• 72(67) ME4/2 chambers to complete system

• Increase redundancy of system – 3 year run without access to do repairs

• Efficient triggering at high luminosities

• New digital CFEB boards for ME1/1 (part of M&O)• Increased capacity for data rate• Ungang the ME1/1 strips – 7 CFEBs per chamber instead of 5• 72 New Datamother (DMB) boards

• Replace of 72 ME1/1 Trigger Mother Boards (M&O) • Improve triggering for h = 2.1 to 2.4


Plan for ProductionPlan for Production

Assembly in B904 factory at CERN • ~1000 m2 space with good services (power, gas, etc.)• CMS has allocated this area for the CSC production

and provided significant infrastructure

Shipped tooling from Fermilab• All items assembled and operating

Set up CSC factory during 1st half 2011• Armando Lanaro is the factory manager• CMS has allocated ~ 1-2 FTE techs to help us• Good participation by Russian, Chinese groups• Now constructing 3 prototypes


January 2011

June 2011


ME4/2 CollaborationME4/2 Collaboration

US Institutes, FNAL, PNPI, IHEP Beijing, CERN, Dubna• US built the small-η chambers, parts for other (non-ME1/1)

chambers, most of electronics• Supplying expertise, technical support, project leadership, students

• PNPI assembled and tested ME2/1, ME3/1, ME4/1 chambers• Supplying expert manpower (built CSC at LHCb and CMS) - (ME4/2

Project Engineer). Established base agreement for 3 FTE/year• IHEP (built the ME1/2 and ME1/3) is contributing to the Project by

providing technical manpower, students and physicist supervision • CERN provides host support, infrastructure, technical facilities,

coordination logistics, factory personnel• Dubna has mechanical responsibility for ME1/1 electronics update

• Important participation in ME1/1-ME4/2 coordinated effort at UXC

Most of the factory manpower is non-US, and highly experienced in building wire chambers


ME4/2 ProductionME4/2 Production

Honeycomb Panel Status• Vendor delay of ~ 6 months

Other Parts Status• All other chamber parts ordered, many delivered

Factory Status• Assembling 3 prototypes -- all tooling working fine

Schedule (revised)• Receive first panels at CERN in Apr ‘12• Manufacture 4 chambers per month• Complete 1st endcap (31 chambers) by Feb ‘13• Complete 2nd endcap (36 chambers) by end of ‘13


Winding Panels Winding Panels

• About 1000 50μm thick AuW wires are wound on the anode panel with a ~3.16mm pitch. Total wire length ~2600 m per panel. Winding time: ~4h per panel.

• 8 panels have been successfully wound• Ready to wind the 9th


Automatic SolderingAutomatic Soldering

• Automatic wire soldering is done using the Panasonic machine. It is fully operational and has been used to solder most of the 8 wound anode panels.


CSC Factory TeamCSC Factory Team


SummarySummary

EMU Status• CSC chambers operating very well• Delivering good triggers and reconstructed muons• Wisconsin team is an important ingredient

CSC Upgrade• Factory operational• Experts are trained• Procurements of parts, electronics, cables, etc.

going well • 1st Endcap finished by Feb ‘13• 2nd Endcap finished by Dec ‘13

w. smith, s. dasu. d. carlsmith, r. loveless, u. wisconsin, september 19, 2011 doe review: task t:...

Documents

cms meetings

cms tier

smith cms project

cms trigger project

task t cms

us cms emu project manager

us cms production management

white cms project psl