Advances in Particle Physics

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Advances in Particle Physics
2004 Nobel Prize!
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The Physics Frontier

• Fundamental discoveries in particle physics
  remain in the forefront of science
• Where is the next new place where these may be
  found?
• The Large Hadron Collider at CERN at 14 TeV
  center of mass energythe new frontier

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Physics at LHC

• Extra dimensions
• Composite quarks leptons
• .?

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LHC Collisions
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CMS Detector
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Wisconsin on CMS at LHC

• Personnel
• Professors D. Carlsmith, S. Dasu, D. Reeder, W.
  Smith
• Senior Scientist R. Loveless
• Senior Electronics Engineer T. Gorski
• Assistant Scientists P. Chumney, M. Grothe, A.
  Lanaro
• Postdoc Y. Baek
• Engineer M. Jaworski, Technician R. Fobes
• Grad Students V. Puttabuddhi (Engineering), C.
  Hogg (Physics)
• PSL Engineers F. Feyzi, J. Hoffman, P. Robl, D.
  Wahl, D. Wenman
• PSL Draft/Tech G. Gregerson, D. Grim, J. Pippin,
  R. Smith
• Activities
• Calorimeter Trigger (W. Smith, CMS Trigger
  Project Manager)
• Endcap Muon System (R. Loveless, CMS Endcap Muon
  Manager)
• Computing/Physics (S. Dasu, US CMS Computing Adv.
  Bd, Chair)

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Trigger DAQ at the LHC
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CMS Trigger DAQ Systems

• Level-1 Trigger Requirements
• Input 109 events/sec at 40 MHz at full L 1034
• Output 100 kHz (50 kHz for initial running)
• Latency 3 ?sec for collection, decision,
  propagation
• Output direct to computer filter farm (no
  physical level-2)

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CMS Level-1 TriggerW. Smith, Project Manager
Calorimeters
Muon Detectors

• Wisconsinfullyresponsible
• US CMS Trigger
• US CMSfully responsible
• US CMS partially responsible
• UNIQUEAll system present trigger objects
  w/location, ET, quality -- topological triggers
  possible

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Calorimeter Trigger Crate

• One of 18 160 MHz systems processing 0.4 Tbits/s.

Rear Receiver Cards
Front Electron, Jet, Clock Cards
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Calorimeter Trigger Receiver Mezzanine Card (RMC)
and Receiver Card (RC)

• Receives 64 Calorimeter energy sums every 25 ns
  using 8 Vitesse 1.2 Gbaud links on Receiver
  Mezzanine link Cards, sends to Jet/Summary Card

Front
Adder
mezz link cards
Techn. R. Fobes (l.) Engr. T. Gorski (r.)
test links
DC-DC
Back
Bar Code
PHASE ASICs
BSCAN ASICs
MLUs
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Work on Calorimeter Trigger

• Wisconsin scientists along with students are
  involved in
• Testing electronics cards
• Writing real-time control and diagnostic
  software
• Writing detailed hardware emulation
• Physicssimulationof triggersignals
• Left
• Jet SummaryCard backand frontsidesshowingcust
  omhigh-speedWisconsinASICs

Asst. ScientistsP. Chumney (l.) and M. Grothe
(r.) test JSC
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UW built the endcap disks
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UW installs the chambers
L to R F. Feyzi, D. Wenman, A. Lanaro J.
Johnson, M. Giardoni, Regis, Y. Baek
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UW CMS Physics Activities

• Wide-ranging physics interest and expertise in
  the group
• Analysis efforts coming to forefront as detector
  work finishes
• Ensure trigger systems operate at full
  performance at turn-on
• We studied simulated Higgs, SUSY, SM EW and QCD
  datasets
• Designed trigger systems that capture all the
  important physics efficiently while satisfying
  DAQ bandwidth requirements
• Design triggers for physics channels that are new
  to CMS
• Diffractive Higgs (H?bb), Vector boson fusion
  Higgs (H?bb)
• Full simulation and analysis for low mass Higgs
• Above channels and other VBF, H?tt, H?WW
• LHC Physics Center (LPC at FNAL)
• Dasu is on advisory board and is co-head of
  trigger group
• Updating trigger emulation and developing trigger
  validation tools
• Accumulate large physics samples ? our computing
  effort

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UW CMS Computing the GRID

• All U.S. CMS SC Institutions are involved in DOE
  and NSF Grid Projects
• Integrating Grid softwareinto CMS systems
• Bringing CMS Productionon the Grid
• Understanding the operational issues
• CMS benefits from Grid Funding
• Deliverables of Grid Projects become useful for
  LHC in the real world

From Lothar Bauerdick, US CMS SC L1 Manager, FNAL
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UW Computing on CMS

• UW is leading single CMS institution in each of
  past 3 years
• Access to 500 CPUs on average
• Physics (100), GLOW - 6 sites (360 - soon 750),
  CS (700)
• Dedicated storage and high-throughput network
• 10 TB storage _at_ physics
• Soon 100 TB on GLOW
• 1 Gbps campus backbone622 Mbps to WAN
• First use of core grid technology
• Condor guts of grid
• UW Computer Science Collaboration
• Prof. M. Livny, UW ComputingScience Dept., group
  leader

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Particle Physics Summary
Lots of opportunity
Good Physics
Good Travel
Communication skills
Good friends
Good jobs
fun and a rewarding education