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Advances in Particle Physics

Advances in Particle Physics. 2004 Nobel Prize!. 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 energy…the new frontier.

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Advances in Particle Physics

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  1. Advances in Particle Physics 2004 Nobel Prize!

  2. 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 energy…the new frontier

  3. Physics at LHC • Extra dimensions • Composite quarks & leptons • …….?

  4. LHC Collisions

  5. CMS Detector

  6. 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)

  7. Trigger & DAQ at the LHC

  8. Detector Frontend Level-1 Trigger Readout Systems Event Run Builder Networks Manager Control Filter Systems Computing Services 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)

  9. CMS Level-1 TriggerW. Smith, Project Manager Calorimeters Muon Detectors • Wisconsinfullyresponsible • US CMS Trigger • US CMSfully responsible • US CMS partially responsible • UNIQUE:All system present trigger objects w/location, ET,quality -- topological triggers possible

  10. Calorimeter Trigger Crate • One of 18 160 MHz systems processing 0.4 Tbits/s. Rear: Receiver Cards Front: Electron, Jet, Clock Cards

  11. 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 Tech’n. R. Fobes (l.) & Eng’r. T. Gorski (r.) test links: DC-DC Back Bar Code PHASE ASICs BSCAN ASICs MLUs

  12. Receiver Mezz. Card Phase ASIC BSCAN ASICs BSCAN ASICs Sort ASICs 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 frontsidesshowingcustomhigh-speedWisconsinASICs Asst. ScientistsP. Chumney (l.) and M. Grothe (r.) test JSC:

  13. UW built the endcap disks

  14. UW installs the chambers L to R: F. Feyzi, D. Wenman, A. Lanaro J. Johnson, M. Giardoni, “Regis”, Y. Baek

  15. 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

  16. UW CMS Computing & the GRID • All U.S. CMS S&C 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 S&C L1 Manager, FNAL

  17. 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 @ 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

  18. Welcome to the adventure! Particle Physics Summary Lots of opportunity Good Physics & Good Travel & Communication skills & Good friends & Good jobs …fun and a rewarding education

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