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HEP Experiment at Penn

HEP Experiment at Penn. Joseph Kroll for the Penn High Energy Group. Enquiring Minds Want to Know. What are the fundamental Constituents of matter?. What are the forces (interactions) that govern their behavior?. Overview of Penn HEP. Current Experiments:

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HEP Experiment at Penn

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  1. HEP Experiment at Penn Joseph Kroll for the Penn High Energy Group

  2. Enquiring Minds Want to Know What are the fundamental Constituents of matter? What are the forces (interactions) that govern their behavior?

  3. Overview of Penn HEP • Current Experiments: • Sudbury Neutrino Observatory (SNO) • Collider Detector at Fermilab (CDF) • BaBar detector at SLAC • ATLAS detector at CERN LHC

  4. Distinguishing Features World class electronics capabilities Instrumentation specialists: Newcomer, Van Berg Advanced computing techniques and data acquisition Experienced well-established groups CDF since 1984 Babar since 1995 ATLAS since 1995 Long history in neutrino astrophysics (theory Langacker) (Kamiokande from 1984 to 1990 SNO since 1988

  5. Sudbury Neutrino Observatory Faculty: Beier Staff: Heintzelman, Van Berg Postdocs: McCauley, Oser, Future hire Grad students: Dunford, Kyba, Rusu

  6. Neutrino Physics at SNO Solve solar neutrino problem Demonstrate neutrinos oscillate Understand why/how Neutrinos change flavor Test astrophysics of sun

  7. Past Thesis Topics Doug McDonald Studies of the Sudbury Neutrino Observatory Detector and Sonoluminescence using a Sonoluminescent Source (1999) Peter Wittich First Measurement of the Flux of Solar Neutrinos from the Sun at the Sudbury Neutrino Observatory (2000) Now a postdoc with Penn on CDF Mark Neubauer Evidence for Electron Neutrino Flavor Change Through Measurement of the 8B Solar Neutrino Flux at the Sudbury Neutrino Detector (2001) Now a postdoc with MIT on CDF

  8. Present Thesis Topics Vadim Rusu (4th year) Model-Independent Measurement of the Neutral Current Flux from Salt Data at SNO (anticipated 2003) Accepted Fermi Fellow at University of Chicago Chris Kyba (3rd year) Measurement of Atmospheric Neutrino Interactions at SNO Monica Dunford (2nd year) Measurement of the Neutral Current Flux from SNO’s Neutral Current Detectors

  9. Future Thesis Topics Limits/Detection of Matter Effects of Neutrinos In the Earth Through Day-Night Effects Measurement of the Solar Neutrino Energy Spectrum at SNO World’s Best Measurement of the Solar Neutrino Mixing Angle from SNO’s Neutral Current Detectors Search for Violations of Baryon Number in Neutron-Antineutron Oscillations Limits on Anti-neutrino Appearance in the Solar Neutrino Flux

  10. SNO Hardware Opportunities Penn maintains all SNO electronics Opportunities to Design new electronics: Rusu: GPS clock board Dunford: crate backplane Work in an active Nickel Mine!

  11. SNO: Makes you Famous!

  12. CDF At the energy frontier at the Fermilab Tevatron (p-antip) CDF rolls in to collision hall – Winter 2001 Installation of Silicon Tracking Device (L00, SVX, ISL) – Fall 2000

  13. CDF Personnel Faculty: Kroll, Lockyer, Williams Staff: Heinrich, Kononenko Postdocs: Ambrose, Jones, Nakamura, Oldeman, Wittich Graduate Students: Chen, Hahn, Kovalev, Usynin, Yu

  14. CDF Hardware Opportunities Penn made major contributions to three parts CDF II: Central Outer Tracker electronics Time of flight Central calorimeter calibration electronics These systems need to be maintained Particle identification (important for heavy flavor and exotics) Involves analysis of data from existing systems Major opportunity to improve dE/dx and TOF particle id Level II trigger upgrade Hardware, firmware (FPGA), software Design and prototyping phase

  15. CDF Grad Student Contributions Chunhui Chen: TOF proposal and electronics Thesis: Measurement of the Direct Charm Production Cross-section (defended 3/28/03) Kristian Hahn: COT electronics, Level II trigger upgrade Data analysis: top dileptons Andrew Kovalev: Calorimeter calibration electronics Thesis: Search for new physics in dileptons with missing energy Denys Usynin: TOF electronics Data analysis: heavy flavor physics, flavor identification in lepton data sample Eiko Yu: COT electronics, dE/dx for particle identification Thesis topic: b baryon decays Lb

  16. CDF Successful Thesis Defense

  17. CDF Physics Physics divides into five physics groups: 1. QCD 2. Electroweak 3. Top quark physics 4. Heavy Flavors (charm and bottom) 5. Exotics (search for physics beyond SM) Penn group focused on top, heavy flavors, and exotics Data are rolling in (finally) – lots of thesis topics

  18. Flavor Physics at Our goal is to explore CP-violation through the observation and measurement of asymmetries and rare decays of B0 mesons using the PEP-II asymmetric collider and the BABAR detector

  19. Personnel at Penn Faculty: L. Gladney, (A. Ryd) Post-Docs: P. Behera and J. Panetta Graduate Student: Q. Guo

  20. PEP-II has delivered 115 fb-1of data BABAR has recorded 99.4 fb-1of this By June of 2003, we expect to collect at least another 25 fb-1 Goal for late 2005 is 500 fb-1 collected. Unprecedented in HEP. Tons of data for theses!

  21. Measurement of sin2b=0.741 0.067 0.034 hcp=-1 hcp=+1 sin2b = 0.755  0.074 sin2b = 0.723  0.158 PRL 89(2002) 201802

  22. What’s Left To Do? • The Standard Model has a single source for CP-violation (CPV) and makes quantitative predictions • New symmetries in nature can provide new sources of flavor and CPV with significant deviations from Standard Model predictions *Generic extra dimensions with SM in bulk * Minimal Supersymmetric Standard Model * Supersoft SUSY breaking with Dirac gauginos * etc. • Searches for new physics will likely focus on loop corrections in the theory – this is where Penn will focus in the next three years γ b  s sum of exclusive channels, photon polarization search for very rare decay modes

  23. ATLAS Experiment at CERN The future energy frontier in accelerator physics

  24. ATLAS Installation Most of the surface building will be handed over to ATLAS this year (Oct-Nov 2002) Underground civil engineering will end in Spring 2003 ATLAS will start installation at Point-1 in April 2003

  25. Excavation ended in May 2002

  26. PENN ATLAS TRT Electronics Faculty: Williams, (Ryd) Staff: Alexander, Dressnandt, Keener, Kononenko, Newcomer, Scherzer, Van Berg Postdocs: Munar, Rohne Visitors: Ryjov, Szczgiel

  27. End Cap Module (1 of 72 total)

  28. End of Barrel Module You will see this on the tour this afternoon

  29. Electronics at End of Barrel Again, you will see this on the tour 425K Channels required Excellent opportunity to Get experience with electronics Design, fabrication, testing

  30. ATLAS Physics Schedule: Start detector installation: 2004 Detector commissioning: 2006 Data taking for theses: 2008 Physics at the energy frontier: EWK symmetry breaking Higgs Boson, SUSY This incoming class is the first That can consider ATLAS for thesis research

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