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HERA and the LHC

HERA and the LHC. Alignment of CDF Roman Pots. K. Goulianos The Rockefeller University CERN 17-19 January 2005 (talk delivered by video). Thanks!. Many thanks to Michele Gallinaro. Run-I,0 (1988-89). Elastic, single diffractive, and total cross sections @ 546 and 1800 GeV.

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HERA and the LHC

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  1. HERA and the LHC Alignment of CDF Roman Pots K. Goulianos The Rockefeller University CERN 17-19 January 2005 (talk delivered by video) Alignment of CDF Run II Roman Pots K. Goulianos

  2. Thanks! Many thanks to Michele Gallinaro Alignment of CDF Run II Roman Pots K. Goulianos

  3. Run-I,0 (1988-89) Elastic, single diffractive, and total cross sections @ 546 and 1800 GeV Roman Pot Spectrometers • Roman Pot Detectors • Scintillation trigger counters • Wire chamber • Double-sided silicon strip detector Additional Detectors Trackers up to |h| = 7 • Results PRD 50 (2004) 5518; 5535; 5550 • Total cross section stot ~ se • Elastic cross section ds/dt ~ exp[2a’ lns]  shrinking forward peak • Single diffraction Breakdown of Regge factorization Alignment of CDF Run II Roman Pots K. Goulianos

  4. Run-IC Run-IA,B Forward Detectors BBC 3.2<h<5.9 FCAL 2.4<h<4.2 CDF-I 1992-1996 Alignment of CDF Run II Roman Pots K. Goulianos

  5. CDF-I Roman Pot Spectrometer Hosai Nakada – thesis http://hep-www.px.tsukuba.ac.jp/research/thesis_d.html Fiber width: 800 m • 3 trigger counters • 3x[2X(20+20)]=240 channels Alignment of CDF Run II Roman Pots K. Goulianos

  6. CDF Run I results 93(2004)141601 Alignment of CDF Run II Roman Pots K. Goulianos

  7. Run-II Diffraction @ CDF 2001- CDF Forward Detectors • MiniPlug calorimeters (3.5<h<5.5) • Beam Shower Counters (5.5<h<7.5) • Antiproton Roman Pot Spectrometer CDF Internal Review

  8. Run-II Forward Detectors M. Gallinaro @ http://arxiv.org/abs/hep-ph/0407255 Alignment of CDF Run II Roman Pots K. Goulianos

  9. MiniPlug Run -II Data MiniPlug tower structure • ADC counts in MiniPlug towers • in a pbar-p event at 1960 GeV. • “jet” indicates an energy cluster • and may be just a hadron. • Approximately 1000 counts = 1 GeV Multiplicity distribution in SD and ND events Alignment of CDF Run II Roman Pots K. Goulianos

  10. ND+SD & SD+MB overlap events x ~ 1 SD events Flat region Diffractive Dijets Alignment of CDF Run II Roman Pots K. Goulianos

  11. Run II Roman Pot Tracking Alignment of CDF Run II Roman Pots K. Goulianos

  12. Calibration of RP position Method Adjust Dx to get the steepest t distribution fixed x t=-0.5 t=0 t=-0.5 z pbar Dx x Alignment of CDF Run II Roman Pots K. Goulianos

  13. Roman Pot Distributions edge effect Alignment of CDF Run II Roman Pots K. Goulianos

  14. Determining Dx from data Method: maximize the t=0 value of ds/dt Alignment of CDF Run II Roman Pots K. Goulianos

  15. IP p ! Diffraction Soft & Hard HERA &Tevatron->LHC Alignment of CDF Run II Roman Pots K. Goulianos

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