1. Manchester 11-13 Dec 20051 Dynamic Alignment of Roman Pots Konstantin Goulianos The Rockefeller University The Future of Forward Physics at the LHC Manchester, UK, 11-13 Dec 2005

2. Manchester 11-13 Dec 20052 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 Results PRD 50 (2004) 5518; 5535; 5550  Total cross section  tot ~ s   Elastic cross section d  /dt ~ exp[2  ’ ln s ]  shrinking forward peak  Single diffraction Breakdown of Regge factorization T rackers in Roman Pots out to |  | = 7 Alignment corrected by using elastic scattering

3. Manchester 11-13 Dec 20053 CDF-I Run-ICRun-IA,B Forward Detectors BBC 3.2<  <5.9 FCAL 2.4<  <4.2 1992-1996

4. Manchester 11-13 Dec 20054 CDF-I Roman Pot Spectrometer 3 trigger counters 3x[2X(20+20)]=240 channels Alignment performed by surveying Hosai Nakada – thesis http://hep-www.px.tsukuba.ac.jp/research/thesis_d.html Fiber width: 800 

5. Manchester 11-13 Dec 20055 CDF Run I results 93(2004)141601

6. Run-II Diffraction @ CDF CDF Forward Detectors MiniPlug calorimeters (3.5<  <5.5) Beam Shower Counters (5.5<  <7.5) Antiproton Roman Pot Spectrometer 2001-

7. Manchester 11-13 Dec 20057 Run-II Forward Detectors

8. Manchester 11-13 Dec 20058 MiniPlug Run -II Data 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 MiniPlug tower structure

9. Manchester 11-13 Dec 20059 Diffractive Dijets ND+SD & SD+MB overlap events  ~ 1 SD events Flat region

10. Manchester 11-13 Dec 200510 Run II Roman Pot Tracking

11. Manchester 11-13 Dec 200511 Calibration of RP position t=0 t=-0.5 fixed  x pbar z xx Method Adjust  x to get the steepest t distribution

12. Manchester 11-13 Dec 200512 Roman Pot Distributions edge effect

13. Manchester 11-13 Dec 200513 Determining  x from data Method: maximize the t=0 value of d  /dt

14. Manchester 11-13 Dec 200514 x and y Alignment maximize the |b|-slope  obtain x and y offsets

15. Manchester 11-13 Dec 200515 HERA &Tevatron->LHC p IP