1 / 21

RICH detector for CLASS12 E.Cisbani INFN-Rome and ISS CLASS12-RICH Working Group Meeting

RICH detector for CLASS12 E.Cisbani INFN-Rome and ISS CLASS12-RICH Working Group Meeting 07 August 2008. Hadron PID in Class12 Baseline. p /K PID rely on LTCC performance in 3-5 GeV/c (No K/p PID in 5-8 GeV/c).  RICH. Which RICH?. Liquid Radiator (Freon) Cover up to 5 GeV/c

odetta
Download Presentation

RICH detector for CLASS12 E.Cisbani INFN-Rome and ISS CLASS12-RICH Working Group Meeting

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. RICH detector for CLASS12 E.Cisbani INFN-Rome and ISS CLASS12-RICH Working Group Meeting 07 August 2008 E. Cisbani / Class12-RICH

  2. Hadron PID in Class12 Baseline • p/K PID rely on LTCC performance in 3-5 GeV/c • (No K/p PID in 5-8 GeV/c)  RICH E. Cisbani / Class12-RICH

  3. Which RICH? • Liquid Radiator (Freon) • Cover up to 5 GeV/c • Relatively inexpensive (proximity focusing RICH) • Aerogel + Gas Radiators • Cover up to 12 GeV/c • Very expensive Cost: Aerogel RICH ~ 5 x Proximity Focusing RICH E. Cisbani / Class12-RICH

  4. Location of the RICH ? • Replace part of LTCC: • No impact on baseline design • Nobody will probably complain • Large space available (and to be covered!) • Add to HTCC: • Impact on baseline design • somebody will probably complain E. Cisbani / Class12-RICH

  5. LTCC Sector About 6.2 m2 entrance window 1 m depth E. Cisbani / Class12-RICH

  6. Proximity Focusing RICH E. Cisbani / Class12-RICH

  7. Proximity RICH Performance 1/2 Gap:600 mm Freon Thick: 20-30 mm (?)  Resolution: 1.5-1.8 mrad Channels: 70 k (Assume full detection acceptance) E. Cisbani / Class12-RICH

  8. Proximity RICH: Performance 2/2 2 cm radiator: p/K separation up to 4.2 GeV/c with superior rejection (1:1000) and high K efficiency (93%) with 3 cm radiator: same performance up to 4.7 GeV/c E. Cisbani / Class12-RICH

  9. Proximity RICH in LTCC • The RICH replaces 2 adjacent sectors of LHCC Two radiators One photon detector Entrance window ~ 12 m2 Detection area ~ 16 m2 Readout Chs ~ 80000 E. Cisbani / Class12-RICH

  10. HallA Proximity RICH Now in EEL/122 Will be used in the Transversity experiment next October E. Cisbani / Class12-RICH

  11. Quarz planarity e parallelism 0.1 mm E. Cisbani / Class12-RICH

  12. Evaporation Fac. & QE Meas. CsI is evaporated on the pad panel in the evaporation chamber: 120h x 110r cm2 (vacuum 10-7 mbar) E. Cisbani / Class12-RICH

  13. Recent CsI Evaporation (July08) E. Cisbani / Class12-RICH

  14. Hall A RICH in Hypernuclear Exp. (2003-2005)  K/p rejection ~ 1/1000 F. Garibaldi et al. NIM A502 (2003) E. Cisbani / Class12-RICH

  15. Photon Detector • Replace MWPC with GEM Chamber • faster, • higher gain, • stability at high rate HBD @ Phenix E. Cisbani / Class12-RICH

  16. Costs (!very preliminary!) Class12/Halla Radiator 36-48 (min.-max. volume), 24 (surface) Detector 13 (surface), 4 (chs) GEM ~ 1.2 x MWPC k$ (estimation from Lire, CHF, $ and Euro) E. Cisbani / Class12-RICH

  17. Valery Kubarovsky Aerogel in HTCC • Main Issues: • Aerogel add 2-3% X0 • Online trigger may be challenging • HTCC design shall be revised • Impact on tracking ? • Cost probably higher than LTCC option (but full acceptance) E. Cisbani / Class12-RICH

  18. Aerogel RICH: successful in HERMES One HERMES RICH detector soon at U.Va. • Pixel 2.3 • Mirror0.6 • Point emiss.0.7 • n disp. 0.5 • Chromatic 1.3 • Forw.Scatt. 0.4 • Surface 0.4 • Total (calc.)/pe 2.9 • Total (exp.)/pe 3.3 • Npe (exp.) 10 E. Cisbani / Class12-RICH

  19. t 1996 2004 ’80s Aerogel RICH / expected to be better in future Aerogel improvements Matsushita 100x100x20mm3 n=1.050 Aerogel cost ~ 4 $/cm3 … and smaller pixel size Dalla Torre / RICH04 E. Cisbani / Class12-RICH

  20. Conclusion? • Proximity RICH in 2 LTCC sectors should provide: p/K rejection better than • 1:1000 up to 4.2 GeV/c (worst case) • 1:1000 up to 4.7 GeV/c (best case) • 1:100 up to 5 GeV/c (K efficiency > 90%) • Costs about $ 2.5M • Aerogel option should be investigated further E. Cisbani / Class12-RICH

  21. E. Cisbani / Class12-RICH

More Related