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DPG 2004 Köln C. Schwarz Particle Identification with the PANDA detector at GSI C.Schwarz, GSI.

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Presentation on theme: "DPG 2004 Köln C. Schwarz Particle Identification with the PANDA detector at GSI C.Schwarz, GSI."— Presentation transcript:

1 DPG 2004 Köln C. Schwarz Particle Identification with the PANDA detector at GSI C.Schwarz, GSI

2 DPG 2004 Köln C. Schwarz Charged particle identification with PANDA How to perform PID within a magnetic field in front of an EMC as compact as possible (material, costs) DIRC For p~GeV: SiO 2 (n=1.47) Aerogel, C 6 F 14 (n=1.02, 1.24) target B

3 DPG 2004 Köln C. Schwarz Ring Imaging Cherenkov Detectors RICH RICH DIRC Detecting Internally Reflected Cherenkov light PID: tracking  p, RICH    m pin point focus (camera obscura)

4 DPG 2004 Köln C. Schwarz DIRC less space than aerogels costs of calorimeter no problems with field Detecting Internally Reflected Č-light (exsting at BaBar) PMTs !

5 DPG 2004 Köln C. Schwarz DIRC K eff.  miss-id. reaction pp   at  s = 3.6 GeV/c 2 degree K eff.  miss-id. reaction pp   at  s = 3.6 GeV/c 2 degree  2 /n=2.4 pion  = photons

6 DPG 2004 Köln C. Schwarz DIRC Time Of Propagation  T, T2 T1 (discussed at Belle)  reduced # of PMT for Kaon PID  very good time resolution required (~ 100 ps)

7 DPG 2004 Köln C. Schwarz Mechanical radiator quality Edge losses Edge thickn. Sharpness of edges should be  50  m Needs special care for handling

8 DPG 2004 Köln C. Schwarz Mechanical support quartz slabs embedded in honeycomb structure

9 DPG 2004 Köln C. Schwarz Photon detector candidate: PMT-MCP Photocathode pixelized photoanode MCP glass tube works up to 2.2 Tesla amplification up to 10 7 Anashin et al. NIMA 504 (2003) 276

10 DPG 2004 Köln C. Schwarz Summary ● DIRC allows for compact PID ● Simulations show good  /K separation ● Timing information might help to reduce number of PMT ● A possible photon detector is PMT-MCP


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