Presentation on theme: "DPG 2004 Köln C. Schwarz Particle Identification with the PANDA detector at GSI C.Schwarz, GSI."— Presentation transcript:
DPG 2004 Köln C. Schwarz Particle Identification with the PANDA detector at GSI C.Schwarz, GSI
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
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)
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) 10000 PMTs !
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 =0.9745 47 photons
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)
DPG 2004 Köln C. Schwarz Mechanical radiator quality Edge losses Edge thickn. Sharpness of edges should be 50 m Needs special care for handling
DPG 2004 Köln C. Schwarz Mechanical support quartz slabs embedded in honeycomb structure
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
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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