Experimental Setup e- TAPS Crystal Ball  Tagged-Photon Spectrometer

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Presentation transcript:

Experimental Setup e- TAPS Crystal Ball  Tagged-Photon Spectrometer MWPC PID Target Cell A2-Collaboration Crystal Ball @ MAMI

Experimental Setup Crystal Ball TAPS 672 NaI(Tl) crystals (l=15.7 X0) truncated triangular pyramids E/E= 1.7/E0.4% =2-3o, =2o/sin PMT readout -> Level 1 trigger TAPS 510 BaF2 crystals (l=12 X0) hexagonal cross section E/E= 2.5% @ 1 GeV PMT readout -> Level 1 trigger A2-Collaboration Crystal Ball @ MAMI

Experimental Programme 2004/5 single pion photoprodcution,  meson production magnetic moment of the +(1232) via p(,'N) double pion production off the proton  PT near threshold  2nd resonance region double pion production off nuclei (12C, 16O, 40Ca, 208Pb)  A-dependence of M()  Medium effects Branching Ratios for (photoproduced)  rare decays  PT  C, CP invariance  Mass from photoproduction threshold point A2-Collaboration Crystal Ball @ MAMI

Post Upgrade Experimental Programme magnetic moment of S+11(1535) via p(,p) magnetic moment of S011(1535) via p(,n) (pilot study) p  K0+ pilot study, recoil polarisation from +  0p recoil polarimetry  Cx', Ox' Medium modification of M() (E): A(,) 0 Branching Ratios for (photoproduced)  and ' rare decays  PT  C, CP invariance pion photoprodcution circ. pol. photons and long. pol. d-target  E, neutron GDH contribution lin. pol. photons and long. pol. p-target  G  P11(1440) A2-Collaboration Crystal Ball @ MAMI

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