Bochum 2009 – scientific programme

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HK: Fachverband Hadronen und Kerne

HK 75: Accelerators and Instrumentation I

HK 75.8: Talk

Thursday, March 19, 2009, 18:30–18:45, H-ZO 80

Measurements of Photon Response and Light Yield Homogeneity with PbWO4 Crystals for PANDA — •Sophie Grape — Uppsala University

The dynamic range for the crystals of the PANDA calorimeter is foreseen to span from 10 MeV to 15 GeV in order to make reconstruction of channels with both low and high energy photons possible. The synchrotron facility MAX-Lab in Lund, Sweden, provides a unique opportunity to measure response function of crystals at energies in the low energy regime. The photon energy resolution for an array of PbWO4 crystals has been measured in the range of 10 MeV to 100 MeV.

Another important feature is the homogeneity of the light yield response along the crystals. Results from these energy resolution and homogeneity measurements will be reported.