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PA-PRO-2011-004

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Systematic studies of micro-channel plate PMTs
A. Lehmann et al. (PANDA Cherenkov Group)
albert.lehmann@physik.uni-erlangen.de
PA-PRO-2011-004.pdf (312.26 KB)
Paper
Proceedings (PRO)
Detector hardware
Friday, May 6, 2011 - 12:00
DIRC Cherenkov detectors will be the main devices for pi/K separation at the PANDA experiment at
FAIR. Due to their advantageous properties in terms of time resolution and especially inside magnetic
fields micro-channel plate photo multipliers (MCP-PMTs) are very attractive sensor candidates. In this
paper we present the investigation of several types of multi-anode MCP-PMTs. The darkcount rate, the
behavior inside a magnetic field of up to 2 T, the time resolution, the gain homogeneity and crosstalk of
multi-pixel MCP-PMTs were found to be well suitable for the PANDA requirements. Even the rate
capability of the latest models from Burle-Photonis and Hamamatsu is satisfactory. Although a big step
forward was accomplished with these recently available MCP-PMTs, the lifetime is still not sufficient for
the photon densities expected for the PANDA DIRCs.
PA-PRO-2011-004: Systematic studies of micro-channel plate PMTs

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