| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1829177 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2008 | 4 Pages |
Abstract
Microchannel plate (MCP) photomultipliers (PMTs) are attractive photon sensors for the PANDA DIRC. The gain and the time resolution of different types of MCP-PMTs were studied as a function of the magnetic field and of the field orientation. It was found that for an efficient single photon detection a pore diameter of 10μm or less will be needed in the 2 T magnetic field of PANDA. Both gain and time resolution are best with a pore size of 6μm. In contrast to the gain the time resolution shows only a weak dependence on the magnetic field and its orientation. The best transit time resolution for single photons was evaluated to be σ≈20ps with no magnetic field applied.
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Authors
A. Lehmann, A. Britting, W. Eyrich, C. Pizzolotto, A. Teufel, M. Düren, K. Föhl, M. Hoek, S. Lu, G. Schepers, B. Seitz, C. Sfienti,