| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8175411 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2014 | 7 Pages |
Abstract
The charged particle identification at the PANDA experiment will be mainly performed with DIRC detectors. Because of their advantageous properties the preferred photon sensors are MCP-PMTs. However, until recently these devices showed serious aging problems which resulted in a diminishing quantum efficiency (QE) of the photo cathode. By applying innovative countermeasures against the aging causes, the manufacturers recently succeeded in drastically improving the lifetime of MCP-PMTs. Especially the application of an ALD coating technique to seal the material of the micro-channels proves very powerful and results in a lifetime of â6C/cm2 integrated anode charge without a substantial QE degradation for the latest PHOTONIS XP85112. This paper will present a comparative measurement of the lifetime of several older and recent MCP-PMTs demonstrating this progress.
Related Topics
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Authors
A. Lehmann, A. Britting, W. Eyrich, F. Uhlig, R. Dzhygadlo, A. Gerhardt, K. Götzen, R. Höhler, G. Kalicy, H. Kumawat, D. Lehmann, B. Lewandowski, M. Patsyuk, K. Peters, G. Schepers, L. Schmitt, C. Schwarz, J. Schwiening, K. Suzuki,