Lehmann, A. et al. (2014) Improved lifetime of microchannel-plate PMTs. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 766, pp. 138-144. (doi: 10.1016/j.nima.2014.04.005)
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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 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.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Hoek, Mr Matthias and Montgomery, Dr Rachel and Cowie, Dr Euan and Rosner, Professor Guenther |
| Authors: | Lehmann, A., Britting, A., Eyrich, W., Uhlig, F., Dzhygadlo, R., Gerhardt, A., Götzen, K., Höhler, R., Kalicy, G., Kumawat, H., Lehmann, D., Lewandowski, B., Patsyuk, M., Peters, K., Schepers, G., Schmitt, L., Schwarz, C., Schwiening, J., Traxler, M., Zühlsdorf, M., Dodokhov, V.K., Düren, M., Föhl, K., Hayrapetyan, A., Kröck, B., Merle, O., Rieke, J., Cowie, E., Keri, T., Montgomery, R., Rosner, G., Achenbach, P., Cardinali, M., Hoek, M., Lauth, W., Sfienti, C., Thiel, M., Bühler, P., Gruber, L., Marton, J., and Suzuki, K. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment |
| Publisher: | Elsevier BV |
| ISSN: | 0168-9002 |
| ISSN (Online): | 1872-9576 |
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