Title of article
Improved lifetime of microchannel-plate PMTs
Author/Authors
Lehmann، نويسنده , , A. and Britting، نويسنده , , A. and Eyrich، نويسنده , , W. and Uhlig، نويسنده , , F. and Dzhygadlo، نويسنده , , R. and Gerhardt، نويسنده , , A. and Gِtzen، نويسنده , , K. and Hِhler، نويسنده , , R. and Kalicy، نويسنده , , G. and Kumawat، نويسنده , , H. and Lehmann، نويسنده , , D. and Lewandowski، نويسنده , , B. and Patsyuk، نويسنده , , M. and Peters، نويسنده , , K. and Schepers، نويسنده , , G. and Schmitt، نويسنده , , Vladimir L. and Schwarz، نويسنده , , C. and Schwiening، نويسنده , , J. and Traxler، نويسنده , , M. and Zühlsdorf، نويسنده , , M. and Dodokhov، نويسنده , , V.Kh. and Düren، نويسنده , , M. and Fِhl، نويسنده , , K. and Hayrapetyan، نويسنده , , A. and Krِck، نويسنده , , B. and Merle، نويسنده , , O. and Rieke، نويسنده , , J. and Cowie، نويسنده , , E. and Keri، نويسنده , , T. and Montgomery، نويسنده , , Adam R. and Rosner، نويسنده , , G. and Achenbach، نويسنده , , P. and Cardinali، نويسنده , , M. and Hoek، نويسنده , , M. and Lauth، نويسنده , , W. and Sfienti، نويسنده , , C. and Thiel، نويسنده , , M. and Buhler، نويسنده , , P. and Gruber، نويسنده , , L. and Marton، نويسنده , , J. and Suzuki، نويسنده , , K.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2014
Pages
7
From page
138
To page
144
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 ≈ 6 C / cm 2 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.
Keywords
PANDA experiment , Microchannel plate photomultipliers , Lifetime , ALD coating , Single photons
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Serial Year
2014
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Record number
2196633
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