PERFORMANCE OF PHOTOMULTIPLIERS EXPOSED TO HELIUM.

被引:0
|
作者
Incandela, J.R. [1 ]
Ahlen, S.P. [1 ]
Beatty, J. [1 ]
Ciocio, A. [1 ]
Felcini, M. [1 ]
Ficenec, D. [1 ]
Hazen, E. [1 ]
Levin, D. [1 ]
Marin, A. [1 ]
Stone, J.L. [1 ]
Sulak, L.R. [1 ]
Worstell, W. [1 ]
机构
[1] Boston Univ, Boston, MA, USA, Boston Univ, Boston, MA, USA
来源
Nuclear instruments and methods in physics research | 1988年 / A269卷 / 01期
关键词
GLASS; -; HELIUM;
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摘要
We report results of a study to determine how the performance of photomultipliers is affected by exposure to He. In our tests we monitor two 5 in. diameter EMI hemispherical photomultipliers while they are operated in He environments. Initially we observe He** plus afterpulses at an approximately constant delay relative to the primary anode pulse. As the He gas pressure in the tubes increases however, strings of pulses typical of Townsend discharges occur.
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页码:237 / 245
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