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arXiv physics/0601120physics.ins-det
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MHSP倍增管在高压纯惰性气体中的运行

Operation of MHSP multipliers in high pressure pure noble-gas

F. D. Amaro, J. F. C. A. Veloso, A. Breskin, R. Chechik, J. M. F. dos Santos

摘要:

本文报道了在1 ~ 6巴的气压范围内,在纯氪、氪、氩和氖中工作的微孔带板(MHSP)电子倍增器的性能。在1巴时的最大增益分别为50000和100000;在2巴时下降约一个数量级,在5-6巴时下降几乎另一个数量级;在5巴时分别达到500和4000。在Ar中,增益随压力变化很小,为3000-9000;在Ne中,可达到的最大增益约为100000,与2巴以上的压力无关。结果进行了比较,在类似的条件下操作的单和三GEM乘法器。潜在的应用是在硬X射线成像和低温辐射探测器。

英文摘要:

We report on the performance of a Micro-Hole & Strip Plate (MHSP) electron multiplier operating in pure Xe, Kr, Ar and Ne at the pressure range of 1 to 6 bar. The maximal gains at 1 bar Xe and Kr are 50000 and 100000, respectively; they drop by about one order of magnitude at 2 bar and by almost another order of magnitude at 5-6 bar; they reach gains of 500 and 4000 at 5 bar in Xe and Kr, respectively. In Ar, the gain varies very little with pressure, being 3000-9000; in Ne the maximum attainable gain, about 100000, is pressure independent above 2 bar. The results are compared with that of single- and triple-GEM multipliers operated in similar conditions. Potential applications are in hard X-ray imaging and in cryogenic radiation detectors.

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