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arXiv 0909.5357physics.ins-dethep-ex
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THGEM紫外光子探测器的研究:Ne/CH4和Ne/CF4的单光子探测效率

Towards THGEM UV-photon detectors for RICH: on single-photon detection efficiency in Ne/CH4 and Ne/CF4

C. D. R. Azevedo, M. Cortesi, A. V. Lyashenko, A. Breskin, R. Chechik, J. Miyamoto, V. Peskov, J. Escada, J. F. C. A. Veloso, J. M. F. dos Santos

摘要:

本文研究了由CsI光电阴极涂层的厚气电子倍增器(THGEM)组成的紫外光子探测器在Ne/CH_4和Ne/CF_4混合气体中的探测效率。我们报告的光电子提取效率从光阴极到这些气体混合物,并在光电子收集效率到THGEM孔。在研究的所有气体中达到完全收集效率,在某些情况下以相对低的倍增。在相对较低的工作电压下,使用单个THGEM元件可以达到超过10^5的UV光子的高总探测器增益。我们讨论的背景下,可能的应用程序丰富的光子探测效率。

英文摘要:

The article deals with the detection efficiency of UV-photon detectors consisting of Thick Gas Electron Multipliers (THGEM) coated with CsI photocathode, operated in atmospheric Ne/CH4 and Ne/CF4 mixtures. We report on the photoelectron extraction efficiency from the photocathode into these gas mixtures, and on the photoelectron collection efficiency into the THGEM holes. Full collection efficiency was reached in all gases investigated, in some cases at relatively low multiplication. High total detector gains for UV photons, in excess of 10^5, were reached at relatively low operation voltages with a single THGEM element. We discuss the photon detection efficiency in the context of possible application to RICH.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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