Detection of the primary scintillation light from dense Ar, Kr and Xe with novel photosensitive gaseous detectors
Detection of the primary scintillation light from dense Ar, Kr and Xe with novel photosensitive gaseous detectors
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DOI：
10.1016/s0168-9002(01)01779-x
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发表时间：
2001-06
影响因子：
1.4
通讯作者：
L. Periale;V. Peskov;P. Carlson;T. Francke;P. Pavlopoulos;P. Picchi;F. Pietropaolo
中科院分区：
文献类型：
--
作者：
L. Periale;V. Peskov;P. Carlson;T. Francke;P. Pavlopoulos;P. Picchi;F. Pietropaolo
初级闪烁光与电荷或次级闪烁信号的结合的检测是确定事件“t=0”以及填充有稀有气体和/或冷凝稀有气体的大质量TPC探测器中的粒子/光子分离的有效技术。这项工作的目的是证明昂贵的光电倍增器可以被廉价的新型光敏气体探测器取代：线计数器、GEM 或与 CsI 光电阴极耦合的玻璃毛细管板。我们在 1-50atm 压力范围内对 Ar、Kr 和 Xe 气体进行了系统测量，并对液态 Xe 和液态 Ar 进行了一些初步测量。利用气体探测器，我们成功地探测到了 22keV X 射线产生的闪烁光，效率接近 100%。我们还检测到了 β（5keV 沉积能量）产生的闪烁光，效率接近 25%。成功检测到 22keV X 射线闪烁不仅为 nTOF 和 ICARUS 实验开辟了新的实验可能性，而且还为其他实验开辟了新的可能性，例如 WIMP 通过核反冲发射进行的搜索。
The detection of primary scintillation light in combination with the charge or secondary scintillation signals is an efficient technique in determining the events “t=0” as well as particle/photon separation in large mass TPC detectors filled with noble gases and/or condensed noble gases. The aim of this work is to demonstrate that costly photo-multipliers could be replaced by cheap novel photosensitive gaseous detectors: wire counters, GEMs or glass capillary plates coupled with CsI photocathodes. We have performed systematic measurements with Ar, Kr and Xe gases at pressures in the range of 1–50atm as well as some preliminary measurements with liquid Xe and liquid Ar. With the gaseous detectors we have succeeded in detecting a scintillation light produced by 22keV X-rays with an efficiency close to 100%. We also detected the scintillation light produced by β’s (5keV deposit energy) with an efficiency close to 25%. Successful detection of scintillation from 22keV X-rays open new experimental possibilities not only for nTOF and ICARUS experiments, but also in others, such as WIMP's search through nuclear recoil emission.