Development of High Resolution Homogeneous Calorimeter Using Liquid Xenon

开发使用液氙的高分辨率均质量热计

基本信息

批准号：
16340064
负责人：
MORI Toshinori
金额：
$ 10.5万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2005
项目状态：
已结题

项目摘要

In this scientific research project we have developed high resolution homogeneous calorimeter using liquid xenon.This new type of calorimeter uses liquid xenon as the active medium that emits UV scintillation lights upon incidence of gamma rays and electrons. A number of photomultiplier tubes (PMTs) surrounding the liquid xenon measure these scintillation lights. The calorimeter does not contain any passive material like electrodes in the liquid xenon volume, thus can fully observe all the energy deposits.We mostly concentrated on developments of various technologies necessary to realize a large volume (an order of 1,000 liters or 3 tons) detector.Liquid xenon as the detector medium is guaranteed to be perfectly uniform, however, some impurity contamination, if it exists, absorbs the scintillation light and could deteriorate the performance of such a large volume device. We successfully developed a new, efficient purification method to remove impurities very quickly by circulating liqu … More id xenon through molecular sieves using a cryogenic centrifugal liquid pump. We also developed methods and techniques for xenon transfer, xenon pressure/temperature control, safety precaution, etc. These are necessary for practical application of a large volume liquid xenon detector.We examined the performance of a liquid xenon detector by using π^0 decays. In this test we collected waveform data of PMTs and proved that we can distinguish incident gamma-rays from alpha particles. We also succeeded in developing a new type of PMTs with photocathode and base circuit that can sustain very high background rates even at low temperatures. Computer codes were developed to simulate the detector response and were shown to agree very well with the observed data.An avalanche photodiode (APD) was operated and tested in liquid xenon. The APD is very compact and has a very high quantum efficiency. The success of this test opened up extensive future applications such as monitoring of absorption length. Less

在这个科学研究项目中，我们使用液体氙气开发了高分辨率的同质calolimeter。这种新型的Calolimeter使用液体氙气作为在伽马射线和电子发病率下发出紫外线的活性培养基。这些闪烁的灯光测量围绕液体氙气测量的许多光电层管（PMTS）。 calolimimeter不包含液体氙气体积中的任何被动材料，因此可以完全观察所有能量沉积物。我们主要集中于实现大容量（1000升或3吨）检测器所需的各种技术的发展。如此大容量的设备的性能。我们成功地开发了一种新的，有效的纯化方法，可以通过循环液体循环液体来快速清除杂质……使用低温离心液泵，通过分子筛子进行更多的ID Xenon。我们还开发了用于XENON转移，XENON压力/温度控制，安全预防措施等的方法和技术。这些对于实际应用大量液体XENON检测器所必需的。我们使用π^0衰减检查了液体XENON检测器的性能。在此测试中，我们收集了PMT的波形数据，并证明我们可以将入射伽马射线与α颗粒区分开。我们还成功地开发了一种具有光电电路和基本电路的新型PMT，即使在低温下也可以维持很高的背景速率。开发了计算机代码以模拟检测器响应，并被证明与观察到的数据非常吻合。雪崩光电二极管（APD）在液体氙气中进行了操作和测试。 APD非常紧凑，具有很高的量子效率。该测试的成功开辟了广泛的未来应用，例如监视滥用长度。较少的

项目成果

期刊论文数量（8）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Development of a liquid-xenon photon detector towards the search for a muon rare decay mode at Paul Scherrer Institute

保罗谢勒研究所开发液氙光子探测器以寻找μ子稀有衰变模式

DOI：
发表时间：
2004
期刊：
Cryogenics 44
影响因子：
0
作者：
K.Shinto;H.Sugawara;M.Takenaga;S.Takeuchi;N.Tanaka;A.Okamoto;S.Kitajima;M.Sasao;M.Nishiura;M.Wada;S.Mihara 他
通讯作者：
S.Mihara 他

Development of a Method for Liquid Xenon Purfiction Using a Cryogenic Centrifugal Pump

使用低温离心泵净化液氙的方法的开发