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Design and construction of Xenoscope — a full-scale vertical demonstrator for the DARWIN observatory
Journal of Instrumentation ( IF 1.3 ) Pub Date : 2021-08-20 , DOI: 10.1088/1748-0221/16/08/p08052
L. Baudis 1 , Y. Biondi 1 , M. Galloway 1 , F. Girard 1 , A. Manfredini 1 , N. McFadden 1 , R. Peres 1 , P. Sanchez-Lucas 1 , K. Thieme 1
Affiliation  

The DARWIN observatory is a proposed next-generation experiment to search for particle dark matter and other rare interactions. It will operate a 50 t liquid xenon detector, with 40 t in the time projection chamber (TPC). To inform the final detector design and technical choices, a series of technological questions must first be addressed. Here we describe a full-scale demonstrator in the vertical dimension, Xenoscope, with the main goal of achieving electron drift over a 2.6 m distance, which is the scale of the DARWIN TPC. We have designed and constructed the facility infrastructure, including the cryostat, cryogenic and purification systems, the xenon storage and recuperation system, as well as the slow control system. We have also designed a xenon purity monitor and the TPC, with the fabrication of the former nearly complete. In a first commissioning run of the facility without an inner detector, we demonstrated the nominal operational reach of Xenoscope and benchmarked the components of the cryogenic and slow control systems, demonstrating reliable and continuous operation of all subsystems over 40 days. The infrastructure is thus ready for the integration of the purity monitor, followed by the TPC. Further applications of the facility include R&D on the high voltage feedthrough for DARWIN, measurements of electron cloud diffusion, as well as measurements of optical properties of liquid xenon. In the future, Xenoscope will be available as a test platform for the DARWIN collaboration to characterise new detector technologies.



中文翻译:

Xenoscope 的设计和建造 — 达尔文天文台的全尺寸垂直演示器

达尔文天文台是一项拟议的下一代实验,用于寻找粒子暗物质和其他稀有相互作用。它将运行 50 吨液态氙探测器,其中 40 吨在时间投射室 (TPC) 中。为了告知最终的探测器设计和技术选择,必须首先解决一系列技术问题。在这里,我们描述了一个垂直维度的全尺寸演示器 Xenoscope,其主要目标是实现 2.6 m 距离上的电子漂移,这是 DARWIN TPC 的规模。我们设计并建造了设施基础设施,包括低温恒温器、低温和净化系统、氙气储存和回收系统以及慢速控制系统。我们还设计了氙气纯度监​​测器和 TPC,前者的制造已接近完成。在没有内部探测器的设施的第一次调试运行中,我们展示了 Xenoscope 的标称操作范围,并对低温和慢速控制系统的组件进行了基准测试,证明了所有子系统在 40 天内的可靠和连续运行。因此,基础设施已准备好集成纯度监测器,然后是 TPC。该设施的进一步应用包括 DARWIN 高压馈通的研发、电子云扩散的测量以及液态氙的光学特性的测量。未来,Xenoscope 将作为 DARWIN 合作的测试平台提供,以表征新的探测器技术。我们展示了 Xenoscope 的标称操作范围,并对低温和慢速控制系统的组件进行了基准测试,展示了所有子系统在 40 天内的可靠和连续运行。因此,基础设施已准备好集成纯度监测器,然后是 TPC。该设施的进一步应用包括 DARWIN 高压馈通的研发、电子云扩散的测量以及液态氙的光学特性的测量。未来,Xenoscope 将作为 DARWIN 合作的测试平台提供,以表征新的探测器技术。我们展示了 Xenoscope 的标称操作范围,并对低温和慢速控制系统的组件进行了基准测试,展示了所有子系统在 40 天内的可靠和连续运行。因此,基础设施已准备好集成纯度监测器,然后是 TPC。该设施的进一步应用包括 DARWIN 高压馈通的研发、电子云扩散的测量以及液态氙的光学特性的测量。未来,Xenoscope 将作为 DARWIN 合作的测试平台提供,以表征新的探测器技术。其次是TPC。该设施的进一步应用包括 DARWIN 高压馈通的研发、电子云扩散的测量以及液态氙的光学特性的测量。未来,Xenoscope 将作为 DARWIN 合作的测试平台提供,以表征新的探测器技术。其次是TPC。该设施的进一步应用包括 DARWIN 高压馈通的研发、电子云扩散的测量以及液态氙的光学特性的测量。未来,Xenoscope 将作为 DARWIN 合作的测试平台提供,以表征新的探测器技术。

更新日期:2021-08-20
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