Xenoscope的2.6米高两相氙时间投影室调试

Design and construction of Xenoscope -- a full-scale vertical demonstrator for the DARWIN observatory

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, includi…

SiPM array of Xenoscope, a full-scale DARWIN vertical demonstrator

The DARWIN project aims to build and operate a next-generation observatory for dark matter and neutrino physics, featuring a time projection chamber with a proposed active target of 40 t of liquid xenon. As an R&D facility to test fundamental components of the future detector, Xenoscope, a full-scale vertical demonstrator with ~400 kg of liquid xenon and up to 2.6 m electron drift length, was built at the University of Zurich. Its main objective is to demonstrate electron drift over unprecedented distances in liquid xenon - first in a purity monitor setup with charge readout, followed by a dua…

利用大型DARWIN演示装置Xenoscope开展的液态氙中电子输运测量

Electron transport measurements in liquid xenon with Xenoscope, a large-scale DARWIN demonstrator

本研究利用为DARWIN实验建造的全尺寸演示装置Xenoscope，开展343千克液态氙的电子输运测量，测得纯化88天后电子寿命达664(23)微秒，漂移速度与纵向扩散常数结果符合已有数据与模型预测。