We describe the design of a 20-liter test stand constructed to study fundamental properties of liquid argon (LAr). This system utilizes a simple, cost-effective gas argon (GAr) purification to achieve high purity, which is necessary to study electron transport properties in LAr. An electron drift stack with up to 25 cm length is constructed to study electron drift, diffusion, and attachment at various electric fields. A gold photocathode and a pulsed laser are used as a bright electron source. The operational performance of this system is reported.
@article{arxiv.1602.01884,
title = {A 20-Liter Test Stand with Gas Purification for Liquid Argon Research},
author = {Yichen Li and Craig Thorn and Wei Tang and Jyoti Joshi and Xin Qian and Milind Diwan and Steve Kettell and William Morse and Triveni Rao and James Stewart and Thomas Tsang and Lige Zhang},
journal= {arXiv preprint arXiv:1602.01884},
year = {2016}
}
Comments
18 pages, 11 figures, Accepted by JINST on May 31, 2016