A LN2-based cryogenic system prototype for future PandaX experiment

TL;DR

This paper presents the development and testing of a cost-effective cryogenic prototype using LN2 for future liquid xenon detectors, demonstrating high cooling power and stable temperature control.

Contribution

It introduces an innovative cryogenic system prototype with a specially designed cold head and copper rod, optimized for efficient heat transport in xenon detectors.

Findings

Achieved over 1500W cooling power at 178K

Maintained temperature stability within 0.02K

Compared performance of the prototype with commercial refrigerators

Abstract

This paper describes results on R&D of an economical and efficient cryogenic system prototype for future liquid xenon detector. The test module of the prototype has a "cold head" attached to a copper rod, which is specially designed to transport heat loads to a free-boiling liquid nitrogen bath. The performance of the test module and commercial refrigerators is compared. The module with an optimized copper rod has demonstrated more than 1500W cooling power at 178K.The temperature of the "cold head" can be kept stable with an error of 0.02K, its fluctuation is within 0.1K.