Online helium inventory monitoring of JLab cryogenic systems

Cryogenic Engineering Conference 2017

材料科学;物理学

Hasan, N.^1 ; Knudsen, P.^2 ; Wright, M.^2

Thomas Jefferson National Accelerator Facility, Newport News

VA

23606, United States^1

Facility for Rare Isotope Beams (FRIB), Michigan State University (MSU), East Lansing

MI

48824, United States^2

关键词: Cryogenic system;    Independent action;    Inventory management;    Monitoring programs;    Organic evolution;    Rapid identification;    Real time programs;    Real-fluid properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/278/1/012113/pdf
DOI  :  10.1088/1757-899X/278/1/012113

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

There are five cryogenic plants at Jefferson Lab which support the LINAC, experiment hall end-stations and test facility. The majority of JLab's helium inventory, which is around 15 tons, is allocated in the LINAC cryo-modules, with the majority of the balance of helium distributed at the cryogenic-plant level mainly as stored gas and liquid for stable operation. Due to the organic evolution of the five plants and independent actions within the experiment halls, the traditional inventory management strategy suffers from rapid identification of potential leaks. This can easily result in losses many times higher than the normally accepted (average) loss rate. A real-time program to quickly identify potential excessive leakage was developed and tested. This program was written in MATLAB