Thermal Model of a Quench in Superconducting Undulators

Cryogenic Engineering Conference 2017

材料科学;物理学

Shiroyanagi, Y.^1 ; Hasse, Q.^1 ; Ivanyushenkov, Y.^1 ; Kasa, M.^1

Advanced Photon Source, Argonne National Laboratory, Argonne

IL

60439, United States^1

关键词: Advanced photon source;    Cryogenic system;    Dynamic thermal modeling;    Effective energy;    Liquid helium;    Normal operations;    Superconducting undulators;    Thermal model;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/278/1/012183/pdf
DOI  :  10.1088/1757-899X/278/1/012183

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Currently there are two 1.1 m long planar superconducting undulators (SCUs) in operation in the Advanced Photon Source storage ring. Their NbTi magnets are cooled with liquid Helium (LHe) penetrating through a channel in the magnet coil formers. In this scheme, the latent heat of LHe provides an effective energy buffer that allows the magnet to return to normal operation within minutes. An FEA-based dynamic thermal model of the SCU is being developed to analyze the behavior of the SCU cryogenic systems during a quench. In this paper, preliminary results of these FEA-based calculations and a comparison with the current operation of SCUs are presented.