Protection Strategy and Quench Study of MCBXF Magnets
Protection Strategy and Quench Study of MCBXF Magnets
复制标题
MCBXF磁体的保护策略及淬火研究
DOI：
10.1109/tasc.2022.3159776
复制
发表时间：
2022
影响因子：
1.8
通讯作者：
G. Willering
中科院分区：
文献类型：
--
作者：
F. Toral;C. Alcázar;M. Domínguez;Ó. Durán;A. Fernández;J. A. García;L. García;L. González;P. Gómez;J. Jiménez;T. Martínez;C. M. Jardim;J. A. Pardo;J. Pérez;P. Sobrino;S. Ferradas;S. Bermúdez;J. Perez;E. Todesco;G. Willering
大型强子对撞机的升级需要嵌套组合轨道校正器。它们是由CIEMAT与CERN在HL-LHC项目框架下合作开发的。有两种类型的磁铁，所谓的MCBXFA和MCBXFB，具有不同的长度（分别为2.5米和1.5米），但具有相同的横截面。两个磁体的线圈都用相同的卢瑟福型NbTi电缆缠绕，该电缆由18股直径0.48 mm的电缆组成，用编织的玻璃纤维套管绝缘。考虑了MCBXF磁体的各种磁铁保护方案。本文讨论了自保护、能量提取电阻和淬火加热器，并强调了每种策略的优缺点。该分析由Squid （CIEMAT内部开发的代码）和Roxie执行的淬火计算支持。给出了选定的淬火模拟结果，并与磁体样机的测量结果进行了比较。在此基础上，选择了带能量提取电阻的串联磁体保护方案。对电阻器的取值进行了优化，并进行了相应的淬火计算。
Nested combined orbit correctors are needed for the upgrade of LHC. They are developed at CIEMAT, in collaboration with CERN in the framework of HL-LHC project. There are two types of magnets, so-called MCBXFA and MCBXFB, with different lengths (2.5 and 1.5 m, respectively), but sharing the same cross section. The coils of both magnets are wound with the same Rutherford-type NbTi cable, composed of 18 strands of 0.48 mm diameter, insulated with a braided glass fiber sleeve. Various magnet protection schemes were considered for MCBXF magnets. In this work, self-protection, energy extraction resistor and quench heaters are discussed emphasizing advantages and disadvantages of each strategy. This analysis is supported by quench calculations performed with Squid (CIEMAT in-house developed code) and Roxie. Selected quench simulation results are presented and compared with measurements done on magnet prototypes. Based on the presented study, a protection scheme with energy extraction resistor was selected for the series magnets. The value of the resistor was optimized and related quench calculations are also included.