Power Tests of the First Nested Orbit Corrector Prototype for HL-LHC
Power Tests of the First Nested Orbit Corrector Prototype for HL-LHC
复制标题
第一个 HL-LHC 嵌套轨道校正器原型的功率测试
DOI：
10.1109/tasc.2020.2971945
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发表时间：
2020
影响因子：
1.8
通讯作者：
T. Martínez
中科院分区：
文献类型：
--
作者：
J. A. García;J. Munilla;J. A. Pardo;J. Pérez;P. Sobrino;F. Toral;M. Bajko;Sohrab Emami;L. Fiscarelli;M. Guinchard;S. Bermúdez;J. Calero;F. Mangiarotti;J. Perez;E. Todesco;G. Willering;Manuel Ángel Domínguez;A. Fernández;P. Gómez;L. García;D. López;L. M. Martínez;T. Martínez
用于升级 LHC 的第一个短轨道校正器原型已在 CIEMAT 与 CERN 合作、在 HL-LHC 项目框架内制造出来。它由两个嵌套偶极子组成，孔径为 150 mm，物理长度为 1.5 m。第一次功率测试是在没有外部偶极线圈的情况下进行的，用支撑结构代替外部偶极线圈，以将铁轭与带环的内部偶极子对齐。该测试旨在验证线圈制造技术，该技术对于 NbTi 卢瑟福电缆来说是创新的。在完整组装的磁体的功率测试中，两个偶极子的单独训练都很好达到极限电流。然而，磁铁在组合操作中无法达到标称扭矩。需要进行多次功率测试和重新组装才能为两个偶极子供电直至达到标称电流。本文描述了测试结果和测量分析。磁铁上装有大量的电压抽头、带有应变计的套环和轴向推动器上的子弹头测量仪。
The first prototype of the short orbit corrector for the upgrade of the LHC has been fabricated at CIEMAT, in collaboration with CERN, in the framework of the HL-LHC project. It consists of two nested dipoles, with an aperture of 150 mm and physical length of 1.5 m. A first power test was performed without the outer dipole coils, which were replaced by a support structure to align the iron yoke with the collared inner dipole. This test was aimed to validate the coil fabrication techniques, which are innovative for a NbTi Rutherford cable. In the power test of the full assembled magnet, individual training of both dipoles was fine to ultimate current. However, the magnet was not able to reach nominal torque in combined operation. Several power tests and re-assemblies were necessary to be able to power both dipoles till nominal current. This paper describes the test results and analysis of the measurements. The magnet is heavily instrumented with voltage taps, collars with strain gauges and bullet gauges at the axial pushers.