Development of an HTS Accelerator Magnet With REBCO Coils for Tests at HIMAC Beam Line
Development of an HTS Accelerator Magnet With REBCO Coils for Tests at HIMAC Beam Line
复制标题
开发带有 REBCO 线圈的 HTS 加速器磁体，用于 HIMAC 束线测试
DOI：
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发表时间：
2019
影响因子：
1.8
通讯作者：
M. Yoshimoto
中科院分区：
文献类型：
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作者：
S. Takayama;S. Iwai;Y. Kubo;K. Koyanagi;H. Miyazaki;T. Orikasa;Y. Ishii;T. Kurusu;N. Amemiya;T. Ogitsu;Y. Iwata;K. Noda;M. Yoshimoto
日本科学技术厅根据其S-创新计划资助的一个研发项目目前正在进行中。该项目的目的是开发具有REBCO线圈的加速器磁体的基础技术。在该项目的第一步中，开发了用于制造HTS加速器磁体所需的REBCO线圈的缠绕技术。在该项目的最后阶段，有计划制造低温冷却器冷却的REBCO磁体，并评估在千叶重离子医疗加速器（HIMAC）的束线上对磁体的束流注入的束流引导特性和稳定性。本文介绍了一种高温超导磁体的设计制作此评估，并提出了这种磁体的制造结果。磁体具有用于束引导的尺寸为264× 40 mm的室温束导管。磁体由一对跑道线圈堆组成，每个线圈堆包含四个线圈，并采用冷铁来增加磁场强度。在200 A的激励下，它可以在束管产生2.4 T的偶极场.此外，在低温恒温器的侧面放置了束流窗口，用于束流注入测试，允许束流直接照射REBCO线圈。
An R&D project funded by the Japan Science and Technology Agency under its S-Innovation Program is currently in progress. The purpose of this project is to develop fundamental technologies for accelerator magnets with REBCO coils. In the first step of this project, winding technology for fabricating REBCO coils required for HTS accelerator magnets was developed. At the last stage of this project, there are plans to fabricate cryocooler-cooled REBCO magnets and evaluate the beam guiding characteristics and stability against beam injection to the magnets at the beam line of Heavy Ion Medical Accelerator in Chiba (HIMAC). This paper describes the design of an HTS magnet fabricated for this evaluation and presents fabrication results of this magnet. The magnet had a room-temperature beam duct with dimensions 264× 40 mm for beam guiding. The magnet consisted of a pair of racetrack coil stacks each containing four coils, and a cold iron was adopted to increase the magnetic field strength. It could generate a dipole field of 2.4 T at the beam duct by 200 A excitation. Furthermore, beam windows were placed on the side of the cryostat for beam injection tests, allowing the beam to irradiate the REBCO coil directly.