Radiation-hardened magnets using mineral-insulated conductors
Radiation-hardened magnets using mineral-insulated conductors
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使用矿物绝缘导体的抗辐射磁体
DOI：
10.2172/4463934
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发表时间：
1973
期刊：
影响因子：
--
通讯作者：
A. Harvey
中科院分区：
文献类型：
--
作者：
A. Harvey
LAMPF高强度直线加速器实验区的一个独特之处是广泛使用无机磁体线圈来承受预期的高辐射剂量。在大量的这些磁体中，线圈绝缘是压实的氧化镁粉末（“矿物绝缘”，m.i.）并将预绝缘电缆缠绕成所需的线圈结构。虽然电缆本身与裸铜导体相比昂贵，但成品线圈的成本与传统线圈相当，因为线圈绕线机不需要绝缘应用。LAMPF使用两种导体形式：实心导体，外部冷却，使用软焊料改善线圈内的热传递;直接冷却，空心导体m.i.电缆.在LAMPF，两种导体类型的额定值都是保守的。间接冷却线圈专门用于开关站磁铁，要求低磁场强度和高质量。用于靶对靶传输和次级束线的高功率磁体使用直接冷却。描述了在电缆上制造终端的方法。所有这些磁铁的测量操作参数列表。对弯曲磁铁和四极磁铁的极成形技术进行了研究，并给出了结果。
A unique feature of the LAMPF high-Intensity linac experimental area is the extensive use of inorganic magnet coils to withstand the high radiation doses expected. In a large number of these magnets the coil insulation is compacted magnesium oxide powder ("mineral insulation," m.i.) and pre-insulated cable is wound into the required coil configuration. Although the cable itself Is expensive compared to bare copper conductor, the finished coil cost is comparable to a conventional coil, since no Insulation application is required of the coil winder. Two conductor formats are used at LAMPF: solid conductor, externally cooled, using soft solder to improve the heat transfer within the coil; and directly cooled, hollow conductor m.i. cable. At LAMPF both conductor types are conservatively rated. Indirectly cooled coils are used exclusively in the switchyard magnets, where low field strengths and high quality are required. Higher-power magnets for target-to-target transport and secondary beam lines use direct cooling. Methods of making terminations on the cable are described. Measured operating parameters for all these magnets are tabulated. Poleshaping techniques for the bending magnets and quadrupoles are examined and the results given.