当前位置: X-MOL 学术IEEE Trans. Appl. Supercond. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Construction and Test Results of Coils 2 and 3 of a 3-Nested-Coil 800-MHz REBCO Insert for the MIT 1.3-GHz LTS/HTS NMR Magnet
IEEE Transactions on Applied Superconductivity ( IF 1.7 ) Pub Date : 2018-04-01 , DOI: 10.1109/tasc.2017.2780043
Dongkeun Park 1 , Juan Bascuñán 1 , Philip C Michael 1 , Jiho Lee 1 , Seungyong Hahn 2 , Yukikazu Iwasa 1
Affiliation  

We present the construction and test results of Coils 2 and 3 of a 3-coil 800-MHz REBCO insert (H800) for the MIT 1.3 GHz LTS/HTS NMR magnet currently under construction. Each of three H800 coils (Coils 1–3) is a stack of no-insulation REBCO double pancakes (DPs). The innermost 8.67-T Coil 1 (26 DPs) was completed in 2016; the middle 5.64-T Coil 2 (32 DPs) has been wound, assembled, and tested; and for the outermost 4.44-T Coil 3, its 38 DPs have been wound and preliminary tests were performed to characterize each DP at 77 K. Included for Coil 2 are: 1) 77-K data of critical current, index, and turn-to-turn characteristic resistivity of each DP; 2) stacking order of the 32 DPs optimized to maximize the Coil 2 current margin and minimize its Joule dissipation in the pancake-to-pancake joints; 3) procedure to experimentally determine and apply a room-temperature preload to the DP stack; 4) 77- and 4.2-K test results after each of 64 pancakes was over-banded with a 75-μm-thick stainless steel tape for a radial thickness of 5 mm. Presented for each DP in Coil 3 are 77-K dada of critical current, index, and turn-to-turn characteristic resistivity.

中文翻译:


用于 MIT 1.3 GHz LTS/HTS NMR 磁体的 3 嵌套线圈 800 MHz REBCO 插入物的线圈 2 和 3 的构造和测试结果



我们展示了目前正在建造的 MIT 1.3 GHz LTS/HTS NMR 磁体的 3 线圈 800 MHz REBCO 插入件 (H800) 的线圈 2 和 3 的构造和测试结果。三个 H800 线圈(线圈 1-3)中的每一个都是一堆非绝缘 REBCO 双煎饼 (DP)。最里面的8.67-T卷1(26个DP)于2016年完成;中间的 5.64-T 线圈 2(32 个 DP)已绕线、组装和测试;对于最外面的 4.44-T 线圈 3,其 38 个 DP 已绕制,并进行了初步测试,以表征每个 DP 在 77 K 时的特性。线圈 2 包括: 1) 临界电流、指数和转数的 77-K 数据每个DP的匝特性电阻率; 2) 优化 32 个 DP 的堆叠顺序,以最大限度地提高线圈 2 的电流裕度并最大限度地降低其在煎饼对煎饼接头中的焦耳耗散; 3) 通过实验确定并向 DP 组施加室温预载的程序; 4) 64 个煎饼中的每一个都用 75 μm 厚的不锈钢带过度捆扎,径向厚度为 5 mm,之后的 77-和 4.2-K 测试结果。为线圈 3 中的每个 DP 提供了临界电流、折射率和匝间特性电阻率的 77-K 数据。
更新日期:2018-04-01
down
wechat
bug