Superconductor Science & Technology最新文献

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Progresses and challenges in the development of high-field solenoidal magnets based on RE123 coated conductors. 基于RE123涂层导体的高场电磁磁体的研究进展与挑战。

IF 3.6 1区物理与天体物理 Q2 PHYSICS, APPLIED

Superconductor Science & Technology

Pub Date : 2014-01-01 Epub Date: 2014-09-19 DOI: 10.1088/0953-2048/27/10/103001

Carmine Senatore, Matteo Alessandrini, Andrea Lucarelli, Riccardo Tediosi, Davide Uglietti, Yukikazu Iwasa

Recent progresses in the second generation REBa2Cu3O7 − x (RE123) coated conductor (CC) have paved a way for the development of superconducting solenoids capable of generating fields well above 23.5 T, i.e. the limit of NbTi−Nb3Sn-based magnets. However, the RE123 magnet still poses several fundamental and engineering challenges. In this work we review the state-of-the-art of conductor and magnet technologies. The goal is to illustrate a close synergetic relationship between evolution of high-field magnets and advancement in superconductor technology. The paper is organized in three parts: (1) the basics of RE123 CC fabrication technique, including latest developments to improve conductor performance and production throughput; (2) critical issues and innovative design concepts for the RE123-based magnet; and (3) an overview of noteworthy ongoing magnet projects.

第二代REBa2Cu3O7 - x (RE123)涂层导体(CC)的最新进展为能够产生远高于23.5 T的超导螺线管(即NbTi-N b3sn基磁体的极限)的发展铺平了道路。然而，RE123磁铁仍然面临着一些基本和工程上的挑战。在这项工作中，我们回顾了导体和磁体技术的最新进展。目的是说明高场磁体的发展和超导体技术的进步之间的密切协同关系。本文分为三个部分:(1)RE123 CC制造技术的基础，包括提高导体性能和生产吞吐量的最新进展;(2)基于re123的磁体的关键问题和创新设计理念;(3)概述值得注意的正在进行的磁体项目。

引用次数: 222

Turn-to-turn contact characteristics for an equivalent circuit model of no-insulation ReBCO pancake coil. 无绝缘 ReBCO 薄饼线圈等效电路模型的匝间接触特性。

IF 3.7 1区物理与天体物理 Q2 PHYSICS, APPLIED

Superconductor Science & Technology

Pub Date : 2013-01-01 Epub Date: 2013-01-28 DOI: 10.1088/0953-2048/26/3/035012

Xudong Wang, Seungyong Hahn, Youngjae Kim, Juan Bascuñán, John Voccio, Haigun Lee, Yukikazu Iwasa

This paper presents experimental and analytical studies on the characteristic resistance of NI (no-insulation) ReBCO pancake coils, which are used in an equivalent circuit model to characterize 'radial as well as spiral' current paths within the NI coils. We identified turn-to-turn contact resistance as a major source of the characteristic resistance of an NI coil. In order to verify this, three single pancake NI HTS coils-60, 40, 20 turns-were fabricated with their winding tension carefully maintained constant. A sudden discharge test was performed on each coil to obtain its characteristic resistance, and the relation between the turn-to-turn contact and the characteristic resistance was investigated. Based on the characteristic resistance and the n-value model, an equivalent circuit model was proposed to characterize the time-varying response of the NI coils. Charging tests were performed on the three test coils and the experimental results were compared with the simulated ones to validate the proposed approach with the equivalent circuit model.

本文介绍了对 NI（无绝缘）ReBCO 薄饼线圈特性阻抗的实验和分析研究，并将其用于等效电路模型，以确定 NI 线圈内 "径向和螺旋 "电流路径的特性。我们发现匝间接触电阻是 NI 线圈特性阻抗的主要来源。为了验证这一点，我们制作了三个单薄饼 NI HTS 线圈--60、40 和 20 匝，并小心保持其绕组张力恒定。对每个线圈都进行了突然放电测试，以获得其特性阻抗，并研究了匝间接触与特性阻抗之间的关系。根据特征电阻和 n 值模型，提出了一个等效电路模型来描述 NI 线圈的时变响应。对三个测试线圈进行了充电测试，并将实验结果与模拟结果进行了比较，以验证所提出的等效电路模型方法。

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