Phase 3A of a 3-phase 1.3-GHz LTS/HTS NMR magnet

三相 1.3GHz LTS/HTS NMR 磁体的第 3A 相

• 批准号: 8535412
• 负责人: Yukikazu Iwasa
• 金额: $ 16万
• 依托单位: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
• 依托单位国家: 美国
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-30 至 2015-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8535412
• 关键词: Award; Data; Dimensions; Elements; Frequencies; Goals; High temperature of physical object; Institutes; Japan; Laboratories; Long-Term Survivors; Magnetic Resonance; Magnetism; Measurement; Measures; Mechanical Stress; National Center for Research Resources; Performance; Phase; Preparation; Price; Process; Research; Resolution; Science; System; Techniques; Technology; Time; cold temperature; cost; design; magnetic field; operation; programs; screening; tool

DESCRIPTION (provided by applicant): In 2000, the NCRR awarded the MIT Francis Bitter Magnet Laboratory a Phase 1 program of a 3-phase project to complete a 1-GHz NMR magnet comprised of a low- temperature superconducting (LTS) magnet and a high-temperature superconducting (HTS) insert. With the successful completion of a 700-MHz LTS/HTS magneta 600- MHz LTS magnet and a 100-MHz HTS insertand the Phase 2 program about to end, we are poised to embark on Phase 3, first Phase 3A, to be followed by Phase 3B with an upgraded goal of completing a 1.3 GHz LTS/HTS NMR magnet (LH1.3G). The two most compelling arguments for extending NMR to higher frequencies are better spectral resolution and sensitivity. The specific aims of the Phase 3A program are to: 1) complete a 600-MHz all-HTS insert (H600) and operate it in the bore of a 500 MHz LTS NMR magnet (L500), already available at FBML, not only to generate a 1.1 GHz field (25.84 T) but also to subject H600 to a magnetic field and mechanical stresses sufficient enough to demonstrate its successful performance in the bore of a 700-MHz LTS magnet (L700) in Phase 3B; 2) measure the harmonic errors generated by screening- current fields of H600 itself and in combination with L500; and 3) develop techniques, to be applied to LH1.3G, to ameliorate the harmonic errors of H600. The specific aims of the Phase 3B program are to: 1) complete a high-resolution 1.3 GHz LTS/HTS NMR magnet, achieved with a combination of H600 completed in Phase 3A and a new L700; and 2) install the LH1.3G as a new powerful tool for NMR research in the MIT/Harvard Center for Magnetic Resonance at FBML. The significance of the Phase 3A program is its direct and indispensable benefit to LH1.3G, in which H600, together with L700, will constitute two key magnet components.Significant goals in Phase 3A, all of which are essential elements required to complete a high-resolution 1.3 GHz LTS/HTS NMR magnet in Phase 3B: 1) completion of a 600 MHz HTS (H600) insert capable of operating in a background field of an LTS 700-MHz NMR magnet (L700); 2) completion of a 1.1-GHz NMR magnet comprising the H600 and an 500-MHz LTS NMR magnet; 3) the magnetic characterization of H600. The two most compelling arguments for extending NMR to higher field are spectral resolution and sensitivity.

描述(由申请人提供)：2000年，NCRR授予麻省理工学院弗朗西斯苦磁实验室一个三阶段项目的第一阶段计划，以完成1 GHz核磁共振磁体，该磁体由低温超导(LTS)磁体和高温超导(HTS)插件组成。随着700 MHz LTS/HTS磁体、600 MHz LTS磁体和100 MHz高温超导磁体的成功完成以及第二阶段计划即将结束，我们准备开始第三阶段，第一阶段3A，紧随其后的第三阶段B，升级目标是完成1.3 GHz LTS/HTS核磁共振磁体(LH1.3G)。将核磁共振扩展到更高频率的两个最有说服力的理由是更好的光谱分辨率和灵敏度。3A阶段计划的具体目标是：1)完成600 MHz全高温超导插件(H600)，并将其运行在已在FBML获得的500 MHz LTS核磁共振磁体(L500)的内孔中，不仅产生1.1 GHz磁场(25.84 T)，而且使H600受到足够的磁场和机械应力，足以证明其在3B阶段700-MHz LTS磁体(L700)的内孔中的成功性能；2)测量H600本身的屏蔽电磁场以及与L500结合产生的谐波误差；3)开发了应用于LH1.3G的技术，以改善H600的谐波误差。3B阶段计划的具体目标是：1)完成一个高分辨率1.3 GHz LTS/HTS核磁共振磁体，结合在3A阶段完成的H600和一个新的L700；以及2)安装LH1.3G，作为麻省理工学院/哈佛大学位于FBML的磁共振中心进行核磁共振研究的新的强大工具。3A阶段计划的重要意义在于它对LH1.3G直接和不可或缺的好处，其中H600和L700将构成两个关键的磁体组件。3A阶段的重要目标，所有这些都是在3B阶段完成高分辨率1.3 GHz LTS/HTS核磁共振磁体所必需的：1)完成能够在LTS 700-MHz核磁共振磁体(L700)的背景场中操作的600 MHz高温超导(H600)插入件；2)完成由H600和500-MHz LTS核磁共振磁体组成的1.1 GHz核磁共振磁体；3)H600的磁特性。将核磁共振扩展到更高领域的两个最令人信服的论点是光谱分辨率和灵敏度。