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: 7664970
• 负责人: Yukikazu Iwasa
• 金额: $ 52.53万
• 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 2012-05-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7664970
• 关键词: Award; Data; Dimensions; Elements; Figs - dietary; 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; Operative Surgical Procedures; Performance; Phase; Preparation; Price; Process; Research; Resolution; Science; Screening procedure; System; Techniques; Technology; Time; cold temperature; cost; design; magnetic field; programs; 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比特磁体实验室一个3阶段项目的第1阶段计划，以完成由低温超导（LTS）磁体和高温超导（HTS）插入物组成的1-GHz NMR磁体。随着700-MHz LTS/HTS磁体和600- MHz LTS磁体和100-MHz HTS插入物的成功完成，以及第2阶段计划即将结束，我们准备开始第3阶段，首先是第3A阶段，然后是第3B阶段，升级目标是完成1.3 GHz LTS/HTS NMR磁体（LH1.3G）。将NMR扩展到更高频率的两个最令人信服的论点是更好的光谱分辨率和灵敏度。3A期项目的具体目标是：1）完成600 MHz全HTS插入件（H600），并在500 MHz LTS NMR磁体（L500）的孔中操作它，该磁体已在FBML提供，不仅能产生1.1 GHz的磁场（25.84 T），但也使H600经受足以证明其在700- 1000毫米口径的膛中成功性能的磁场和机械应力。MHz LTS磁体（L700）; 2）测量H600本身以及与L500组合的屏蔽电流场产生的谐波误差; 3）开发将应用于LH1.3G的技术，以改善H600的谐波误差。阶段3B计划的具体目标是：1）完成一个高分辨率的1.3 GHz LTS/HTS NMR磁体，通过阶段3A中完成的H600和新的L700的组合实现; 2）将LH 1.3 G作为一个新的强大工具安装在麻省理工学院/哈佛磁共振中心FBML的NMR研究中。阶段3A计划的重要性在于其对LH1.3G的直接和不可或缺的好处，其中H600与L700将构成两个关键的磁体组件。阶段3A的重要目标，所有这些都是在阶段3B中完成高分辨率1.3 GHz LTS/HTS NMR磁体所需的基本要素：1）完成能够在LTS 700-MHz NMR磁体（L700）的背景场中操作的600 MHz HTS（H600）插入物; 2）完成包含H600和500-MHz LTS NMR磁体的1.1-GHz NMR磁体; 3）H600的磁性表征。将NMR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。