LOW AND HIGH TEMPERATURE SUPERCONDUCTING NMR MAGNET

低温和高温超导核磁共振磁铁

• 批准号: 6408002
• 负责人: Yukikazu Iwasa
• 金额: $ 0.1万
• 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 2002-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6408002
• 关键词: bioengineering /biomedical engineering; biomedical equipment development; cold temperature; heat; magnetic field; nuclear magnetic resonance spectroscopy; superconductivity

The investigators propose a three stage plan for developing a high temperature superconducting insert coil for a low temperature superconductor magnet for nuclear magnetic resonance spectroscopy in order to boost its working field strength to 23.5 Tesla, a field strength evidently beyond the limits of current NMR magnet technology, as further described by their abstract: "The specific aim of this 18-month Phase 1 program of a 3-Phase project is the completion of a high-resolution LTS/HTS NMR magnet--possibly the first of its kind at the proposed completion date (September 2001)--by integration of an existing LTS background magnet available at FBML and an HTS insert to be designed and built at FBML. This 3-phase initiative proposes to achieve the ultimate goal of a 52-mm RT bore high-resolution 1 GHz NMR magnet by December 2004. We believe that this ultimate goal is attainable only through the successful completion of Phases 1 and 2. In each phase an LTS/HTS unit will be built based on essentially the same design principles and philosophy. Phase 1 targets 450 MHz and Phase 2 targets the range 700-800 MHz. "The significance of the Phase 1 program is in two areas: 1) successful operation of a high-resolution LTS/HTS NMR magnet; 2) successful demonstration of key design principles and philosophy--BSCCO-2223/Ag (alloy) tape and double-pancake coil configuration--adopted for Insert #1 that will also be followed, and, if needed, refined in Phases 2 and 3 upon completion of Phase 1. Note that both areas are critical ingredients to achieve the ultimate goal of 1 GHz. "Although rated only at 450 MHz and to be operated for a brief period to generate NMR signals, this high-resolution LTS/HTS system should validate our basic design principles and philosophy to achieve the 1 GHz goal by December 2004. Because the original 500 unit at FBML was once the first high-resolution NMR magnet to clear the 500 MHz mark, perhaps it would be justly apt if its resurrection--a high-resolution LTS/HTS NMR magnet--becomes the first of its kind."

研究人员提出了一个三阶段的计划， 用于低温超导体温度超导插入线圈 核磁共振光谱仪的磁铁，以提高其 工作磁场强度为23.5特斯拉，磁场强度明显超过了 当前NMR磁体技术的限制，如他们的 摘要： “这个为期18个月的3阶段项目的第一阶段计划的具体目标是， 完成高分辨率LTS/HTS NMR磁体-可能是其第一个 在拟议的完成日期（2001年9月）， FBML现有的LTS背景磁铁，以及 在FBML设计和制造。这三个阶段的倡议提出，以实现 最终目标是在12月前实现52 mm RT孔高分辨率1 GHz NMR磁体 2004.我们认为，这一最终目标只有通过 顺利完成第一阶段和第二阶段。在每一阶段，LTS/HTS装置将 基于基本相同的设计原则和理念。1期 目标频率为450 MHz，第2阶段目标频率范围为700-800 MHz。 “第一阶段计划的意义在于两个方面：1）成功 运行高分辨率LTS/HTS NMR磁体; 2）成功演示 BSCCO-2223/Ag（合金）带和 双扁平线圈配置--用于插入件#1， 然后，如果需要，在第1阶段完成后，在第2阶段和第3阶段进行改进。 请注意，这两个方面都是实现1的最终目标的关键因素 GHz。 “虽然额定频率仅为450 MHz， 生成NMR信号，这种高分辨率LTS/HTS系统应该验证我们的 在12月前实现1 GHz目标的基本设计原则和理念 2004.因为FBML最初的500单元曾经是第一个高分辨率的 核磁共振磁铁清除500兆赫的标志，也许这将是公正的适当，如果它的 复活-高分辨率LTS/HTS NMR磁体-成为其第一个 kind. "