CRYO-FREE 4.7 ACTIVE-SHEILD ICR SPECTROMETER MAGNET

本项目的目标是研制一台4.7特斯拉无制冷剂高分辨率傅里叶变换质谱计主动屏蔽磁体样机。采用闭式循环制冷后，系统的运行成本和运行复杂性将显著降低。建议的磁体系统将是执行光谱分析的生物实验室的理想选择，当获取液体制冷剂的途径和时间受到限制时，或者实验室空间有限的地方。第二阶段的主要研究目标是建造、测试和评估一个全尺寸的4.7特斯拉FTMS无低温磁体系统。为了实现这一目标，低温磁学公司提出了一种技术方法，包括测试LHe中NbTi线圈在持续模式下的稳定性，以确保每个线圈的性能，然后将线圈与高T_c电流引线和失超保护系统组装在一起，并借助制冷机在无低温环境下测试完整的磁体。在第二阶段研究结束时，一个4.7T的有源屏蔽FTMS原型磁体将被开发出来并进行充分的测试。这一原型磁体将是第三阶段计划的卖点--无制冷剂4.7T有源屏蔽FTMS磁体系统的商业化。第一阶段和第二阶段开发的新技术将通过降低FTMS系统的运营成本和增加灵活性而产生巨大的商业影响。该项目第二阶段的成功完成将使高流动性、高分辨率的ICR-FTMS磁体进入市场。拟议的商业应用：消除对液体冷冻剂的需求将减少系统停机时间，提高操作员安全性，并降低ICR-FTMS生物研究实验室的运营成本。结合使用有源屏蔽消除杂散磁场，拟议的系统将重新定义已经快速增长的全球FTMS系统市场。

This project is aimed at developing a prototype 4.7 Tesla cryogen-free high resolution Fourier Transform Mass Spectrometer magnet with active- shielding. By using close-cycle refrigeration, system operating cost and the operating complexity will be reduced significantly. The proposed magnet system will be ideal for bio-laboratories performing spectrum analysis where and when access to liquid cryogen is limited, or where the laboratory space is limited. The primary Phase II research objective is to build, test and evaluate a full scale 4.7 Tesla FTMS cryogen-free magnet system. To achieve the objective, Cryomagnetics, Inc. proposes a technical approach that consists of testing the stability of NbTi coils in LHe under persistent mode operation to insure each coil's performance, and then assembling coils with high-Tc current leads and quench protection system and testing the complete magnet in cryogen-free environment with the aid of cryocooler. At the end of Phase II research, a full scale 4.7 T, active-shielded FTMS prototype magnet will have been developed and fully tested. This prototype magnet will be the selling point for Phase III program--the commercialization of cryogen-free 4.7 T active-shielded FTMS magnet system. The new technologies developed in Phase I and II will generate great commercial impact by reducing FTMS system operating cost and increasing flexibility. The successful completion of Phase II of this project will make high mobility, high resolution ICR-FTMS magnets available in the market. PROPOSED COMMERCIAL APPLICATIONS: The elimination of the need for liquid cryogens will reduce system down time, improve operator safety, and reduce operating costs in ICR-FTMS bio- research laboratories. Combined with the elimination of stray magnetic fields through the use of active shielding, the proposed system will redefine the already rapidly growing worldwide market for FTMS systems.