The development of a cryogen-free, actively-shielded 7.0 T high-resolution superconducting magnet for Ion Cyclotron Resonance Fourier Transform Mass Spectrometry (ICR-FTMS) will significantly reduce system operating costs and simplify operation. Bio-scientists and genetic researchers rely more and more on ICR-FTMS. The proposed FTMS actively-shielded magnet system will have many technological merits: ultra high resolution, low system operating costs (no cryogen refilling will be required to operate the system), user-friendliness (using closed cycle refrigeration, CCR, the magnet portion of the spectrometer becomes almost maintenance free), compact size (due to the active shielding, the system can fit into a small laboratory, and the cryostat will be much smaller since no cryogen storage volume is necessary), flexibility and mobility (no cryogen requirement means problems with cryogen access and availability will no longer lose sitting limitations). This study will focus on improving magnet stability issues such as temporal field stability in persistent mode, minimizing vibrational effects related to the cryo-cooler, and the robustness of the system in the event of a lower failure. Other areas that will be considered include improving the conduction-cooling system and cryostat, design optimization of the magnet (including field homogeneity, shielding, and stress analyses), design of quench protection circuits, building a model coil to improve cooling capabilities, and generation of a complete engineering design for an actively-shielded cryogen-free 7.0 T magnet system. A model coil will be tested using a cryo-cooler and cryostat that are already on site. Upon the whole coil reaching the equilibrium temperature of 4.2 K, the coil will be charged slowly to its designed operation current, then the persistent switch will be locked. This test setup can measure several key issues, which will help design the 7.0 T magnet systems.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Small Business Innovation Research Grants (SBIR) - Phase I (R43)
Project #
1R43RR019178-01
Application #
6741788
Study Section
Special Emphasis Panel (ZRG1-SSS-7 (10))
Program Officer
Friedman, Fred K
Project Start
2004-02-01
Project End
2004-07-31
Budget Start
2004-02-01
Budget End
2004-07-31
Support Year
1
Fiscal Year
2004
Total Cost
$81,316
Indirect Cost
Name
Cryomagnetics, Inc.
Department
Type
DUNS #
City
Oak Ridge
State
TN
Country
United States
Zip Code
37830