Thanks for all responses about the power stick of Gemini 300 magnet. Sorry
not provinding enough information of the magnet. Here is what I know:
the magnet is made by Varian about 10 years ago. It is a Varian built
magnet with an 60 days helium hold time and a 7 day nitrogen hold time (I
think - this one is several years old and I don't have the specifications
any more.) It is known as the R2D2 in the community. The drift rate was
probably 10 Hz/hr when it was new. I beleive that it is a narrow bore 51 mm
system. If I have more information I will keep posting more information
about this magnet. Thanks for your attention!
Qing Ning
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Qing Ning, Ph.D
NMR Specialist Analytical Service Lab
q-ning@nwu.edu Department of Chemistry
tel. 847-491-7080 Northwestern University
Fax 847-491-7713 2145 Sheridan Road
Evanston, IL 60208