Dear group,
I have some questions about moving (and possibly refurbishing) old magnets.
We have 2 old NMR systems that we're considering moving into a different
room. The magnets are:
*600 MHz: installed in 1996 by Bruker, Magnex magnet, currently an
Avance III HD.
It has never been refurbished.
*500 MHz: installed in 1986 (it was a GE GN500, manufactured ca.
1984), currently
a DRX. It was refurbished once in 1993.
The magnets are both extremely stable. The boiloffs haven't changed one
bit since they were installed. Incidentally, both have cryoprobes and
are workhorse instruments for bio-NMR.
The move is basically optional. Some of the faculty here want to do it
because it would make things nicer for their research groups, but
nothing would be disrupted if they left the magnets where they are.
At the moment, 3 options are being considered:
1) Don't touch the magnets. Just leave them where they are.
2) Move the magnets into the other room.
3) Move the magnets into the other room, and refurbish them.
(If we move them, we will de-energize them and move them cold)
How advisable do you think options 2 and 3 are? Are there any opinions
about moving and refurbishing vs. just moving them? I know there's a
possibility that if you deenergize an old magnet, that it might not come
back to field. Does anyone have a good idea how likely that is?
Or a related question: if you have an NMR magnet that is 20+ years old
but that shows no signs of aging, and you have the money to refurbish it
- should you do it?
Thanks in advance, and I will post a summary of the responses.
-Robert
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Robert Peterson, Ph.D.
Facility Manager - NMR Technology Center
UCLA-DOE Institute for Genomics and Proteomics
UCLA Dept. of Chemistry and Biochemistry
phone: (310)825-1816
fax: (310)825-0982
peterson_at_mbi.ucla.edu
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Received on Wed Apr 27 2016 - 12:09:00 MST