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How do I configure a helium recovery system that won't perturb my magnet's stability?

I'm concerned that just hooking up a hose that connects the helium exhaust of all our magnets to a community recovery system shared with EPR and Physics labs is going to lead to pressure fluctuations that will compromise our magnets' stability, specifically its lineshape stability.

I know we should have one-way valves in place, but well before I arrived our engineer removed the Bruker one-way valve from the magnet and instead placed a more industrial-looking one-way valve at the manifold on the wall.

My main question is whether we need to purchase a manostat to enhance stability. They cost ~$10K, which isn't a trivial chunk of our maintenance budget.

I'm open to any suggestions.


asked Dec 15 '09 at 05:10

jkurutz's gravatar image


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Here is what I found on the AMMRL archive (ammrl login and password applies). These are summaries from different years: 1997, 2001 and 2007. The posts also have some information on who has such systems.

Pressure maintenance does seem to be a concern.


answered Dec 15 '09 at 10:57

Evgeny%20Fadeev's gravatar image

Evgeny Fadeev

updated Dec 15 '09 at 11:55

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