Re: [AMMRL] Quench narrowly avoided? Filling small magnets connected to helium recovery

From: Spin-Doc <bert.heise_at_spin-doc.net>
Date: Thu, 12 Jun 2025 22:04:35 +0200
Hi Luke,

Sounds great! There’s only one practice I‘m not so sure I‘d be a fan of: closing the valves on other magnets before the helium refill of another…:

- if there’s a quench all check valves will close anyway and won’t let any helium
pressure into the other magnets (might be that a very small amount can pass before the
check valve has time to close). After the incident they will open again by themselves

- what you haven’t touched you can’t forget (especially during/after the upheaval
created by a quench that hopefully never happens). If you forget to re-open one of them
and your magnets don’t have an emergency blowoff valve you may have the next quench approaching fast…

Cheers
Bert


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Spin-Doc 
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Dr. rer. nat. Bert Heise
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Mail: bert.heise_at_spin-doc.net
Phone: +49-171-5135315

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--Apple-Mail-EAAB3430-69F7-43AE-BC6D-9188D73113CA-- Received on Thu Jun 12 2025 - 14:20:34 MST

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