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The pulse tubes are really loud. We've wrapped the helium lines in sound absorbing foam, and we have a cage around the top of the cryostat also lined with foam, but it's still pretty loud.

To make this an interesting physics question I ask: how is the sound getting from the mechanism to my ears? Does the sound travel through the support frame? Through the helium lines?

Given the transduction channel, is there an effective way to reduce the noise?

DanielSank
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1 Answers1

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I'm afraid we've found no real solution to this problem. I think the noise propagates through the support frame, and sound proofing doesn't help very much. I think your best bet is either noise cancelling headphones or remote desktop as much as possible. But neither solution will help other people who may be in the same lab.

NLambert
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