[Esr-users] Cooling Hall B polarized target

[Christopher Keith]

Start cooling the target around noon today. Switched to warm return at 14:40. No change in gas purity monitor CCT60N23.

Chris

________________________________
From: Esr-users <esr-users-bounces at jlab.org> on behalf of Christopher Keith <ckeith at jlab.org>
Sent: Saturday, June 4, 2022 6:40 PM
To: esr-users at jlab.org <esr-users at jlab.org>
Subject: [Esr-users] Cooling Hall B polarized target

If all goes according to plan, I will start cooling the Hall B polarized target to 1 K tomorrow morning,  June 5.  I'll post follow-up messages before I start and when it's complete.

I'll be drawing a maximum of about 0.3 g/s of 4K LHe from the Hall B buffer dewar, and I'll closely monitor the ESR contamination signal CCT60N23.

Chris Keith
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