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[[Sphenix-magnet-l] ] sPHENIX Magnet ramped down (10:07) for the last time this year

From: "Yip, Kin" <kinyip AT bnl.gov>
To: "sphenix-magnet-l AT lists.bnl.gov" <sphenix-magnet-l AT lists.bnl.gov>
Cc: "Lederle, Dewey L" <lederle AT bnl.gov>, "Sampson, Paul" <sampson AT bnl.gov>
Subject: [[Sphenix-magnet-l] ] sPHENIX Magnet ramped down (10:07) for the last time this year
Date: Tue, 22 Oct 2024 14:43:06 +0000

Hello,

After confirming with our sPHENIX colleagues, I started ramping down the
magnet at 08:39 this morning and was done
at 10:07 this morning. This is the final ramp-down for this year as we
finished the RHIC run yesterday and are in the shutdown period.

Earlier in the morning that I got a call at 5:23 am, there was a little
"crisis" that the Cryo Control Room was dealing with.
The vacuum was bad around 5 o'clock and the temperature rise was spreading in
the counter-clockwise direction to 4 o'clock ...
They called in vacuum group tech and finally it was declared to be resolved
before 7 am (by Ken Decker). So, I didn't need to ramp it down a couple
hours earlier 😅

By talking with the Cryo Control Room and earlier with other people, it seems
that they're fully aware of the nitrogen cooling (using E-lens compressor
etc.) in several days after we let the Magnet temperature drift up to
Nitrogen temperature.

Kin

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[[Sphenix-magnet-l] ] sPHENIX Magnet ramped down (10:07) for the last time this year, Yip, Kin, 10/22/2024