sphenix-magnet-l AT lists.bnl.gov

Subject: sPHENIX discussion of the superconducting solenoid

List archive

[Sphenix-magnet-l] 6-hour down time ... 28 more hours to go for the 44-hour mapping

From: "Yip, Kin" <kinyip AT bnl.gov>
To: "sphenix-magnet-l AT lists.bnl.gov" <sphenix-magnet-l AT lists.bnl.gov>
Cc: "Michnoff, Robert J" <michnoff AT bnl.gov>, "Albanese, Marianna" <malbanese AT bnl.gov>
Subject: [Sphenix-magnet-l] 6-hour down time ... 28 more hours to go for the 44-hour mapping
Date: Tue, 8 Nov 2022 13:16:56 +0000

Hi,

Checking the outputFile.txt, the mapping stopped at 17:11 yesterday afternoon. I received a call from John ... and soon CERN Team determined that it's due to a blown fuse.

( Nicola told us that he's supposed to use a 2 A fuse but during the 10-hour+ works on Sunday night, he forgot and used a spare board with 500 mA fuse.... )

I started a slow ramp-down from home and drove in ...John called CAS and Frank Toldo (who called Jeff and Aaron) ...It's a delay and the pole-tip door opening and close took time.

After CERN Team fixed and tested a bit, and the door was closed and LOTO was taken off again, we ramped the Magnet from 9:33 pm to 11:20 pm or about. The mapping started

at 11:21 pm, and it's working well so far.

We lost ~6 hours and this 44-hour run should end at around 12 pm tomorrow (assuming nothing goes wrong). And we still hope to do a 10-hour run at half-field.

Kin

[Sphenix-magnet-l] 6-hour down time ... 28 more hours to go for the 44-hour mapping, Yip, Kin, 11/08/2022