sPHENIX discussion of the superconducting solenoid

["Yip, Kin" <kinyip AT bnl.gov>]

Hi,

Of course, thanks also go to Eric Mannel (for two midnight-8 am shifts) and John Haggerty for many shifts, including one 16-hour one.   John seems to be calm under whatever situation ... and I've been trying to steal some calmness from him (in addition to all the wisdom).  

But I seem to sense that it's not easy to find volunteers from sPHENIX Collaboration to do shifts at BNL 🤔 

Kin

---

From: sPHENIX-magnet-l <sphenix-magnet-l-bounces AT lists.bnl.gov> on behalf of Yip, Kin <kinyip AT bnl.gov>
Sent: Thursday, November 10, 2022 11:41 AM
To: sphenix-magnet-l AT lists.bnl.gov <sphenix-magnet-l AT lists.bnl.gov>
Cc: Michnoff, Robert J <michnoff AT bnl.gov>; Chan, David <dchan AT bnl.gov>; Albanese, Marianna <malbanese AT bnl.gov>
Subject: [Sphenix-magnet-l] Magnet Mapping finally completed successfully !

 

Hi,

The last reading of our mapping reading (10 cm, 180 deg.) at 10:46 am --- this morning Nov. 10 --- for the (last) half-field ~10 hour

run (actually 9 hour and 9 minutes).   After confirming with the CERN colleagues (Raphael and Francois), I started ramping down

before 10:51 am. I did the fast discharge at 11:15 am so that CAS and Frank Toldo can lock out the power supply and start opening

the doors.

The plan is to help the CERN team to take out the mapper components and pack them out. 

On Monday, Pablo Rosas and his CAS colleagues will have one day to further test the Power Supply/Magnet.

I was quite nervous in the last few hours, the last hour ... last few minutes.  What if something went wrong ?! ... 🙁   

At the end, the Magnet and Power Supply and the quench detector NEVER failed since the CERN Mapper group has arrived !

Though the CERN mapper have given us a few problems during mapping, the CERN colleagues (with the help of our sPHENIX

technicians and CAS to LOTO power supply and open/close the pole-tip doors) have patiently dealt with and solved each problem,

during day, at night, in the weekend etc.   I am glad that we have a happy ending and this long weekend of mine will be very relaxed. 😀

Kin

---

From: sPHENIX-magnet-l <sphenix-magnet-l-bounces AT lists.bnl.gov> on behalf of Yip, Kin <kinyip AT bnl.gov>
Sent: Thursday, November 10, 2022 11:41 AM
To: sphenix-magnet-l AT lists.bnl.gov <sphenix-magnet-l AT lists.bnl.gov>
Cc: Michnoff, Robert J <michnoff AT bnl.gov>; Chan, David <dchan AT bnl.gov>; Albanese, Marianna <malbanese AT bnl.gov>
Subject: [Sphenix-magnet-l] Magnet Mapping finally completed successfully !

 

Hi,

The last reading of our mapping reading (10 cm, 180 deg.) at 10:46 am --- this morning Nov. 10 --- for the (last) half-field ~10 hour

run (actually 9 hour and 9 minutes).   After confirming with the CERN colleagues (Raphael and Francois), I started ramping down

before 10:51 am. I did the fast discharge at 11:15 am so that CAS and Frank Toldo can lock out the power supply and start opening

the doors.

The plan is to help the CERN team to take out the mapper components and pack them out. 

On Monday, Pablo Rosas and his CAS colleagues will have one day to further test the Power Supply/Magnet.

I was quite nervous in the last few hours, the last hour ... last few minutes.  What if something went wrong ?! ... 🙁   

At the end, the Magnet and Power Supply and the quench detector NEVER failed since the CERN Mapper group has arrived !

Though the CERN mapper have given us a few problems during mapping, the CERN colleagues (with the help of our sPHENIX

technicians and CAS to LOTO power supply and open/close the pole-tip doors) have patiently dealt with and solved each problem,

during day, at night, in the weekend etc.   I am glad that we have a happy ending and this long weekend of mine will be very relaxed. 😀

Kin