sPHENIX discussion of the superconducting solenoid

[Edward O'Brien <eobrien AT bnl.gov>]

    Hi Kin,
     The sPHENIX project has recognized the in situ
    mapping of the sPHENIX Magnet as being one of the most
    critical milestones in the sPHENIX installation.
    Everyone who contributed deserves congratulations on
    its successful completion. It was a big team effort from
    CAD, sPHENIX Physics, F&O and the CERN mapping group.
    Great work. Have a good weekend. Thanks.

    Ed

On 11/10/22 11:41 AM, Yip, Kin wrote:

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

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