sPHENIX discussion of the superconducting solenoid

[EdwardOBrien <eobrien AT bnl.gov>]

    Hi Kin,
     Thanks for the update. All preparations seem to be going well.  Does
    the rate of cooling ever change, or is it linear all of the way down?
    If it is linear then we have 18 days left to go.

     Ed

On 12/18/2017 5:10 PM, Yip, Kin wrote:

Hi,

 

I attach the latest screenshot of the Cryo HMI and you can see that the temperature sensors seem to be between 255-260 K.  The cool-down rate is

slightly faster than 0.6 K per hour.

 

--- Pablo Rosas is trying to finish his power supply test.   The last part should be the short-circuit (which he’s probably already started to set it up …

    I didn’t manage to catch him this late afternoon. )  

 

--- Frank Toldo/Paul Giannotti have connected all the strain gauge/linear pot cables and it seems that Frank just needs to finish all the termination

     tomorrow.

 

--- One of the strain gauge J cable has a deformed plug and Richard Meier has agreed to fix it, as he dealt with it before J 

 

--- Zeynep has moved her $40K PXIe in the 912 quench-detector Rack.  Frank has also helped provide us with power strip with long-enough cord.

 

Kin

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