sPHENIX discussion of the superconducting solenoid

[John Haggerty <haggerty AT bnl.gov>]

I poked around the documentation on operating the BaBar solenoid, and 
according to BaBar's procedures:

> https://www.slac.stanford.edu/grp/ad/op/solnramp.html

they ramped at about 130 A/s, so a ramp to full operating current took 
them about 35 min.  It seems to me that would be the same for us.

One of the papers says recovery from a quench took them about 5 hours, 
that presumably depends on the refrigerator, I don't know how to 
calculate that.

The experts should correct me if I misunderstand.

--
John Haggerty
email: haggerty AT bnl.gov
cell: 631 741 3358