sPHENIX discussion of the superconducting solenoid

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

Many thanks to Roberto !   Below is his status report and prediction J  

 

Kin

 

From: Than, Yatming (Roberto)
Sent: Friday, February 19, 2016 7:00 PM
To: Yip, Kin <kinyip AT bnl.gov>; Talty, Patrick <talty AT bnl.gov>; Masi Jr, Leonard <masi AT bnl.gov>; Orfin, Paul <porfin AT bnl.gov>; Warkentien, Andreas F <andyw AT bnl.gov>; Sardzinski, Mark A <sardzinski AT bnl.gov>; Tallerico, Thomas N <tallerico AT bnl.gov>; Van Kuik, Brian <vankuik AT bnl.gov>; Meier, Richard <remeier AT bnl.gov>
Subject: sPHENIX Update

 

Kin,

 

Reassembled and leak checked turbo pump A side.

Both Turbos are pumping on insulating vacuum. Vacuum is at 2.2E-5Torr range. valves or hardwired open.

Some more trouble shooting to be done to get vacuum valves to work, PLC logic to be reviewed.

 

Cycled valves.

When activating 3311 on screen 3312 moves.

When activating 3312 on screen 3312 moves.

The others are working one on one.

 

PT3337 is reading at terminal box at 4.9 mA on a 300 psia range, so 15 psia, which is correct. Showing 0.00 on screen.

The other PT on the RTP side we need to check whether they are reading.

 

Flowmeters to be checked.

We will flow gas through on Monday to see if we are getting reading on screen.

 

 

Pumped and purged ERL piping side.

 

Monday:

Purge 1660S and lubricate expander bearings

Put Sullair on Domestic water and start compressor system.

Flow warm gas through system to test flow meters and control valve actuation on PID loops.

Resolve any PLC logic issue and restart turbo pumps on PLC logic.

Put leak detector back on see monitor leak

 

Tuesday

Resolve any remaining controls issue

Open LN2 supply main valve and start cooldown LN2 gas cooler and start cooldown of magnet.

Restart 1660s

 

Wednesday

Most likely Start of Cooldown unless we were able to get everything done Tuesday.

 

 

Roberto