User name weinstein
Log entry time 21:21:25 on October28,2002
Entry number 89225
This entry is a followup to: 89223
keyword=magnet ramp problem solved
19:00 noticed that Q1left is ramping MUCH too slowly (~8 hours to reach full current)
19:10 sweep hall anyway, Scott will work on magnet in controlled access
19:55 sweep complete
Scott tried manual magnet ramping - does not ramp any faster
still gives the error message 'Magnet mismatch'
He's got more stuff to try but he's not very optimistic.
20:45 problem solved by rebooting the Q1 L&R IOC
Scot Spiegel - I Swapped the programmable ramp board in the Left Q1 Danfysik P/S. However, this did not work. Returned P/S to orig. configuration.
I thought it might be a communications problem and decided to cycle power on
I.O.C. HA48 located in personnal passageway. I set both Q1's amps to ZERO and let all magnet energy dump. Then reset I.O.C. HA48 (designated IOC for Q1's and Big Byte power supply). It took about 2 min. to start up and gui's to return. I reset the momentums for Q1's on Hall A General Tools control screen. The ramp rate was corrected and operated normally.