 Fri Nov 12 16:54:50 2010, Doug Preddy, Normal Running, Solenoid ramped up
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Thu Nov 11 15:46:40 2010, Doug Preddy, Other, switched to parallel cold return
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At 14:45. |
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Mon Aug 9 14:27:12 2010, Doug Preddy, Shut Down, Helium plant shut down
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Mon Jun 7 09:24:47 2010, Doug Preddy, Quench Recovery, started flow to power leads
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Tue May 18 15:04:36 2010, Kevin Trithardt, Maintenance, Solenoid ramping up
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Thu May 13 14:37:13 2010, Doug Preddy, Quench Recovery, switching to series mode.
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Thu May 13 07:39:55 2010, Doug Preddy, Quench Recovery, solenoid quench last night
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Solenoid quenched on power lead temps last evening. I am recovering it in parallel cold return mode. C12~60K C1~50K. |
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Mon May 3 07:49:54 2010, Doug Preddy, Quench Recovery, Solenoid quench Saturday
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Solenoid quenched at ~13:30 Saturday. Kevin came in later in the day to recover it. System was in all around mode, no flow to solenoid. Discharge pressure went over 12 bar while starting flow and tripped the compresswor. After restart solenoid was cooling well.
Monday morning 7:30 I opened CV155 to increase the cooldown rate. |
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Fri Apr 9 16:07:28 2010, Doug Preddy, Start Up, flow to power leads started
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Fri Apr 9 07:34:55 2010, Doug Preddy, Quench Recovery, switched to parallel cold return
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Switched to parallel cold return at about 7:30 this morning
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Thu Apr 1 11:57:55 2010, Doug Preddy, Start Up, started flow to power leads
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Solenoid cold. Buffer tank pressure ~3psi, so Kevin will add a bottle of helium. Started flow to power leads at 11:45 |
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Mon Mar 29 09:25:52 2010, Kevin Trithardt, Start Up, Started cool down this morning
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Wed Mar 24 08:30:33 2010, Doug Preddy, Start Up, Start up
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Compressor started yesterday afternoon. Pumping out solenoid overnight. Cold box vacuum good. circulating helium to solenoid in Parallel warm mode, CV142 open. Purifier running. |
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Mon Oct 5 11:54:58 2009, Doug Preddy, Normal Running, Switched TIC121 into auto mode
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Tue Jul 14 15:28:36 2009, Doug Preddy, Quench Recovery, Solenoid ramped up
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The solenoid is cold and I have started to ramp up the power supply. Some slight ripples in the power leads, but they are dieing out. Liquid level is a lot more stable this time. |
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Fri Jul 10 01:10:59 2009, Doug Preddy, Quench Recovery, switch to parallel warm return
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Fri Jul 10 00:34:03 2009, Doug Preddy, Quench Recovery, solewnoid quench due to power bump
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Solenoid quench due to power bump caused by an airplane crash in Richmond at ~ 22:00. Compressor off. Water pump off. Restarted compressor at ~ 11:30. Cooling solenoid in parallel cold return mode by 12:15. |
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Wed May 27 15:01:34 2009, Doug Preddy, Quench Recovery, power leads
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Power leads are cold. There is still a small ripple. The power supply can be ramped up as soon as the ripples die out. |
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Wed May 27 13:37:22 2009, Doug Preddy, Quench Recovery, switch to series mode
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Switched to series mode at ~11:00. Built liquid to 55% by 13:30. Started flow to the power leads. |
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Wed May 27 08:06:00 2009, Doug Preddy, Quench Recovery, Solenoid quenched at 5:00
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The solenoid quenched at 5:00 this morning due to power lead temps. The temps started oscillating about 10 minutes before the trip. The compressor and the cold box stayed on. The flow to the solenoid was stopped.
The solenoid flow was started in parallel cold return at ~7:20. |