 Wed Oct 13 08:17:00 2004, Experimentor, Start Up, cycling 142 when temp hit 10.68
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I tried cycling the valve twice -- at about 11:30 and again around 1:00,
trying both the buttons and the dial -- but it has had no effect on
the temperatures (aside from the transient spikes). That might be
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 Sun Oct 17 04:26:29 2004, Other, Start Up, cycling 142 when temp hit 10.68
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> I tried cycling the valve twice -- at about 11:30 and again around 1:00,
> trying both the buttons and the dial -- but it has had no effect on
> the temperatures (aside from the transient spikes). That might be
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Sun Oct 17 05:03:13 2004, Other, Start Up, Cycle valve after oscillations begin
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(Sat night/Sun AM) Helium temperature started oscillating, so
powered off magnet (precautionary) and cycled valve 142 (at 04:12).
Small oscillations begin almost immediately, so close and open
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Wed Oct 20 09:38:17 2004, Doug Preddy, Start Up, restarting system
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Solenoid tripped off Monday morning due to high compressor pressure.
Regenerated purifier on Tuesday. Started compressor at 9:00 this morning. |
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Thu Oct 21 07:16:35 2004, Doug Preddy, Start Up, switched to parallel cold return
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Thu Oct 21 15:41:29 2004, Doug Preddy, Start Up, switched to series mode
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Fri Oct 22 09:15:06 2004, Doug Preddy, Start Up, started flow to power leads
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| Started flow to power leads HIC142 at 0.8. |
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Wed Jun 1 08:23:19 2005, Doug Preddy, Start Up, start up notes
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The solenoid was pumped out Monday and yesterday after the quads just
downstream of the solenoid were put back in place. The quad just
downstream of the solenoid was remove to replace two coils on it.
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Wed Nov 2 10:17:27 2005, Willy Andersson, Start Up, M9B helium refrigerator and solenoid cooldown
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Started M9B MYCOM helium compressor circulating helium through system last
Friday. Right hand purifier was regenerated previously, LN2 fill system
started and flow started from buffer through purifier to low pressure
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Tue May 23 08:44:28 2006, Doug Preddy, Start Up, Started turbines
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Solenoid and cold box were pumped out last Tuesday. Cold box roughing pump
initially would not start. had to retighten all wires on the contactor in
the Sulzer control panel (RP900).
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Thu May 25 07:34:18 2006, Doug Preddy, Start Up, switched to parallel cold return
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| switched to parallel cold return |
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Fri May 26 07:29:54 2006, Doug Preddy, Start Up, CV155 closed
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CV155 closed.
Temps about 15K |
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Fri May 26 08:45:38 2006, Doug Preddy, Start Up, Changed to series mode
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Changed to series mode.
Liquid level building. |
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Fri May 26 10:03:03 2006, Doug Preddy, Start Up, Started flow to power leads
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Started flow to power leads.
Liquid level 15% |
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Fri May 26 14:34:24 2006, Doug Preddy, Start Up, Ready to run
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Solenoid is cold, liquid level is 35%, power leads cold and seem stable.
Added one bottle helium to buffer tank. Pressure is 7 psi.. |
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Wed Oct 4 07:29:04 2006, Doug Preddy, Start Up, Starting cool down
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Started compressor yesterday with flow through the purifier overnight.
Starting tubines this morning in parallel warm return |
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Wed Oct 4 18:10:18 2006, Willy Andersson, Start Up, Quick check on system
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System in good // warm return mode, temps coming down nicely. BCP2 cryopump
does not look too healthy, temperature is just over 20K, very close to low
set point.
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Thu Oct 5 10:26:26 2006, Doug Preddy, Start Up, switched to parallel cold return
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Thu Oct 5 11:51:53 2006, Doug Preddy, Start Up, Adde 2 bottles UHP Helium
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| Valved off purifiers, but left LN2 on. |
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Thu Oct 5 14:53:54 2006, Doug Preddy, Start Up, Switched to series mode
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