| ID |
Date |
Author |
Operational Mode |
Subject |
Text |
 |
|
127
|
Wed Jun 14 10:35:30 2006 |
Willy Andersson | Quench Recovery | Switched to series cooling. | Had system in //return cooling overnight with
small flow to keep power
leads cool. Switched to series mode about |
|
|
128
|
Wed Jun 14 16:27:01 2006 |
Willy Andersson | Quench Recovery | Energized solenoid | Powerleads appear stable. |
|
|
139
|
Thu Jul 20 11:01:09 2006 |
Willy Andersson | Quench Recovery | Opened up warm return valves CV151 and CV153 | Mu2 pressure was just about at trip point
due to trapped volume of helium
warming. So opened up warm returns to bleed |
|
|
140
|
Thu Jul 20 13:21:57 2006 |
Willy Andersson | Quench Recovery | started // warm return flow. | TIC121 was down to 27K
warm return valves were wide open
opened supply valves CV143 and CV146.
|
|
|
141
|
Thu Jul 20 13:27:21 2006 |
Willy Andersson | Quench Recovery | cold return mode continues... | cr_c1 and cr_12 are both at about 45K and
heading slowly down, so the
gamble of going to // cold return worked. |
|
|
142
|
Thu Jul 20 13:34:26 2006 |
Willy Andersson | Quench Recovery | cold return mode continues... | Even though cr_c1 and cr_c12 have begun to
tick down, cr_c7 and cr_c6 are
actually ticking up. This is probably a wave |
|
|
145
|
Fri Jul 21 17:18:19 2006 |
Willy Andersson | Quench Recovery | Opened HIC142 fully open | Power leads have flatlined but still building
LHe level. |
|
|
152
|
Wed Aug 9 06:44:58 2006 |
Willy Andersson | Quench Recovery | // cold mode cooling continues. | After restarting flow to the solenoid yesterday
in // cold return mode
TIC121 just refused to go lower than about |
|
|
153
|
Wed Aug 9 06:59:43 2006 |
Willy Andersson | Quench Recovery | more // cold return stuff | About 21:00 last night the solenoid temps
had not changed much, pretty well
flat lined. I guess my reducing CV155 stalled |
|
|
156
|
Thu Aug 10 16:33:11 2006 |
Willy Andersson | Quench Recovery | Flow to solenoid tripped on powerlead temperature. | Power lead temps were drifting up, tried to
tweak TIC121 and HIC141 to
unstall powerlead flow. Got quench. Restarted |
|
|
157
|
Thu Aug 10 20:26:09 2006 |
Willy Andersson | Quench Recovery | solenoid energized | Powerleads seem stable. |
|
|
159
|
Tue Aug 15 15:39:27 2006 |
Willy Andersson | Quench Recovery | switched to parallel cold return | Return flow temps from solenoid about 40K,
TIC121 at about 40K so switching
to //cold return.
|
|
|
161
|
Thu Aug 17 19:45:27 2006 |
Willy Andersson | Quench Recovery | switch to series cooling | Temps of flow returning from solenoid flat
lined at about 10K.
Gradually closed CV155.
|
|
|
163
|
Wed Oct 4 18:10:18 2006 |
Willy Andersson | Start Up | Quick check on system | System in good // warm return mode, temps
coming down nicely. BCP2 cryopump
does not look too healthy, temperature is |
|
|
167
|
Thu Oct 12 11:53:04 2006 |
Willy Andersson | Quench Recovery | Compressor trip, 09:50 this morning. | Main compressor tripped, refrigerator shutdown.
Checked with experimentors
and main control room, no indications of |
|
|
168
|
Thu Oct 12 19:54:10 2006 |
Willy Andersson | Quench Recovery | Energized solenoid. | Switched to series mode about 6 hours ago.
Cooling continued including
power leads until LHe level at about 50% |
|
|
171
|
Thu Oct 26 04:27:31 2006 |
Willy Andersson | Quench Recovery | Powerlead overtemp | 02:30 this morning got page from operations.
Looked at system online, appears that there
was a powerlead overtemp
|
|
|
172
|
Thu Oct 26 04:34:15 2006 |
Willy Andersson | Quench Recovery | Still in // cold return mode. | Leaving system cooling in // cold return mode,
cooldown rates still good.
Had flow on to powerleads since re-starting |
|
|
183
|
Wed Nov 15 17:05:49 2006 |
Willy Andersson | Quench Recovery | powerleads cold, energizing solenoid | Powerlead temperatures have bottomed out,
energizing solenoid to 300
amps, ramp rate 60. |
|
|
57
|
Sat Oct 9 22:50:26 2004 |
Other | | power leads warmed | At 10:30 PM Saturday, Donald Arseneau sees
power leads at
25K, having gone up for the previous 10 hours. |
|