| ID |
Date |
Author |
Operational Mode |
Subject |
Text |
 |
|
77
|
Thu Nov 4 13:33:49 2004 |
Doug Preddy | Normal Running | Power supply problems | Last night the power supply was ramping up
at a very slow rate. This
morning it was energized,but with no current |
|
|
87
|
Mon Nov 29 09:28:16 2004 |
Doug Preddy | Normal Running | Buffer tank empty | Came down to check on system. CV211 was fully
open, trying to charge the
system. Ripples on LHe in and PL neg. CV141 |
|
|
88
|
Wed Dec 1 12:55:56 2004 |
Doug Preddy | Normal Running | added one bottle helium gas | buffer tank pressure is up to 6.5 psi. |
|
|
89
|
Thu Dec 2 10:51:16 2004 |
Doug Preddy | Normal Running | power lead ripple | Ripples got worse overnight.LHe in 10.3-11.7,
PL Neg 8.0-8.7. Flows <200mm.
cycled CV142. Flows 240mm. LHe in 10.3-11.3 |
|
|
90
|
Sun Dec 5 11:15:24 2004 |
Doug Preddy | Normal Running | more ripples | I loked at the power lead temps this morning.
LHe_in 10.4-12.0 PL-Neg 8.0-
9.0 PL-Pos 9.8-10.4. Flows down to 160mm. |
|
|
102
|
Tue Jun 14 18:48:14 2005 |
Experimentor | Normal Running | Power bump at 18:40 | Solenoid tripped on a power bump at 18:40
Tuesday
-- Donald Arseneau |
|
|
109
|
Sun Aug 14 10:03:13 2005 |
Willy Andersson | Normal Running | System stable | No experiment running in M9B.
Solenoid current is zero and power supply |
|
|
114
|
Tue Nov 15 07:25:10 2005 |
Doug Preddy | Normal Running | power supply problem | Saturday November 12 the solenoid power supply
ramped itself down to zero.
It would not ramp up unless the ramp rate |
|
|
123
|
Tue May 30 14:36:41 2006 |
Doug Preddy | Normal Running | power leads warming | power leads warming. closed HIC 142, then
re-opened. temps falling |
|
|
129
|
Fri Jun 16 08:12:04 2006 |
Doug Preddy | Normal Running | LI108 indicates high on EPICS screen | LI108 indicates high on EPICS screen (150%)
Controller shows ~64% |
|
|
130
|
Fri Jun 30 11:13:00 2006 |
Doug Preddy | Normal Running | E-log is back up and running | I would have made an entry when it died, but----- |
|
|
131
|
Fri Jun 30 11:17:57 2006 |
Doug Preddy | Normal Running | Solenoid recovered | Tuesday night. June 27, 2006, the solenoid
quenched for no apparent
reason. It was restarted Wednesday morning. |
|
|
133
|
Thu Jul 6 15:00:15 2006 |
Doug Preddy | Normal Running | test | |
|
|
134
|
Thu Jul 6 15:04:17 2006 |
Doug Preddy | Normal Running | test | test |
|
|
155
|
Thu Aug 10 08:33:44 2006 |
Doug Preddy | Normal Running | Running low on helium | Temperture okay, but there are fluctuation
in the power leads. PIC229 is
trying to charge. The buffer tank pressure |
|
|
170
|
Sun Oct 15 07:09:41 2006 |
Other | Normal Running | cryopump bcp2 trip | Donald Arseneau reporting
Not really solenoid realated, but FYI...
|
|
|
179
|
Fri Nov 3 12:09:51 2006 |
Doug Preddy | Normal Running | Fine tuning | The power lead temperatures have been climbing
at a rate of ~ 0.02K very 8
hours. The negative lead started to show |
|
|
180
|
Tue Nov 7 10:35:32 2006 |
Doug Preddy | Normal Running | Maintenance day | I ramped down the solenoid power suplly and
shut off flow to the power
leads. I will allow them to warm up and (hopefully) |
|
|
191
|
Fri Apr 27 10:10:07 2007 |
Doug Preddy | Normal Running | Solenoid Cold | Solenoid cold, power leads cold. Alarm handler
started. |
|
|
194
|
Mon Apr 30 09:30:26 2007 |
Doug Preddy | Normal Running | problems over weekend | The PLC Limit switch power supply was tripped
off on Saturday. I came in
and reset it and restarted all the vacuum |
|