| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
6790
|
Fri Jun 8 15:24:08 2012 |
steve | Update | VAC | RGA scan at day 276 and pressure plots |
|
|
|
6894
|
Fri Jun 29 11:02:00 2012 |
steve | Update | VAC | the vent is at 500 torr |
|
|
|
6895
|
Fri Jun 29 13:11:31 2012 |
steve | Update | VAC | 40m IFO at atm | The 4 hrs vent plot at 3 torr/min
rate.
Nitrogen was used from 1e-6 torr |
|
|
6897
|
Fri Jun 29 22:56:35 2012 |
Jamie | Update | VAC | input telescope beam clipping on Faraday | [Yuta, Koji, Jamie]
We went into ITMX chamber to inspect
the situation there. We looked for |
|
|
6906
|
Tue Jul 3 17:23:50 2012 |
steve | Update | VAC | pumpdown completed | Vacuum Normal State is reached in 9 hours.
CC1 = 2e-5 Torr
Aux dry pump #3 is still running. |
|
|
6929
|
Fri Jul 6 09:27:40 2012 |
steve | Update | VAC | 4 days at atm | I'm looking for some movement indicators
of the vent-pump down events.
|
|
|
6930
|
Fri Jul 6 09:52:35 2012 |
steve | Update | VAC | pump down hick up | I can not understand what really
happened here with CC1 gauge or there was
really a pressure glitch. |
|
|
6970
|
Thu Jul 12 16:27:04 2012 |
steve | Update | VAC | drypump changed | TP2 dry_pump was changed at intake
pressure 982 mTorr at 84,889 hrs This
seal hold up for one year. |
|
|
7044
|
Fri Jul 27 14:28:36 2012 |
steve | Update | VAC | cold cathode gauges | Our cold
cathode 423 gauges are 10 years old.
They get insulated by age and show no ionization |
|
|
7051
|
Mon Jul 30 15:49:16 2012 |
steve | Update | VAC | cc1 switched |
|
|
|
7056
|
Tue Jul 31 08:01:22 2012 |
steve | Update | VAC | cc1 switched |
|
|
|
7089
|
Mon Aug 6 10:53:32 2012 |
steve | Update | VAC | status: vauum normal |
The power outage did not have
any effect on the vacuum system. I |
|
|
7272
|
Fri Aug 24 16:03:39 2012 |
Steve | Update | VAC | Vacuum related work at atm | Vacuum related work at atmosphere:
Atm1, Check all chamber dog
clamps tightness with torque wrench, |
|
|
7278
|
Sun Aug 26 20:58:21 2012 |
Jenne | Update | VAC | Don't vent!!!! | [Koji, Jenne]
Steve, do not vent tomorrow morning!
We are still not prepared, and will not finish |
|
|
7293
|
Tue Aug 28 09:37:33 2012 |
Steve | Update | VAC | RGA scan at day 56 | RGA scan, Maglev pumping speed at
day 56
CC1 is dying. CC4 is real. |
|
|
7300
|
Tue Aug 28 17:59:03 2012 |
Jenne | Update | VAC | VENT: GO! | I have turned of the high voltage supplies
for PZT1 and PZT2. The OMC PZT high
voltage supplies were already off, since |
|
|
7306
|
Wed Aug 29 11:47:21 2012 |
ericq | Update | VAC | Venting | [Steve, Eric]
I've been helping Steve vent this
morning. The following things were done (from |
|
|
7307
|
Wed Aug 29 12:46:49 2012 |
Steve | Update | VAC | Vent completed in 4 hrs |
|
|
|
7321
|
Thu Aug 30 19:08:08 2012 |
Jenne | Update | VAC | Dogs on BS, ITM chambers checked | I tightened as many of the dog clamps on
the bottom of the BS, ITMX and ITMY chambers
as I could find. I used a torque wrench |
|
|
7327
|
Fri Aug 31 10:24:36 2012 |
Steve | Update | VAC | chamber dog clamps checked |
|
|
|
7342
|
Tue Sep 4 20:25:22 2012 |
jamie | Omnistructure | VAC | better in-air "lite" access connector needed | We really need something better to replace
the access connector when we're at air.
This tin foil tunnel crap is dumb. |
|
|
7343
|
Wed Sep 5 09:50:25 2012 |
Steve | Omnistructure | VAC | better in-air "lite" access connector needed |
|
|
|
7344
|
Wed Sep 5 10:50:15 2012 |
jamie | Omnistructure | VAC | better in-air "lite" access connector needed |
|
|
|
7345
|
Wed Sep 5 13:11:43 2012 |
jamie | Omnistructure | VAC | better in-air "lite" access connector needed |
|
|
|
7432
|
Mon Sep 24 16:59:31 2012 |
Jenne | Update | VAC | Doors on, ready to pump | [The 40m Family]
The access connector and all heavy
doors are back on. |
|
|
7434
|
Mon Sep 24 17:47:05 2012 |
Steve | Update | VAC | ready to pump | The IFO will be at atmosphere
overnight. The annuloses are pumped
down. The access connector jam nuts are tightened |
|
|
7438
|
Tue Sep 25 17:21:01 2012 |
Steve | Update | VAC | pumpdown completed | IFO P1= 1mTorr, CC1 =
5e-4 Torr. The IFO is ready for work.
Be free to open the shutter and turn on HV |
|
|
7441
|
Wed Sep 26 11:03:04 2012 |
Steve | Update | VAC | pumpdown completed | The new cold cathode gauge CC1 is
in place. We were at atmosphere for 28 days
......more later |
|
|
7454
|
Mon Oct 1 09:02:17 2012 |
Steve | Update | VAC | pumpdown reached vacuum normal |
|
|
|
7461
|
Tue Oct 2 09:13:16 2012 |
Steve | Update | VAC | RGA scan at day 7 |
|
|
|
7491
|
Fri Oct 5 14:40:55 2012 |
Steve | Update | VAC | RGA scan after power outage |
|
|
|
7545
|
Mon Oct 15 08:12:45 2012 |
Steve | Update | VAC | blank vac monitor | VME
crate blew its fuse and the fuse
housing is hard to access. |
|
|
7547
|
Mon Oct 15 13:07:51 2012 |
jamie | Update | VAC | vacuum VME crate broken, replaced, minor vacuum mayhem ensues | Steve and I managed to access the fuse
in the vacuum VME crate, but replacing it
did not bring it back up. We decided |
|
|
7549
|
Mon Oct 15 17:08:01 2012 |
Steve | Update | VAC | vacuum is back with some disabled valves |
|
|
|
7564
|
Wed Oct 17 08:04:31 2012 |
Steve | Update | VAC | Roughing pumps on for oil change | PR1, PR2 and RP3 turned on for warming
up for oil change. Oil changed with 3.2L
of MVT-19 |
|
|
7582
|
Fri Oct 19 16:45:39 2012 |
Steve | Update | VAC | vent has started |
|
|
|
7584
|
Fri Oct 19 19:26:42 2012 |
Jenne | Update | VAC | vent has started |
|
|
|
7587
|
Mon Oct 22 09:10:07 2012 |
Steve | Update | VAC | @750Torr |
|
|
|
7594
|
Tue Oct 23 08:45:00 2012 |
Steve | Update | VAC | vent day 3 |
|
|
|
7597
|
Tue Oct 23 16:18:03 2012 |
Steve | Update | VAC | Roughing pumps on for oil change |
|
|
|
7605
|
Wed Oct 24 09:15:12 2012 |
Steve | Update | VAC | vacuum rack 24V ps was current limited |
|
|
|
7669
|
Mon Nov 5 10:34:48 2012 |
Steve | Update | VAC | existing vacuum documents |
|
|
|
7696
|
Mon Nov 12 09:21:10 2012 |
Steve | Update | VAC | pumpdown has started | I'm looking for IOO steering mirror power
supplies. I found two so far: one at 1Y3
as Kepco + 75V and one at OMC_North |
|
|
7697
|
Mon Nov 12 16:52:03 2012 |
Steve | Update | VAC | pumpdown has completed | The pressure is CC1 3e-4 Torr at
8 hours of pumping. Status: vacuum
normal |
|
|
7703
|
Tue Nov 13 08:34:11 2012 |
Steve | Summary | VAC | pumpdown after 24days at atmosphere |
|
|
|
7753
|
Tue Nov 27 09:44:09 2012 |
Steve | Update | VAC | pumpdown at 15 days | It took 15 days to reach 1e-5 Torr
The RGA was turned on yesterday.
The rga scan plotting was not working. Den |
|
|
7849
|
Tue Dec 18 10:43:20 2012 |
Steve | Update | VAC | vent has completed | The 40m vacuum envelope is at atm
It took 4.5 hours at ~3 Torr/min speed. Atm1
|
|
|
7853
|
Tue Dec 18 16:37:40 2012 |
Steve | Update | VAC | last RGA scan before vent |
|
|
|
7856
|
Wed Dec 19 11:53:23 2012 |
Steve | Update | VAC | AC removed | Koji, Manasa, Jenne, Jamie, Bob and
Steve
Access connector removed this morning |
|
|
7914
|
Thu Jan 17 17:04:49 2013 |
Steve | Update | VAC | vac monitor screen changed | The COVAC_MONITOR.adl was changed. Ion
pump labeled as disconnected means: ion pump
controller power turned off and ion pump |
|