| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
5105
|
Wed Aug 3 11:34:59 2011 |
kiwamu | Update | VAC | Re: vent | An
important rule during the in-vac work :
|
|
|
5111
|
Wed Aug 3 16:18:30 2011 |
steve | Update | VAC | vent is almost finished | P1 at 750 Torr, Vent valve VV1 is
left open to atm. It will reach equilibrium
in an hour. The PSL power is not turned down |
|
|
5142
|
Mon Aug 8 15:52:39 2011 |
steve | Update | VAC | back ground rga scan | The RGA region is beeing monitored during
the vent. This will tell us how clean the
RGA itself is. |
|
|
5159
|
Tue Aug 9 16:54:47 2011 |
steve | Update | VAC | scratch on vac door | Jenne found a big scratch on the north
vac door of ITMY. Fortunately it does not
reach the inner annulos 0 -ring seal. |
|
|
5180
|
Wed Aug 10 22:47:22 2011 |
rana | Summary | VAC | Vacuum Workstation (linux3) re-activated | For some reason the workstation at the
vac rack was off and unplugged. Nicole and
I plugged its power back in to the EX rack. |
|
|
5276
|
Mon Aug 22 11:40:08 2011 |
steve | Update | VAC | cranes checked | Cranes are checked and they are ready
for lifting. At the east end will use the
manual Genei-lift to put door on. |
|
|
5289
|
Tue Aug 23 16:23:33 2011 |
Jenne | Update | VAC | Access connector in place | [Steve, Bob, Jamie, Kiwamu, Valera, Jenne]
The access connector is now in place,
in preparation for pump-down. Tomorrow |
|
|
5303
|
Thu Aug 25 17:14:49 2011 |
steve | Update | VAC | clean room fashion changes | Jamie is modeling our next generation
in-vac
& clean room bonny suit that Jenne |
|
|
5331
|
Thu Sep 1 11:03:22 2011 |
steve | Update | VAC | back ground rga scan | The RGA back ground at day 29 of this vent. |
|
|
5354
|
Wed Sep 7 00:47:51 2011 |
Jenne | Update | VAC | PUMP is a GO! | Steve and Jamie: After Jamie checks
the ITM free swingings, |
|
|
5357
|
Wed Sep 7 12:03:49 2011 |
steve | Update | VAC | Pump down has started | Jamie and Steve
We closed ITMX and ITMY chambers
and started pumping around 11am |
|
|
5361
|
Wed Sep 7 18:19:37 2011 |
steve | HowTo | VAC | stop pump down for overnight |
|
|
|
5363
|
Wed Sep 7 21:45:16 2011 |
kiwamu | Update | VAC | pump stopped. Pressure is at 450 mtorr | I stopped puming at 9:30 PM and the pressure
in P1 is at 450 mtorr.
I followed exactly he procedure that |
|
|
5365
|
Thu Sep 8 10:50:44 2011 |
steve | Update | VAC | pumpdown #71 comleted | Vacuum status: " vacuum normal"
CC1 pressure 5e-5 Torr
Slow roughing through butterfly valve |
|
|
5497
|
Wed Sep 21 11:35:07 2011 |
steve | Update | VAC | RGA scan | RGA scan with maglev pumping speed at day
14 of the pump down.
The larger inserted box contains |
|
|
5529
|
Fri Sep 23 16:25:01 2011 |
steve | Update | VAC | vac rack UPS battery replaced | APC Smart -UPS 2200 model: SUA2200RM2U
batteries were replaced by compatible
RBC43, 8x 12V5A |
|
|
5590
|
Fri Sep 30 18:35:42 2011 |
steve, kiwamu | Update | VAC | vacuum set for poweroutage | We did the following:
1, closed V1, VM1, annuloses:
VASE, VASV, VABS, VAEV, VAEE and VA6 |
|
|
5599
|
Mon Oct 3 08:38:21 2011 |
steve | Summary | VAC | Recovery from the power shutdown is completed |
I failed to start Rana's favorit
anciant desktop computer at the vac rack. |
|
|
5662
|
Thu Oct 13 21:40:59 2011 |
rana | Summary | VAC | Recovery from the power shutdown is completed | As it turns out Steve is not crazy
in this particular instance: the vacuum computer,
linux3 , has some issues. I can login just |
|
|
5759
|
Fri Oct 28 18:33:59 2011 |
steve | Update | VAC | leaking nitrogen line fixed | I was lucky to notice that the nitrogen
supply line to the vacuum valves was leaking.
Closed ALL valves. Open supply line to atm. |
|
|
5767
|
Mon Oct 31 08:55:19 2011 |
steve | Update | VAC | pressure plot at day 53 |
|
|
|
5887
|
Mon Nov 14 15:46:14 2011 |
steve | Update | VAC | TP2's forepump changed | The foreline pressure of TP2 was 1.4 Torr
this morning. This drypump worked well for
ten months. |
|
|
5950
|
Fri Nov 18 16:37:14 2011 |
steve | Update | VAC | preparing for ac power interruption | The vacuum is ready for no AC power for
1 hr on Sunday morning at 10am
|
|
|
5962
|
Sun Nov 20 13:51:54 2011 |
steve | Update | VAC | vacuum is back up after ac interruption | State condition: Vac Normal,
CC1 ~8e-6 Torr
The IFO pressure peaked at |
|
|
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 |
|