| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
3341
|
Sat Jul 31 14:59:33 2010 |
kiwamu | Update | VAC | Re: How to stop and start slow pumpdown | I stopped the pumping at 14:50 pm
because I was going back home. I did the |
|
|
3343
|
Sat Jul 31 22:35:01 2010 |
Koji | Update | VAC | Vac-P1 still 1.2mtorr | I resumed the pumping from 19:00.
Now the valve RV1 is full open. But
the pumping is really slow as we are using |
|
|
3344
|
Sun Aug 1 18:50:35 2010 |
Koji | Update | VAC | P1 = 0.48 torr | I resumed the pumping today. Now the pressure
is 0.48 torr. The pump was stopped.
|
|
|
3347
|
Mon Aug 2 10:26:15 2010 |
steve | Configuration | VAC | very slow pumpdown completed |
|
|
|
3611
|
Mon Sep 27 08:59:50 2010 |
steve | Configuration | VAC | slow vent has started | Blocked PSL output beam into IFO
Checked: HV at IOO & OMC are
off, jam nuts in position, |
|
|
3614
|
Tue Sep 28 00:07:45 2010 |
kiwamu | Configuration | VAC | Re: slow vent has started | (Koji, Yuta, Kiwamu)
|
|
|
3622
|
Wed Sep 29 16:56:36 2010 |
yuta | Update | VAC | 2 doors opened | (Steve, Koji, Joe, Kiwamu, Yuta)
Background:
The vent was started on Monday, |
|
|
3645
|
Mon Oct 4 19:48:00 2010 |
yuta | Update | VAC | several mirrors installed to ITMX/BS chamber | (Koji, Kiwamu, Yuta)
Lots of progress |
|
|
3654
|
Tue Oct 5 17:39:21 2010 |
steve | Configuration | VAC | west access connector removed | Kiwamu, Koji, Yutah, Rana, Jan and Steve
We removed the west access connector
this afternoon. |
|
|
3656
|
Tue Oct 5 21:22:46 2010 |
yuta | Update | VAC | green beam reached PSL table | Y |
|
|
3925
|
Mon Nov 15 16:09:44 2010 |
Jenne | Update | VAC | ETMX, ETMY, ITMY chambers opened | [Steve, Jenne, Suresh, Koji]
The remaining test mass chambers
have been opened, and have light doors in |
|
|
4059
|
Wed Dec 15 16:04:49 2010 |
steve | Configuration | VAC | vacuum valves found in default condition | This condition is created when we run out
of nitrogen that holds the valves in set
positions. The Maglev and other turbos are |
|
|
4083
|
Tue Dec 21 16:20:09 2010 |
steve | Configuration | VAC | pumpdown has started | Slow pumpdown of |
|
|
4084
|
Tue Dec 21 16:34:42 2010 |
kiwamu | Summary | VAC | All the test masses have been wiped | [Jenne and Kiwamu]
We wiped all the test masses with |
|
|
4088
|
Wed Dec 22 15:47:22 2010 |
Koji | Update | VAC | Tank closing procedure | [Jenne Kiwamu Joe Osamu Steve Koji]
Yesterday (21st), we closed the BSC
and the four testmass chambers. |
|
|
4089
|
Wed Dec 22 17:24:50 2010 |
steve | Configuration | VAC | slow pumpdown at 12 hours | We have reached 200 Torr at 12 hours of
slow pumping speed. Kiwamu stopped the pumping
for 11 hrs last night .and I restarted it |
|
|
4090
|
Wed Dec 22 21:38:47 2010 |
kiwamu | Configuration | VAC | Re:slow pumpdown at 12 hours | I stopped the pumping at 9:30 pm. Now
we are at 29 torr.
|
|
|
4094
|
Thu Dec 23 13:30:09 2010 |
steve | Configuration | VAC | slow pumpdown complete | The pump down continued this morning by
the removal of the butterfly valve. Two roughing
pumps were used to reach 500 mTorr |
|
|
4133
|
Tue Jan 11 11:39:45 2011 |
steve | Update | VAC | RGA is turned on | Joe updated the rga procedure in the wiki
and we turned on the filament. It will take
a few days to reach thermal equilibrium. |
|
|
4233
|
Mon Jan 31 16:12:11 2011 |
steve | Update | VAC | Vertex crane upgrade shorth coming |
|
|
|
4273
|
Fri Feb 11 09:27:03 2011 |
steve | Configuration | VAC | RGA scan | The RGA scan is normal at day 52 of this
pump down.
Light power BS 1064nm ~25mW, ETMX |
|
|
4391
|
Wed Mar 9 17:29:11 2011 |
steve | Summary | VAC | single O-ring protection | We have one single O-ring on the 40m vacuum
envelope. It is on the OOC west side, facing
the AP table. This O-ring has to be protected |
|
|
4654
|
Fri May 6 15:59:40 2011 |
steve | Update | VAC | TP3 fore pump replaced | Dry fore pump of TP3 replaced by brand
new Varian SH-110 at 1.1 Torr_75,208
hrs |
|
|
5016
|
Fri Jul 22 10:13:41 2011 |
steve | Update | VAC | RGA scan at day 213 | |
|
|
5017
|
Fri Jul 22 10:24:34 2011 |
steve | Update | VAC | pressure plot at day 213 | Dec 21, 2010 we pumped down the MARK4 rebuilt
40m-IFO and the malev has been pumping on
it since than |
|
|
5047
|
Wed Jul 27 15:38:01 2011 |
steve | Update | VAC | beam traps for vacuum | We have cleaned, baked, rga scaned traps
for vacuum. Thorlabs LB1 on 1" OD ss
posts and forks. The effective surface area |
|
|
5080
|
Mon Aug 1 08:52:37 2011 |
steve | Update | VAC | preparation to vent | Both arms locked easely around 1V transmited.
We should recenter oplevs. |
|
|
5104
|
Wed Aug 3 09:40:13 2011 |
steve | Update | VAC | vent | The vacuum system is coming up to atm.
The vent was started with slow N2 flow. The
PSL output is blocked 2 places on the table. |
|
|
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. |
|