| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14066
|
Fri Jul 13 16:26:52 2018 |
Steve | Update | VAC | Vent 80 is completing... | Steve and Aaron,
6 hrs vent is reaching equlibrium
to room air. It took 3 and a half instrument |
|
|
14073
|
Mon Jul 16 15:07:19 2018 |
Koji | Summary | VAC | Oven C vent | [Steve Koji]
- Attachment1: Removed the thermal
cap. Checked the temperature of the oven. |
|
|
14074
|
Mon Jul 16 18:12:00 2018 |
Koji | Update | VAC | Adding a manual gate valve between TP1 and V1/VM2 | [Steve Koji]
We are in the process of adding
a manual gate valve between TP1 (Osaka Maglev) |
|
|
14079
|
Tue Jul 17 18:16:38 2018 |
Steve | Summary | VAC | pumpdown 81 at 6 hrs | Precondition: 4 days at atm.
Atm5
HEPA tent used during the vent |
6x |
|
14080
|
Tue Jul 17 22:25:41 2018 |
Koji | Summary | VAC | pumpdown 81 at 6 hrs | 10:20PM
Opened VM2 to pump down
the RGA section with TP1
Stopped |
|
|
14082
|
Wed Jul 18 12:49:08 2018 |
Steve | Summary | VAC | pumpdown 81 at 6 +4.5hrs | The manual gate valve scan was clean. Atm1
TP1 was pumping on it overnight.
|
|
|
14083
|
Wed Jul 18 17:36:50 2018 |
Steve | Summary | VAC | pumpdown 81 at 6 +9 hrs completed | IFO P1 6e-4 Torr, manual gate valve
is fully open
The annuloses will be pumped down |
|
|
14085
|
Thu Jul 19 01:56:25 2018 |
gautam | Summary | VAC | AUX pump shutdown | [koji,
gautam]
Per Steve's instructions, we |
|
|
14087
|
Thu Jul 19 11:01:03 2018 |
Steve | Summary | VAC | pd81 @ 2e-5 Torr | Cold cathode gauge just turned on. |
|
|
14088
|
Thu Jul 19 13:35:30 2018 |
Steve | Summary | VAC | annuloses pumped | Roughing down the annuloses required closing
V1 for 13 minutes
IFO is 2.2e-5 Torr |
|
|
14098
|
Mon Jul 23 09:58:52 2018 |
Steve | Summary | VAC | RGA scan at day 6 |
|
|
|
14137
|
Mon Aug 6 09:34:02 2018 |
Steve | Update | VAC | RGA scan at day 20 |
|
|
|
14167
|
Thu Aug 16 07:50:28 2018 |
Steve | Update | VAC | pumpdown 81 at day 30 |
|
|
|
14168
|
Thu Aug 16 14:48:14 2018 |
Steve | Update | VAC | why do we need a root pump? |
Basic Pump Throughput Concepts
What
is Pump Throughput?
The manufacturer |
6x |
|
14183
|
Fri Aug 24 10:51:23 2018 |
Steve | Update | VAC | pumpdown 81 at day 38 |
|
|
|
14189
|
Wed Aug 29 09:56:00 2018 |
Steve | Update | VAC | Maglev controller needs service | TP-1 Osaka maglev controller [
model TCO10M, ser V3F04J07 ]
needs maintenance. Alarm led on indicating |
|
|
14207
|
Fri Sep 21 16:51:43 2018 |
gautam | Update | VAC | c1vac1 is unresponsive | Steve pointed out that some of the vacuum
MEDM screen fields were reporting "NO
COMM". Koji confirmed that this is a |
|
|
14215
|
Mon Sep 24 15:06:10 2018 |
gautam | Update | VAC | c1vac1 reboot + TP1 controller replacement | [steve, gautam]
Following the procedure in this |
|
|
14217
|
Wed Sep 26 10:07:16 2018 |
Steve | Update | VAC | why reboot c1vac1 | Precondition: c1vac1 & c1vac2 all LED
warning lights green [ atm3 ], the only error
message is in the gauge readings NO COMM, |
|
|
14229
|
Thu Oct 4 08:25:50 2018 |
Steve | Update | VAC | rga scan pd81 at day 78 |
|
|
|
14244
|
Fri Oct 12 08:27:05 2018 |
Steve | Update | VAC | drypump | Gautam and Steve,
Our TP3 drypump seal is at 360
mT [0.25A load on small turbo] after |
|
|
14247
|
Fri Oct 12 17:37:03 2018 |
Steve | Update | VAC | pressure gauge choices | We want to measure the pressure gradient
in the 40m IFO
Our old MKS cold cathodes are out |
|
|
14256
|
Mon Oct 15 13:59:42 2018 |
Steve | Update | VAC | drypump replaced | Steve & Bob,
Bob removed the head cover from
the housing to inspect the condition of the |
|
|
14262
|
Mon Oct 22 15:19:05 2018 |
Steve | Update | VAC | Maglev controller serviced | Gautam & Steve,
Our controller is back with Osaka
maintenace completed. We swapped it in this |
|
|
14264
|
Wed Oct 31 17:54:25 2018 |
gautam | Update | VAC | CC1 hornet power connection restored | Steve reported to me that the CC1 Hornet
gauge was not reporting the IFO pressure
after some cable tracing at EX. I found that |
|
|
14279
|
Tue Nov 6 23:19:06 2018 |
gautam | Update | VAC | c1vac1 FAIL lights on (briefly) | Jon and I stuck a extender card into the
eurocrate at 1X8 earlier today (~5pm PT),
to see if the box was getting +24V DC from |
|
|
14281
|
Wed Nov 7 08:32:32 2018 |
Steve | Update | VAC | c1vac1 FAIL lights on (briefly)...checked | The vacuum and MC are OK
|
|
|
14291
|
Tue Nov 13 16:15:01 2018 |
Steve | Update | VAC | rga scan pd81 at day 119 |
|
|
|
14299
|
Fri Nov 16 10:26:12 2018 |
Steve | Update | VAC | single viton O-rings | The 40m vacuum envelope has one large single
O-ring on the OOC west side. All other doors
have double O-ring with annuloses. |
|
|
14301
|
Fri Nov 16 15:09:31 2018 |
Steve | Configuration | VAC | not venting cryo and ion pumps | Notes on the ion pumps and cryo pump:
Our
4 ion pumps were closed off for a lomg time.
I estmated their pressure to be around ~1 |
|
|
14305
|
Mon Nov 19 14:59:48 2018 |
Chub | Update | VAC | Vent 81 | Vent 80 is nearly complete; the instrument
is almost to atmosphere. All four ion
pump gate valves have been disconnected, |
|
|
14306
|
Mon Nov 19 17:09:00 2018 |
Steve | Update | VAC | Vent 81 | Gautam, Aaron, Chub and Steve,
|
|
|
14307
|
Mon Nov 19 22:01:50 2018 |
gautam | Update | VAC | Loose nut on valve | As I was turning off the lights in the
VEA, I heard a rattling sound from near the
PSL enclosure. I followed it to a valve - |
|
|
14310
|
Tue Nov 20 13:13:01 2018 |
gautam | Update | VAC | IMC alignment is okay | I checked the IMC alignment following the
vent, for which the manual beam block placed
on the PSL table was removed. The alignment |
|
|
14318
|
Mon Nov 26 15:58:48 2018 |
Steve | Update | VAC | Vent 81 | Gautam, Aaron, Chub & Steve,
ETMY heavy door replaced by light
one. |
|
|
14322
|
Tue Nov 27 17:06:51 2018 |
Steve | Configuration | VAC | Agilent 84FS turbo installed as TP2 | Chub & Steve, |
|
|
14367
|
Wed Dec 19 14:19:15 2018 |
Koji | Summary | VAC | Plan for pumpoing down test | We
still need elaborated test procedure posted
12/29 Wed |
|
|
14370
|
Wed Dec 19 21:14:50 2018 |
gautam | Update | VAC | Pumpdown tomorrow | I just spoke to Jon who asked me to make
this elog - we will be ready to test one
or more parts of the pumpdown procedure tomorrow |
|
|
14372
|
Thu Dec 20 08:38:27 2018 |
Jon | Update | VAC | Pumpdown tomorrow | Linked is the pumpdown
procedure, contained in the old 40m documentation.
The relevant procedure is "All Off --> |
|
|
14373
|
Thu Dec 20 10:28:43 2018 |
gautam | Update | VAC | Heavy doors back on for pumpdown 82 | [Chub, Koji, Gautam]
We replaced the EY and IOO chamber
heavy doors by 10:10 am PST. Torquing was |
|
|
14377
|
Fri Dec 21 11:13:13 2018 |
gautam | Omnistructure | VAC | N2 line valved off | Per the discussion yesterday, I
valved off the N2 line in the drill press |
|
|
14379
|
Fri Dec 21 12:57:10 2018 |
Koji | Omnistructure | VAC | N2 line valved off | Independent question: Are all the turbo
forelines vented automatically? We manually
did it for the main roughing line. |
|
|
14380
|
Thu Jan 3 15:08:37 2019 |
gautam | Omnistructure | VAC | Vac status unknown | Larry W came by the 40m, and reported that
there was a campus-wide power glitch (he
was here to check if our networking infrastructure |
|
|
14383
|
Fri Jan 4 10:25:19 2019 |
Jon | Omnistructure | VAC | N2 line valved off | Yes, for TP2 and TP3. They both have
a small vent valve that opens automatically
on shutdown. |
|
|
14391
|
Wed Jan 9 11:07:09 2019 |
gautam | Update | VAC | New Vac channel logging | Looks like I didn't restart all the
daqd processes last night, so the data was
not in fact being recorded to frames. I just |
|
|
14393
|
Wed Jan 9 20:01:25 2019 |
Jon | Update | VAC | Second pumpdown completed | [Jon, Koji, Chub, Gautam]
Summary
The
second pumpdown with the new vacuum system |
|
|
14394
|
Thu Jan 10 10:23:46 2019 |
gautam | Update | VAC | overnight leak rate | Overnight, the pressure increased from
247 uTorr to 264 uTorr over a period of 30000
seconds. Assuming an IFO volume of 33,000 |
|
|
14395
|
Thu Jan 10 11:32:40 2019 |
Chub | Update | VAC | Manual valve interfaced with CDS | Connected the manual gate valve status
indicator to the Acromag box this morning.
Labeled the temporary cable (a 50' 9p |
|
|
14396
|
Thu Jan 10 19:59:08 2019 |
Jon | Update | VAC | Vac System Running Normally on Turbo Pumps | [Jon, Gautam, Chub]
Summary
We continued
the pumpdown of the IFO today. The main volume |
|
|
14398
|
Mon Jan 14 10:06:53 2019 |
gautam | Update | VAC | Vent 82 complete | [chub, gautam]
IFO pressure was ~2e-4 |
|