| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
15402
|
Tue Jun 16 13:35:03 2020 |
Jon | Update | VAC | Temporary vac fix / IFO usable again | [Jon, Jordan, Koji]
Today Jordan reconfigured the vac
system to allow pumping of the main volume |
|
|
15404
|
Wed Jun 17 16:27:51 2020 |
gautam | Update | VAC | Questions/comments on vacuum | I missed the vacuum discussion on the call
today, but I have some questions/comments:
Isn’t it true that |
|
|
15406
|
Thu Jun 18 11:00:24 2020 |
Jon | Update | VAC | Questions/comments on vacuum |
Quote:
|
|
|
15407
|
Thu Jun 18 12:00:36 2020 |
gautam | Update | VAC | Questions/comments on vacuum | I agree there were MEDM fields, but I can't
find any record of these channels being recorded
till 2018 December, so I don't agree |
|
|
15408
|
Thu Jun 18 14:13:03 2020 |
Jon | Update | VAC | Questions/comments on vacuum | I agree there
were MEDM fields, but I can't find any |
|
|
15409
|
Thu Jun 18 15:25:08 2020 |
Jordan | Update | VAC | TP2 and TP3 Forepump removal | I removed the backing pumps for TP2 and
TP3 today to test ultimate pressure and determine
if they need a tip seal replacement. This |
|
|
15410
|
Thu Jun 18 15:46:34 2020 |
gautam | Update | VAC | Questions/comments on vacuum | So why not just have a special mode for
the interlock code during pumpdown and venting,
and during normal operation we expect the |
|
|
15411
|
Thu Jun 18 16:56:34 2020 |
Jordan | Update | VAC | TP2 and TP3 Forepump removal |
Quote:
|
|
|
15412
|
Thu Jun 18 22:33:57 2020 |
Jon | Omnistructure | VAC | Vac hardware purchase list | Replacement Hardware Purchase List
I've
created a purchase
list of hardware needed to restore the aging |
|
|
15413
|
Fri Jun 19 07:40:49 2020 |
Jon | Update | VAC | Questions/comments on vacuum | I think we should discuss interlock possibilities at
a 40m meeting. I'm reluctant to make
the system more complicated, but perhaps |
|
|
15415
|
Fri Jun 19 09:57:35 2020 |
gautam | Update | VAC | Questions/comments on vacuum | For this particular email service, ideally
the email should be sent out as soon as the
interlock is tripped, so this would require |
|
|
15417
|
Fri Jun 19 14:03:50 2020 |
Jordan | Update | VAC | Forepump Tip Seal Replacement | Tip Seals were replaced on the forepumps
for TP2 and TP3, and both are ready to be
installed back onto the forelines. |
|
|
15421
|
Mon Jun 22 10:43:25 2020 |
Jon | Configuration | VAC | Vac maintenance at 11 am | The vac system is going down at 11 am today
for planned maintenance:
Re-install the repaired |
|
|
15424
|
Mon Jun 22 20:06:06 2020 |
Jon | Configuration | VAC | Vac maintenance complete | This work is finally complete. The dry
pump replacement was finished quickly but
the controls updates required some substantial |
|
|
15425
|
Tue Jun 23 17:54:56 2020 |
rana | Configuration | VAC | Vac maintenance complete | I propose we go for all CAPS for all channel
names. The lower case names is just a holdover
from Steve/Alan from the 90's. All other |
|
|
15446
|
Wed Jul 1 18:03:04 2020 |
Jon | Configuration | VAC | UPS replacements | I looked into how the new UPS devices
suggested by Chub would communicate with
the vac interlocks. There are several possible |
|
|
15465
|
Thu Jul 9 18:00:35 2020 |
Jon | Configuration | VAC | UPS replacements | Chub has placed the order for two new UPS
units (115V for TP2/3 and a 220V version
for TP1). |
|
|
15499
|
Thu Jul 23 15:58:24 2020 |
Jon | Summary | VAC | Vacuum controls refurbishment plan | This year we've struggled with vacuum
controls unreliability (e.g., spurious interlock
triggers) caused by decaying hardware. Here |
|
|
15500
|
Fri Jul 24 15:40:59 2020 |
Jordan | Update | VAC | Installation of two new UPS units | I installed the Tripp
Lite SMX1000RT2U and Tripp
Lite Smart1000LCD at the |
|
|
15501
|
Mon Jul 27 15:48:36 2020 |
Jon | Summary | VAC | Vacuum parts ordered | To carry out the next steps of the vac
refurbishment plan [ELOG
15499], I've ordered parts necessary |
|
|
15502
|
Tue Jul 28 12:22:40 2020 |
Jon | Update | VAC | Vac interlock test today 1:30 pm | This afternoon Jordan is going to carry
out a test of the V4 and V5 hardware
interlocks. To inform the interlock improvement |
|
|
15504
|
Tue Jul 28 14:11:14 2020 |
Jon | Update | VAC | Vac interlock test today 1:30 pm | This test has been completed. The IFO configuration
has been reverted to nominal.
For future reference: yes, |
|
|
15526
|
Fri Aug 14 10:10:56 2020 |
Jon | Configuration | VAC | Vacuum repairs today | The vac system is going down now for planned
repairs [ELOG
15499]. It will likely take most |
|
|
15527
|
Sat Aug 15 02:02:13 2020 |
Jon | Configuration | VAC | Vacuum repairs today | Vacuum work is completed. The TP2 and TP3
interlocks have been overhauled as proposed
in ELOG |
|
|
15528
|
Sat Aug 15 15:12:22 2020 |
Jon | Configuration | VAC | Overhaul of small turbo pump interlocks | Summary
Yesterday I completed
the switchover of small turbo pump interlocks
as proposed in ELOG |
|
|
15537
|
Mon Aug 24 08:13:56 2020 |
Jon | Update | VAC | UPS installation | I'm in the lab this morning to interface
the two new UPS units with the digital controls
system. Will be out by lunchtime. The disruptions |
|
|
15538
|
Mon Aug 24 11:25:07 2020 |
Jon | Update | VAC | UPS installation | I'm leaving the lab shortly. We're
not ready to switch over the vac equipment
to the new UPS units yet. |
|
|
15541
|
Wed Aug 26 15:48:31 2020 |
gautam | Update | VAC | Control screen left open on vacuum workstation | I found that the control MEDM screen was
left open on the c1vac workstation. This
should be closed every time you leave the |
|
|
15556
|
Fri Sep 4 15:26:55 2020 |
Jon | Update | VAC | Vac system UPS installation | The vac controls are going down now to
pull and test software changes. Will advise
when the work is completed. |
|
|
15557
|
Fri Sep 4 21:12:51 2020 |
Jon | Update | VAC | Vac system UPS installation | The vac work is completed. All of the vacuum
equipment is now running on the new 120V
UPS, except for TP1. The 230V TP1 is still |
|
|
15558
|
Sat Sep 5 12:01:10 2020 |
Jon | Update | VAC | Vac system UPS installation | Summary
Yesterday's UPS
switchover was mostly a success. The new
Tripp |
|
|
15577
|
Wed Sep 16 12:03:07 2020 |
Jon | Update | VAC | Replacing pressure gauges | Assembled is the list of dead pressure
gauges. Their locations are also circled
in Attachment 1. |
|
|
15582
|
Sat Sep 19 18:07:35 2020 |
Koji | Update | VAC | TP3 RP failure | I came to the campus and Gautam notified
that he just had received the alert from
the vac watchdog. |
|
|
15586
|
Sat Sep 19 19:37:16 2020 |
not Koji | Update | VAC | TP3 RP failure | Disconcerting because those tip seals were
just replaced [15417].
Maybe they were just defective, but if there |
|
|
15591
|
Mon Sep 21 15:57:08 2020 |
Jordan | Update | VAC | TP3 Forepump Replacement and Vac reset | I removed the forepump (Varian SH-110)
for TP3 today to see why it had failed over
the weekend. I tested it in the C&B lab |
|
|
15599
|
Wed Sep 23 08:57:18 2020 |
gautam | Update | VAC | TP2 running HOT | The interlocks tripped at ~630am local
time. Jordan reported that TP2 was supposedly
running at 52 C (!). |
|
|
15600
|
Wed Sep 23 10:06:52 2020 |
Koji | Update | VAC | TP2 running HOT | Here is the timeline. This suggests TP2
backing RP failure.
1st line: TP2 foreline pressure |
|
|
15602
|
Wed Sep 23 15:06:54 2020 |
Jordan | Update | VAC | TP2 Forepump Re-install | I removed the forepump to TP2 this morning
after the vacuum failure, and tested in the
C&B lab. I pumped down on a small volume |
|
|
15615
|
Tue Oct 6 14:35:16 2020 |
Jordan | Update | VAC | Spare forepumps | I have placed 3 new in box, IDP 7 forepumps
along the x arm of the interferometer. These
are to be used as spares for both the 40m |
|
|
15668
|
Tue Nov 10 11:59:37 2020 |
gautam | Update | VAC | Stuck RV2 | I've uploaded some more photos here.
I believe the problem is a worn out thread
where the main rotary handle attaches to |
|
|
15681
|
Wed Nov 18 17:51:50 2020 |
gautam | Update | VAC | Agilent pressure gauge controller delivered | It is stored along with the cables that
arrived a few weeks ago, awaiting the gauges
which are now expected next week sometime. |
|
|
15686
|
Mon Nov 23 16:33:10 2020 |
gautam | Update | VAC | More vacuum deliveries | Five Agilent pressure gauges were delivered
to the 40m. It is stored with the controller
and cables in the office area. This completes |
|
|
15692
|
Wed Dec 2 12:27:49 2020 |
Jon | Update | VAC | Replacing pressure gauges | Now that the new Agilent full-range gauges
(FRGs) have been received, I'm putting
together an installation plan. Since |
|
|
15698
|
Thu Dec 3 10:33:00 2020 |
gautam | Update | VAC | TrippLite UPS delivered | The latest greatest UPS has been delivered.
I will move it to near the vacuum rack in
its packaging for storage. It weighs >100lbs |
|
|
15703
|
Thu Dec 3 14:53:58 2020 |
Jon | Update | VAC | Replacing pressure gauges | Update to the gauge replacement plan (15692),
based on Jordan's walk-through today. |
|
|
15721
|
Wed Dec 9 20:14:49 2020 |
gautam | Update | VAC | UPS failure | Summary:
The (120V) UPS at the vacuum
rack is faulty.
The drypump backing |
|
|
15722
|
Thu Dec 10 11:07:24 2020 |
Chub | Update | VAC | UPS fault | Is that a fault code that you can decipher
in the manual, or just a light telling you
nothing but your UPS is dead? |
|
|
15723
|
Thu Dec 10 11:17:50 2020 |
Chub | Update | VAC | UPS fault | I can't find anything in the manual
that describes the nature of the FAULT message.
In fact, it's not mentioned at all. |
|
|
15724
|
Thu Dec 10 13:05:52 2020 |
Jon | Update | VAC | UPS failure | I've investigated the vacuum controls
failure that occurred last night. Here's
what I believe happened. |
|
|
15725
|
Thu Dec 10 14:29:26 2020 |
gautam | Update | VAC | UPS failure | I don't buy this story - P2 only briefly
burped around GPStime 1291608000 which is
around 8pm local time, which is when I was |
|