| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
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 |
|
|
14392
|
Wed Jan 9 11:33:35 2019 |
gautam | Update | CDS | Timing issues still persist | Summary:
The gps time mismatch between /proc/gps
and gpstime seems to be resolved. However, |
|
|
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 |
|
|
14390
|
Tue Jan 8 19:13:39 2019 |
Jon | Update | Upgrade | Ready for pumpdown tomorrow | Everything is set for a second pumpdown
tomorrow. We'll plan to start pumping
after the 1pm meeting. Since the main volume |
|
|
14389
|
Tue Jan 8 10:27:27 2019 |
gautam | Update | General | Near-term in-chamber work | Here is a list of tasks I think we should
prioritize for the next two weeks. The idea
is to get back to the previous state of being |
|
|
14388
|
Mon Jan 7 19:21:45 2019 |
Jon | Configuration | Computer Scripts / Programs | Vac system shutdown | ADC work finished for the day. The vac
controls are back up, with all valves
CLOSED and all pumps OFF. |
|
|
14387
|
Mon Jan 7 11:54:12 2019 |
Jon | Configuration | Computer Scripts / Programs | Vac system shutdown | I'm making a controlled shutdown of
the vac controls to add new ADC channels.
Will advise when it's back up. |
|
|
14386
|
Fri Jan 4 17:43:24 2019 |
gautam | Update | CDS | Timing issues | [J Hanks (remote),
koji, gautam] |
|
|
14385
|
Fri Jan 4 15:18:15 2019 |
Koji | Update | General | Chiara disk clean up and internally mounted | [Koji Gautam]
Took the opprtunity of the power
glitch to take care of the disk situation |
|
|
14384
|
Fri Jan 4 11:06:16 2019 |
Jon | Omnistructure | Upgrade | Vac System Punchlist | The base Acromag vacuum system is running
and performing nicely. Here is a list of
remaining questions and to-do items we still |
|
|
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. |
|
|
14382
|
Thu Jan 3 21:17:49 2019 |
rana | Configuration | Computers | Workstation Upgrade: Donatella -> Scientific Linux 7.2 | donatella was one of our last workstations
running ubuntu12. we installed SL7 on there
today |
|
|
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 |
|
|
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. |
|
|
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 |
|
|
14376
|
Fri Dec 21 11:11:51 2018 |
gautam | Update | CDS | Logging of new Vacuum channels | The N2 pressure channel name was also wrong
in C0EDCU.ini, so I updated it this morning
to the correct name and units: |
|
|
14375
|
Thu Dec 20 21:29:41 2018 |
Jon | Omnistructure | Upgrade | Vacuum Controls Switchover Completed | [Jon, Chub, Koji, Gautam]
Summary
Today we carried
out the first pumpdown with the new vacuum |
|
|
14374
|
Thu Dec 20 17:17:41 2018 |
gautam | Update | CDS | Logging of new Vacuum channels | Added the following channels to C0EDCU.ini:
|
|
|
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 |
|
|
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 --> |
|
|
14371
|
Wed Dec 19 22:11:28 2018 |
Koji | Update | General | How to align the copper OMC | The OMC input optics layout is attached
Checked the spot position on OMMT-FM1.
It was off from the center. This was causing |
|
|
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 |
|
|
14369
|
Wed Dec 19 19:51:19 2018 |
gautam | Update | General | Pumpdown prep | [Koji,
gautam]
Summary: |
|
|
14368
|
Wed Dec 19 15:15:56 2018 |
gautam | Update | IOO | TT1/TT2 stepping | I removed the ND filter from the ETMYT
camera to facilitate searching for a TRY
beam. This should be replaced before we go |
|
|
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 |
|
|
14366
|
Wed Dec 19 00:12:46 2018 |
gautam | Update | OMC | 40m OMC DCC node | I made a node
to collect drawings/schematics for the 40m
OMC, added the length drive for now. We should |
|
|
14365
|
Tue Dec 18 18:13:32 2018 |
aaron | Update | OMC | OMC L HV Piezo driver tests (again) | I tested the OMC-L HV driver box again,
and made the following observations:
Drove the HV diff pins |
|
|
14364
|
Tue Dec 18 11:42:40 2018 |
Chub | Update | General | Acromag box wired | The Auxiliary DAQ Chassis, or Acromag box,
is now wired and ready for testing.
I will be sorting the cables at the vacuum |
|
|
14363
|
Mon Dec 17 20:45:40 2018 |
aaron | Update | OMC | Aligning the OMC | [gautam, aaron]
We did work in the OMC chamber
today to get the OMC aligned. Aaron was in |
|
|
14362
|
Sat Dec 15 20:04:03 2018 |
gautam | Update | IOO | TT1/TT2 stepping | I'm running a script that moves TT1
and TT2 randomly in some restricted P/Y space
to try and find an alignment that gets some |
|
|
14361
|
Sat Dec 15 18:29:53 2018 |
Koji | Update | General | Chiara new USB 4TB DIsk | The local backup was done at 18:18
after 11h18m of running.
|
|
|
14360
|
Fri Dec 14 22:19:22 2018 |
Koji | Update | General | Chiara new USB 4TB DIsk | Edit:
It was not 4TB |
|
|
14359
|
Fri Dec 14 14:25:36 2018 |
Koji | Update | CDS | chiara backup | fsck of chiara backup disk (UUID="90a5c98a-22fb-4685-9c17-77ed07a5e000")
was done. But this required many files to
be fixed. So the backed-up files are not |
|
|
14358
|
Fri Dec 14 13:06:12 2018 |
aaron | Update | OMC | Aligning the OMC | I replaced the 2'' AUX-AS combining
BS with a freshly mounted 2'' HR
mirror for 1064. The mirror is labelled 'Y1-2037-45-P', |
|
|
14357
|
Fri Dec 14 13:02:24 2018 |
aaron | Update | OMC | Aligning the OMC | I replaced the 2'' AUX-AS combining
BS with a 2'' HR mirror for 1064.
I aligned the AUX beam from the new HR mirror |
|
|
14356
|
Thu Dec 13 22:56:28 2018 |
gautam | Update | CDS | Frames | [koji, gautam]
We looked into the /frames situation
a bit tonight. Here is a summary: |
|
|
14355
|
Thu Dec 13 22:36:42 2018 |
aaron | Update | OMC | Aligning the OMC | I turned on AUX, and aligned the aux beam
to be centered on the first optic the AS
beam sees on the AP table. I then turned |
|
|
14354
|
Thu Dec 13 22:24:21 2018 |
aaron | Update | OMC | OMC channels | I completed testing of the AI board mentioned
above. In addition to the blown fuse, there
were two problems: |
|
|
14353
|
Thu Dec 13 20:10:08 2018 |
Koji | Update | General | Power Outage recovery | [Gautam, Aaron, Koji]
The PSL interlock system
was fixed and now the 40m lab is laser hazard |
|
|
14352
|
Thu Dec 13 18:12:47 2018 |
gautam | Update | IOO | ND filter on AS camera changed | In order to see the AS beam a bit more
clearly in our low-power config, I swapped
out the ND=1.0 filter on the AS camera for |
|
|
14351
|
Thu Dec 13 12:06:35 2018 |
gautam | Update | General | Power Outage recovery | I did a walkaround and checked the status
of all the interlock switches I could find
based on the SOP |
|
|
14350
|
Thu Dec 13 10:03:07 2018 |
Chub | Update | General | OMC chamber | Bob, Aaron, and I removed the door from
the OMC chamber this morning. Everything
went well. |
|
|
14349
|
Thu Dec 13 01:26:34 2018 |
gautam | Update | General | Power Outage recovery | [koji,
gautam]
After several combinations of soft/hard |
|
|
14348
|
Wed Dec 12 18:27:07 2018 |
Jon | Omnistructure | Upgrade | Analog signals, A/D Acromag added to vacuum system | There turned out to be a few analog signals
for the vacuum system after all. The TP2/3
foreline pressure gauges were never part |
|
|
14347
|
Wed Dec 12 11:53:29 2018 |
aaron | Update | General | Power Outage | At 11:13 am there was a ~2-3 second interruption
of all power at the 40m.
I checked that nobody was in any |
|
|
14346
|
Tue Dec 11 22:50:07 2018 |
aaron | Update | OMC | Aligning the OMC | I did the following:
Noticed that the OMC rack's
power has +-18V, but I had tested |
6x |
|
14345
|
Tue Dec 11 18:20:59 2018 |
gautam | Update | Optical Levers | BS/PRM HeNe is dead | I found that the BS/PRM OL SUM channels
were reading close to 0. So I went to the
optical table, and found that there was no |
|
|
14344
|
Tue Dec 11 14:33:29 2018 |
gautam | Update | CDS | NDScope | NDscope is now running on pianosa. To be
really useful, we need the templates, so
I've made |
|
|
14343
|
Tue Dec 11 14:24:18 2018 |
aaron | Update | OMC | Aligning the OMC | I set up a function generator to drive
OMC-L, and have the two DCPD mons and the
OMC REFL PD sent to an oscilloscope. I need |
|