| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14411
|
Tue Jan 22 20:36:53 2019 |
gautam | Update | SUS | ETMY OSEMs faulty | Short update on latest Satellite box woes.
I checked the resistance
of all 5 OSEM coils on ETMY using a DB25 |
|
|
14410
|
Sun Jan 20 23:41:00 2019 |
Jon | Omnistructure | VAC | Notes on vac serial comm, adapter wiring | I've attached my handwritten notes
covering all the serial communications in
the vac system, and the relevant wiring for |
|
|
14409
|
Sat Jan 19 15:33:18 2019 |
gautam | Update | SUS | ETMY OSEMs faulty | After diagnosis with the tester box, as
I suspected, the fully open DC voltages on
the two problematic channels, LL and UR, |
|
|
14408
|
Sat Jan 19 05:07:45 2019 |
Koji | Update | SUS | Unused optic on EY table | I don't think it was used. It is not
on the diagram too. You can remove it. |
|
|
14407
|
Fri Jan 18 21:34:18 2019 |
gautam | Update | SUS | Unused optic on EY table | Does anyone know what the purpose of the
indicated optic in Attachment #1 is? |
|
|
14406
|
Fri Jan 18 17:44:14 2019 |
gautam | Update | VAC | Pumping on RGA volume | Steve came by the lab today, and looked
at the status of the upgraded vacuum system.
He recommended pumping on the RGA volume, |
|
|
14405
|
Fri Jan 18 15:34:37 2019 |
gautam | Update | Thermal Compensation | Elliptical reflector part number | Nobody documented this, but here is the
part number with mechanical drawings of the
elliptical reflector installed at EY: |
|
|
14404
|
Fri Jan 18 12:52:07 2019 |
gautam | Update | Optical Levers | BS/PRM Oplev HeNe replaced | I replaced the BS/PRM Oplev HeNe with one
of the heads from the SP table where Steve
was setting up the OL RIN/pointing noise |
|
|
14403
|
Wed Jan 16 16:25:25 2019 |
gautam | Update | SUS | Yarm locked | [chub, gautam]
Summary:
Y arm was locked at low power in |
|
|
14402
|
Tue Jan 15 18:16:00 2019 |
gautam | Update | Optical Levers | ETMY Oplev HeNe needs replacement | Perhaps the ETMY Oplev HeNe is also giving
up - the power has fallen by ~30% over 1
year (Attachment #2), nearly twice as much |
|
|
14401
|
Tue Jan 15 15:49:47 2019 |
gautam | Update | SUS | EY door opened | While restoring OSEMs on ETMY, I noticed
that the open voltages for the UR and LL
OSEMs had significantly (>30%) changed |
|
|
14400
|
Tue Jan 15 15:27:36 2019 |
gautam | Update | General | Lasers and other stuff turned back on | VEA is now a laser hazard area
as usual, several 1064nm lasers
in the lab have been turned back on. Apart |
|
|
14399
|
Tue Jan 15 10:52:38 2019 |
gautam | Update | SUS | EY door opened | [chub, bob, gautam]
We took the heavy door off the
EY chamber at ~930am. |
|
|
14398
|
Mon Jan 14 10:06:53 2019 |
gautam | Update | VAC | Vent 82 complete | [chub, gautam]
IFO pressure was ~2e-4 |
|
|
14397
|
Fri Jan 11 16:38:57 2019 |
gautam | Update | General | Some alignment checks | The pumpdown seems to be progressing smoothly,
so I think we are going to stick with the
plan decided on Wednesday, and vent the IFO |
|
|
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 |
|
|
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 |
|
|
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 |
|