| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16384
|
Wed Oct 6 15:04:36 2021 |
Hang | Update | SUS | PRM L2P TF measurement & Fisher matrix analysis | [Paco, Hang]
Yesterday afternoon Paco and I
measured the PRM L2P transfer function. |
|
|
16386
|
Wed Oct 6 16:31:02 2021 |
Tega | Update | Electronics | Sat Amp modifications | [Tega, Koji]
(S2100737) - Debugging showed
that the opamp, AD822ARZ, for PD2 circuit |
|
|
16387
|
Thu Oct 7 02:04:19 2021 |
Koji | Update | Electronics | Satellite amp adapter chassis | The 4 units of Satellite Amp Adapter were
done:
- The ears were fixed with the screws |
|
|
16388
|
Fri Oct 8 17:33:13 2021 |
Hang | Update | SUS | More PRM L2P measurements | [Raj, Hang]
We did some more measurements on
the PRM L2P TF. |
|
|
16389
|
Mon Oct 11 11:13:04 2021 |
rana | Update | SUS | More PRM L2P measurements | For the oplev, there are DQ channels you
can use so that its possible to look back
in the past for long measurements. They have |
|
|
16390
|
Mon Oct 11 13:59:47 2021 |
Hang | Update | SUS | More PRM L2P measurements | We report here the analysis results for
the measurements done in elog:16388. |
|
|
16399
|
Wed Oct 13 15:36:38 2021 |
Hang | Update | Calibration | XARM OLTF | We did a few quick XARM oltf measurements.
We excited C1:LSC-ETMX_EXC with a broadband
white noise upto 4 kHz. The timestamps for |
|
|
16400
|
Thu Oct 14 09:28:46 2021 |
Yehonathan | Update | PSL | PMC unlocked | PMC has been unlocked since ~ 2:30 AM.
Seems like the PZT got saturated. I moved
the DC output adjuster and the PMC locked |
|
|
16401
|
Thu Oct 14 11:25:49 2021 |
Yehonathan | Update | PSL | PMC unlocked | {Yehonathan, Anchal}
I went to get a sandwich around
10:20 AM and when I came back BS was moving |
|
|
16403
|
Thu Oct 14 16:38:26 2021 |
Ian MacMillan | Update | General | Kicking optics in freeSwing measurment | [Ian, Anchal]
We are going to kick the optics
tonight at 2am. |
|
|
16405
|
Thu Oct 14 20:16:22 2021 |
Yehonathan | Update | General | PRMI free swinging | {Yehonathan, Raj}
We aligned the IFO in the PRMI
state and let it swing freely. |
|
|
16406
|
Fri Oct 15 12:14:27 2021 |
Ian MacMillan | Update | General | Kicking optics in freeSwing measurment | [Ian, Anchal]
we ran the free swinging test last
night and the results match up with in 1/10th |
|
|
16410
|
Mon Oct 18 10:02:17 2021 |
Koji | Update | VAC | Vent Started / Completed | [Chub, Jordan, Anchal, Koji]
- Checked the main volume is isolated.
- TP1 and TP2 were made isolated from |
|
|
16411
|
Mon Oct 18 16:48:32 2021 |
Tega | Update | Electronics | Sat Amp modifications | [S2100738, S2100745, S2100751] Completed
three more Sat Amp units modification with
seven remaining. |
|
|
16412
|
Tue Oct 19 10:59:09 2021 |
Koji | Update | VAC | Vent Started / Completed | [Chub, Jordan, Yehonathan, Anchal,
Koji]
North door of the BS chamber opened |
|
|
16413
|
Tue Oct 19 11:30:39 2021 |
Koji | Update | VAC | How to vent TP1 | I learned that TP1 was vented through the
RGA room in the past. This can be done by
opening VM2 and a manual valve ("needle |
|
|
16418
|
Wed Oct 20 15:58:27 2021 |
Koji | Update | VAC | How to vent TP1 | Probably the hard disk of c0rga is dead.
I'll follow up in this elog later today.
Looking at the log in /opt/rtcds/caltech/c1/scripts/RGA/logs |
|
|
16419
|
Thu Oct 21 11:38:43 2021 |
Jordan | Update | SUS | Standoffs for Side Magnet on 3" Adapter Ring SOS Assembly | I had 8 standoffs made at the Caltech chemistry
machine shop to be used as spacers for the
side magnets on the 3" Ring assembly. |
|
|
16426
|
Tue Oct 26 10:17:14 2021 |
Yehonathan | Update | BHD | SOS assembly | Things that I need to start suspending
optics:
1. Winch adapter plate (D970314). |
|
|
16428
|
Tue Oct 26 14:53:24 2021 |
Koji | Update | Electronics | Rack | 1. We have a rack at the 40m storage. We
are free to take it to the lab. If there
is a tag, tell the info to Liz. Let's |
|
|
16439
|
Thu Oct 28 23:13:19 2021 |
Yehonathan | Update | BHD | SOS assembly | {Tega, Yehonathan, Koji}
Suspension |
|
|
16442
|
Mon Nov 1 14:51:34 2021 |
Koji | Update | General | Checking the vent plan | The vent team described
a detailed vent plan (and reports where the
actions have been performed) |
|
|
16443
|
Tue Nov 2 15:02:03 2021 |
Yehonathan | Update | BHD | SOS assembly | {Yehonathan, Tega}
We took the free-swinging spectra
of the OpLev in the X and Y direction. |
|
|
16445
|
Tue Nov 2 18:54:41 2021 |
Anchal, Paco | Update | BHD | Optical fibres laid for BHD upgrade | We successfully laid down all required
optical fibre fiber cables from 1X4-1X7
region to 1Y1-1Y3 region today. This includes |
|
|
16446
|
Tue Nov 2 22:50:30 2021 |
Koji | Update | BHD | SOS assembly | 2.5Hz is surprising. Can you move it down
to sub 1Hz by adding a socket cap screw at
the top instead of the set screw for the |
|
|
16449
|
Thu Nov 4 18:29:51 2021 |
Tega | Update | SUS | Setting up suspension test model | [Ian,Tega]
Today we continued working on setting
up the 6 degrees of freedom model for |
|
|
16451
|
Fri Nov 5 12:49:32 2021 |
rana | Update | SUS | Setting up suspension test model | Please don't put it on c1sus2. Put
it on the completely independent test stand
as we discussed Wednesday. You must |
|
|
16452
|
Fri Nov 5 20:35:10 2021 |
Koji | Update | BHD | Feedthru / Optical Mounts | - New feedthrus [4xDB25 Qty 4 / 8xDB25
Qty 1] are placed on the wire shelf at the
entrance -> Jordan, please clean them. |
|
|
16456
|
Mon Nov 8 17:22:27 2021 |
Yehonathan | Update | BHD | SOS assembly | Big Gluing
Day |
|
|
16457
|
Mon Nov 8 17:52:22 2021 |
Ian MacMillan | Update | SUS | Setting up suspension test model | [Ian, Tega]
We combined a controler and a plant
model into a single modle (See first attachment) |
|
|
16459
|
Tue Nov 9 11:11:37 2021 |
Yehonathan | Update | BHD | SOS assembly | The gluing was mostly successful. Only
two magnets didn't stick (see attachment). |
|
|
16465
|
Fri Nov 12 23:47:29 2021 |
Yehonathan | Update | BHD | SOS assembly | {Tega, Yehonathan}
First
attempt at the suspension of a Lambda Optic |
|
|
16470
|
Tue Nov 16 17:42:46 2021 |
Yehonathan | Update | BHD | SOS assembly | {Tega, Yehonathan}
Another
attempt at the suspension of a Lambda Optic |
|
|
16471
|
Tue Nov 16 18:28:53 2021 |
Koji | Update | BHD | SOS assembly | Yehonathan told me that the wires
are touching between the clamps!
I went back to the CAD and confirmed |
|
|
16472
|
Wed Nov 17 07:32:48 2021 |
Chub | Update | General | wire clamp plate mod | This will be difficult to modify with the
magnets and dumbells in place. Even
if someone CAN clamp this piece into an endmill |
|
|
16473
|
Wed Nov 17 11:53:27 2021 |
Koji | Update | General | wire clamp plate mod | Of course, we remove the magnet-dumbbell
for machining. After that the part will be
cleaned/baked again. And Yehonathan is going |
|
|
16474
|
Wed Nov 17 17:37:53 2021 |
Anchal | Update | General | Placed Nodus and fb1 on UPS power | Today I placed nodus and fb1 on UPS battery
backed supply. Now power glitches should
not hurt our cds system. |
|
|
16476
|
Thu Nov 18 15:16:10 2021 |
Anchal | Update | General | Moved Chiara to 1X7 above nodus powered with same UPS | [Anchal, Paco]
We moved chiara to 1X7 above nodus
and powered with same UPS from a battery |
|
|
16479
|
Mon Nov 22 17:42:19 2021 |
Anchal | Update | General | Connected Megatron to battery backed ports of another UPS | [Anchal, Paco]
I used the UPS that was providing
battery backup for chiara earlier (a APS |
|
|
16480
|
Tue Nov 23 18:02:05 2021 |
Anchal | Update | IMC | MC autolocker shifted to python3 script running in docker | I finished copying over the current autolocker
bash script functionality into a python script |
|
|
16483
|
Wed Nov 24 14:15:15 2021 |
Yehonathan | Update | BHD | SOS assembly | Late update. We got 2 modified side blocks
from Jordan a few days ago. Yesterday, I
glued a side magnet to one of the modified |
|
|
16484
|
Wed Nov 24 14:34:15 2021 |
Yehonathan | Update | BHD | Saving on SUSAUX slow channels | Koji found out that the stock for BIO Acromag
modules is very low and that the lead time
for ordering new ones is ~ 1-year X-o. |
|
|
16488
|
Tue Nov 30 17:11:06 2021 |
Paco | Update | General | Moved white rack to 1X3.5 | [Paco, Ian, Tega]
We moved the white rack (formerly
unused along the YARM) to a position between |
|
|
16489
|
Wed Dec 1 12:57:08 2021 |
Yehonathan | Update | BHD | SOS assembly | {Yehonathan, Tega}
We glued some magnets onto modified
side blocks. We followed pretty much the |
7x |
|
16490
|
Mon Dec 6 14:26:52 2021 |
Koji | Update | VAC | Pumping down the RGA section | Jordan reported that the RGA section needs
to be pumped down to allow the analyzer to
run at sufficiently low pressure (P<1e-4 |
|
|
16491
|
Mon Dec 6 18:23:04 2021 |
Yehonathan | Update | BHD | SOS assembly | I installed OSEMs on the LO1 SOS. To my
surprise, the side magnet is not in the center
of the side OSEM. It completely misses the |
|
|
16493
|
Tue Dec 7 13:12:50 2021 |
Koji | Update | VAC | Pumping down the RGA section | So that Jordan can run the RGA scan this
afternoon, I ran TP3 and started pumping
down the RGA section. |
|
|
16494
|
Wed Dec 8 10:14:43 2021 |
Jordan | Update | VAC | Pumping down the RGA section | After an overnight pumpdown/RGA warm up,
I took a 100 amu scan of the RGA volume and
subsequent pumping line. Attached is a screenshot |
|
|
16495
|
Thu Dec 9 00:32:56 2021 |
Tega | Update | CDS | New SUS medm screen update | The new SUS screen can be reached via sitemap
-> IFO SUS button -> NEW
ETMX dropdown menu link. Please use and provide |
|
|
16496
|
Thu Dec 9 18:22:36 2021 |
Tega | Update | CDS | New SUS medm screen update | Work on the medm screen for SUS RMS
monitor is ongoing. The next step would
be to incorporate this into the |
|