| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16018
|
Mon Apr 12 17:30:11 2021 |
Yehonathan | Update | BHD | SOS assembly | Today, I screwed the plungers on the sensor
plates and installed them on the Towers.
I also installed the wire clamps on the suspension |
|
|
16111
|
Mon May 3 16:49:04 2021 |
Yehonathan | Update | BHD | SOS assembly | I found a "vice" in the cleanroom
(attachment 1). I used it to push dowel pins
into the last suspension block using some |
|
|
16170
|
Tue Jun 1 16:17:06 2021 |
Yehonathan | Update | BHD | SOS assembly | I tried to push the clean Viton tips into
the vented screws just to find out that the
vented holes are too small. We need to drill |
|
|
16172
|
Wed Jun 2 01:03:19 2021 |
Koji | Update | BHD | SOS assembly | Can you just cut the viton tips smaller?
If you cut it to have some wedge (or say,
taper), it can get stuck with the vent hole. |
|
|
16215
|
Fri Jun 18 19:02:00 2021 |
Yehonathan | Update | BHD | SOS assembly | Today I glued some magnets to dumbells.
First, I took 6 magnets (the maximum
I can glue in one go) and divided them into |
|
|
16216
|
Fri Jun 18 23:53:08 2021 |
Koji | Update | BHD | SOS assembly | Then, can we replace the four small EQ
stops at the bottom (barrel surface) with
two 1/4-20 EQ stops? This will require drilling |
|
|
16221
|
Tue Jun 22 17:05:26 2021 |
Yehonathan | Update | BHD | SOS assembly | According to the schematics,
the distance between the original EQ tap
holes is 0.5". Given that the original |
|
|
16227
|
Mon Jun 28 12:35:19 2021 |
Yehonathan | Update | BHD | SOS assembly | On Thursday, I glued another set of 6 dumbells+magnets
using the same method as before. I made sure
that dumbells are pressed onto the magnets. |
|
|
16229
|
Tue Jun 29 20:45:52 2021 |
Yehonathan | Update | BHD | SOS assembly | I glued another batch of 6 magnet+dumbell
assemblies. I will take a look at them under
the microscope once they are cured. |
|
|
16235
|
Thu Jul 1 16:45:25 2021 |
Yehonathan | Update | BHD | SOS assembly | The bonding test passed - the weight still
hangs from the dumbell. Unfortunately, I
broke the bond trying to release the assembly |
|
|
16259
|
Tue Jul 27 17:14:18 2021 |
Yehonathan | Update | BHD | SOS assembly | Jordan has made 1/4" tap holes in
the lower EQ stop holders (attachment). The
1/4" stops (schematics) |
|
|
16260
|
Tue Jul 27 20:12:53 2021 |
Koji | Update | BHD | SOS assembly | 1 or 2. The stained ones are just fine.
If you find the vented 1/4-20 screws in the
clean room, you can use them. |
|
|
16262
|
Wed Jul 28 12:00:35 2021 |
Yehonathan | Update | BHD | SOS assembly | After receiving two new tubes of EP-30
I resumed the gluing activities. I made a
spreadsheet |
|
|
16359
|
Thu Sep 23 18:18:07 2021 |
Yehonathan | Update | BHD | SOS assembly | I have noticed that the dumbells coming
back from C&B had glue residues on them.
An example is shown in attachment 1: it can |
|
|
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). |
|
|
16439
|
Thu Oct 28 23:13:19 2021 |
Yehonathan | Update | BHD | SOS assembly | {Tega, Yehonathan, Koji}
Suspension |
|
|
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. |
|
|
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 |
|
|
16456
|
Mon Nov 8 17:22:27 2021 |
Yehonathan | Update | BHD | SOS assembly | Big Gluing
Day |
|
|
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 |
|
|
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 |
|
|
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 |
|
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 |
|
|
16497
|
Thu Dec 9 21:57:35 2021 |
Yehonathan | Update | BHD | SOS assembly | {Yehonathan, Tega}
We took the optic out of the SOS
tower and removed the side blocks. We mounted |
|
|
16505
|
Tue Dec 14 14:02:33 2021 |
Yehonathan | Update | BHD | SOS assembly | {Yehonathan, Paco}
I fixed the overall height of the
adapter (attachment 1). I put an OSEM next |
|
|
16511
|
Wed Dec 15 22:09:53 2021 |
Yehonathan | Update | BHD | SOS assembly | {Paco, Yehonathan, Anchal}
I cut the wires from the winches
and removed the winch adapter plate. I engrave |
|
|
16518
|
Thu Dec 16 18:16:36 2021 |
Yehonathan | Update | BHD | SOS assembly | Today I glued magnets onto the new 3/4"
mirror adapters. I also took the opportunity
to make some more side magnets assemblies. |
|
|
16520
|
Fri Dec 17 17:50:17 2021 |
Yehonathan | Update | BHD | SOS assembly | I threaded a new wire through a different
side block with a magnet and clamped it under
a microscope. It was hard, but eventually, |
|
|
16521
|
Fri Dec 17 19:16:45 2021 |
Koji | Update | BHD | SOS assembly | We @40m do the convention of the arrow
at the thinnest side & pointing the HR
side, but nobody says Lambda does the same. |
|
|
16523
|
Fri Dec 17 22:16:07 2021 |
Yehonathan | Update | BHD | SOS assembly | I specifically checked the specification
before mounting the mirror. It says clearly
"Arrow at the thinnest location pointing |
|
|
16524
|
Sat Dec 18 00:56:14 2021 |
Koji | Update | BHD | SOS assembly | Sad... We just need to check the wedge
direction everytime, unfortunately.
Pencil: can you try to gently wipe |
|
|
16526
|
Mon Dec 20 13:52:01 2021 |
Koji | Update | BHD | SOS assembly | LO1: No need to remove
the pencil mark for the damping test. Until
we see serious contamination on the LO1 optic, |
|
|
16528
|
Mon Dec 20 17:26:13 2021 |
Yehonathan | Update | BHD | SOS assembly | {Yehonathan, Anchal}
I released the AS1 wires from the
winches, removed the adapter from the SOS |
7x |
|
16531
|
Tue Dec 21 18:04:46 2021 |
Yehonathan | Update | BHD | SOS assembly | I locked the EQ stops while retaining the
XY alignment on the QPD and installed 5 green
OSEMs. AS1 is ready for transfer into the |
|
|
16544
|
Wed Jan 5 19:18:06 2022 |
Yehonathan | Update | BHD | SOS assembly -- AS4 | {Paco, Yehonathan, Anchal}
Today we suspended AS4
(E2000226-B |
|
|
16550
|
Thu Jan 6 17:00:20 2022 |
Yehonathan | Update | BHD | SOS assembly -- LO2 | {Paco, Yehonathan}
Today we suspended LO2 (E1800089) |
|
|
16542
|
Tue Jan 4 18:27:23 2022 |
Paco | Update | BHD | SOS assembly -- PR3 | [yehonathan, paco, anchal]
We continue suspending PR3 today.
Yehonathan and Paco suspended the thick optic |
|
|
16568
|
Tue Jan 11 09:53:14 2022 |
not Koji | Update | BHD | SOS assembly -- Peek screws and nuts | I handed the Peek parts we got from McMaster
to Jordan for C&B. |
|
|
16556
|
Fri Jan 7 17:59:45 2022 |
Yehonathan | Update | BHD | SOS assembly -- SR2 | {Yehonathan, Paco}
{Paco, Yehonathan}
Today we suspended SR2 ( |
|
|
16557
|
Fri Jan 7 18:24:25 2022 |
Koji | Update | BHD | SOS assembly -- SR2 | Vacseal in the freezer. It could have been
expired sooooo many years ago, We need some
cure testing. |
|
|
16561
|
Mon Jan 10 14:00:44 2022 |
not Koji | Update | BHD | SOS assembly -- SR2 | Yes,
For the thin optics adapter design,
we want Peek 1/4-20 screw (part # 98885A131) |
|
|
6344
|
Thu Mar 1 09:26:50 2012 |
steve | Update | SUS | SOS baffle plates are ready | Green
welding glass 7" x 9"
shade #14 with 40 mm hole and mounting fixtures |
|
|
14032
|
Thu Jun 28 16:48:27 2018 |
gautam | Update | SUS | SOS cage towers | For the upcoming vent, we'd like to
rotate the SOS towers to correct for the
large YAW bias voltages used for DC alignment |
|
|
7331
|
Fri Aug 31 17:50:41 2012 |
Steve | Update | SUS | SOS centering target | The SOS centering target is 1.9 mm lower than it should
be! |
|
|
7469
|
Wed Oct 3 15:58:57 2012 |
Steve | Configuration | IOO | SOS coil drivers moved | The SOS coil drivers (Atm2) were moved
from 1X1 to 1Y2 location. Is this the best
place to locate the IOO Tip-Tilt steering |
|
|
6039
|
Tue Nov 29 17:10:39 2011 |
Den | Update | digital noise | SOS creation | One of the possibilities that we see a
large low-frequency digital noise is due
to Foton. I've checked the SOS coefficients |
|
|
12264
|
Thu Jul 7 09:13:54 2016 |
Steve | Update | SUS | SOS gluing fixture | Atm 1,
It's right arm is perfect.
Atm 3-4, The left one has bended |
|