| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16436
|
Wed Oct 27 19:34:52 2021 |
Koji | Summary | Electronics | New electronics racks | 1. The rack we cleaned today (came from
West Bridge) will be placed between 1X3 and
1X4, right next to 1X4 (after removing the |
|
|
16437
|
Thu Oct 28 16:32:32 2021 |
Paco | Summary | BHD | Part IV of BHR upgrade - Removal of BSC eastern optics | [Ian, Paco, Anchal]
We turned off the BSC oplev laser
by turning the key counterclockwise. Ian |
|
|
16438
|
Thu Oct 28 17:01:54 2021 |
Anchal | Summary | BHD | Part III of BHR upgrade - Adding temp fixed flat mirror for PR2 | [Anchal, Paco, Ian]
We added a Y1-2037-0 mirror
(former IPPOS SM2 mirror) on a fixed mount |
|
|
16440
|
Fri Oct 29 14:39:37 2021 |
Anchal | Summary | BHD | 1Y1 cleared. IY3 ready for C1SUS2 I/O and FE. | [Anchal, Paco]
We cleared 1Y1 rack today removing
the following items. This stuff is sitting |
|
|
16444
|
Tue Nov 2 16:42:00 2021 |
Paco | Summary | BHD | 1Y1 rack work | [paco, ian]
After the new 1Y0 rack was placed
near the 1Y1 rack by Chub and Anchal, today |
|
|
16447
|
Wed Nov 3 16:55:23 2021 |
Ian MacMillan | Summary | SUS | SUS Plant Plan for New Optics | [Ian, Tega, Raj]
This is the rough plan for the
testing of the new suspension models with |
|
|
16448
|
Thu Nov 4 15:03:43 2021 |
Koji | Summary | BHD | 1Y1 rack work | I have visited the binder file for the
40m wiring file in the control room.
The 12V power supply on 1Y1 is for |
|
|
16450
|
Fri Nov 5 12:21:16 2021 |
Anchal | Summary | BHD | Part VI of BHR upgrade - Removal of ITMYC optics | Today I opened the ITMY chamber and removed
the following optics and placed them in Xend
flow bench (See attachment 1-3 for updated |
|
|
16453
|
Mon Nov 8 10:13:52 2021 |
Paco | Summary | BHD | 1Y1 rack work; Sorensens removed | [Paco, Chub]
Removed all sorensen power supplies
from this rack except for 12 VDC one; that |
|
|
16454
|
Mon Nov 8 13:13:00 2021 |
Koji | Summary | BHD | 1Y1 rack work; Sorensens removed | Updated the rack layout. Now there is an
issue.
We were supposed to have 1U space |
|
|
16455
|
Mon Nov 8 15:29:05 2021 |
Paco | Summary | BHD | 1Y1 rack work; New power for cameras | [Paco, Anchal]
In reference to Koji's concern
(see previous elog), we have completely removed |
|
|
16458
|
Mon Nov 8 18:42:38 2021 |
Koji | Summary | BHD | Rack Layout / Power Strips |
Rack
|
|
|
16460
|
Tue Nov 9 13:40:02 2021 |
Ian MacMillan | Summary | Computer Scripts / Programs | SUS Plant Plan for New Optics | [Ian, Tega]
After talking with Rana we have
an updated plan. We will be working on this |
|
|
16461
|
Tue Nov 9 16:55:52 2021 |
Ian MacMillan | Summary | Computer Scripts / Programs | SUS Plant Plan for New Optics | [Ian, Tega]
We have moved c1sim computer from
the test stand to the server rack in the |
|
|
16462
|
Tue Nov 9 18:05:03 2021 |
Ian MacMillan | Summary | Computer Scripts / Programs | SUS Plant Plan for New Optics | [Ian, Tega]
Now that the computer is in its
new rack I have copied over the filter two |
|
|
16463
|
Tue Nov 9 19:02:47 2021 |
Anchal | Summary | BHD | 1Y0 Populated and 1Y1,1Y0 powered | [Anchal, Paco]
Today we populated 4 Sat Amp boxes
for LO1, Lo2, AS1, and AS4, 2 BO boxes for |
|
|
16464
|
Thu Nov 11 00:11:39 2021 |
Koji | Summary | SUS | 2" to 3" sleeve issue | Yehonathan and Tega found that the new
PR3 and SR3 delivered in 2020 is in fact 3/4" |
6x |
|
16466
|
Mon Nov 15 15:12:28 2021 |
Ian MacMillan | Summary | Computer Scripts / Programs | SUS Plant Plan for New Optics | [Ian, Tega]
We are working on three fronts
for the suspension plant model: |
|
|
16469
|
Tue Nov 16 17:29:49 2021 |
Ian MacMillan | Summary | Computer Scripts / Programs | SUS Plant Plan for New Optics | [Ian, Tega]
Updated A, B, C, D matrices for
the state-space model to remove bugs in the |
|
|
16475
|
Thu Nov 18 14:29:01 2021 |
Koji | Summary | BHD | BHD invac optics / opto-mechanics | I |
|
|
16477
|
Thu Nov 18 20:00:43 2021 |
Ian MacMillan | Summary | Computer Scripts / Programs | SUS Plant Plan for New Optics | [Ian, Raj, Tega]
Here is the comparison between |
|
|
16478
|
Mon Nov 22 16:38:26 2021 |
Tega | Summary | Computer Scripts / Programs | SUS Plant Plan for New Optics | [Tega, Ian]
TODO
1. Investigate cross-coupling |
|
|
16481
|
Wed Nov 24 11:02:23 2021 |
Ian MacMillan | Summary | Computers | Quantization Noise Calculation Summary | I added mpmath
to the quantization noise code. mpmath allows
me to specify the precision that I am using |
|
|
16482
|
Wed Nov 24 13:44:19 2021 |
rana | Summary | Computers | Quantization Noise Calculation Summary | This looks great. I think what we want
to see mainly is just the noise in the 32
bit IIR filtering subtracted from the 64 |
|
|
16492
|
Tue Dec 7 10:55:25 2021 |
Ian MacMillan | Summary | Computers | Quantization Noise Calculation Summary | [Ian, Tega]
Tega and I have gone through the
IIR |
|
|
16498
|
Fri Dec 10 13:02:47 2021 |
Ian MacMillan | Summary | Computers | Quantization Noise Calculation Summary | I am trying to replicate the simulation
done by Matt Evans in his
presentation (see Attachment |
|
|
16502
|
Fri Dec 10 21:35:15 2021 |
Koji | Summary | SUS | Vertex SUS DAC adapter ready | 4 units of Vertex SUS DAC adapter (https://dcc.ligo.org/LIGO-D2100035)
ready.
https://dcc.ligo.org/LIGO-S2101689 |
|
|
16509
|
Wed Dec 15 16:11:38 2021 |
Anchal | Summary | BHD | Part VIII of BHR upgrade - Placed LO1 | [Anchal, Yehonathan, Paco]
Today we opened ITMX chamber
and removed the following optics and placed |
|
|
16510
|
Wed Dec 15 17:44:18 2021 |
Koji | Summary | BHD | Part VIII of BHR upgrade - Placed LO1 | If ITMX already has another side magnet,
we can migrate the side OSEM of ITMX to the
other side. This way, the interference of |
|
|
16530
|
Tue Dec 21 16:52:39 2021 |
Anchal | Summary | Electronics | In-air Sat Amp to Vacuum Flange cables laid for 7 new SOS | [Anchal, Yehonathan, Chub]
We today laid down 14 70 ft long
DB25 cables from 1Y1 (6), 1Y0 (8) to ITMY |
|
|
16533
|
Wed Dec 22 17:40:22 2021 |
Anchal | Summary | CDS | c1su2 model updated with SUS damping blocks for 7 SOSs | [Anchal, Koji]
I've updated the c1su2 model
today with model suspension blocks for the |
|
|
16537
|
Wed Dec 29 20:09:40 2021 |
rana | Summary | CDS | c1su2 model updated with SUS damping blocks for 7 SOSs | We want to maintain the 16 kHz sample rate
for the COIL DAQ channels, but nothing wrong
with reducing the others. |
|
|
16545
|
Thu Jan 6 11:54:20 2022 |
Anchal | Summary | BHD | Part IX of BHR upgrade - Placed AS1 and AS4 | [Paco (Vacuum Work), Anchal]
Today we opened the ITMY Chamber
and installed suspended AS1 and AS4 in their |
|
|
16552
|
Thu Jan 6 21:04:41 2022 |
Anchal | Summary | BHD | Part VIII of BHR upgrade - LO1 OSEMs inserted | [Anchal, Koji] Part of elog:
40m/16549.
The magnets on the mirror face |
|
|
16554
|
Fri Jan 7 16:17:42 2022 |
Anchal | Summary | BHD | Part IX of BHR upgrade - Placed AS1 and AS4 filters | [paco]
Added input filters, input matrix,
damping filters, output matrix, coil filters, |
|
|
16559
|
Sat Jan 8 16:01:42 2022 |
Paco | Summary | BHD | Part IX of BHR upgrade - Placed LO2 filters | Added input filters, input matrix, damping
filters, output matrix, coil filters, and
copy the state over from ITMX into LO2 |
|
|
16562
|
Mon Jan 10 14:52:51 2022 |
Anchal | Summary | BHD | LO1 OSEMs roughly calibrated and noise measured | I used the open light level output of 908
for ITMX side OSEM from 40m/16549
to roughly calibrate cts2um filter module |
|
|
16567
|
Mon Jan 10 18:36:41 2022 |
Anchal | Summary | BHD | LO1 free swinging test set to trigger | LO1 is set to go through a free swinging
test at 1 am tonight. We have used this script
(scripts/SUS/InMatCalc/freeSwing.py) reliably |
|
|
16572
|
Tue Jan 11 12:19:12 2022 |
Anchal | Summary | BHD | LO1 Input Matrix Diagonalization performed. | The frree swinging test was successful.
I ran the input matrix diagonalization code
(scripts/SUS/InMAtCalc/sus_diagonalization.py) |
|
|
16577
|
Tue Jan 11 18:18:29 2022 |
Anchal | Summary | BHD | Attempted OSEM installation on AS1 | [Anchal, Paco, Yehonathan]
Connected in-cir cable to new flange
on ITMY Chamber |
|
|
16578
|
Tue Jan 11 18:40:25 2022 |
Anchal | Summary | BHD | AS1 Sat Amp has a PCB issue | AS1
Sat Amp (S2100741) has a critical PCB
issue on it's Ch5-8 board S2100548. This |
|
|
16579
|
Thu Jan 13 09:48:41 2022 |
Anchal | Summary | BHD | AS1 Sat Amp fixed | I fixed the issue in AS1
Sat Amp (S2100741) by using a razor blade.
I cut the short between the two places, cleaned |
|
|
16580
|
Thu Jan 13 12:24:08 2022 |
Anchal | Summary | BHD | AS1 SD and LR magnets broke | [Anchal (vacuum work), Paco (outside)]
After the AS1 Sat Amp fix (40m/16579),
we today were able to tune all OSEMs to the |
|
|
16581
|
Thu Jan 13 12:29:27 2022 |
Anchal | Summary | BHD | AS4 LR magnet broke | After the debacle with AS1 (40m/16580),
we decided the put the PEEK earthquake stop
by first removing the lower OSEM plate and |
|
|
16590
|
Fri Jan 14 18:12:47 2022 |
Anchal | Summary | BHD | AS4 placed in ITMY Chamber, OSEMs connected | AS4 was succesfully suspended and trasported
to ITMY chamber (40m/16589).
We placed it near the door to make it easy |
|
|
16591
|
Tue Jan 18 14:26:09 2022 |
Paco | Summary | BHD | Part IX of BHR upgrade - Placed remaining filters SR2, PR3, PR2 | [Anchal, Paco]
Added input filters, input matrix,
damping filters, output matrix, coil filters, |
|
|
16592
|
Tue Jan 18 15:19:49 2022 |
Paco | Summary | BHD | Part IV of BHR upgrade - Replaced old SR3 with SOS SR2. OSEM tuning attemtped. | [Tega, Anchal, Paco]
We started working on SR2 installation.
Preliminary work involved |
|
|
16593
|
Tue Jan 18 18:16:28 2022 |
Anchal | Summary | BHD | Part IV of BHR upgrade - SR2 Sat Amp Box inspection | I tested the monitor ports on the SR2
Sat Amp Box but found that all LED Mon
and PD Mon are giving expected values. I |
|
|
16594
|
Tue Jan 18 18:19:22 2022 |
Koji | Summary | BHD | AS4 placed in ITMY Chamber, OSEMs connected | AS4 satellite amplifier D1002818
/ D080276 troubleshoot
I dug into the circuit to see what/where |
|
|
16595
|
Wed Jan 19 12:50:10 2022 |
Anchal | Summary | BHD | Part IV of BHR upgrade - SR2 OSEM tuning progress. | It was indeed the issue of the top OSEM
plate not being in the right place horizontally.
But the issue was more non-trivial. I believe |
|