ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16342
|
Fri Sep 17 20:22:55 2021 |
Koji | Update | SUS | EQ M4.3 Long beach | EQ M4.3 @longbeach
2021-09-18 02:58:34 (UTC) / 07:58:34
(PDT) |
|
|
16343
|
Mon Sep 20 12:20:31 2021 |
Paco | Summary | SUS | PRM and BS Angular Actuation transfer function magnitude measurements | [yehonathan, paco, anchal]
We attempted to find any symptoms
for actuation problems in the PRMI configuration |
|
|
16344
|
Mon Sep 20 14:11:40 2021 |
Koji | Update | BHD | End DAC Adapter Unit D2100647 | I've uploaded the schematic and PCB
PDF for End DAC Adapter Unit D2100647.
Please review the design. |
|
|
16345
|
Mon Sep 20 14:22:00 2021 |
rana | Summary | SUS | PRM and BS Angular Actuation transfer function magnitude measurements | I suggest plotting all the traces in the
plot so we can see their differences. Also
remove the 1/f^2 slope so that we can see |
|
|
16346
|
Mon Sep 20 15:23:08 2021 |
Yehonathan | Update | Computers | Wifi internet fixed | Over the weekend and today, the wifi was
acting bad with frequent disconnections and
no internet access. I tried to log into the |
|
|
16348
|
Mon Sep 20 15:42:44 2021 |
Ian MacMillan | Summary | Computers | Quantization Code Summary | This post serves as a summary and description
of code
to run to test the impacts of quantization |
|
|
16349
|
Mon Sep 20 20:43:38 2021 |
Tega | Update | Electronics | Sat Amp modifications | Running update of Sat Amp modification
work, which involves the following procedure (x8)
per unit: |
|
|
16350
|
Mon Sep 20 21:56:07 2021 |
Koji | Update | Computers | Wifi internet fixed | Ug, factory resets... Caltech IMSS announced
that there was an intermittent network service
due to maintenance between Sept 19 and 20. |
|
|
16351
|
Tue Sep 21 11:09:34 2021 |
Anchal | Summary | CDS | XARM YARM UGF Servo and Oscillators added | I've updated the c1LSC simulink model
to add the so-called UGF servos in the XARM
and YARM single arm loops as well. These |
|
|
16352
|
Tue Sep 21 11:13:01 2021 |
Paco | Summary | Calibration | XARM calibration noise | Here are some plots from analyzing the
C1:LSC-XARM calibration. The experiment is
done with the XARM (POX) locked, a single |
|
|
16353
|
Wed Sep 22 11:43:04 2021 |
rana | Summary | Calibration | XARM calibration noise | I would expect to see some lower frequency
effects. i.e. we should look at the timeseries
of the demod with the excitation on and off. |
|
|
16354
|
Wed Sep 22 12:40:04 2021 |
Anchal | Summary | CDS | XARM YARM UGF Servo and Oscillators shifted to OAF | To reduce burden on c1lsc, I've shifted
the added UGF block to to c1oaf model. c1lsc
had to be modified to allow addition of an |
|
|
16355
|
Wed Sep 22 14:22:35 2021 |
Ian MacMillan | Summary | Computers | Quantization Noise Calculation Summary | Now that we have a model of how the SS
and IIR filters work we can get to the problem
of how to measure the quantization noise |
|
|
16356
|
Wed Sep 22 17:22:59 2021 |
Tega | Update | Electronics | Sat Amp modifications | [Koji, Tega]
Decided to do a quick check of |
|
|
16357
|
Thu Sep 23 14:17:44 2021 |
Tega | Update | Electronics | Sat Amp modifications debugging update | Debugging complete.
All units now have the correct
TP4 voltage reading needed to drive a |
|
|
16358
|
Thu Sep 23 15:29:11 2021 |
Paco | Summary | SUS | PRM and BS Angular Actuation transfer function magnitude measurements | [Anchal, Paco]
We had a second go at this with
an increased number of averages (from 10 |
|
|
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 |
|
|
16360
|
Mon Sep 27 12:12:15 2021 |
Ian MacMillan | Summary | Computers | Quantization Noise Calculation Summary | I have not been able to figure out a way
to make the system that Aaron and I talked
about. I'm not even sure it is possible |
|
|
16361
|
Mon Sep 27 16:03:15 2021 |
Ian MacMillan | Summary | Computers | Quantization Noise Calculation Summary | I have coded up the procedure in the previous
post: The result does not look like what
I would expect. |
|
|
16362
|
Mon Sep 27 17:04:43 2021 |
rana | Summary | Computers | Quantization Noise Calculation Summary | I suggest that you
change the corner frequency
to 10 Hz as I suggested last week. This filter, |
|
|
16363
|
Tue Sep 28 16:31:52 2021 |
Paco | Summary | Calibration | XARM OLTF (calibration) at 55.511 Hz | [anchal, paco]
Here is a demonstration of the
methods leading to the single (X)arm calibration |
|
|
16364
|
Wed Sep 29 09:36:26 2021 |
Jordan | Update | SUS | 2" Adapter Ring Parts for SOS Arrived 9/28/21 | The remaining machined parts for the SOS
adapter ring have arrived. I will inspect
these today and get them ready for C&B. |
|
|
16365
|
Wed Sep 29 17:10:09 2021 |
Anchal | Summary | CDS | c1teststand problems summary | [anchal, ian]
We went and collected some information
for the overlords to fix the c1teststand |
|
|
16366
|
Thu Sep 30 11:46:33 2021 |
Ian MacMillan | Summary | Computers | Quantization Noise Calculation Summary | First and foremost I have the updated bode
plot with the mode moved to 10 Hz. See Attachment
1. Note that the comparison measurement is |
|
|
16367
|
Thu Sep 30 14:09:37 2021 |
Anchal | Summary | CDS | New way to ssh into c1teststand | Late elog, original time
Wed Sep 29 14:09:59 2021
We opened a new port (22220) in |
|
|
16368
|
Thu Sep 30 14:13:18 2021 |
Anchal | Update | LSC | HV supply to Xend Green laser injection mirrors M1 and M2 PZT restored | Late elog, original date Sep 15th
We found that the power switch
of HV supply that powers the PZT drivers |
|
|
16369
|
Thu Sep 30 18:04:31 2021 |
Paco | Summary | Calibration | XARM OLTF (calibration) with three lines | [anchal, paco]
We repeated the same procedure
as before, but with 3 different lines at |
|
|
16370
|
Fri Oct 1 12:12:54 2021 |
Stephen | Update | BHD | ITMY (3002) CAD layout pushed to Box | Koji requested current state of BHD 3D
model. I pushed this to Box after adding
the additional SOSs and creating an EASM |
|
|
16371
|
Fri Oct 1 14:25:27 2021 |
yehonathan | Summary | SUS | PRM and BS Angular Actuation transfer function magnitude measurements | {Paco, Yehonathan, Hang}
We measured the sensing PRMI sensing
matrix. Attachment 1 shows the results, the |
|
|
16372
|
Mon Oct 4 11:05:44 2021 |
Anchal | Summary | CDS | c1teststand problems summary | [Anchal, Paco]
We tried to fix the ntp synchronization
in c1teststand today by repeating the steps |
|
|
16373
|
Mon Oct 4 15:50:31 2021 |
Hang | Update | Calibration | Fisher matrix estimation on XARM parameters | [Anchal, Hang]
What: Anchal and I measured the
XARM OLTF last Thursday. |
|
|
16374
|
Mon Oct 4 16:00:57 2021 |
Yehonathan | Summary | SUS | PRM and BS Angular Actuation transfer function magnitude measurements | {Yehonathan, Anchel}
In an attempt to fix the actuation
of the PRMI DOFs we set to modify the output |
|
|
16375
|
Mon Oct 4 16:10:09 2021 |
rana | Summary | SUS | PRM and BS Angular Actuation transfer function magnitude measurements | not sure that this is necessary.
If you look at teh previous entries Gautam
made on this topic, it is clear that the |
|
|
16376
|
Mon Oct 4 18:00:16 2021 |
Koji | Summary | CDS | c1teststand problems summary | I don't know anything about
mx/open-mx, but you also need open-mx,don't
you? |
|
|
16377
|
Mon Oct 4 18:35:12 2021 |
Paco | Update | Electronics | Satellite amp box adapters | [Paco]
I have finished assembling the
1U adapters from 8 to 5 DB9 conn. for the |
|
|
16378
|
Mon Oct 4 20:46:08 2021 |
Koji | Update | Electronics | Satellite amp box adapters | Thanks. You should be able to find the
chassis-related hardware on the left side
of the benchtop drawers at the middle workbench. |
|
|
16379
|
Mon Oct 4 21:58:17 2021 |
Tega | Update | Electronics | Sat Amp modifications | Trying to finish 2 more Sat Amp units so
that we have the 7 units needed for the X-arm
install. |
|
|
16380
|
Tue Oct 5 17:01:20 2021 |
Koji | Update | Electronics | Sat Amp modifications | Make sure the inputs for the PD amps are
open. This is the current amplifier and we
want to leave the input pins open for the |
|
|
16381
|
Tue Oct 5 17:58:52 2021 |
Anchal | Summary | CDS | c1teststand problems summary | open-mx service is running successfully
on the fb1(clone), c1bhd and c1sus.
|
|
|
16382
|
Tue Oct 5 18:00:53 2021 |
Anchal | Summary | CDS | c1teststand time synchronization working now | Today I got a new router that I used to
connect the c1teststand, fb1 and chiara.
I was able to see internet access in c1teststand |
|
|
16383
|
Tue Oct 5 20:04:22 2021 |
Paco | Summary | SUS | PRM and BS Angular Actuation transfer function magnitude measurements | [Paco, Rana]
We had a look at the BS actuation.
Along the way we created a couple of issues |
|
|
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. |
|
|
16385
|
Wed Oct 6 15:39:29 2021 |
Anchal | Summary | SUS | PRM and BS Angular Actuation transfer function magnitude measurements | Note that your tests were done with the
output matrix for BS and PRM in the compensated
state as done in 40m/16374. |
|
|
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. |
|
|
16391
|
Mon Oct 11 17:31:25 2021 |
Anchal | Summary | CDS | Fixed mounting of mx devices in fb. daqd_dc is running now. |
|
|
|
16392
|
Mon Oct 11 18:29:35 2021 |
Anchal | Summary | CDS | Moving forward? | The teststand has some non-trivial issue
with Myrinet card (either software or hardware)
which even teh experts are saying they don't |
|