| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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. |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
16356
|
Wed Sep 22 17:22:59 2021 |
Tega | Update | Electronics | Sat Amp modifications | [Koji, Tega]
Decided to do a quick check of |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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: |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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 |
|
|
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) |
|
|
16341
|
Fri Sep 17 00:56:49 2021 |
Koji | Update | General | Awesome | The
Incredible Melting Man!
|
|
|
16340
|
Thu Sep 16 20:18:13 2021 |
Anchal | Update | General | Reset | Fridge brought back inside.
|
|
|
16339
|
Thu Sep 16 14:08:14 2021 |
Ian MacMillan | Frogs | | Tour | I gave some of the data analysts a look
around because they asked and nothing was
currently going on in the 40m. Nothing was |
|
|
16338
|
Thu Sep 16 12:06:17 2021 |
Tega | Update | Computer Scripts / Programs | Temperature sensors added to the summary pages | We can now view the minute trend of the
temperature sensors under the PEM tab
of the summary pages. See attachment 1 for |
|
|
16337
|
Thu Sep 16 10:07:25 2021 |
Anchal | Update | General | Melting 2 | Put outside.
|
|
|
16336
|
Thu Sep 16 01:16:48 2021 |
Koji | Update | General | Frozen 2 | It happened again. Defrosting required. |
|
|
16335
|
Thu Sep 16 00:00:20 2021 |
Koji | Update | General | RIO Planex 1064 Lasers in the south cabinet | RIO Planex 1064 Lasers in the south cabinet
Property Number C30684/C30685/C30686/C30687 |
|
|
16334
|
Wed Sep 15 23:53:54 2021 |
Koji | Summary | General | Towards the end upgrade | Ordered compoenents are in.
- Made 36 more Sat Amp internal
boards (Attachment 1). Now |
|
|
16333
|
Wed Sep 15 23:38:32 2021 |
Koji | Update | ALS | ALS ASX PZT HV was off -> restored | It was known that the Y end ALS PZTs are
not working. But Anchal reported in the meeting
that the X end PZTs are not working too. |
|
|
16332
|
Wed Sep 15 11:27:50 2021 |
Yehonathan | Update | CDS | c1auxey assembly | {Yehonathan, Paco}
We turned off the ETMX watchdogs
and OpLevs. We went to the X end and shut |
|
|
16331
|
Tue Sep 14 19:12:03 2021 |
Koji | Summary | PEM | Excess seismic noise in 0.1 - 0.3 Hz band | Looks like this increase is correlated
for BS/EX/EY. So it is likely to be real.
Comparison between 9/15 |
|
|
16330
|
Tue Sep 14 17:22:21 2021 |
Anchal | Update | CDS | Added temp sensor channels to DAQ list | [Tega, Paco, Anchal]
We attempted to reboot fb1 daqd
today to get the new temperature sensor channels |
|
|
16329
|
Tue Sep 14 17:19:38 2021 |
Paco | Summary | PEM | Excess seismic noise in 0.1 - 0.3 Hz band | For the past couple of days the 0.1 to
0.3 Hz RMS seismic noise along BS-X has increased.
Attachment 1 shows the hour trend in the |
|
|
16328
|
Tue Sep 14 17:14:46 2021 |
Koji | Update | SUS | SOS Tower Hardware | Yup this is OK. No problem.
|
|
|
16327
|
Tue Sep 14 16:44:54 2021 |
jamie | Frogs | CDS | fb1 /var full after reboot, caused all sorts of problems | Jonathan Hanks pointed me to this fix to
the gpstime kernel module that was unfortunately
put in after the 3.4 release that we're |
|
|
16326
|
Tue Sep 14 16:12:03 2021 |
Jordan | Update | SUS | SOS Tower Hardware | Yehonathan noticed today that the silver
plated hardware on the assembled SOS towers
had some pretty severe discoloration on it. |
|
|
16325
|
Tue Sep 14 15:57:05 2021 |
jamie | Frogs | CDS | fb1 /var full after reboot, caused all sorts of problems | /var on fb1 filled up today, which caused
all sorts of CDS issues. I found out
about the problem by reading the logs of |
|
|
16324
|
Mon Sep 13 18:19:25 2021 |
Tega | Update | Computer Scripts / Programs | Moved modbus service from chiara to c1susaux | [Tega, Anchal, Paco]
After talking to Anchal, it was
made clear that chiara is not the place to |
|
|
16323
|
Mon Sep 13 17:05:04 2021 |
Tega | Summary | PEM | Infrasensing temperature sensor modbus configuration | Anchal mentioned it would be good to put
more details about how I arrived at the values
needed to configure the modbus drive for |
|
|
16322
|
Mon Sep 13 15:14:36 2021 |
Anchal | Update | LSC | Xend Green laser injection mirrors M1 and M2 not responsive | I was showing some green laser locking
to Tega, I noticed that changing the PZT
sliders of M1/M2 angular position on Xend |
|
|
16321
|
Mon Sep 13 14:32:25 2021 |
Yehonathan | Update | CDS | c1auxey assembly | So we agreed that the RTNs points on the
c1auxex Acromag chassis should just be grounded
to the local Acromag ground as it just needs |
|
|
16320
|
Mon Sep 13 09:15:15 2021 |
Paco | Update | LSC | MC unlocked? | Came in at ~ 9 PT this morning to find
the IFO "down". The IMC had lost
its lock ~ 6 hours before, so at about 03:00 |
|
|
16319
|
Mon Sep 13 04:12:01 2021 |
Tega | Update | General | Added temperature sensors at Yend and Vertex too | I finally got the modbus part working on
chiara, so we can now view the temperature
data on any machine on the martian network, |
|
|
16318
|
Thu Sep 9 09:54:41 2021 |
Stephen | Summary | BHD | BHD OMC invacuum wiring - cable lengths | [Koji, Stephen - updated 30 September]
Cable lengths task - in vacuum
cabling for the green section (new, custom |
|
|
16317
|
Wed Sep 8 19:06:14 2021 |
Koji | Update | General | Backup situation | Tega mentioned in the meeting that it could
be safer to separate some of nodus's
functions from the martian file system. |
|
|
16316
|
Wed Sep 8 18:00:01 2021 |
Koji | Update | VAC | cronjobs & N2 pressure alert | In the weekly meeting, Jordan pointed out
that we didn't receive the alert for
the low N2 pressure. |
|
|
16315
|
Tue Sep 7 18:00:54 2021 |
Tega | Summary | Calibration | System Identification via line injection | [paco]
This morning, I spent some time
restoring the jupyter notebook server running |
|
|
16314
|
Fri Sep 3 02:03:15 2021 |
Tega | Summary | Computers | Strip down large error files | Also deleted the ~50GB error files from
ldas to prevent rsync from copying them
to nodus again. With the new update to GWsumm, |
|
|
16313
|
Thu Sep 2 21:49:03 2021 |
Paco | Summary | Computers | chiara down, vac interlock tripped | [tega, paco]
We found the files that took excess
space in the chiara filesystem (see Attachment |
|
|
16312
|
Thu Sep 2 21:21:14 2021 |
Koji | Summary | Computers | Vacuum recovery 2 | Attachment 1:
We are pumping the main volume with
TP2. Once P1a reached the pressure ~2.2mtorr, |
|
|
16311
|
Thu Sep 2 20:47:19 2021 |
Koji | Update | CDS | Chiara DHCP restarted | [Paco, Tega, Koji]
Once chiara's DHCP is back,
things got much more straight forward. |
|