| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16286
|
Fri Aug 20 06:24:18 2021 |
Anchal | Update | CDS | Time synchornization not running | I read on some stack exchange that 'NTP
synchornized' indicator turns 'yes'
in the output of command timedatectl only |
|
|
16285
|
Fri Aug 20 00:28:55 2021 |
Anchal | Update | CDS | Time synchornization not running | I added ntpserver as a known host name
for address 192.168.113.201 (fb1's address
where ntp server is running) in the martian |
|
|
16284
|
Thu Aug 19 14:14:49 2021 |
Koji | Update | CDS | Time synchornization not running | 131.215.239.14 looks like Caltech's
NTP server (ntp-02.caltech.edu)
https://webmagellan.com/explore/caltech.edu/28415b58-837f-4b46-a134-54f4b81bee53 |
|
|
16283
|
Thu Aug 19 03:23:00 2021 |
Anchal | Update | CDS | Time synchornization not running | I tried to read a bit and understand the
NTP synchronization implementation in FE
computers. I'm quite sure that NTP synchronization |
|
|
16282
|
Wed Aug 18 20:30:12 2021 |
Anchal | Update | ASS | Fixed runASS scripts | Late elog:
Original time of work Tue Aug 17 20:30 2021
I locked the arms yesterday |
|
|
16281
|
Tue Aug 17 04:30:35 2021 |
Koji | Update | SUS | New electronics | Received:
Aug 17, 2021 2x ISC Whitening
Delivered 2x Sat Amp board to Todd |
|
|
16280
|
Mon Aug 16 23:30:34 2021 |
Paco | Update | CDS | AS WFS commissioning; restarting models | [koji, ian, tega, paco]
With the remote/local assistance
of Tega/Ian last friday I made changes on |
|
|
16279
|
Thu Aug 12 20:52:04 2021 |
Koji | Update | General | PSL shutter was closed this morning | I did a bit more investigation on this.
- I checked P1~P4, PTP2/3, N2,
TP2, TP3. But found only P1a and P2 were |
|
|
16278
|
Thu Aug 12 14:59:25 2021 |
Koji | Update | General | PSL shutter was closed this morning | What I was afraid of was the vacuum interlock.
And indeed there was a pressure surge this
morning. Is this real? Why didn't we |
|
|
16277
|
Thu Aug 12 11:04:27 2021 |
Paco | Update | General | PSL shutter was closed this morning | Thu Aug 12 11:04:42 2021 Arrived to find
the PSL shutter closed. Why? Who? When? How?
No elog, no fun. I opened it, IMC is now |
|
|
16276
|
Wed Aug 11 12:06:40 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | I redid the differential input experiment
using the DS360 function generator we recently
got. I generated a low frequency (0.1Hz) |
|
|
16275
|
Wed Aug 11 11:35:36 2021 |
Paco | Update | LSC | PRMI MICH orthogonality plan | [yehonathan, paco]
Yesterday we discussed a bit about
working on the PRMI sensing matrix. |
|
|
16274
|
Tue Aug 10 17:24:26 2021 |
paco | Update | General | Five day trend | Attachment 1 shows a five and a half day
minute-trend of the three temperature sensors.
Logging started last Thursday ~ 2 pm when |
|
|
16273
|
Mon Aug 9 10:38:48 2021 |
Anchal | Update | BHD | c1teststand subnetwork now accessible remotely | I had to add following two lines in the
/etc/network/interface file to make the special
ip routes persistent even after reboot: |
|
|
16272
|
Fri Aug 6 17:10:19 2021 |
Paco | Update | IMC | MC rollercoaster | [anchal, yehonatan, paco]
For whatever reason (i.e. we don't
really know) the MC unlocked into a weird |
|
|
16271
|
Fri Aug 6 13:13:28 2021 |
Anchal | Update | BHD | c1teststand subnetwork now accessible remotely | c1teststand subnetwork is now accessible
remotely. To log into this network, one needs
to do following: |
|
|
16270
|
Thu Aug 5 14:59:31 2021 |
Anchal | Update | General | Added temperature sensors at Yend and Vertex too | I've added the other two temperature
sensor modules on Y end (on 1Y4, IP: 192.168.113.241)
and in the vertex on (1X2, IP: 192.168.113.242). |
|
|
16269
|
Wed Aug 4 18:19:26 2021 |
paco | Update | General | Added infrasensing temperature unit to martian network | [ian, anchal, paco]
We hooked up the infrasensing unit
to power and changed its default IP address |
|
|
16268
|
Tue Aug 3 20:20:08 2021 |
Anchal | Update | Optical Levers | Recentered ETMX, ITMX and ETMY oplevs at good state | Late elog. Original time 08/02/2021 21:00.
I locked both arms and ran ASS
to reach to optimum alignment. ETMY PIT > |
|
|
16267
|
Mon Aug 2 16:18:23 2021 |
Paco | Update | ASC | AS WFS MICH commissioning | [anchal, paco]
We picked up AS WFS comissioning
for daytime work as suggested by gautam. |
|
|
16266
|
Thu Jul 29 14:51:39 2021 |
Paco | Update | Optical Levers | Recenter OpLevs | [yehonathan, anchal, paco]
Yesterday around 9:30 pm, we centered
the BS, ITMY, ETMY, ITMX and ETMX oplevs |
|
|
16265
|
Wed Jul 28 20:20:09 2021 |
Yehonathan | Update | General | The temperature sensors and function generator have arrived in the lab | I put the temperature sensors box on Anchal's
table (attachment 1) and the function generator
on the table in front of the c1auxey Acromag |
|
|
16264
|
Wed Jul 28 17:10:24 2021 |
Anchal | Update | LSC | Schnupp asymmetry | [Anchal, Paco]
I redid the measurement of Schnupp
asymmetry today and found it to be 3.8 cm |
|
|
16263
|
Wed Jul 28 12:47:52 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | To simulate a differential output I used
two power supplies connected in series. The
outer connectors were used as the outputs |
|
|
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 |
|
|
16261
|
Tue Jul 27 23:04:37 2021 |
Anchal | Update | LSC | 40 meter party | [ian, anchal, paco]
After our second attempt of locking
PRFPMI tonight, we tried to resotre XARM |
|
|
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. |
|
|
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) |
|
|
16257
|
Mon Jul 26 17:34:23 2021 |
Paco | Update | Loss Measurement | Loss measurement | [gautam, yehonathan, paco]
We went back to the loss data from
last week and more carefully estimated the |
|
|
16256
|
Sun Jul 25 20:41:47 2021 |
rana | Update | Loss Measurement | Loss measurement | What are the quantitative root causes for
why the statistical uncertainty is so large?
Its larger than 1/sqrt(N) |
|
|
16255
|
Sun Jul 25 18:21:10 2021 |
Koji | Update | General | Canon camera / small silver tripod / macro zoom lens / LED ring light returned / Electronics borrowed | Camera and accesories returned
One HAM-A coildriver and one sat
amp borrowed -> QIL |
|
|
16254
|
Thu Jul 22 16:06:10 2021 |
Paco | Update | Loss Measurement | Loss measurement | [yehonathan, anchal, paco, gautam]
We concluded estimating the XARM
and YARM losses. The hardware configuration |
|
|
16253
|
Wed Jul 21 18:08:35 2021 |
yehonathan | Update | Loss Measurement | Loss measurement | {Gautam, Yehonathan, Anchal, Paco}
We prepared for the loss measurement
using DC reflection method. We did the following |
|
|
16252
|
Wed Jul 21 14:50:23 2021 |
Koji | Update | SUS | New electronics | Received:
Jun 29, 2021 BIO I/F 6 units
Jul 19, 2021 PZT Drivers x2 / QPD |
|
|
16251
|
Mon Jul 19 22:16:08 2021 |
paco | Update | LSC | PRFPMI locking | [gautam, paco]
Gautam managed to lock PRFPMI a
little before ~ 22:00 local time. The ALS |
|
|
16250
|
Sat Jul 17 00:52:33 2021 |
Koji | Update | General | Canon camera / small silver tripod / macro zoom lens / LED ring light borrowed -> QIL | Canon camera / small silver tripod / macro
zoom lens / LED ring light borrowed ->
QIL |
|
|
16249
|
Fri Jul 16 16:26:50 2021 |
gautam | Update | Computers | Docker installed on nodus | I wanted to try hosting some docker images
on a "private" server, so I installed
Docker on nodus following the instructions |
|
|
16248
|
Thu Jul 15 14:25:48 2021 |
Paco | Update | LSC | CM board | [gautam, paco]
We tested the CM board by implementing
the high bandwidth IR lock (single arm). |
|
|
16247
|
Wed Jul 14 20:42:04 2021 |
gautam | Update | LSC | Locking | [paco, gautam]
we decided to give the PRFPMI lock
a go early-ish. Summary of findings today |
|
|
16246
|
Wed Jul 14 19:21:44 2021 |
Koji | Update | General | Brrr | Jordan reported on Jun 18, 2021:
"HVAC tech came today, and replaced |
|
|
16245
|
Wed Jul 14 16:19:44 2021 |
gautam | Update | General | Brrr | Since the repair work, the temperature
is significantly cooler. Surprisingly, even
at the vertex (to be more specific, inside |
|
|
16244
|
Mon Jul 12 18:06:25 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | I edited /cvs/cds/caltech/target/c1auxey1/ETMYaux.db
(after creating a backup) and added the spare
coil driver channels. |
|
|
16243
|
Fri Jul 9 18:35:32 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | Following Koji's channel list review,
we made changes to the
wiring spreadsheet. |
|
|
16242
|
Fri Jul 9 15:39:08 2021 |
Anchal | Summary | ALS | Single Arm Actuation Calibration with IR ALS Beat [Correction] | I did this analysis again by just doing
demodulation go 5s time segments of the 60s
excitation signal. The major difference is |
|
|
16241
|
Thu Jul 8 11:20:38 2021 |
Anchal, Paco, Gautam | Summary | LSC | PRFPMI locking attempts | Last night Gautam walked us through the
algorithm used to lock PRFPMI. We tried it
several times with the PSL HEPA filter off |
|
|
16240
|
Tue Jul 6 17:40:32 2021 |
Koji | Summary | General | Lab cleaning | We held the lab cleaning for the
first time since the campus reopening (Attachment
1). |
7x |
|
16239
|
Tue Jul 6 16:35:04 2021 |
Anchal, Paco, Gautam | Update | IOO | Restored MC | We found that megatron is unable to properly
run scripts/MC/WFS/mcwfsoff and scripts/MC/WFS/mcwfson
scripts. It fails cdsutils commands due to |
|
|
16238
|
Tue Jul 6 10:47:07 2021 |
Paco, Anchal | Update | IOO | Restored MC | MC was unlocked and struggling to recover
this morning due to misguided WFS offsets.
In order to recover from this kind of issue, |
|
|
16237
|
Fri Jul 2 12:42:56 2021 |
Anchal, Paco, Gautam | Summary | LSC | snap file changed for MICH | We corrected the MICH locking snap file
C1configure_MI.req and saved an updated C1configure_MI.snap.
Now the 'Restore MICH' script in |
|
|
16236
|
Thu Jul 1 16:55:21 2021 |
Anchal | Summary | Optical Levers | Fixed Centeringoptical levers PRM | This was a mistake. When arms are locked,
PRM is misaligned by setting -800 offset
in PIT dof of PRM. The oplev is set to function |
|