| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14154
|
Fri Aug 10 16:43:50 2018 |
gautam | Configuration | Upgrade | Parts list for BHD | Can we use the leakage
beam from MMT2 on the OMC table as the
LO beam? I can't find the spec for this |
|
|
14155
|
Sun Aug 12 10:59:34 2018 |
aaron | Configuration | Upgrade | Parts list for BHD | That seems fine, I wasn't thinking
of that beam. in that case could we just
have a PBS directly behind MMT2 and send |
|
|
14158
|
Mon Aug 13 17:20:07 2018 |
aaron | Configuration | Upgrade | Parts list for BHD | I've attached the diagram of what I
mean.
There are a couple caveats and |
|
|
14205
|
Fri Sep 21 09:59:09 2018 |
yuki | Configuration | ASC | Y end table upgrade plan | [Yuki, Gautam]
Attachments #1 is the current setup
of AUX Y Green locking and it has |
|
|
14212
|
Sun Sep 23 19:32:23 2018 |
yuki | Configuration | ASC | Y end table upgrade plan | [ Yuki, Gautam ]
The setup I designed before has
abrupt gouy phase shift between two steering |
|
|
14214
|
Mon Sep 24 11:09:05 2018 |
yuki | Configuration | ASC | Y end table upgrade plan | [ Yuki, Steve ]
With Steve's help, we checked
a new lens can be set soon after dichroic |
|
|
14216
|
Tue Sep 25 18:08:50 2018 |
yuki | Configuration | ASC | Y end table upgrade plan | [ Yuki, Gautam ]
We want to remotely control steeing
PZT mirrors so its driver is needed. |
|
|
14218
|
Thu Sep 27 14:02:55 2018 |
yuki | Configuration | ASC | PZT driver board verification | [ Yuki, Gautam ]
I fixed the input terminal that
had been off, and made sure PZT driver |
|
|
14219
|
Sun Sep 30 20:14:51 2018 |
yuki | Configuration | ASC | QPD calibration | [ Yuki, Gautam, Steve ]
Results:
I calibrated a QPD (D1600079, V1009) |
|
|
14220
|
Mon Oct 1 12:03:41 2018 |
not yuki | Configuration | ASC | PZT driver board verification | I assume this QPD set is a D1600079/D1600273
combo.
How much was the SUM output during |
|
|
14221
|
Mon Oct 1 13:33:55 2018 |
yuki | Configuration | ASC | QPD calibration |
Quote:
|
|
|
14222
|
Mon Oct 1 20:39:09 2018 |
gautam | Configuration | ASC | c1asy | We need to set up a copy of the c1asx |
|
|
14224
|
Tue Oct 2 18:50:53 2018 |
yuki | Configuration | ASC | PZT mirror calibration | [ Yuki, Gautam ]
I calibrated PZT mirrors. The ROUGH
result was attached. (Note that some errors and |
|
|
14226
|
Wed Oct 3 14:24:40 2018 |
yuki | Configuration | ASC | Y end table upgrade plan | Interim Procedure Report:
Purpose
The current setup of AUX Y-arm |
|
|
14227
|
Wed Oct 3 18:15:34 2018 |
yuki | Configuration | ASC | AI board improvement | [ Yuki, Gautam ]
I improved Anti-Imaging board (D000186-Rev.D),
which will be put between DAC port and |
|
|
14228
|
Thu Oct 4 00:44:50 2018 |
yuki | Configuration | ASC | AI board improvement | [ Yuki, Gautam ]
I made a cable which connects DAC
port (40 pins) and AI board (25 pins). I |
|
|
14230
|
Thu Oct 4 22:15:30 2018 |
yuki | Configuration | ASC | Y-end table upgrade | Before changing setup at Y-end table, I
measured the status value of the former setup
as follows. These values will be compared |
|
|
14231
|
Fri Oct 5 00:46:17 2018 |
Koji | Configuration | ASC | Y-end table upgrade | ???
The SHG crystal has the conversion
efficiency of ~2%W (i.e. if you have 1W input |
|
|
14232
|
Fri Oct 5 17:32:38 2018 |
yuki | Configuration | ASC | Y-end table upgrade | I measured it with the wrong setting of
a powermeter. The correct ones are here:
beam power going into doubling |
|
|
14233
|
Fri Oct 5 17:47:55 2018 |
gautam | Configuration | ASC | Y-end table upgrade | What
about just copying the Xend |
|
|
14234
|
Fri Oct 5 22:49:22 2018 |
yuki | Configuration | ASC | Y-end table upgrade | I designed a new layout. It has good mode-matching
efficiency, reasonable sensitivity to component
positions, good Gouy phase separation. I'm |
|
|
14235
|
Sun Oct 7 16:51:03 2018 |
gautam | Configuration | LSC | Yarm triggering changed | To facilitate Yuki's alignment of the
EY green beam into the Yarm cavity, I have changed |
|
|
14236
|
Sun Oct 7 22:30:42 2018 |
yuki | Configuration | LSC | Yarm Green locking was recovered | I finished installation of optics in the
Y-end and recovered green locking. Current
ALS-TRY_OUTPUT is about 0.25, which is lower |
|
|
14237
|
Mon Oct 8 00:46:35 2018 |
yuki | Configuration | ASC | Y-end table upgrade |
Quote:
|
|
|
14238
|
Mon Oct 8 18:56:52 2018 |
gautam | Configuration | ASC | c1asx filter coefficient file missing | While pointing Yuki to the c1asx servo
system, I noticed that the filter
file for c1asx is missing in the usual chans |
|
|
14239
|
Tue Oct 9 16:05:29 2018 |
gautam | Configuration | ASC | c1tst deleted, c1asy deployed. | Setting up c1asy:
Backed up old c1tst.mdl
as c1tst_old_bak.mdl in /opt/rtcds/userapps/release/cds/c1/models
Copied |
|
|
14240
|
Tue Oct 9 23:03:43 2018 |
yuki | Configuration | LSC | Yarm Green locking was recovered | [ Yuki, Gautam, Steve ]
To align the green beam in Y-end
these hardware were installed: |
|
|
14241
|
Wed Oct 10 12:38:27 2018 |
yuki | Configuration | LSC | All hardware was installed | I connected DAC - AIboard - PZTdriver -
PZT mirrors and made sure the PZT mirrors
were moving when changing the signal |
|
|
14257
|
Mon Oct 15 20:11:56 2018 |
yuki | Configuration | ASC | Y end table upgrade plan | Final Procedure Report for Green Locking
in YARM:
Purpose |
|
|
14260
|
Wed Oct 17 20:46:24 2018 |
yuki | Configuration | ASC | Y end table upgrade plan | To do for Green Locking in YARM:
The auto-alignment servo should
be completed. This servo requires many parameters |
|
|
14301
|
Fri Nov 16 15:09:31 2018 |
Steve | Configuration | VAC | not venting cryo and ion pumps | Notes on the ion pumps and cryo pump:
Our
4 ion pumps were closed off for a lomg time.
I estmated their pressure to be around ~1 |
|
|
14322
|
Tue Nov 27 17:06:51 2018 |
Steve | Configuration | VAC | Agilent 84FS turbo installed as TP2 | Chub & Steve, |
|
|
14382
|
Thu Jan 3 21:17:49 2019 |
rana | Configuration | Computers | Workstation Upgrade: Donatella -> Scientific Linux 7.2 | donatella was one of our last workstations
running ubuntu12. we installed SL7 on there
today |
|
|
14387
|
Mon Jan 7 11:54:12 2019 |
Jon | Configuration | Computer Scripts / Programs | Vac system shutdown | I'm making a controlled shutdown of
the vac controls to add new ADC channels.
Will advise when it's back up. |
|
|
14388
|
Mon Jan 7 19:21:45 2019 |
Jon | Configuration | Computer Scripts / Programs | Vac system shutdown | ADC work finished for the day. The vac
controls are back up, with all valves
CLOSED and all pumps OFF. |
|
|
14476
|
Fri Mar 8 08:40:26 2019 |
Anjali | Configuration | | Frequency stabilization of 1 micron source | The schematic of the homodyne configuration
is shown below.
Following are the list of components |
|
|
14664
|
Tue Jun 11 19:25:58 2019 |
aaron | Configuration | BHD | Reviving the single OMC BHD design? | I drew out some idea of how we might
use a single OMC to clean both paths of the
BHD after mixing, without being susceptible |
|
|
14672
|
Thu Jun 13 22:21:44 2019 |
Koji | Configuration | CDS | Paola wireless connected to martian | SURFs had trouble connecting paola to martian
via wireless.
Of course, it requires a fixed IP |
|
|
14685
|
Fri Jun 21 19:22:40 2019 |
Koji | Configuration | BHD | Reviving the single OMC BHD design? | I think a Faraday rotator rotates the polarizations
in a same way for both forward and backward
beam, and it's not like in this figure. |
|
|
14692
|
Mon Jun 24 13:48:36 2019 |
Kruthi | Configuration | CDS | Giada wireless connection | [Gautam, Kruthi]
This afternoon, Gautam helped me
setup Giada to access the GigE installed |
|
|
14767
|
Wed Jul 17 17:56:18 2019 |
Koji | Configuration | Computers | Gave resolv.conf to giada | Kruthi noticed that she could not login
to rossa from giada.
I checked /etc/resolv.conf and |
|
|
14812
|
Thu Jul 25 14:28:03 2019 |
gautam | Configuration | Computers | firewalld disabled for EPICS CA | I think rana did some more changes to this
workstation to make it useful for commissioning
activities - but the MEDM screens were still |
|
|
15085
|
Sun Dec 8 20:48:29 2019 |
rana | Configuration | Computers | Megatron: starts up grade | I noticed recently that Megatron was running
Ubuntu 12, so I've started
its OS upgrade. |
|
|
15095
|
Wed Dec 11 22:01:24 2019 |
rana | Configuration | Computers | Megatron: starts up grade | Megatron is now running Ubuntu 18.04
LTS.
We should probably be able to load |
|
|
15117
|
Mon Jan 13 15:47:37 2020 |
shruti | Configuration | Computer Scripts / Programs | c1psl burt restore | [Yehonathan, Jon, Shruti]
Since the PMC would not lock, we
initially burt-restored the c1psl machine |
|
|
15125
|
Wed Jan 15 14:10:28 2020 |
Jon | Configuration | PSL | New EPICS database for C1PSL + C1IOO | Summary
I have completed the
new EPICS channel database for the c1psl
and c1ioo channels |
|
|
15142
|
Wed Jan 22 19:17:20 2020 |
gautam | Configuration | Computers | Megatron: starts up grade | upgrade was done
cronjob testing wasn't one
by one 😢 |
|
|
15145
|
Thu Jan 23 15:32:42 2020 |
gautam | Configuration | Computers | Megatron: starts up grade | The burt snapshotting is still not so reliable
- for whatever reason, the number of snapshot
files that actually get written looks random. |
|
|
15150
|
Thu Jan 23 23:07:04 2020 |
Jon | Configuration | PSL | c1psl breakout board wiring | To facilitate wiring the c1psl chassis
and scripting loopback tests, I've
compiled a distilled spreadsheet with the |
|
|
15158
|
Mon Jan 27 14:01:01 2020 |
Jordan | Configuration | General | Repurposed Sorenson Power Supply | The 24 V Sorenson (2nd from bottom) in
the small rack west of 1x2 was repurposed
to 12V 600 mA, and was run to a terminal |
|