ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14208
|
Fri Sep 21 19:50:17 2018 |
Koji | Update | CDS | Frequent time out | Multiple realtime processes on c1sus are
suffering from frequent time outs. It eventually
knocks out c1sus (process). |
|
|
14210
|
Sat Sep 22 00:21:07 2018 |
Koji | Update | CDS | Frequent time out | [Gautam, Koji]
We had another crash of c1sus and
Gautam did full power cycling of c1sus. It |
|
|
14211
|
Sun Sep 23 17:38:48 2018 |
yuki | Update | ASC | Alignment of AUX Y end green beam was recovered | [ Yuki, Koji, Gautam ]
An alignment of AUX Y end green
beam was bad. With Koji and Gautam's |
|
|
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 |
|
|
14213
|
Sun Sep 23 20:15:35 2018 |
Koji | Summary | OMC | Montecarlo simulation of the phase difference between P and S pols for a modeled HR mirror | Link to OMC_Lab
ELOG 308 |
|
|
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 |
|
|
14215
|
Mon Sep 24 15:06:10 2018 |
gautam | Update | VAC | c1vac1 reboot + TP1 controller replacement | [steve, gautam]
Following the procedure in this |
|
|
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. |
|
|
14217
|
Wed Sep 26 10:07:16 2018 |
Steve | Update | VAC | why reboot c1vac1 | Precondition: c1vac1 & c1vac2 all LED
warning lights green [ atm3 ], the only error
message is in the gauge readings NO COMM, |
|
|
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 |
|
|
14223
|
Mon Oct 1 22:20:42 2018 |
gautam | Update | SUS | Prototyping HV Bias Circuit | Summary:
I've been plugging away at
Altium prototyping the high-voltage bias |
|
|
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 |
|
|
14225
|
Tue Oct 2 23:57:16 2018 |
gautam | Update | PonderSqueeze | Squeezing scenarios | [kevin,
gautam] |
|
|
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 |
|
|
14229
|
Thu Oct 4 08:25:50 2018 |
Steve | Update | VAC | rga scan pd81 at day 78 |
|
|
|
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 |
|
|
14243
|
Thu Oct 11 13:40:51 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements |
Quote:
|
|
|
14244
|
Fri Oct 12 08:27:05 2018 |
Steve | Update | VAC | drypump | Gautam and Steve,
Our TP3 drypump seal is at 360
mT [0.25A load on small turbo] after |
|
|
14245
|
Fri Oct 12 12:29:34 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements | With Gautam's help, Y-arm was locked.
Then I ran the script "armloss_dcrefl_asdcpd_scope.py"
which gets the signals from oscilloscope. |
|
|
14247
|
Fri Oct 12 17:37:03 2018 |
Steve | Update | VAC | pressure gauge choices | We want to measure the pressure gradient
in the 40m IFO
Our old MKS cold cathodes are out |
|
|
14248
|
Fri Oct 12 20:20:29 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements | I ran the script for measuring arm-loss
and calculated rough Y-arm round trip loss
temporally. The result was 89.6ppm. (The |
|
|
14251
|
Sat Oct 13 20:11:10 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements |
Quote:
|
|
|
14253
|
Sun Oct 14 16:55:15 2018 |
not gautam | Update | CDS | pianosa upgrade | DASWG is not what we want to use for config;
we should use the K. Thorne LLO
instructions, like I did for ROSSA. |
|
|
14254
|
Mon Oct 15 10:32:13 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements | I used these values for measuring armloss:
Transmissivitity of ITM
= 1.384e-2 * (1 +/- 1e-2)
Transmissivitity |
|
|
14255
|
Mon Oct 15 12:52:54 2018 |
yuki | Update | Computer Scripts / Programs | additional comments |
Quote:
|
|
|
14256
|
Mon Oct 15 13:59:42 2018 |
Steve | Update | VAC | drypump replaced | Steve & Bob,
Bob removed the head cover from
the housing to inspect the condition of the |
|
|
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 |
|
|
14258
|
Tue Oct 16 00:44:29 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements | The scripts for measuring armloss are in
the directory "/opt/rtcds/caltech/c1/scripts/lossmap_scripts/armloss_scope".
armloss_derefl_asdcpd_scope.py: |
|
|
14259
|
Wed Oct 17 09:31:24 2018 |
Steve | Update | PSL | main laser off | The main laser went off when PSL doors
were opened-closed. It was turned back on
and the PSL is locked. |
|
|
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 |
|
|
14261
|
Thu Oct 18 00:27:37 2018 |
Koji | Update | SUS | SUS PD Whitening board inspection | [Gautam, Koji]
As a part of the preparation for
the replacement of c1susaux with Acromag, |
|
|
14262
|
Mon Oct 22 15:19:05 2018 |
Steve | Update | VAC | Maglev controller serviced | Gautam & Steve,
Our controller is back with Osaka
maintenace completed. We swapped it in this |
|
|
14263
|
Thu Oct 25 16:17:14 2018 |
Steve | Update | safety | safety training | Chub Osthelder
received 40m specific basic safety traning
today. |
|