| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
15003
|
Wed Oct 30 23:12:27 2019 |
Koji | Update | SUS | PRM suspension issues | Sigh... hard loch |
|
|
15894
|
Wed Mar 10 11:55:22 2021 |
gautam | Update | SUS | PRM suspension suspect | The procedure is that the optic is kicked
to excite it, and allowed to ring down for
~1ksec, with damping turned off. The procedure |
|
|
15853
|
Mon Mar 1 16:27:17 2021 |
gautam | Update | LSC | PRM violin filter excessive? | The PRM violin filter seems very suboptimal
- the gain peaking shows up in the MICH OLTF,
presumably due to the MICH-->PRM LSC output |
|
|
15854
|
Tue Mar 2 13:39:31 2021 |
rana | Update | LSC | PRM violin filter excessive? | agreed, seems excessive. I always prefer
bandstop over notch in case the eigenfrequency
wanders, but the bandstop could be made to |
|
|
9772
|
Tue Apr 1 21:45:01 2014 |
Jenne | Summary | LSC | PRM violin notch not at correct freq? | Koji and I have the PRMI locked right now,
and we hear a very strong violin mode ringing
up, at 628Hz. This is, according to |
|
|
10753
|
Thu Dec 4 01:24:47 2014 |
Jenne | Update | SUS | PRM volin 3rd harmonic | Earlier this afternoon, while locking PRMI,
I saw a big peak at 1883.48 Hz. This
comes closest to the PRM's 627.75 Hz *3, |
|
|
6896
|
Fri Jun 29 16:41:41 2012 |
yuta | Update | General | PRM was NOT installed backwards | [Koji, Steve, Jamie, Yuta]
So, PRM was NOT flipped...... |
|
|
14745
|
Wed Jul 10 16:53:22 2019 |
gautam | Update | SUS | PRM watchdog condition modified | [koji, gautam]
We noticed that the PRM watchdog
was tripping frequently. This is a period |
|
|
6364
|
Tue Mar 6 16:06:15 2012 |
Jenne | Configuration | SUS | PRM watchdog tripped |
|
|
|
14038
|
Thu Jul 5 10:15:30 2018 |
gautam | Update | SUS | PRM watchdog tripped | PRM watchdog was tripped around 7:15am
PT today morning. I restored it. |
|
|
8443
|
Thu Apr 11 10:15:55 2013 |
Steve | Update | Locking | PRM yaw oplev transferfunction | See Feb
2012 PRM yaw transferfunctions, also
check Valera's modified side |
|
|
8532
|
Tue May 7 03:08:12 2013 |
Jenne | Update | | PRM yaw responsible for RIN | Koji spent some time earlier this evening
exploring where the excess RIN that we see
in the PRC is coming from. |
|
|
8535
|
Tue May 7 10:30:32 2013 |
Koji | Update | Locking | PRM yaw responsible for RIN |
|
|
|
6525
|
Thu Apr 12 00:40:45 2012 |
Jenne | Update | SUS | PRM, BS oplevs off | There's a beam dump after the HeNe on the
BS oplev table, since the IPPOS measurement
optics (steering mirrors) are in the way |
|
|
8634
|
Thu May 23 20:58:49 2013 |
Jenne | Update | PEM | PRM, ITMX optics tripped, restored |
M5.7
- 11km WNW of Greenville, California
Time2013-05-23 |
|
|
9065
|
Mon Aug 26 19:31:22 2013 |
manasa | Update | SUS | PRM, ITMY watch dogs | PRM and ITMY were found with their watchdogs
shutdown this afternoon (cause unknown).
I re-engaged them. |
|
|
3104
|
Wed Jun 23 12:47:43 2010 |
Jenne | Update | SUS | PRM, SRM ready for vacuum | I fitzed
with the PRM and SRM briefly, and I now believe |
|
|
7884
|
Tue Jan 8 18:10:41 2013 |
Jenne | Update | SUS | PRM, SRM, BS oplevs off | I don't know why (I'm just leaving the
lab right now....) but BS, PRM, SRM all have
no light on their oplev PDs. I have turned |
|
|
9408
|
Tue Nov 19 11:33:39 2013 |
Steve | Update | SUS | PRM- OSEM side ccd camera is in place |
|
|
|
9409
|
Tue Nov 19 11:56:10 2013 |
manasa, jenne, ericQ | Update | LSC | PRM- OSEM side ccd camera is in place |
|
|
|
11344
|
Wed Jun 3 11:55:52 2015 |
Steve | Update | Optical Levers | PRM-BS oplev | I'm getting ready change the Newport
Ultima U100-AC to SS-Polaris-K1
LOW DRIFT MIRROR MOUNTS |
|
|
8182
|
Wed Feb 27 11:59:43 2013 |
yuta | Update | SUS | PRM/BS coil re-balanced | I re-adjusted coil gains and f2a filters
for PRM and BS.
I'm not sure what happened to PRM |
|
|
7978
|
Thu Jan 31 20:06:22 2013 |
Evan | Update | Locking | PRM/PR2 cavity | [Jenne, Evan]
Tonight we made a non-folded cavity
between the PRM and PR2 as follows. I put |
|
|
7980
|
Thu Jan 31 23:48:45 2013 |
Koji | Update | Locking | PRM/PR2 cavity | Wow! What's happened? |
|
|
7981
|
Fri Feb 1 09:33:11 2013 |
Jamie | Update | Locking | PRM/PR2 cavity | I replaced the BS1 between the POPDC PD
and the camera with a 98 reflector, and moved
the 50 up before the BS to dump half the |
|
|
7985
|
Fri Feb 1 15:12:53 2013 |
Jenne | Update | Locking | PRM/PR2 cavity | After Jamie did all the work this
morning on the POP table, I was able to get
the cavity to lock. It's not very stable |
|
|
7986
|
Fri Feb 1 19:55:33 2013 |
Jenne | Update | Locking | PRM/PR2 cavity | [Jamie, Koji, Jenne]
We are looking at the mode scan data,
and have some preliminary results! |
|
|
7987
|
Fri Feb 1 23:12:42 2013 |
Koji | Update | Locking | PRM/PR2 cavity | During the scanning we were riddled by
the fact the PDH error and the transmission
peaks do not happen simultaneously. |
|
|
7988
|
Fri Feb 1 23:52:59 2013 |
rana | Update | Locking | PRM/PR2 cavity | Very exciting result, if true. I
suppose we should try to reconfirm this result
by doing another phase map of PRM03. |
|
|
17877
|
Thu Sep 28 11:27:24 2023 |
Radhika | Update | SUS | PRM/SRM damping/alignment | PRM/SRM OSEM input
calibration
- I realized |
|
|
2848
|
Mon Apr 26 21:12:53 2010 |
Koji | Update | SUS | PRM/SRM standoffs glued | Kiwamu and Koji
The PRM/SRM were balanced with the
standoffs. We glued them to the mirror. |
|
|
17583
|
Thu May 4 17:14:15 2023 |
Paco | Summary | LSC | PRMI (MICH and PRCL) calibrated displacement and BS angle to MICH couplings | [Mayank, Paco]
We calibrated PRCL |
|
|
9274
|
Thu Oct 24 04:13:15 2013 |
Jenne | Update | LSC | PRMI + 2 ALS arms | [Masayuki, Jenne, Rana]
We have, for the |
|
|
9275
|
Thu Oct 24 08:04:54 2013 |
Steve | Update | LSC | PRMI + 2 ALS arms |
Nice work. Congratulation |
|
|
9276
|
Thu Oct 24 09:08:27 2013 |
jamie. | Update | LSC | PRMI + 2 ALS arms | nice. |
|
|
9279
|
Thu Oct 24 14:14:18 2013 |
rana | Update | LSC | PRMI + 2 ALS arms | Just in case people were confused,
although the PRMI + 2 ALS arms were controlled,
we weren't able to bring them in to resonance. |
|
|
9280
|
Thu Oct 24 15:19:58 2013 |
Koji | Update | LSC | PRMI + 2 ALS arms | > all of complications
of handing off |
|
|
9243
|
Wed Oct 16 02:27:56 2013 |
Jenne | Update | LSC | PRMI + 2 arm attempt |
[Masayuki, Jenne]
Masayuki informed me
that the Xarm ALS was feeling pretty good |
|
|
9244
|
Wed Oct 16 02:39:24 2013 |
rana | Update | LSC | PRMI + 2 arm attempt |
that's
some hot stuff
|
|
|
9247
|
Wed Oct 16 17:34:28 2013 |
Jenne | Update | LSC | PRMI + 2 arm attempt | Koji reminded me that we should also save
the data from the PRMI+Xarm, just in case
we want to look at it later. |
|
|
8837
|
Fri Jul 12 12:51:16 2013 |
manasa | Update | LSC | PRMI + ALS automation |
|
|
|
8779
|
Fri Jun 28 02:12:21 2013 |
manasa | Update | LSC | PRMI + X arm ALS | X arm stabilized
using ALS while PRMI stayed locked |
|
|
8833
|
Fri Jul 12 00:12:41 2013 |
Koji | Update | LSC | PRMI + Y arm trial | [Koji, Manasa, Annalisa]
I made several trials to scan the
arm on the IR TEM00 resonance while the PRMI |
|
|
9037
|
Tue Aug 20 00:19:23 2013 |
rana | Update | LSC | PRMI / DRMI investigations | While Jenne was plotting, I locked and
aligned the MICH with AS55_Q. Then I aligned
the PRM and locked PRMI using REFL55_I/Q |
6x |
|
15873
|
Fri Mar 5 22:25:13 2021 |
gautam | Update | LSC | PRMI 1f SB locking recovered | Now that the REFL55 signal chain is capable
of providing balanced, orthogonal readout
of the two quadratures, I was able to recover |
|
|
15291
|
Thu Apr 2 15:53:01 2020 |
gautam | Update | ASC | PRMI 1f locked for collecting feedforward data | This afternoon, I kept the PRM locked for
~1hour and then measured transfer functions
from the PRM angular actuators to the POP |
|
|
15996
|
Mon Apr 5 22:26:01 2021 |
gautam | Update | LSC | PRMI 1f locking (no ETMs) recovered | Since it seems like the entire electronics
chain has no obvious failure, I decided to
compensate for the apparent increased optical |
|
|
17684
|
Thu Jul 13 17:20:53 2023 |
yuta | Update | LSC | PRMI 1f not locking stably | PRMI carrier on 1f now locks for ~1min
but not more. Below is the configuration.
The configuration is the same as basically |
|
|
17696
|
Wed Jul 19 04:01:35 2023 |
Hiroki | Update | LSC | PRMI 1f not locking stably | [Yuta, Hiroki]
We
conducted the followings for the PRMI experiment |
|
|
17791
|
Wed Aug 16 18:33:40 2023 |
yuta | Update | LSC | PRMI 1f/3f switching in both carrier/sideband resonant configurations | [JC, Yuta]
Transitioning from |
|