| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
17945
|
Wed Nov 1 12:28:28 2023 |
yuta | Update | ASC | Beam spot position measurements before the vent | Beam spot position measurements were done,
oplevs aligned.
Attachment #1 shows |
|
|
17944
|
Wed Nov 1 10:58:55 2023 |
Paco | Update | General | BHD OMC Vent | Update Wed Nov 1 10:58:48 2023
All vertex suspensions are now
under software watchdog logic. I tested all |
|
|
17943
|
Tue Oct 31 21:09:15 2023 |
Koji | Update | BHD | OMC bond rework | We came back to the OMC 24 hours later
and found the
bonding work yesterday went well. |
|
|
17942
|
Tue Oct 31 17:42:45 2023 |
Paco | Update | General | BHD OMC Vent | [Koji, Paco]
WE NEED TO |
|
|
17941
|
Tue Oct 31 17:27:27 2023 |
Paco | Update | SUS | ETMX software watchdog | [Koji, Paco, Yuta]
We implemented the ETMX software watchdog
"level 1", meaning the logic disables |
|
|
17940
|
Tue Oct 31 17:27:09 2023 |
Koji | Update | SUS | ETMX POS unstable when misaligned | [Koji Paco]
We decided to invert the signs
of the misalignment offset for ETMX to see |
|
|
17939
|
Tue Oct 31 16:25:29 2023 |
Koji | Update | SUS | ETMX POS unstable when misaligned | I noticed that there was an oscillating
spot on the ITMX face camera image. I tracked
the source down and found it was the motion |
|
|
17938
|
Mon Oct 30 19:20:16 2023 |
Koji | Summary | General | BHD Inventory | Prepared the following components around
the staging clean booth:
SOS 2"->3" |
|
|
17937
|
Mon Oct 30 19:11:58 2023 |
Koji | Update | ASC | MoIs for the BHD SOSs | From the ITMX window, I confirmed that
PR2 is using the original metal sleeve and
the optic is 3/8" thick. (See Attachment |
|
|
17936
|
Mon Oct 30 18:04:46 2023 |
Paco | Update | SUS | BS Oplev check | I measured the Oplev PIT/YAW OLTFs and
adjusted the gains to get 0.1 to ~ 4 Hz feedback
as is recommended |
|
|
17935
|
Mon Oct 30 15:47:16 2023 |
Koji | Update | BHD | OMC bond rework | [JC Koji]
We successfully applied EP30-2
on the OMC #1. |
8x |
|
17934
|
Mon Oct 30 14:29:20 2023 |
yuta | Update | ASC | Beam spot position measurements with updated moment of inertia | Beam
spot position measurements were done again
using updated estimate of moment of inertia. |
|
|
17933
|
Mon Oct 30 13:28:28 2023 |
Koji | Update | BHD | Epoxy removal | [JC Koji]
In the preparation of the OMC bond
rework, we removed the remaining bond layer |
|
|
17932
|
Sun Oct 29 21:09:23 2023 |
Koji | Update | BHD | OMC cable bracket delamination | [JC, Koji]
While adjusting the kinematic mount,
we noticed that the OMC cable bracket was |
|
|
17931
|
Sun Oct 29 21:01:18 2023 |
Koji | Update | BHD | Integration of the BHD platform and an OMC | [JC, Koji]
Integration
of the BHD platform and an OMC |
|
|
17930
|
Sat Oct 28 18:07:37 2023 |
Koji | Update | ASC | MoIs for the BHD SOSs | I checked Solidworks models to see the
mass/moment of inertia for the BHD SOS masses.
The mass/MoI calculation includes |
|
|
17929
|
Sat Oct 28 18:04:43 2023 |
Koji | Update | General | EP30-2 kit brought from Downs | EP30-2 kit brought from Downs on Oct 27,
2023. Stephen said he would take care of
the property (location) record. |
|
|
17928
|
Sat Oct 28 02:33:22 2023 |
yuta | Update | ASC | Beam spot position measurements with updated demodulation method | Beam
spot position measurements were done again
using updated demodulation method. |
|
|
17927
|
Fri Oct 27 17:37:26 2023 |
yuta | Update | ASC | Beam spot position measurements with sign | Beam
spot position measurements were done again
with the correct sign on the mis-centering. |
|
|
17926
|
Fri Oct 27 13:30:16 2023 |
rana | Update | ASC | Beam spot position measurements | I looked at this code and it is a little
untrustworthy. The demod is not being done
correctly so there can easily be some aliasing |
|
|
17925
|
Thu Oct 26 21:37:08 2023 |
yuta | Update | ASC | Beam spot position measurements | [Begüm, Paco, Yuta]
Beamspot position |
|
|
17924
|
Thu Oct 26 19:40:57 2023 |
Radhika | Update | ASS | XARM ASS Working | XARM ASS Fixed (hopefully)
The
winning approach was considering T and L |
|
|
17923
|
Thu Oct 26 18:34:58 2023 |
Koji | Summary | General | OMC #1 / DCPDs / Glass Breadboard are in | [Begüm, Koji]
We brought the OMC #1 / DCPDs /
a glass breadboard from the OMC lab to the |
|
|
17922
|
Thu Oct 26 13:54:08 2023 |
Koji | Summary | General | Towards vent on Nov 1st. | =
BHD Platform assembly on the staging table
= |
|
|
17921
|
Thu Oct 26 13:50:14 2023 |
Koji | Update | General | Picomotor / HWP rotator wiring | Wiring configuration for the picomotors
and the HWP rotator.
The mighty mouse connectors on the |
|
|
17920
|
Wed Oct 25 14:03:17 2023 |
Radhika | Update | LSC | FPMI CARM with CM board | I drew a block diagram to work through
the high-bandwidth CARM feedback using the
CM board. The goal was to obtain a derivation |
|
|
17919
|
Wed Oct 25 09:23:31 2023 |
JC | Update | LSC | C1SUS2 Crash Again | [JC]
I came in this morning and began
to fiddle with the Spectrogram. There was |
|
|
17918
|
Tue Oct 24 18:19:44 2023 |
yuta | Update | SUS | Actuator calibrations of BHD optics | [Begüm, Vittoria, Yuta]
We calibrated actuators for |
|
|
17917
|
Tue Oct 24 18:07:06 2023 |
yuta | Update | CDS | c1sus2 crashed again | While locking ITMY single bounce vs LO
fringe, c1sus2 crashed again (at around 17:20
local). |
|
|
17916
|
Mon Oct 23 22:35:53 2023 |
Paco | Update | LSC | FPMI CARM with CM board | [paco, yuta]
We achieved a ~23 |
|
|
17915
|
Mon Oct 23 16:41:22 2023 |
Koji | Summary | BHD | BHD Platform | Thanks, JC for putting the parts together!
I'll start collecting the instruments
necessary for the OMC mounting / locking. |
|
|
17914
|
Mon Oct 23 16:32:38 2023 |
yuta | Update | LSC | PRMI 1f carrier locking recovered, but not so stable | [Vittoria, Yuta]
We |
|
|
17913
|
Mon Oct 23 15:38:19 2023 |
Koji | Update | CDS | Dolphin Fencing Investigation / Full CDS crash / nodus reboot / recovered all | There should be a correct wrapper script
such that we don't need to do nonsense
like remembering the IP address and the port |
|
|
17912
|
Mon Oct 23 14:42:17 2023 |
JC | Summary | BHD | BHD Platform | Today, I spent majority of my time insterting
the Helicoils for the Platform Assembly,
D2100435. 181 Inserts to be exact. |
|
|
17911
|
Mon Oct 23 14:08:57 2023 |
JC | Update | CDS | Dolphin Fencing Investigation / Full CDS crash / nodus reboot / recovered all | We used this technique earlier and we came
across a mistake while we were following
the steps from the elog. (The Wiki is better, |
|
|
17910
|
Fri Oct 20 15:51:21 2023 |
JC | Summary | BHD | BHD Platform | The BHD platform assembly is going well.
I have gotten majority of the Helicoils into
all of their components. The only Helicoils |
|
|
17909
|
Thu Oct 19 13:54:16 2023 |
Paco | Update | LSC | FPMI locking and high BW CM board | [Paco, yuta]
We
investigated the situation of the CM board |
|
|
17908
|
Thu Oct 19 07:14:44 2023 |
JC | Update | IOO | Morning Alignment | Basic
Arm Alignment has been done
WFS
seemed to have railed overnight.
The |
|
|
17907
|
Wed Oct 18 21:21:58 2023 |
Paco | Update | LSC | FPMI locking and high BW CM board | [Paco, yuta]
FPMI
- We recovered the FPMI lock after |
|
|
17906
|
Wed Oct 18 13:01:52 2023 |
JC | Summary | Daily Progress | Lab WiFi | !!We
Now Have WiFi Through The Entire Lab!!
Paco
and I connected the new routers and expanded |
|
|
17905
|
Wed Oct 18 12:29:19 2023 |
Paco | Update | SUS | OPLEV Whitening Board Fixed and installed (ETMX) | [Murtaza, Paco, Radhika]
We got some LT1128s from downs
(Dean) to get this board up and running again. |
|
|
17904
|
Wed Oct 18 12:20:26 2023 |
JC | Update | Frequency noise measurement | Spectrogram Using GWpy | [JC]
I was able to make a spectrogram |
|
|
17903
|
Tue Oct 17 19:35:31 2023 |
Radhika | Update | ASS | Reducing XARM-ASS Errors | I resumed work to
restore XARM ASS
I manually |
|
|
17902
|
Mon Oct 16 20:50:32 2023 |
Paco | Update | IOO | some IMC WFS tweaks: update - MC_TRANS +80dB FM5 back on | Since the MC_TRANS_PIT and MC_TRANS_YAW
control signals were still small even though
the sum was ok, I found the C1:IOO-MC_TRANS_PIT/YAW |
|
|
17901
|
Mon Oct 16 19:37:12 2023 |
yuta | Update | LSC | PRMI 1f carrier locking recovered, but not so stable | PRMI
1f carrier locking using AS55_Q and REFL55_I
was recovered, but |
6x |
|
17900
|
Mon Oct 16 08:28:27 2023 |
JC | Update | VAC | N2 tripped and Vac locked | The last N2 tank ran out this morning ~3:00am.
Since then the Vac system tripped and the
shutter closed. I had to head over to the |
|
|
17899
|
Fri Oct 13 08:42:14 2023 |
murtaza | Update | SUS | OPLEV Whitening Board Missing (ETMX) | [Yuta, Paco, Murtaza]
[WIP]
Chasing the excess noise in TRX, |
6x |
|
17898
|
Thu Oct 12 18:47:52 2023 |
yuta | Update | LSC | ALS DARM CARM locking successful | ALS
DARM and CARM locked.
The procedure basically follows what |
|
|
17897
|
Wed Oct 11 22:57:11 2023 |
Paco | Update | ALS | On the residual frequency dependence of the ALS DARM calibration with FPMI | [Paco, Yuta]
Attachment #1 shows
tonights OOL ALS noises with the PSL hepa |
|
|
17896
|
Wed Oct 11 21:23:49 2023 |
yuta | Update | LSC | FPMI locking restored after vertex coil driver upgrade | [Murtaza, Vittoria, Paco, Yuta]
We
restored FPMI RF locking for the first time |
9x |