ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
16786
|
Mon Apr 18 17:53:45 2022 |
Paco | Summary | BHD | Part IIa of BHR upgrade - POY11 debugging | [Paco, Ian]
We aligned the X-arm IR laser
First fix pointing on the |
|
16788
|
Tue Apr 19 18:10:10 2022 |
Paco | Update | BHD | Part V of BHR upgrade - POX11 path, LO path, and ITMX Oplev | [Yuta, Paco]
We set up POX11 beam path from
ITMX chamber to the ITMX in-air table. To |
  |
16789
|
Wed Apr 20 08:20:22 2022 |
Paco | Update | BHD | Part V of BHR upgrade - PR2 weirdness | Yesterday, I tried tuning the PR2 damping
gains by increasing the gain until the damping
gave the ~5 oscillations (by watching the |
|
16797
|
Thu Apr 21 16:49:01 2022 |
Paco | Update | BHD | Part V of BHR upgrade - BS Oplev + LO1 offset | [Paco, JC, Yuta]
We aligned the BS oplev using the
new BSOL mirror pair. The main change is |
|
16821
|
Sat Apr 30 13:29:33 2022 |
Paco | Update | BHD | POX Beam issues --- fixed, ASL alignment on vertex chamber | [Paco, Anchal, Yuta]
We opened the BSC and ITMX chamber
in the morning (Friday) to investigate POX11 |
|
16844
|
Tue May 10 18:25:43 2022 |
Paco | Update | BHD | Green Transmission path | [Yuta, Paco]
We installed GRX_SM1,
GRX_SM2, and finished aligning |
|
16847
|
Thu May 12 17:20:08 2022 |
Paco | Update | Alignment | POP Beam on CCD | [Paco]
Got POP beam centered on camera
and nominally on the two PDs. Attachment |
|
16852
|
Fri May 13 18:42:13 2022 |
Paco | Update | Alignment | ITMX and ITMY sat amp failures | [Yuta, Anchal, Paco]
As described briefly by JC, there
were multiple failure modes going during |
|
16861
|
Wed May 18 08:30:29 2022 |
Paco | Update | BHD | SRM OpLev | [Paco]
The SRM Oplev injection and detection
paths interfere heavily with the POY11. Due |
|
16864
|
Thu May 19 08:51:40 2022 |
Paco | Update | BHD | SRM OpLev | [Paco, Ian]
After agreement from Yuta/Anchal,
I moved POYM1 yaw to clear the aforementioned |
|
16868
|
Fri May 20 20:03:48 2022 |
Paco | Update | BHD | ITMY chamber work finished - LO and AS overlapped | [Paco, Anchal, Yuta]
Today, in short we:
Recovered alignment of |
 |
16869
|
Mon May 23 13:16:59 2022 |
Paco | Update | BHD | End of vent - checks | [Paco, Yuta]
Prep for closing and pump down.
Aligned IFO to maximize |
  |
16874
|
Wed May 25 16:56:44 2022 |
Paco | Configuration | BHD | IFO recovery - IMC alignment | [Yuta, Paco]
We aligned IMC to recover the IFO
progressively. First step was to center the |
|
16881
|
Fri May 27 17:46:48 2022 |
Paco | Summary | Computers | CDS upgrade visit, downfall and rise of c1lsc models | [Paco, Anchal-remote, Yuta, JC]
Sometime around noon today, right
after cds upgrade planning tour, c1lsc FE |
|
16885
|
Wed Jun 1 12:56:44 2022 |
Paco | Summary | Electronics | STEMlab 125 handout | [Paco, Deeksha]
Yesterday I handed Deeksha a red
pitaya (stemlab 125 - 10) to begin her summer |
|
16887
|
Fri Jun 3 12:13:58 2022 |
Paco | Configuration | CDS | Fix RFM channels | [Paco, Yuta]
We tried fixing the issue of LSC_TRY
and LSC_TRX channels not working. We first |
|
16890
|
Sun Jun 5 19:46:40 2022 |
Paco | Update | LSC | Fixed IMC Trans sum issue | [Paco]
Fixed the issue below:
|
|
16892
|
Mon Jun 6 13:35:11 2022 |
Paco | Update | LSC | First calibrated spectra of MICH at AS55 Q | [Paco, Yuta]
On the topic of high AS55_Q RFPD
offset, it seems it stems from a small residual |
 |
16924
|
Thu Jun 16 18:23:15 2022 |
Paco | Configuration | BHD | Recovering LO beam in BHD DCPDs | [Paco, Yuta]
We recovered the LO beam on the
BHD port. To do this, we first tried reverting |
|
16945
|
Fri Jun 24 17:16:59 2022 |
Paco | Update | ALS | XAUX cable in control room | [JC, Paco]
We took the long BNC cable that
ran from ETMX to ETMY and ran it from ETMX |
|
16956
|
Tue Jun 28 16:59:35 2022 |
Paco | Summary | ALS | ALS beat allan deviation (XARM) | [Paco]
I took ~ 7 minutes of XALS beatnote
data with the XAUX laser locked to the XARM |
 |
16962
|
Wed Jun 29 14:28:06 2022 |
Paco | Summary | ALS | ALS beat allan deviation (XARM) | I guess it didn't make sense since
f_beat can be arbitrarily moved, but the
beat is taken around the PSL freq ~ 281.73 |
|
16965
|
Thu Jun 30 18:06:22 2022 |
Paco | Update | ALS | Optimum ALS recovery - part I | [Paco]
In the morning I took some time
to align the AUX beams in the XEND table. |
|
16975
|
Wed Jul 6 19:58:16 2022 |
Paco | Summary | NoiseBudget | XARM noise budget | [Anchal, Paco, Rana]
We locked the XARM
using POX11 |
|
16988
|
Mon Jul 11 19:29:23 2022 |
Paco | Summary | General | Finalizing recovery -- timing issues, cds, MC1 | [Yuta, Koji, Paco]
Restarting
CDS
We were having |
|
16994
|
Tue Jul 12 19:46:54 2022 |
Paco | Summary | ALS | How (not) to take NPRO PZT transfer function | [Paco, Deeksha, rana]
Quick elog for this evening:
Rana disabled MC servo |
|
16997
|
Wed Jul 13 12:49:25 2022 |
Paco | Summary | SUS | SUS frozen | [Paco, JC, Yuta]
This morning, while investigating
the source of a burning smell, we turned |
|
17007
|
Fri Jul 15 19:13:22 2022 |
Paco | Summary | LSC | FPMI with REFL/AS55 demod phase adjust | [Yuta, Paco]
We first zero the offsets
in ASDC, AS55, REFL55, POX11, and POY11 when |
|
17012
|
Mon Jul 18 16:39:07 2022 |
Paco | Summary | LSC | FPMI locking procedure using REFL55 and AS55 | [Yuta, Paco]
In summary, we locked FPMI using
REFL55_I, REFL55_Q, and AS55_Q. The key to |
   |
17021
|
Wed Jul 20 11:58:45 2022 |
Paco | Summary | General | Jenne laser kaput? | [Paco, Yehonathan, JC]
We were trying to setup the Jenne
laser to characterize the response of three |
|
17022
|
Wed Jul 20 14:12:07 2022 |
Paco | Summary | General | Jenne laser kaput! | [Koji, Yehonathan, Paco]
Koji pointed out that this laser
was always driven with a current driver (which |
|
17024
|
Wed Jul 20 18:07:52 2022 |
Paco | Update | BHD | BHD MICH test | [Paco, Yuta, JC]
We did some easy tests on the BHD
readout in preparation for BHD MICH. With |
|
17030
|
Mon Jul 25 09:05:50 2022 |
Paco | Summary | General | Testing 950nm laser found in trash pile | [Paco, Yehonathan]
==== Late elog from Friday ====
Koji provided us with a QFLD-950-3S |
 |
17037
|
Tue Jul 26 20:54:08 2022 |
Paco | Update | BHD | BHD MICH test - LO phase control | [Yuta, Paco]
TL;DR
Successfully |
|
17102
|
Wed Aug 24 12:02:24 2022 |
Paco | Update | SUS | ITMX SUS is sus UL glitches? | [Yehonathan, Paco]
This morning, while attempting
to align the IFO to continue with noise-budgeting, |
|
17104
|
Thu Aug 25 15:24:06 2022 |
Paco | HowTo | Electronics | RFSoC 2x2 board -- fandango | [Paco, Chris Stoughton, Leo -- remote]
This morning Chris came over to
the 40m lab to help us get the RFSoC board |
    |
17133
|
Tue Sep 6 17:39:40 2022 |
Paco | Update | SUS | LO1 LO2 AS1 AS4 damping loop step responses | I tuned the local damping gains for LO1,
LO2, AS1, and AS4 by looking at step responses
in the DOF basis (i.e. POS, PIT, YAW, and |
   |
17142
|
Thu Sep 15 21:12:53 2022 |
Paco | Update | BHD | LO phase "dc" control | Locked the LO phase with a MICH offset=+91.
The LO is midfringe (locked using the A-B
zero crossing), so it's far from being |
 |
17143
|
Mon Sep 19 17:02:57 2022 |
Paco | Summary | General | Power Outage 220916 -- restored all | Restore lab
[Paco, Tega, JC,
Yehonathan]
We followed the instructions |
|
17145
|
Tue Sep 20 07:03:04 2022 |
Paco | Summary | General | Power Outage 220916 -- restored all | [JC, Tega, Paco ]
I would like to mention that during
the Vacuum startup, after the AUX pump was |
|
17150
|
Wed Sep 21 17:01:59 2022 |
Paco | Update | BHD | BH55 RFPD installed - part I | [Radhika, Paco]
Optical path setup
We
realized the DCPD - B beam path was already |
 |
17159
|
Mon Sep 26 11:39:37 2022 |
Paco | Update | BHD | BH55 RFPD installed - part II | [Paco, Anchal]
We followed rana's suggestion
for stress relief on the SMA joint in the |
 |
17160
|
Tue Sep 27 10:50:11 2022 |
Paco | Update | BHD | calibrated LO phase noise | Locked LO phase to ITMX single bounce beam
at the AS port, using the DCPD (A-B) error
point and actuating on LO1 POS. For this |
|
17161
|
Wed Sep 28 16:37:26 2022 |
Paco | Update | BHD | calibrated LO phase noise; update | [yuta, paco]
Update; the high frequency ( >
100 Hz) drop is of course not real and comes |
|
17163
|
Wed Sep 28 21:54:08 2022 |
Paco | Update | BHD | calibrated LO phase noise; update | Repeated the LO phase noise measurement,
this time with the LO - ITMY single
bounce, and a couple of fixes Koji |
 |
17167
|
Fri Sep 30 20:18:55 2022 |
Paco | Update | BHD | LO phase noise with different actuation points | [Paco, Koji]
We took lo phase noise spectra
actuating on the for different optics-- LO1, |
|
17171
|
Mon Oct 3 15:19:05 2022 |
Paco | Update | BHD | LO phase noise and control after violin mode filters | [Anchal, Paco]
We started the day by taking a
spectrum of C1:HPC-LO_PHASE_IN1, |
  |
17206
|
Mon Oct 24 18:01:00 2022 |
Paco | Summary | BHD | BHD actuation measurements | [Yuta, Paco]
Today
we calibrated the actuation on BHD suspended |
 |
17209
|
Tue Oct 25 09:57:34 2022 |
Paco | Configuration | PEM | Auto Z on trillium interface board | I pressed the Auto-Z(ero) button for ~
3 seconds at ~9:55 local (pacific) time on
the trillium interface on 1X5. |
|
17211
|
Tue Oct 25 14:29:56 2022 |
Paco | Summary | SEI | Earthquake tripped SUS | [Yuta, Paco, JC]
This
eq potentially tripped ETMY, PR2, |
|