| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
17785
|
Tue Aug 15 09:56:52 2023 |
yuta | Update | IOO | PMC aligned, c1sus2 crashed | [JC, Yuta |
|
|
17786
|
Tue Aug 15 17:11:17 2023 |
Koji | Update | IOO | FIXED: PMC issue | Summary
The problem in the PMC
Frequency Reference Card (35.5MHz) was fixed. |
7x |
|
17788
|
Wed Aug 16 12:49:37 2023 |
Deven | Update | LSC | PCA of noise spikes in sensor ASDs | Basic Idea
The idea behind this study was
that in several frequency ranges, there are |
6x |
|
17790
|
Wed Aug 16 17:16:13 2023 |
Koji | Update | General | BHD / Misc Inventory | ==
BHD Components ==
BHD BS: |
11x |
|
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 |
|
|
17792
|
Wed Aug 16 20:34:22 2023 |
Deven | Update | LSC | PRMI OLTFs measured with new input matrix | After Yuta locked PRMI and measured the
sensing matrix, I changed the input matrix
to the following and measured the MICH and |
|
|
17794
|
Fri Aug 18 14:43:24 2023 |
Murtaza | Update | General | Acoustic Noise Spectrum of various lab spaces. (100Hz-10kHz) | dB(A) (A-weighted) scale and
the Noise Criterion (NC) scale are popularly
used in the United States for creating the |
|
|
17795
|
Fri Aug 18 15:40:23 2023 |
andrei | Update | PEM | Seismometer heater and temp sensors | Dismantled the seismometer circuit
At Rana's request, Deven and
I have pulled all the wires out of the seismometer |
|
|
17796
|
Fri Aug 18 16:07:38 2023 |
deven | Update | PEM | Seismometer heater and temp sensors | I've turned off the power supply. I've
attached a picture of the rack with the switch
that I flipped circled |
|
|
17797
|
Mon Aug 21 10:56:16 2023 |
JC | Update | VAC | Vacuum Loss of N2 Pressure | There was a loss of N2 pressure over this
weekend. When I came in to check the cylinder
pressures, I was able to hear a hissing sound |
|
|
17798
|
Tue Aug 22 10:29:14 2023 |
paco | Update | Optical Levers | Storm and earthquake recovery -- ETMY oplev laser dead, ITMY stuck? | [JC, paco]
This morning we noted most optics
were tripped, probably as a result of a recent |
|
|
17799
|
Tue Aug 22 10:52:17 2023 |
Murtaza | Update | General | Acoustic Noise Spectrum | This is an update for 17794.
The UMIK 1 + REW combination gave
satisfactory results for creating the acoustic |
|
|
17800
|
Tue Aug 22 11:31:38 2023 |
paco | Update | Optical Levers | Storm and earthquake recovery -- ITMY restored | [JC, Koji-remote, paco]
ITMY stuck --> Shaken remotely and |
|
|
17801
|
Tue Aug 22 13:36:05 2023 |
Ian MacMillan | Update | SEI | Accelerometer calibration | [Ian, Torrey Cullen, Sander Vermeulen]
We are trying to calibrate one
of the Wilcoxon accelerometers from the cryo |
|
|
17802
|
Tue Aug 22 15:56:53 2023 |
Koji | Update | General | BHD / Misc Inventory | Photodiode inventory: [OMC
ELOG 615] |
|
|
17804
|
Wed Aug 23 16:11:03 2023 |
Paco | Update | General | Excess noise on YALS BEAT | [Paco]
Tuning the |
|
|
17805
|
Wed Aug 23 16:52:52 2023 |
Paco, Radhika, Murtaza | Update | ASS | Reducing XARM-ASS Errors | We're trying to reduce the demodulated
error signals after running the ASS script
for the XARM. |
|
|
17806
|
Wed Aug 23 19:47:53 2023 |
Koji | Update | CDS | Dolphin Fencing Investigation / Full CDS crash / nodus reboot / recovered all | Dolphin
Investigation
- I made a basic description on |
|
|
17807
|
Thu Aug 24 02:54:19 2023 |
Koji | Update | BHD | OMC Interface Aligner / BHD OFI arrangement | OMC Interface Aligner - (It's upside
down...)
BHD OFI arrangement |
|
|
17808
|
Thu Aug 24 11:16:44 2023 |
rana | Update | General | Excess noise on YALS BEAT | With such a big temperature change, do
you still get a reasonable beat note frequency?
There's some previous elog of Koji I |
|
|
17810
|
Thu Aug 24 17:08:38 2023 |
Koji | Update | General | Excess noise on YALS BEAT | Paco took the data which means he already
had the beat note.
There is some chance that the beat |
|
|
17811
|
Fri Aug 25 20:27:33 2023 |
Koji | Update | BHD | OMC Interface Aligner | A bit improved the design of OMC Interface
Aligner
The idea is...The OMC I/F aligner |
|
|
17812
|
Fri Aug 25 22:52:30 2023 |
Koji | Update | General | Taking nodus /home/export backup | Took the backup (snapshot) of nodus'
/home/export as of Aug 25, 2023
controls@nodus> |
|
|
17813
|
Tue Aug 29 01:39:47 2023 |
Koji | Update | General | BHD / Misc Inventory | 40m BHD OFI Inventory
OFI HWP 1
Motorized |
|
|
17814
|
Tue Aug 29 02:02:51 2023 |
Koji | Update | BHD | BHD Prep Status | Ready / Soon Ready
- BHD OMC Cables ready
- OMC#1 / OMC#4 ready |
|
|
17815
|
Tue Aug 29 18:02:35 2023 |
Radhika | Update | Daily Progress | T&R measurement setup for PR2 | The intented AOI for PR2 is 1.5 degrees.
I averaged the peak measurements from the
Moku:Go spectrum analyzer and from manual |
|
|
17816
|
Wed Aug 30 17:40:31 2023 |
Murtaza | Update | SUS | ETMX Testing | Update to 17809.
The free swing test for ETMX took quite some
time, here's a brief summary of what |
|
|
17817
|
Thu Aug 31 02:05:09 2023 |
Hiroki | Update | LSC | MICH noise in various conditions | [Yuta, Hiroki]
*This
work was done on Aug. 10th. |
|
|
17819
|
Thu Aug 31 10:15:21 2023 |
Radhika | Update | | Electronic CARM to ALS CARM handoff | [Paco, Radhika]
ALS control of CARM
Yesterday |
|
|
17820
|
Fri Sep 1 18:06:35 2023 |
Paco, Radhika, Murtaza | Update | ASS | Reducing XARM-ASS Errors | [Radhika, Murtaza]
XARM ASS
We |
|
|
17821
|
Sun Sep 3 08:30:56 2023 |
Hiroki | Update | LSC | ALS noise on Aug. 10th | [Yuta, Hiroki]
*This
work was done on Aug. 10th. |
|
|
17822
|
Sun Sep 3 08:37:18 2023 |
Hiroki | Update | General | Put away beam chopper | *This work was done on
Aug. 11th. |
|
|
17823
|
Sun Sep 3 08:47:43 2023 |
Hiroki | Update | Optical Levers | Found a fiber-coupled visible diode laser (iFLEX-1000) | [Koji, Hiroki]
*This
work was done on Aug. 11th. |
|
|
17825
|
Tue Sep 5 11:04:33 2023 |
rana | Update | ASS | Reducing XARM-ASS Errors | I recommend usinng the DC offset method
that Koji and I used for measuring the IMC
WFS sensing matrix (not the AC method that |
|
|
17828
|
Wed Sep 6 12:53:11 2023 |
Paco, Radhika, Murtaza | Update | ASS | Reducing XARM-ASS Errors | [Radhika, Murtaza]
To create the sensing matrix, we
tried the DC offset method by giving offsets |
|
|
17831
|
Thu Sep 7 16:25:01 2023 |
Murtaza | Update | SUS | ETMX Testing | COIL
BALANCING FOR ETMX |
|
|
17832
|
Thu Sep 7 18:42:02 2023 |
Paco, Radhika, Murtaza | Update | ASS | Reducing XARM-ASS Errors | [Radhika, Murtaza]
We recalculated the sensing matrix
for XARM ASS by collecting each sensor's |
|
|
17833
|
Thu Sep 7 21:09:17 2023 |
Paco | Update | | eCARM and eDARM to ALS CARM and ALS DARM | Tonight
I managed to lock CARM and DARM under ALS
control only |
|
|
17834
|
Fri Sep 8 17:11:53 2023 |
Koji | Update | CDS | FSSSlow restoration | I came to the lab to see the recovery work
from the power glitch this morning 8:15AM.
All CDS seems up. The suspensions are somewhat |
|
|
17835
|
Sat Sep 9 16:25:07 2023 |
Radhika | Update | ASS | Reducing XARM-ASS Errors | [Radhika, Murtaza]
This post summarizes XARM ASS efforts
from Friday 9/8 and Saturday 9/9. |
|
|
17836
|
Mon Sep 11 19:35:27 2023 |
Radhika | Update | ASS | Reducing XARM-ASS Errors | [Radhika, Murtaza, Paco]
Today we decided to take a closer
look at the demod phases of the T and L error |
|
|
17837
|
Tue Sep 12 18:49:51 2023 |
Koji | Update | General | Transformed 3x 18bit AI chassis into 16bit | For the preparation of the electronics
upgrade, three 18bit DAC AI chassis were
transformed to 16bit version. |
|
|
17846
|
Fri Sep 15 18:50:34 2023 |
Koji | Update | CDS | Dolphin Fencing Investigation / Full CDS crash / nodus reboot / recovered all | Dolphin
Fencing technique
I believe that the dolphin emits |
|
|
17865
|
Thu Sep 21 12:02:25 2023 |
Koji | Update | General | Power Outage Sept 21, 2023 ~9AM | [JC, Paco, Koji]
We had a power outage on Sept 21,
2023 at ~9AM. This is the third power outage |
|
|
17869
|
Fri Sep 22 19:05:19 2023 |
Koji | Update | General | Power Outage Sept 21, 2023 ~9AM | Pumping configuration changed.
Now TP2 is backing TP1 and TP3 is pumping
annuli. |
|
|
17870
|
Fri Sep 22 19:31:24 2023 |
Koji | Update | SUS | Fixed IMC/IFO alignment screens | Fixed IMC/IFO alignment screens |
|
|
17872
|
Mon Sep 25 15:32:57 2023 |
JC | Update | IOO | IMC Alignment After C1Sus2 Crash This Morning | [Paco, Murtaza, JC]
Fixed C1SUS2 Crash from this morning
|
|
|
17873
|
Mon Sep 25 17:01:46 2023 |
Murtaza | Update | | IFO ALIGNED (WITH SOME ISSUES) | [JC, Paco, Radhika, Murtaza]
1. WFS Relief
We tried to change the gain to offload |
|