| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
17217
|
Mon Oct 31 21:04:43 2022 |
Koji | Update | ASC | WFS inspection | Inspected the lab to see what we can do
about the IFO WFS:
WFS heads
1 |
|
|
17233
|
Mon Nov 7 12:37:26 2022 |
Koji | Update | General | Borrowed the fiber tester for the OMC lab | I am borrowing the fiber illuminator /
fiber tester / VisiFault for the OMC lab.
It has been stored in the top drawer at the |
|
|
17305
|
Wed Nov 23 16:34:33 2022 |
Koji | Update | CDS | New donatella testing | Let's use this entry to list of the
test results of new donatella.
Firefox |
|
|
17344
|
Tue Dec 6 17:40:13 2022 |
Koji | Update | ASC | IMC WFS heads electronic feasibility test for using for Arm ASC | We have spare WFS demods in a plastic box
along the Y arm. So you don't need to
modify the IMC demod boards, which we want |
|
|
17353
|
Fri Dec 9 17:42:04 2022 |
Koji | Update | CDS | New donatella issues |
MEDM video switches didn't
work - "sh: 1: /opt/rtcds/caltech/c1/scripts/general/videoscripts/videoswitch3:
not found"
This was |
|
|
17354
|
Fri Dec 9 18:32:11 2022 |
Koji | Summary | ASC | MC WFS sensing matrix measurement | [Rana, Koji]
The IMC WFS pitch Output
Matrix was recalculated based on a DC Sensing |
|
|
17372
|
Thu Dec 22 15:52:48 2022 |
Koji | Summary | DetChar | Summary on the summary pages | [Tega Koji]
Last week, Tega gave me
a brief introduction to the configuration |
|
|
17375
|
Fri Dec 30 12:53:47 2022 |
Koji | Update | General | 40m avoided the power outage | Received the campus power outage this (Dec
30, 2022) morning.
- ELOG is still up |
|
|
17381
|
Tue Jan 3 16:11:05 2023 |
Koji | Update | CDS | Chiara local backup | I checked how the local backup of our /cvs/cds
is done. The last backup was taken on 2022-12-15
and it kept failing since 2022-12-16. |
|
|
17382
|
Tue Jan 3 17:41:55 2023 |
Koji | Update | CDS | Chiara local backup | Chris modified the fstab so that the disk
is automatically mounted. The key was that
these two disks have an identical UUID and |
|
|
17385
|
Wed Jan 4 15:10:19 2023 |
Koji | Configuration | CDS | unknown dhcp request to fb1 | Jamie reported that:
The logs (/var/log/daemon.log)
on fb1 are filling with this line: |
|
|
17386
|
Wed Jan 4 17:15:41 2023 |
Koji | Configuration | CDS | unknown dhcp request to fb1 | The dhcpd error on the log file stopped
when the yellow (DAQ) ethernet cable was
removed. With Chris's permission I left |
|
|
17424
|
Thu Jan 26 00:18:54 2023 |
Koji | Update | Cameras | Recording CCD cameras | Connect any video signal supported by the
adapter. Use Windows / Mac or any other OS.
If it keeps complaining, contact Magwell |
|
|
17428
|
Thu Jan 26 23:33:19 2023 |
Koji | Update | LSC | EP30-2 Epoxy bonding for Yuta | @OMC Lab
EP30-2 Epoxy bonding of V beam dumps
for LSC PDs. |
|
|
17518
|
Thu Mar 23 14:20:29 2023 |
Koji | Summary | BHD | "On why BH55 senses the LO phase, a finesse adventure of loss and residual DARM offsets" | This is interesting. With the FPMI, the
DARM phase shift is enhanced by the cavity.
Therefore, I suppose the effect on the BH55 |
|
|
17530
|
Wed Mar 29 19:19:41 2023 |
Koji | Update | ALS | X end green now indefinitely locking | Stable
lock of the X End green laser was recovered.
- The biggest issue |
6x |
|
17538
|
Thu Apr 6 21:09:12 2023 |
Koji | Summary | NeuralNet | Testing neural network controller during day time | I'm going to get into the PSL enclosure.
Also turn on the HEPA for a while during
the intrusion. |
|
|
17560
|
Mon Apr 24 19:11:20 2023 |
Koji | Summary | BHD | LO/MI(DARM) signal strength comparison between the configurations | Yuta and I had a discussion last week about
the signal strength between the configurations.
Here are some naive calculations. |
|
|
17572
|
Fri Apr 28 20:56:06 2023 |
Koji | Summary | ASC | IFO alignment in bad shape | I suppose ASS Y arm is using PR2/3 to align
the beam to the arm.
Can't we have ASS PRM bring the |
|
|
17597
|
Fri May 19 13:25:03 2023 |
Koji | Update | PSL | MCF Noise | This is super! And now is the time to replace
the internal fan!
|
|
|
17613
|
Fri Jun 2 11:47:33 2023 |
Koji | Update | PEM | Mass for temperature control | How about measuring the actual weight with
a scale? There are a couple of scales on
Yuta's desk. |
|
|
17624
|
Wed Jun 7 15:51:47 2023 |
Koji | Update | Calibration | ITMY calibration with ALS and swept line | Can you make this flat by compensating
the gain bump due to the UGF of the phase
tracker? |
|
|
17631
|
Wed Jun 14 23:21:03 2023 |
Koji | Update | SUS | ETMX fast-channel-watchdog was implemented | Are you sure that the DAC/OSEM assignments
are correct?
args="IFO=C1,OPTIC=ETMX,DCU_ID=45,DAC_UL=0_0,DAC_LL=0_1,DAC_UR=0_2,DAC_LR=0_5,DAC_SD=0_6" |
|
|
17635
|
Fri Jun 16 20:38:21 2023 |
Koji | Update | SUS | QPD whitening euro card (ETMX Electronics Replacement) | To remove the +/-5V supply, we needed the
same modification to the QPD whitening board.
D990399-B |
|
|
17637
|
Fri Jun 16 23:23:56 2023 |
Koji | Update | | IFO working after ETMX electronics upgrade | Remaining work:
Hardware
The +/-15V power supply |
|
|
17638
|
Mon Jun 19 01:05:49 2023 |
Koji | Update | | IFO working after ETMX electronics upgrade | ETMX
Eurocard Crate investigation ~ Summary
- |
|
|
17645
|
Wed Jun 21 21:01:59 2023 |
Koji | Summary | DAQ | NODUS: rsyncd daemon / service set up | Followed the instruction on this elog to
restart the rsync server daemon
controls@nodus|etc> |
|
|
17646
|
Thu Jun 22 00:27:27 2023 |
Koji | Update | | IFO working after ETMX electronics upgrade | [Koji, Hiroki]
ETMX OPLEV QPD was fixed.
- What we knew was that |
|
|
17647
|
Thu Jun 22 00:47:00 2023 |
Koji | Update | | IFO working after ETMX electronics upgrade | [Mayank, Koji]
ETMX Sat amp (D080276)
CH3 PD receiver circuit fixed. |
|
|
17648
|
Thu Jun 22 01:04:42 2023 |
Koji | Update | | IFO recovery | I wanted to check the oplev functionality
but the IFO was not well aligned. So started
the CDS recovery. |
|
|
17651
|
Thu Jun 22 22:34:43 2023 |
Koji | Update | | IFO recovery | [Hiroki, Mayank, Koji]
The X end PZT driver for green
alignment: |
|
|
17652
|
Thu Jun 22 23:09:32 2023 |
Koji | Update | ALS | X end green beam alignment | [Hiroki, Mayank, Ruben, Koji]
As we expected that the X-end PZT
steerers takes more times to be recovered, |
|
|
17657
|
Mon Jun 26 10:21:44 2023 |
Koji | Update | CDS | Deleted harmful script link on the IFO ALIGN screen | There were a few scripts linked on the
IFO ALIGN screen. These silently ran ASS
and leave (possible) offsets in ASS. When |
|
|
17658
|
Mon Jun 26 13:11:18 2023 |
Koji | Update | VAC | N2 Vent | [Yehonathan, Mayank, Hiroki, JC,
Koji]
Vent prep from 10AM |
|
|
17659
|
Mon Jun 26 18:37:35 2023 |
Koji | Update | safety | 40m Lab Laser Safe | 40m Lab is now Laser Safe
- The PSL NPRO (Innolight) was
turned off with the OFF switch and the key. |
|
|
17660
|
Tue Jun 27 19:19:17 2023 |
Koji | Summary | General | 5ft x 12 ft x 2ft optical table removal | [Many]
The large optical table
(5ft x 12ft x 2ft, previously called SP table) |
8x |
|
17661
|
Tue Jun 27 19:49:37 2023 |
Koji | Update | VAC | Pumping down attemp | [Mayank, Hiroki, Yuta, JC, Koji]
After JC came back from the optical
table placement at Synchrotron, we tried |
|
|
17663
|
Wed Jun 28 11:54:23 2023 |
Koji | Update | General | 40m LASER HAZARD | 40m has been transitioned to LASER HAZARD
now.
PSL/ETMX/ETMY NPROs were turned |
|
|
17664
|
Thu Jun 29 01:52:26 2023 |
Koji | Summary | General | IFO back in operation | [Mayank, Hiroki, Koji]
Once we reached 1~2mtorr, we opened
the PSL shutter. |
|
|
17665
|
Thu Jun 29 20:10:17 2023 |
Koji | Update | VAC | Pumping down | Towards Vacuum Normal
Closed V7 (Main volume
pumped by TP1/TP2)
Opened VA6 |
|
|
17670
|
Fri Jul 7 15:24:38 2023 |
Koji | Configuration | Daily Progress | Alignment and restoring the IFO | The incompleteness of burtrestore is a
critical issue. We need to track down what
is the issue. |
|
|
17672
|
Fri Jul 7 20:09:53 2023 |
Koji | Summary | ASC | IFO alignment is in a strange state | Before any trial at the ETMX suspension,
ETMX coil driver "Run" mode (a
sort of dewhitened mode) is ON at the coil |
|
|
17678
|
Tue Jul 11 17:21:58 2023 |
Koji | Update | VAC | Pumping down | Manually switched TP2 to "Low Speed
(LS)" mode (aka "Stand by")
|
|
|
17683
|
Thu Jul 13 17:05:10 2023 |
Koji | Update | General | Green laser at Y-End | The LED blinking on the head is normal.
We can ignore that.
It is likely that the controller |
|
|
17685
|
Thu Jul 13 19:34:08 2023 |
Koji | Update | General | Green laser at Y-End | Borrowed an NPRO controller from
Liyuan @ Downs B138
Model M125/6-OPN-PA |
|
|
17693
|
Tue Jul 18 14:47:03 2023 |
Koji | Update | Daily Progress | T&R measurement setup for PR2 | What's the nominal AOI for the mirror
and the T value at that angle in a number?
We will need that later. |
|
|
17703
|
Thu Jul 20 17:28:03 2023 |
Koji | Update | BHD | BHD Platform OMC cables | Dean made the OMC cables for the BHD Platform.
They are going through the C&B process.
From left to right: QPD cable, |
|
|
17709
|
Mon Jul 24 17:25:41 2023 |
Koji | Update | PEM | ADC/DAC setup of the temp sensor / heater for the X End Seismometer enclosure | [Koji, Advait]
Summary
Spare ADC/DAC channels |
|
|
17711
|
Mon Jul 24 23:01:10 2023 |
Koji | Summary | CDS | FIXED: rossa can't boot | Compared the network settings between some
of the machines.
It seemed that we can write network |
|
|
17712
|
Tue Jul 25 10:22:09 2023 |
Koji | Update | PEM | Remarks on the IFO recovery after CDS restart. | Yesterday during the recovery work from
the CDS restart, I found ASS was not working
for both arms. Both arms were flashing and |
|