| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14616
|
Fri May 17 10:12:07 2019 |
Anjali | Summary | Equipment loan | Borrowed component | I borrowed one Marconi (2023 B) from
40 m lab to QIL lab. |
|
|
14617
|
Fri May 17 10:57:01 2019 |
gautam | Update | SUS | IY chamber opened | At ~930am, I vented the IY annulus by opening
VAEV. I checked the particle count, seemed
within the guidelines to allow door opening |
|
|
14618
|
Fri May 17 16:07:25 2019 |
gautam | Summary | Equipment loan | Borrowed component | ZHL-3A (2 units) —-> QIL
|
|
|
14620
|
Fri May 17 17:01:08 2019 |
gautam | Update | SUS | ETMY suspension characterization | To investigate my mapping of the eigenfrequencies
to eigenmodes, I checked the Oplev spectra
for the last few hours, when the Oplev spot |
|
|
14621
|
Sat May 18 12:19:36 2019 |
Kruthi | Update | | CCD calibration and telescope design | I went through all the elog entries related
to CCD calibration. I was wondering
if we can use Spectralon diffuse |
6x |
|
14623
|
Mon May 20 11:33:46 2019 |
gautam | Update | SUS | ITMY inspection | With Chub providing illumination via the
camera viewport, I was able to take photos
of ITMY this morning. All the magnets look |
|
|
14624
|
Mon May 20 13:16:57 2019 |
gautam | Summary | Computers | new laptop setup: ASIA - ndscope and diaggui | Following instructions here,
I installed ndscope on this machine. DTT
still could not be be run from this machine, |
|
|
14625
|
Mon May 20 17:12:57 2019 |
gautam | Update | SUS | ETMY LL adjustment | Following the observation that the response
in the LL shadow sensor was lower than that
of the others, I decided to pull it out a |
|
|
14626
|
Mon May 20 21:45:20 2019 |
Milind | Update | | Traditional cv for beam spot motion | Went through all of Pooja's elog posts,
her report and am currently cleaning up her
code and working on setting up the simulations |
|
|
14627
|
Mon May 20 22:06:07 2019 |
gautam | Update | SUS | ITMY also kicked | For good measure:
|
|
|
14628
|
Tue May 21 00:15:21 2019 |
gautam | Update | SUS | Main objectives of vent achieved (?) | Summary:
ETMY now shows four suspension
eigenmodes, with sensible phasing between |
|
|
14629
|
Tue May 21 21:33:27 2019 |
gautam | Update | SUS | ETMY HR face cleaned | [koji,
gautam]
We executed this plan. Photos are |
|
|
14630
|
Wed May 22 11:53:50 2019 |
gautam | Update | SUS | ETMY EQ stops backed out | Yesterday we noticed that the POS and SIDE
eigenmodes were degenerate (with 1mHz spectral
resolution). Moreover, the YAW peak had shifted |
|
|
14631
|
Wed May 22 22:50:13 2019 |
gautam | Update | VAC | Pumpdown prep | I did the following:
Checked the ETMY OSEM sensing
matrix and OSEM actuation matrix - more on |
|
|
14632
|
Thu May 23 08:51:30 2019 |
Milind | Update | Cameras | Setting up beam spot simulation | I have done the following thus far since
elog #14626:
Simulation: |
|
|
14633
|
Thu May 23 10:18:39 2019 |
Kruthi | Update | Cameras | CCD calibration | On Tuesday, I tried reproducing Pooja's
measurements (https://nodus.ligo.caltech.edu:8081/40m/13986).
The table below shows the values I got. |
|
|
14634
|
Thu May 23 15:30:56 2019 |
gautam | Update | VAC | Pumpdown underway - so far so good! | [chub, koji, gautam]
We executed the pre-pumpdown
tasks per the checklist - heavy doors were |
|
|
14635
|
Thu May 23 15:37:30 2019 |
Milind | Update | Cameras | Simulation enhancements and performance of contour detection |
Implemented image level noise for
simulation. Added only uniform random noise.
Implemented
addition of uniform random noise to any sinusoidal |
6x |
|
14636
|
Fri May 24 11:47:15 2019 |
gautam | Update | VAC | IFO is almost at nominal vacuum | [chub, gautam]
Overnight, the pressure of the
main volume only rose by 10 mtorr, so there |
|
|
14637
|
Fri May 24 17:50:19 2019 |
gautam | Update | IOO | IFO recovery | At ~4pm, the main volume pressure (CC1)
was reported to be ~5e-5 torr. So I
replaced the HR mirror in the MC REFL path |
|
|
14638
|
Sat May 25 20:29:08 2019 |
Milind | Update | Cameras | Simulation enhancements and performance of contour detection |
I used the same motion as defined
in the previous elog. I gradually added noise
to the images. Noise added was uniform random |
|
|
14639
|
Sun May 26 21:47:07 2019 |
Kruthi | Update | Cameras | CCD Calibration |
On Friday, I tried calibrating
the CCD with the following setup. Here, I |
|
|
14640
|
Mon May 27 11:37:13 2019 |
gautam | Update | VAC | c1vac is unresponsive | I've been monitoring the status of
the pumpdown remotely with ndscope lookbacks
of C1:Vac-CC1_pressure. Today morning, I |
|
|
14641
|
Tue May 28 09:51:33 2019 |
gautam | Update | VAC | c1vac hard-rebooted | The vacuum itself was fine - CC1 gauge
reported a pressure of 1.3e-5 torr. Note
to self: the C1:Vac-CC1_HORNET_PRESSURE channel, |
|
|
14642
|
Tue May 28 17:41:13 2019 |
gautam | Update | General | IFO status | [chub, gautam]
Today, we tried to resuscitate
the c1iscaux2 channels by swapping the existing, |
|
|
14643
|
Wed May 29 18:13:25 2019 |
gautam | Update | ALS | Fiber beam-splitters are now PM | To maintain PM fibers all the way through
to the photodiode, I had ordered some PM |
|
|
14644
|
Fri May 31 01:38:21 2019 |
Kruthi | Update | Cameras | Telescope | [Kruthi, Milind]
Yesterday, we were able to
capture some images of objects at a |
|
|
14645
|
Fri May 31 15:55:16 2019 |
gautam | Update | ALS | PSL + X beat restored | Coupling into the fast axis
of the fiber:
The PM couplers I bought require |
|
|
14646
|
Mon Jun 3 16:40:48 2019 |
rana | Update | Cameras | Telescope | no BMP files |
|
|
14647
|
Mon Jun 3 16:46:31 2019 |
gautam | Update | IOO | IMC not locking | Since ~ 2 hours ago, the IMC autolocker
has not been able to keep the IMC locked.
I don't see any obvious trends in the |
|
|
14649
|
Mon Jun 3 21:03:54 2019 |
Milind | Update | Cameras | Steps to interact with GigE | The following steps summarize the steps
to setting up and interacting with a GigE
camera. |
|
|
14650
|
Mon Jun 3 23:18:59 2019 |
Milind | Update | Computer Scripts / Programs | updating bashrc | I was working with the git repo in the
SnapPy_pypylon folder (/cvs/cds/rtcds/caltech/c1/scripts/GigE/SnapPy_pypylon)
and needed to create a branch. To avoid any |
|
|
14651
|
Tue Jun 4 00:11:45 2019 |
Kruthi | Update | Cameras | GigE setup | Chub and I are trying to figure out a way
to co-mount GigE into the existing cylindrical
enclosure. I'm attaching a picture of |
|
|
14652
|
Tue Jun 4 00:17:15 2019 |
gautam | Update | BHD | Preliminary BHD calculations | Summary:
Attachment |
|
|
14653
|
Tue Jun 4 10:56:31 2019 |
gautam | Update | IOO | IMC diagnostics | I briefly managed to lock the IMC today
- it stayed locked for ~10 minutes. Attachment
#1 shows spectra of a few error and control |
|
|
14654
|
Tue Jun 4 22:24:45 2019 |
Milind | Update | Cameras | Steps to interact with GigE | Figured out how to get/grab frames by looking
at the pypylon
documenation as that turned out to be |
|
|
14655
|
Tue Jun 4 23:41:13 2019 |
gautam | Update | Cameras | Steps to interact with GigE | caget/caput
probably does the job. |
|
|
14656
|
Wed Jun 5 22:30:13 2019 |
Milind | Update | Cameras | Steps to interact with GigE | Thanks! It does indeed do the trick! With
that I was able to
Obtain current exposure |
|
|
14657
|
Thu Jun 6 16:01:52 2019 |
Milind | Update | Cameras | Steps to interact with GigE | [Koji, Milind]
Today I ran into the following |
|
|
14658
|
Thu Jun 6 18:49:22 2019 |
gautam | Update | BHD | Preliminary BHD calculations | Summary:
I did some more calculations based
on our discussions at the meeting yesterday. |
|
|
14659
|
Thu Jun 6 22:11:53 2019 |
Koji | Update | IOO | IMC diagnostics | As per Gautam's request, I looked at
the IMC situation.
Locking |
|
|
14660
|
Sun Jun 9 21:24:00 2019 |
Kruthi | Update | Cameras | GigE setup | I managed to fit all the parts into the
cylindrical enclosure without having to drill
a hole in the enclosure to mount the analog |
|
|
14661
|
Mon Jun 10 22:22:19 2019 |
Milind | Update | Cameras | Steps to interact with GigE | Steps to take snapshots using GigE at different
exposures [Instructions for Kruthi]:
Setup C1-CAM-ETMX.ini (/opt/rtcds/caltech/c1/scripts/GigE/SnapPy_pypylon/C1-CAM-ETMX.ini) |
|
|
14662
|
Tue Jun 11 00:00:15 2019 |
Milind | HowTo | PSL | Steps to lock the PMC | Today, Rana had me key the PSL crate.
Locating the rack:
the crate is 1X1. This |
|
|
14663
|
Tue Jun 11 00:25:05 2019 |
Kruthi | Update | Cameras | GigE setup | [Kruthi, Milind]
Today, with Milind's help,
I installed the analog camera into the MC2 |
|
|
14664
|
Tue Jun 11 19:25:58 2019 |
aaron | Configuration | BHD | Reviving the single OMC BHD design? | I drew out some idea of how we might
use a single OMC to clean both paths of the
BHD after mixing, without being susceptible |
|
|
14665
|
Wed Jun 12 02:15:50 2019 |
Kruthi | Update | Cameras | GigE setup | [Koji, Kruthi]
Yesterday, Koji helped me clean
all the optics that are being used for the |
|
|
14666
|
Wed Jun 12 21:55:34 2019 |
Kruthi | Update | Cameras | GigE setup | I'm attaching a picture of the screen.
I just positioned the enclosure by turning
it a bit and I suppose we can see the |
|
|
14667
|
Wed Jun 12 22:02:04 2019 |
Milind | Update | Cameras | Simulation enhancements | Today, Rana asked me to work on improving
simulations based on the ideas we discussed
last week. As of the previous elog the simulation |
|
|
14668
|
Thu Jun 13 14:28:46 2019 |
rana | Update | Cameras | GigE setup | don't
need to lock - make sure the 4 OSEMs are
centered on the camera field just as we have |
|