| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
697
|
Thu Apr 9 12:50:28 2026 |
Cynthia | Update | Interferometer Simulations | O5 Test mass | https://docs.google.com/presentation/d/1vJPZ9H_umgsZacCLgsqAUZWjn7-6l77np3E_YgaSy_M/edit?usp=sharing |
|
|
698
|
Thu Apr 16 12:53:30 2026 |
Cynthia | Update | Interferometer Simulations | O5 Test mass | |
|
|
703
|
Thu Apr 23 12:47:05 2026 |
Cynthia | Update | Interferometer Simulations | O5 Test mass | |
|
|
707
|
Thu Apr 30 13:23:55 2026 |
Cynthia | Update | Interferometer Simulations | O5 Test mass | frequency locations of 5-8th order mode across
arm power of 0-800kW |
|
|
711
|
Thu May 7 13:35:14 2026 |
Cynthia | Update | Interferometer Simulations | O5 Test mass | |
|
|
712
|
Thu May 14 12:37:17 2026 |
Cynthia | Update | Measuring Noise in Interferometer | O5 Test mass design | |
|
|
713
|
Thu May 14 13:42:57 2026 |
Cynthia | Update | Interferometer Simulations | less-roll-off coating | |
|
|
635
|
Tue Aug 26 12:45:41 2025 |
Christina, Ma, Tyler | Update | CDS | RIN Update | Slides |
|
|
600
|
Fri Jun 27 15:38:22 2025 |
Christina | Update | TCS | FROSTI Reconstruction | [Tyler, Ma, Christina, Luke]
We threaded the wiring of the
heater elements through the reflective surfaces |
|
|
601
|
Tue Jul 1 11:04:00 2025 |
Christina | Update | TCS | FROSTI Reconstruction II | [Ma, Tyler, Christina]
Finished
external reconstruction of the FROSTI by
installing all the pins to the 2 DB 25 connectors. |
|
|
604
|
Mon Jul 7 16:39:18 2025 |
Christina | Update | TCS | Pomona Box Drawings | Below are the drawings for the pomona
box modifications |
|
|
608
|
Thu Jul 10 16:41:18 2025 |
Christina | Update | TCS | | [Christina, Ma, Tyler]
Pomona
Box completed and is now on the server rack
in 1119. Additionally, the photodetectors |
|
|
611
|
Tue Jul 15 10:40:23 2025 |
Christina | Update | TCS | | [Christina, Ma, Tyler]
Yesterday,
Ma and I started taking data for the PSD/CSD
measurements while the photodetectors and |
|
|
614
|
Tue Jul 15 13:13:48 2025 |
Christina | Update | TCS | Photodetector optical post assembly | |
|
|
615
|
Tue Jul 22 12:20:29 2025 |
Christina | Update | TCS | | [Ma, Christina, Tyler]
Figure
1 shows the following PSDs for channels 0-15
from the 14 hour test. Figure 2 shows the |
|
|
619
|
Tue Jul 29 12:30:00 2025 |
Christina | Update | TCS | 260 hour ADC update | [Ma, Christina, Tyler]
ADC CyMAC
260 hr, 8192Hz sampling rate channels V3
and Vref6 |
|
|
624
|
Mon Aug 11 22:19:50 2025 |
Christina | Update | TCS | Red Pitaya Data Streaming | [Ma, Tyler, Christina]
This past week, we were able to
set up the data streaming for continuous |
|
|
629
|
Tue Aug 12 13:46:56 2025 |
Christina | Update | | | |
|
|
631
|
Tue Aug 19 12:08:40 2025 |
Christina | Update | TCS | RP Initial vs CyMAC Plot Comparisons | [Tyler, Ma, Christina]
These are the
frequency averaged and veto binned plots
for the initial Red Pitaya and CyMAC systems. |
|
|
173
|
Thu Jul 27 10:18:43 2023 |
Celeste | Update | TCS | Graphical Updates to HOM RH Modification | Attached are updated graphs of the irradiance
distribution from the 1/8th ring heater units
(extruded and reduced in length). |
|
|
180
|
Fri Jul 28 17:45:45 2023 |
Celeste | Update | TCS | Graphical Updates to HOM RH Modification, Friday 7/28 | Updated 1/8th Heater simulation modification
graphs. Slides 7, 10, 16-19 are new additions. |
|
|
187
|
Tue Aug 1 16:22:35 2023 |
Celeste | Update | TCS | Graphical Updates to HOM RH Modification, Tuesday 8/1 | Slides 20-33 are newly added (data/graphs
from parameter sweep feature-1/8th heater
unit length varied from 10% of original to |
|
|
200
|
Thu Aug 10 14:13:38 2023 |
Celeste | Update | TCS | 8/10/23, Simulation Graphical Progress | |
|
|
204
|
Fri Aug 11 10:57:20 2023 |
Celeste | Update | TCS | 8/11/23 Simulation Progress | |
|
|
209
|
Tue Aug 15 16:10:06 2023 |
Celeste | Update | TCS | 8/15/2023 Simulation Progress | |
|
|
586
|
Tue Jun 3 11:54:06 2025 |
Cece Ochoa | Update | | CE Cavity Design Update | Update on the design for the CE Cavity Mirrors |
|
|
659
|
Thu Nov 6 12:39:43 2025 |
Cece Ochoa | Update | ELOG | CE Cavity Design Update | Updated mode placements and ROC. No thermal
effects added yet. |
|
|
663
|
Thu Nov 20 13:03:58 2025 |
Cece Ochoa | Update | ELOG | CE Cavity Design Update | Update on grouping 0+8th Order Modes |
|
|
675
|
Thu Jan 29 12:46:22 2026 |
Cece Ochoa | Update | | CE Cavity Design Update (4) | Update for CE Cavity Arms + Modes
https://docs.google.com/presentation/d/1-dXYylkAbNpHR4WVCx9Q8ryL_xGlH-JSSLXEUQg6b7Q/edit?usp=sharing
|
|
|
683
|
Thu Feb 12 12:53:51 2026 |
Cece Ochoa | Update | ELOG | CE Cavity Design Update | Update on HOM placement w/ cavity locking.
Still verifying mode placement
RoC: 28340m
and 26874m |
|
|
Draft
|
Thu Mar 12 13:18:49 2026 |
Cece Ochoa | Update | Interferometer Simulations | CE Cavity Design Update | Animation showing how modes shift in the CE
arm cavity for radius 27581m and mirror radius
of40cm as the laser powers up the 1.5 MW. |
|
|
702
|
Thu Apr 23 11:32:48 2026 |
Cece Ochoa | Update | Interferometer Simulations | CE Cavity Design Update | Update on CE Mirror RoC, simulation with FROSTI
and cavity locking
View Presentation |
|
|
6
|
Tue Jun 21 18:31:49 2022 |
Cassidy and Phoebe | Update | Cameras | IR Absorbing Screen and FLIR Camera Setup | Today we set up the IR absorbing screen and
the camera on the optical table, as well
as tested that the camera was functioning |
|
|
9
|
Tue Jul 26 14:10:35 2022 |
Cassidy | Update | Cameras | Optical Post Replacement and Realignment | Today I replaced the 3" optical post that
the camera rests on with a 2" optical post
in order for the screen to correctly fill |
|
|
81
|
Thu Apr 27 16:23:44 2023 |
Cao, Pamella and Julian | Physics | VAC | Installing vacuum system (cont.) |
[Pamella, Cao and Julian, Shane]
Particles account
10:37 am: Starting the particles account |
|
|
11
|
Mon Oct 3 17:21:39 2022 |
Cao | Update | TCS | Inspection of macor parts | The macor parts arrived and inspected today.
These include:
Macor spacer
(drawing: LIGO_Redesign_Macor_Spacer_Drawing_v4.pdf |
7x |
|
67
|
Tue Apr 11 13:15:40 2023 |
Cao | Infrastructure | Clean & Bake | Nitrogen gas tank replaced | The nitrogen gas tank has been replaced with
a new unit. The new tank is ultra pure nitrogen
(>99.9% nitrogen).
The new tank has been |
|
|
70
|
Wed Apr 12 16:13:19 2023 |
Cao | Physics | VAC | Vacuum prep and installation | Aiden, Pamella, Peter, Shane, Cao
Today
we started vacuum chamber assembly work
10:16 am: Particle count measurement of clean |
|
|
84
|
Fri Apr 28 18:16:57 2023 |
Cao | Physics | VAC | Grounding vacuum system |
|
|
|
85
|
Fri Apr 28 19:00:13 2023 |
Cao | Physics | VAC | Tighten CF ports on vacuum chamber | [Cao]
After Jon's comment yesterday
that some of the connection did not seem
to have good metal-metal contact, in particular |
|
|
86
|
Fri Apr 28 19:39:19 2023 |
Cao | Summary | General | Clean and Bake Leybold TTR 91 Pirani Gauge |
|
|
|
98
|
Sun May 14 15:50:48 2023 |
Cao | Infrastructure | Computers | High resolution display of logrus machine | [Cao]
The display resolution of the
logrus has been 1064x768 and has been the
only option, which is not great. While remote |
|
|
130
|
Wed Jun 21 20:25:05 2023 |
Cao | Infrastructure | VAC | Vacuum chamber bake attempt 1 | TL;DR:
We are not yet able to
bake the chamber at 150 deg C due to some
current limit, most likely caused power supply |
6x |
|
141
|
Mon Jul 3 14:32:24 2023 |
Cao | Infrastructure | VAC | Cooling down vacuum chamber | [Cao]
After leaving the the chamber
to bake at 120 deg C from Thursday 3:41 pm.
Today I started to cool the chamber down |
|
|
142
|
Mon Jul 3 16:26:21 2023 |
Cao | Infrastructure | DAQ | Access and control Red Pitaya remotely and run it on local machine | [Cao]
To access and control the Red
Pitaya using Python locally on a machine
within the local network, one should follow |
|
|
97
|
Fri May 12 20:28:34 2023 |
Aiden, Cao | Physics | VAC | Vacuum chamber Helium leak test | [Aiden, Cao]
1. Helium leak test
2:00 pm: Uninstall regulator from nitrogen |
|
|
145
|
Wed Jul 5 15:46:47 2023 |
Aiden, Cao | Infrastructure | VAC | Vacuum Chamber Baking Update |
Cao and Aiden put the RGA back on to
the chamber and measured the outgassing rate
after the chamber has cooled down from its |
|
|
17
|
Thu Jan 26 18:58:25 2023 |
Aiden | Update | General | Oven Heating | Aiden cleaned the oven with methanol again
and set the oven to 260 degC for 12 hours. |
|
|
23
|
Tue Feb 7 17:27:30 2023 |
Aiden | Physics | ELOG | Clean and Bake Batch #1 | Cleaned SS parts with liquinox for 20 min.
Then put in oven for 5 steps;
1. Ramp, 100
degC, 15 min
2. Const, 100 degC, 30 min
3. |
|
|
25
|
Fri Feb 10 15:15:30 2023 |
Aiden | Update | General | Bagging First Batch | Aiden Bagged and Tagged the first batch of
stainless steel parts shown on the google
spread sheet.
1. Removed two parts from |
|