| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
60
|
Thu Jul 7 15:20:04 2022 |
rana | General | Optical Contacting | some useful links | For our optical contacting, Jennifer and
I are starting out with glass (microscope
slides), with the setup in the EE shop next |
|
|
114
|
Thu Oct 27 22:12:21 2022 |
rana | General | Optical Contacting | plotting and PID | The Arduino / AC PWM interface looks good.
I recommend that you maintain the code in
GitHub and post a link to the repo whenever |
|
|
131
|
Mon Jun 26 13:53:40 2023 |
Sophia Adams | General | Optical Contacting | cantilever geometry to find the quality factor of a silicon bond | I am trying to design a cantilever setup
to find the quality factor of optically bonded
silicon. The cantilever will be given an |
|
|
58
|
Tue Jul 5 21:06:47 2022 |
Juan | General | General | Work Update | Update of my current work I have finished
one coil driver board and started on the
last two that I need here is the progress |
|
|
106
|
Thu Oct 20 22:43:05 2022 |
Jennifer Hritz | General | Optical Contacting | Wired the thermocouples backwards | Since the two devices are giving different
temperature readings, I would like to find
out if this imprecision is linear (e.g. they |
|
|
75
|
Mon Aug 15 16:37:51 2022 |
Juan | General | General | Update on Sat Amp and OSEMs | Sat
Amp
|
|
|
59
|
Thu Jul 7 10:23:04 2022 |
Juan | General | General | Update | Almost done with coil driver boards |
|
|
69
|
Fri Jul 22 13:47:47 2022 |
Juan | General | General | Update | Just a general update of what I have been
up to deriving Lagrange for double pendulum
system and also been looking at code that |
|
|
20
|
Fri Aug 6 04:34:43 2021 |
Koji | General | General | Theoretical Cooling Time Limit | I was thinking about how fast we can cool
the test mass. No matter how we improve the
emissivity of the test mass and the cryostat, |
|
|
105
|
Wed Oct 19 21:51:10 2022 |
Jennifer Hritz | General | Optical Contacting | The trials and tribulations of the thermocouples | I intended to test the new thermocouple
set up today, but when I plugged them in,
both did not read a temperature. It took |
|
|
66
|
Thu Jul 14 14:55:01 2022 |
Jennifer Hritz | General | Optical Contacting | Testing isopropanol and methanol | Note that I am just testing out different
techniques, so I have not set up the thermocouples
to precisely measure the temperatue. |
|
|
103
|
Mon Oct 17 23:17:25 2022 |
Jennifer Hritz | General | Optical Contacting | Testing PWM code with actual samples | Now that I have (relatively) good PWM code,
I wanted to do my first real test with actual
samples. Since everything went smoothly, |
|
|
125
|
Thu Feb 2 17:28:37 2023 |
Sophia Adams | General | Optical Contacting | Test of Temperature Reading of One Plate |
The arduino was able to read temperature |
|
|
16
|
Tue Jun 22 22:28:09 2021 |
Koji | General | Design specs | Test Mass wedge design | The
ETM wedge of 0.5deg will allow us to separate
the AR reflections. We will be OK with the |
|
|
53
|
Thu Jun 16 14:04:30 2022 |
Juan | General | Suspension | Table for Mariner Suspension Cryo | Today we looked at possible locations for
where we will be setting up Mariner Suspension
and Cryo chamber. The first option was the |
|
|
54
|
Thu Jun 16 19:43:36 2022 |
Koji | General | Suspension | Table for Mariner Suspension Cryo | - B246/QIL Skyhook
Find the base of Skyhook.
It should be in the storage room (B246). |
|
|
55
|
Thu Jun 23 21:11:03 2022 |
Koji | General | Suspension | Table for Mariner Suspension Cryo | Table moving effort in the OMC lab: See
https://nodus.ligo.caltech.edu:8081/OMC_Lab/412
|
|
|
34
|
Fri Oct 1 12:01:24 2021 |
Paco | General | Design specs | TM Barrel coating emissivity | [Paco, Nina, Aidan]
We ran our stack emissivity calculation
on different AR stacks to try and make a |
|
|
35
|
Fri Oct 1 13:24:40 2021 |
Aidan | General | Design specs | TM Barrel coating emissivity | I have to question whether this passes
a sanity test. Surely in the case of Stack
2, the 10um thick Ta2O5 will absorb the majority |
|
|
36
|
Fri Oct 1 14:11:23 2021 |
Paco | General | Design specs | TM Barrel coating emissivity | Agree with this.
Quickly running tmm on the same "stacks"
gave the Attachment #1-3. (Ignore the |
|
|
138
|
Fri Aug 25 13:25:05 2023 |
Radhika | General | General | Summary of JPL/Ball cryocooler discussion | Here is a summary of the cryocooler discussion
hosted at JPL.
Dave Glaister of Ball Aerospace |
|
|
73
|
Thu Aug 4 13:44:56 2022 |
Jennifer Hritz | General | Optical Contacting | Success with slowly heating | Yesterday, I did two rounds of slowly heating
4 samples to the maximum hot plate temperature.
This was to formally test if my success |
|
|
3
|
Fri Jun 5 11:13:50 2020 |
Raymond | General | Heat Load | Steady state heat load example | Attached is a cartoon partial view into
the heat load experienced by the Mariner
assembly. |
|
|
4
|
Thu Mar 4 17:04:52 2021 |
Paco | General | Design specs | Silicon TM dichroic coatings for phase I | Have been using the 40m
Coatings repo code by Gautam (with some
modifications to make dichroic designs under |
|
|
6
|
Wed Mar 17 19:51:42 2021 |
Paco | General | Design specs | Silicon TM dichroic coatings for phase I | Update on ETM
New optima are
being found using the same basic code with
some modifications, which I summarize below; |
|
|
7
|
Wed Mar 17 21:24:27 2021 |
gautam | General | Design specs | Silicon TM dichroic coatings for phase I | I guess you have tried it already - but
does enforcing the stacks to be repeating
bilayer pairs of the same thickness fail |
|
|
9
|
Wed Mar 24 17:42:50 2021 |
Paco | General | Design specs | Silicon TM dichroic coatings for phase I | Yeah, the magnitudes are the inverse weighted
scalar costs (so they lie on the appropriate
relative scale) and indeed larger enclosed |
|
|
104
|
Tue Oct 18 19:33:38 2022 |
Jennifer Hritz | General | Optical Contacting | Setting up thermocouples | Firstly, last night's heating did not
change the contacted surface area greatly,
but there is too many factors to speculate |
|
|
23
|
Thu Aug 26 17:40:41 2021 |
Stephen | General | Suspension | Selecting MOS-style frame | [Koji, Stephen]
Kind of a silly post, and not very
scientific, but we are sticking to it. During |
|
|
74
|
Mon Aug 8 13:00:56 2022 |
Juan | General | General | Sat Amp testing of OSEMS | In the following test, a single Sat Amp
chassis that holds Sat Amp Board S1106078
and S1106077 |
|
|
72
|
Thu Aug 4 11:26:55 2022 |
Juan | General | General | Sat Amp | Sat amp seems to be working just fine.
There does seem to be a saturation issue
with one of the outputs we may need to change |
|
|
102
|
Sun Oct 16 14:20:32 2022 |
Jennifer Hritz | General | Optical Contacting | Samples after 2 weeks under pressure | Since I was focusing on the hot plate code
and therefore did not need my weights, I
decided to leave them on top of my samples |
|
|
24
|
Thu Sep 9 11:25:30 2021 |
Paco | General | Design specs | Rerun HR coatings with n,k dispersion | [Paco]
I've re-run the HR coating
designs for both ETM and ITM using interpolated |
|
|
25
|
Thu Sep 9 20:42:34 2021 |
Paco | General | Design specs | Rerun HR coatings with n,k dispersion | [Paco]
Alright, I've done a re-optimization
targetting a wider T band around 2128 nm. |
|
|
82
|
Tue Sep 27 22:29:34 2022 |
Jennifer Hritz | General | Optical Contacting | Razor test apparatus disassembly pictures | Pictures of the razor test apparatus before
and after disassembly, to make future reassembly
easier. |
|
|
77
|
Tue Aug 16 19:54:29 2022 |
Jennifer Hritz | General | Optical Contacting | Razor blade test | We succeeded in setting up an apparatus
for quantifiying the razor blade test. After
mounting the glass slides such that |
|
|
86
|
Fri Sep 30 21:51:31 2022 |
Jennifer Hritz | General | Optical Contacting | Quick test heat and pressure test | Given that these glass slides are much
thinner than the ones I worked with prior,
I suspected they would be more receptive |
|
|
57
|
Sat Jul 2 09:22:39 2022 |
Juan | General | General | Progress update | I've completed one coil driver board.
Hopefully next week I can finish the
other 2 boards and make the modifications |
|
|
126
|
Mon Feb 6 15:36:39 2023 |
Jennifer Hritz | General | Optical Contacting | Papers on making Q measurements of bonds | Upper limits on the mechanical
loss of silicate bonds in a silicon tuning
fork oscillator​ |
|
|
108
|
Sat Oct 22 21:18:56 2022 |
Jennifer Hritz | General | Optical Contacting | PWM v3.0 | With v3.0, I took a couple steps backwards
by getting rid of the feature that increases
the heating rate so I can isolate the base |
|
|
107
|
Fri Oct 21 22:22:37 2022 |
Jennifer Hritz | General | Optical Contacting | PWM v2.6 on new thermocouple set up | I performed the same tests I have been
doing prior (+180°C in 10 minutes)
but now with the (correctly wired) thermocouples |
|
|
Draft
|
Tue Oct 25 18:55:38 2022 |
Jennifer Hritz | General | Optical Contacting | PWM 3.1 very slow heating | [I'm behind on data processing, but
I'm creating an entry on the day I actually
run the tests] |
|
|
110
|
Mon Oct 24 21:23:22 2022 |
Jennifer Hritz | General | Optical Contacting | PWM 3.1 longer off times in cycle | To combat the bottom plate heating up much
faster than the top plate, I decided to try
increasing the cycle period from 1000ms (1s) |
|
|
112
|
Wed Oct 26 21:27:23 2022 |
Jennifer | General | Optical Contacting | PWM 3.1 (more) very slow heating | [I'm (once again) behind on data processing,
but I'm creating an entry on the day
I actually run the tests] |
|
|
109
|
Sun Oct 23 21:01:40 2022 |
Jennifer Hritz | General | Optical Contacting | PWM 3.0 (+280°C in 5) | I decided test how fast the plates
would heat up if the heat was just on constantly
on for 5 minutes. In general, these tests |
|
|
13
|
Fri May 7 09:57:18 2021 |
Stephen | General | Equipment | Overall Dimensions for Mariner Suspension Test Chamber Concept | Koji, Stephen
Putting together Koji's design
work with Stephen's CAD, we consider |
|
|
18
|
Wed Jul 7 16:32:27 2021 |
Stephen | General | Equipment | Overall Dimensions for Mariner Suspension Test Chamber Concept | WIP - Stephen to check on new suspension
dimensions and fit into 40m chamber |
|
|
2
|
Thu May 21 12:10:03 2020 |
Stephen | General | Resources | Ongoing Mariner Resources | Ongoing points of updates/content (list
to be maintained and added)
Mariner |
|
|
70
|
Tue Jul 26 14:17:44 2022 |
Juan | General | General | OSEMS actuators | we have 23 OSEMS they look all full built
and I will try and test them this week and
or next week. |
8x |
|
78
|
Tue Aug 23 17:10:50 2022 |
Paco | General | Design specs | New corner plots | Instead of varying individual layer thicknesses
using the MC sampler, I made sure both the
thickness and index of refractions are varied |
|