| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
99
|
Thu Oct 13 20:56:48 2022 |
Jennifer Hritz | General | Optical Contacting | Hot plate PWM v2.4,5 Test #3 | My two corrections ended up being huge
overshoots. The drop off time (100°C)
is correct, but the default rate increase |
|
|
101
|
Sat Oct 15 21:59:13 2022 |
Jennifer Hritz | General | Optical Contacting | Hot plate PWM v2.6 Test #1, 2, 3 | I realized that, after changing so much
from v2.3 to 6, I should check that my first
two tests produce correct results with the |
|
|
100
|
Fri Oct 14 21:36:52 2022 |
Jennifer Hritz | General | Optical Contacting | Hot plate PWM v2.6 Test #3 | The goal of "v2.X test #3" is
to heat the hot plate to 200°C over the
course of 20 minutes, and with v2.6, I have |
|
|
122
|
Thu Jan 12 11:38:26 2023 |
Koji | General | General | How to move the large engine hoist through the narrow door | See the attachments. |
|
|
49
|
Wed Nov 17 09:27:04 2021 |
Jiri Smetana | General | General | Lagrangian Model - Translation & Pitch | I've been having a look at the transfer
functions for the translation and pitch of
both masses. I'm attaching the plot of |
|
|
50
|
Wed Dec 15 06:43:43 2021 |
Jiri Smetana | General | General | Lagrangian Model - Translation & Pitch | I've checked the validity of my state
space model in a couple of ways so that we
have confidence in the results that it gives. |
|
|
44
|
Tue Oct 26 08:09:08 2021 |
Jiri Smetana | General | General | Lagrangian Suspension Model - Extended Body | I've been testing out the extended
body lagrangian models and I'm trying
to understand the ground motion and force |
|
|
8
|
Wed Mar 24 17:36:46 2021 |
Paco | General | Design specs | Least common multiple stacks and varL cost | Update on ETM/ITM coating design;
-
Following what seemed like a good, intuitive
suggestion from Anchal, I implemented a parameter |
|
|
83
|
Wed Sep 28 22:11:31 2022 |
Jennifer Hritz | General | Optical Contacting | Looked at Thor Lab slides | While finalizing my work plan for the quarter,
I decided to look at the Thor Lab slides.
This was instructive because they highlighted |
|
|
84
|
Thu Sep 29 18:36:40 2022 |
Jennifer Hritz | General | Optical Contacting | Looked at Thor Lab slides (continued) | Continuining with my casual exploration
of the Thor Lab slides, I heated them from
off --> low --> med --> high, with |
|
|
1
|
Thu May 21 11:51:44 2020 |
Koji | General | General | Mariner Elog Test | The first entry of the Mariner elog post |
|
|
45
|
Wed Nov 3 02:52:49 2021 |
Koji | General | Suspension | Mariner Sus Design | All parameters are temporary:
Test mass size: D150mm x L140mm
Intermediate mass size W152.4mm x |
|
|
46
|
Thu Nov 4 00:42:05 2021 |
Koji | General | Suspension | Mariner Sus Design | Some more progress:
- Shaved the height of the top
clamp blocks. We can extend the suspension |
|
|
51
|
Thu May 5 19:56:25 2022 |
Koji | General | Suspension | Mariner Suspension Cryo shield Install / Removal steps | Does this work? Is this insane? |
|
|
52
|
Tue May 10 18:29:11 2022 |
rana | General | Suspension | Mariner Suspension Cryo shield Install / Removal steps | |
|
|
79
|
Fri Aug 26 14:24:57 2022 |
Radhika | General | Heat Load | Mariner TM Cooldown model | Here I describe the current radiative cooldown
model for a Mariner test mass, using parameters
from the most recent CAD model. A diagram |
6x |
|
80
|
Mon Aug 29 15:44:46 2022 |
Radhika | General | Heat Load | Mariner TM Cooldown model | Here is a more detailed analysis of varying
the length and radius of the snout.
Attachment 1 plots the heat load |
|
|
81
|
Wed Sep 7 10:42:12 2022 |
Radhika | General | Heat Load | Mariner TM Cooldown model | The attached plot (upper) compares the
heat load delivered to the test mass from
various snout lengths (end to end), as a |
|
|
128
|
Wed Apr 12 12:03:34 2023 |
Radhika | General | Heat Load | Mariner TM Cooldown model | Here we lay out the Mariner cryocooler
requirements and discuss the most recent
cooldown model, which includes a cryocooler that cools |
|
|
30
|
Fri Sep 24 13:12:00 2021 |
Radhika | General | Heat Load | Mariner cooldown model status + next steps | *Note: the current modeling script can
be found at: CryoEngineering/MarinerCooldownEstimation.ipynb
Nina pointed me to the current |
|
|
31
|
Mon Sep 27 17:01:53 2021 |
rana | General | Heat Load | Mariner cooldown model status + next steps | How
about a diagram so that we can understand |
|
|
32
|
Wed Sep 29 16:15:19 2021 |
Radhika | General | Heat Load | Mariner cooldown model status + next steps | Attachment 1 is a geometric diagram that
reflects the current state of the ITM cooldown
model, introduced in [30]. |
|
|
37
|
Tue Oct 5 17:46:14 2021 |
Radhika | General | Heat Load | Mariner cooldown model status + next steps | Building on [32],
I added a copper cold finger to conductively
cool the inner shield, instead of holding |
|
|
42
|
Fri Oct 15 13:45:55 2021 |
Radhika | General | Heat Load | Mariner cooldown model status + next steps | I used the same model in [37]
to consider how test mass length affects
the cooldown. Attachment 1 plots the curves |
|
|
43
|
Fri Oct 15 14:31:15 2021 |
Radhika | General | Heat Load | Mariner cooldown model status + next steps | I reran the cooldown model, setting the
emissivity of the inner surface of the inner
shield to 0.7 (coating), and the emissivity |
|
|
38
|
Mon Oct 11 15:22:18 2021 |
Yehonathan | General | General | Microcomb alternatives | Following our discussion at the Friday
JC meeting, I gathered several resources
and made a small simulation to show how frequency |
|
|
39
|
Tue Oct 12 12:44:44 2021 |
Jiri Smetana | General | General | New Damping Loop Model | I've ironed out the issues with my
MATLAB model so that it now shows correct
phase behaviour. The problem seems to arise |
|
|
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 |
|
|
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 |
|
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 |
|
|
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 |
|
|
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 |
|
|
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] |
|
|
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) |
|
|
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] |
|
|
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 |
|
|
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 |
|
|
Draft
|
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​ and |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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. |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|