 Thu May 5 19:56:25 2022, Koji, General, Suspension, Mariner Suspension Cryo shield Install / Removal steps 
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| Does this work? Is this insane? |
 Tue May 10 18:29:11 2022, rana, General, Suspension, Mariner Suspension Cryo shield Install / Removal steps
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cool |
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Thu Jun 16 14:04:30 2022, Juan, General, Suspension, Table for Mariner Suspension Cryo
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Today we looked at possible locations for where we will be setting up Mariner Suspension and Cryo chamber. The first option was the far left table in
the CAML lab but it seems that there is going to be an issue with height clearance, so we have come up with another solution which takes a table from
Koji's lab which is 3'x4' ft and moving it into CAML lab in the back right of the lab. To move the table we may need to call facilities to |
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Thu Jun 16 19:43:36 2022, Koji, General, Suspension, Table for Mariner Suspension Cryo
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- B246/QIL Skyhook
Find the base of Skyhook. It should be in the storage room (B246). Stephen contacted Chub for lab access. Done
Assemble
Skyhook with the base and check the stability/safety/capacity/height/etc
- DOPO |
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Thu Jun 23 21:11:03 2022, Koji, General, Suspension, Table for Mariner Suspension Cryo
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Table moving effort in the OMC lab: See https://nodus.ligo.caltech.edu:8081/OMC_Lab/412
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Mon Jun 27 08:22:22 2022, Juan, General, General, General Update/ Need to do task
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I've managed to cut and crimp wires for the power board for coil driver. I will begin adding components to the coil driver board.
- Add Components to Coil Driver board
- Replace some Sat Amp Componetns |
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Sat Jul 2 09:22:39 2022, Juan , General, General, Progress update
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I've completed one coil driver board.
Hopefully next week I can finish the other 2 boards and make the modifications to the sat amp baords.
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Tue Jul 5 21:06:47 2022, Juan, General, General, Work Update
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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 and Ideally, I'll finish
by tomorrow. |
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Thu Jul 7 10:23:04 2022, Juan, General, General, Update
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| Almost done with coil driver boards |
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Thu Jul 7 15:20:04 2022, rana, General, Optical Contacting, some useful links
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For our optical contacting, Jennifer and I are starting out with glass (microscope slides), with the setup in the EE shop next to the drill press (photos
from Jennifer to follow).
Some interesting links: |
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Fri Jul 8 17:09:10 2022, Juan, General, General, Coil Driver and Sat Amp
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All three coil driver boards are complete and have been tested. Modification for all 4 sat amp have been completed. Ideally, I would like to finish all
the chassis on Monday I have one just about done.
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Mon Jul 11 16:24:31 2022, Jennifer Hritz, General, Optical Contacting, Baselining the temperature output of the Oster hot plate
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This was performed last Friday (7/8).
I secured a thermocouple perpendicular against the hotplate and recorded the maximum temperature the hotplate reached at Low, Medium,
and High. It took about 5 minutes to reach a stable temperature, where stable means that the temperature stayed within +/- 0.5°C for a minute. |
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Mon Jul 11 17:27:39 2022, Jennifer Hritz, General, Optical Contacting, First successful bond
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Note that the slides have "GLOBE" printed on one side. I always bond the opposite using the opposite side without the text.
On Monday (7/11), I began experimenting with bonding, starting with "air-bonding," which is trying to make dry, gently cleaned
slides stick. I achieved my first succesful optical contact with what I call "acidental water-assisted direct bonding" or "water-bonding," where |
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Mon Jul 11 17:39:17 2022, Juan, General, General, Coil driver chassis
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| Finished all 3 Coil Drover chassis and power lines still need to install the rear cables will do that after I finish Sat Amp chassis tomorrow. |
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Wed Jul 13 13:16:33 2022, Juan, General, General, Finished coil driver and sat amp
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I have finished all coil driver and sat amp chassis they all seem to be functioning properly.
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Thu Jul 14 14:55:01 2022, Jennifer Hritz, General, Optical Contacting, Testing isopropanol and methanol
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Note that I am just testing out different techniques, so I have not set up the thermocouples to precisely measure the temperatue.
On Tuesday, I developed a new method of putting water, isopropanol, or methanol on one slide then squishing the other slide on top of it to fill
the gap with the afformentioned liquid. The slides are slippery at first, but as they dried, which took about 15 minutes, the bond forms. The bonds were |
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Mon Jul 18 18:34:29 2022, Paco, General, Design specs, HR coating update
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I've been running the HR coating optimization for mariner TMs. Relative to the specifications found here
we now are aiming for
ITM HR coating of 2000 ppm @ 2050.15 nm, and 1000 ppm @ 1550 nm
ETM HR coating of 25 ppm @ 2050.15 nm, and 1000 ppm @ 1550 |
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Fri Jul 22 13:36:55 2022, Paco, General, Design specs, HR coating update
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Here are some corner plots to analyze the sensitivity of the designs in the previous elog
to a 1% gaussian distributed perturbation using MCMC.
Attachment #1 shows the ETM corner plot |
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Fri Jul 22 13:47:47 2022, Juan, General, General, Update
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Just a general update of what I have been up to deriving Lagrange for double pendulum system and also been looking at code that koji gave to me I've
add comment to some of the code also working on my report. |
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Tue Jul 26 14:17:44 2022, Juan, General, General, OSEMS actuators 8x
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| we have 23 OSEMS they look all full built and I will try and test them this week and or next week. |
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Wed Jul 27 14:50:20 2022, Jennifer Hritz, General, Optical Contacting, Bonding without liquids and narrowing down heating issue
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I have found that, after cleaning the glass with methanol (or even sometimes with just a dry lense-cleaning cloth), I can get glass slides to
bond by rappidly rubbing them together until something sticks. This was inspired by watching "Wizard of Vaz" perform bonds on YoutTube.
While cleaning, I now use enough strength to make the glass squeak, as advised by him. |
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Thu Aug 4 11:26:55 2022, Juan, General, General, Sat Amp
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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 a resistor on the board.
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Thu Aug 4 13:44:56 2022, Jennifer Hritz, General, Optical Contacting, Success with slowly heating
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Yesterday, I did two rounds of slowly heating 4 samples to the maximum hot plate temperature. This was to formally test if my success with a single
sample earlier in the week was a fluke. Note that the hot plate takes about 10-15 minutes to reach a stable temperature when it is turned
up one notch. |
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Mon Aug 8 13:00:56 2022, Juan, General, General, Sat Amp testing of OSEMS
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In the following test, a single Sat Amp chassis that holds Sat Amp Board S1106078 and S1106077
Verification of Sat Amp
First, as the test of the LED driver circuits in the chassis, 8 of various color LEDs were inserted to the appropriate output pins of the chassis. |