ID |
Date |
Author |
Type |
Category |
Subject |
588
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Tue Jun 3 13:08:47 2025 |
Xuesi Ma | Update | | |
We currently have the parts for a DB9 connector but need parts for a DB25 connector, where did we get the parts for the DB9 connector? We may be able to use the same company for the DB25 connector.
Also need a cable for the connectors. Find a DB9 to DB9 cable in 1129, not sure if I can disassemble it and use just the cable.
The pressure in the vacuum chamber rises to 2.12e-8 torr, which needs baking. |
Attachment 1: 934.jpg
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Attachment 2: 933.jpg
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587
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Tue Jun 3 12:16:13 2025 |
Cynthia | Update | Interferometer Simulations | Point absorber simulation on radially averaged profile |
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Attachment 1: update_6_3.pdf
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586
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Tue Jun 3 11:54:06 2025 |
Cece Ochoa | Update | | CE Cavity Design Update |
Update on the design for the CE Cavity Mirrors |
Attachment 1: CE_Arm_Cavity_.pdf
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585
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Tue Jun 3 11:50:08 2025 |
Pooyan | Update | CDS | CDS update |
There are three major issues with the lab's CDS system that should be addressed. They are ordered from the highest priority to the lowest.
- CyMAC has stopped serving the fast channels (65k Hz)
The channels are still there, and the data from the slow (16 Hz) channels is served correctly, but the fast data is not served. As a result, diagggui can not retrieve any information at the moment. Probably the issue is the same as the version conflict between daqd and nds2-server. After installing nds2-server on CyMAC and realizing that the conflict can not be resolved, I reverted the changes so that the CyMAC could be compatible with daqd, but there is a chance that there are still version conflicts that block the fast channels. I suspect that we have broken the MSC model when adding the new button. This could explain both the fasr-channels fault and the unexpected crashes.
UPDATE 6/5 Fixes this by rebuilding the models. Note for the future: The c1iop and c1msc models should be rebuilt together, even if no change has been made to c1iop.
- The fast channels were not saved to the frames
Reviewing the frame files showed that the daqd was only saving the 16 Hz data in the .gwf frame files. I had missed this because I only checked the existence and the integrity of the raw frame files, but never retrieved the high-frequency data itself to check it.
- NDS2-server is installed, but does not distribute the data
I managed to install the nds2-server and its satellite programs on the Chimay, and NFS mount the frame files on it. The server successfully chaches the channel names, frame files, and the data, but fails to list the channels for distribution.
Note: CyMAC machine was strangely disconnected from the network, and required manual reboot. I couldn't find any abnormal logs that could explain what happened. |
584
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Mon Jun 2 09:45:06 2025 |
Luke | Update | Scripts/Programs | Ringheater modeling Update |
Slides
I have added some slides to my meeting updates. The updates include: my choice in position and width, some figures I have added to my write up, and what I think my immediate steps are to wrap up.
I have also made a new FROSTI model that conducts its raytracing in real time. Something that was severely lacking in the previous model. |
583
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Tue May 27 12:52:22 2025 |
Xuesi Ma | Update | | |
Using the configuration in section 2.11.1 in the Sorensen installation and operation manual (attached below), I'm able to remote control the Sorensen power supply.
I use DAC VEXC8 as the external voltage source and a breakout board to match the configuration of connector J3.
I have recorded 7 cycles (attached below), and am now working on analyzing the data. |
Attachment 1: operating-manual-Sorensen-DCS-programmable-switching-dc-power-supplies-1kw-dcs-e.pdf
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Attachment 2: 20250515_171905.jpg
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Attachment 3: 20250515_164637.jpg
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Attachment 4: 20250515_164634.jpg
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Attachment 5: 20250515_164842.jpg
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Attachment 6: resistance_vs_time_all_channels_all_time_RV_ladder.pdf
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582
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Mon May 26 23:24:33 2025 |
Michael | Update | Interferometer Simulations | Initial Monte Carlo Simulations for Toroidal Mirrors Project |
I've run an initial Monte Carlo simulation for statistical comparison of toroidal mirrors for the dual FROSTI TCS case. Below is the link to the slides.
slideshow |
581
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Mon May 26 11:15:28 2025 |
Luke | Update | Scripts/Programs | Update to optimization plots |
I have created some new optimization plots. I have also started on a model like the previous Desmos model, but in python.
Slides |
580
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Wed May 21 14:40:38 2025 |
Xuesi Ma | Infrastructure | Cleanroom | Cleanroom Temperature |
Date and Time: Around 2:20 PM on May 21, 2025
Location and Temperature:
- Back of the room, around the working station: 85.5 °F
- Front of the room, around the doorway: 82.3 °F
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