 Tue Jul 15 13:13:48 2025, Christina, Update, TCS, Photodetector optical post assembly 
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Tue Jul 15 11:47:53 2025, Xuesi Ma, Infrastructure, ,
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Date and Time: Around 4:50 PM on July 1, 2025
Location and Temperature:
Back of the room 1119, around the working station: 85.7 °F
Front of the room 1119, around the doorway: |
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Tue Jul 15 10:40:23 2025, Christina, Update, TCS,
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[Christina, Ma, Tyler]
Yesterday, Ma and I started taking data for the PSD/CSD measurements while the photodetectors and one of the heater
elements are on (8) and are using the Red Pitaya to compare it to the data we took for the same measurements on the CyMAC. It will be finished Wednesday
morning, and then we plan on starting to take additional recordings in order to conduct the same type of comparison for the dark noise measurements. |
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Mon Jul 14 23:50:22 2025, Tyler, Update, , Cymac ADC update
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I've been looking into the performances of individual channels on the Cymac by computing their individual PSDs and corresponding CSDs that show their
noise relation to each other. It appears some channels do have lower noise floors than others, and some combinations of these actually do perform
similar to the Red Pitaya (showing below the CSD between CHs 3 and 5), although it doesn't look like it's much of an improvement. The best method as of |
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Mon Jul 14 20:45:20 2025, Luke , Summary, Cleanroom, HEPA filter performance metrics
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[Luke, Luis]
We’ve been looking into methods for evaluating the performance of the HEPA filters in the clean room. Measuring flow rate appears to be
a promising approach, since the filter manual specifies a recommended minimum of 70 ft/min. |
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Thu Jul 10 16:41:18 2025, Christina, Update, TCS,
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[Christina, Ma, Tyler]
Pomona Box completed and is now on the server rack in 1119. Additionally, the photodetectors were connected to the
box and set up in front of the heater elements. |
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Tue Jul 8 12:15:04 2025, Tyler, Update, TCS, CyMAC ADC Noise Update
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[Tyler, Christina, Ma, Mary]
Below is attached the ADC noise floor of two CyMAC channels vs the Red Pitaya.
The frequency resolution of these RIN spectra are 16 Hz, with N_meas = 19,308,426 for the CyMAC, and N_meas = 263,024. |
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Tue Jul 8 11:46:55 2025, Maple Matzner, Update, TCS, Update on SURF progress for Jul 8
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Mon Jul 7 17:44:04 2025, Tyler, Update, General, Lab Organization
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[Tyler, Pooyan, Ma, Cece, Luke, Luis, Christina, Maple]
After acquiring some new equipment for the labs, a few of us spent time on Thursday and Friday
sorting through everything and storing them into their appropriate places. New vacuum parts, power supplies, cables, and much more were included. The rooms
are now ready for the lab tours commencing Tuesday afternoon. |
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Mon Jul 7 16:39:18 2025, Christina, Update, TCS, Pomona Box Drawings
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| Below are the drawings for the pomona box modifications |
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Tue Jul 1 13:41:36 2025, Xuesi Ma, Update, ,
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[Ma, Liu]
Slides |
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Tue Jul 1 12:39:42 2025, Tyler, Update, TCS, A# FROSTI Profile Optimization Update
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[Tyler, Liu]
Slides |
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Tue Jul 1 11:04:00 2025, Christina, Update, TCS, FROSTI Reconstruction II
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[Ma, Tyler, Christina]
Finished external reconstruction of the FROSTI by installing all the pins to the 2 DB 25 connectors. To ensure everything
was operating correctly, we did electrical testing by testing continuity and by checking each of the heater elements' RTD and power resistance values and
comparing them to what was tabulated in January. Additionally, we organized the wires and added the stands. |
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Fri Jun 27 15:38:22 2025, Christina, Update, TCS, FROSTI Reconstruction
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[Tyler, Ma, Christina, Luke]
We threaded the wiring of the heater elements through the reflective surfaces and were able to attach each piece with the Macor spacers and
connect both sides. We used the guide rails and screws to ensure proper alignment. The only necessary step left is to add the additional external screws |
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Wed Jun 25 15:44:47 2025, Luke , Update, Cleanroom, Cleanroom cleaning
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[Luke, Luis, Tyler, Ma, Christina, Maple]
We started by cleaning outside of the cleanroom wiping down the cable channel and working our way down. We replaced the air filter in the HEPA
filter with what seemed to be the last one in storage. We then vacuumed outside, before wiping down the inside of the cleanroom. We then vacuumed, mopped, |
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Tue Jun 24 13:47:58 2025, Liu, Update, Interferometer Simulations, Alternative FROSTI A# optimization approach
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| Alternative FROSTI A# optimization approach |
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Tue Jun 24 12:45:16 2025, Tyler, Update, General, Updated ADC spectra
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[Tyler]
Updated ADC noise spectra measurements using diaggui.
NOTE: Will update plots with proper axes |
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Tue Jun 24 11:50:15 2025, Xuesi Ma, Update, ,
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Heater
Element Resistance Test Results
.heater-test-container {
font-family: Arial, sans-serif;
line-height:
1.6;
max-width: 800px;
margin: 20px auto;
padding: 20px;
color: #333;
}
.heater-test-container |
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Tue Jun 17 12:46:47 2025, Tyler, Update, Electronics, CyMAC ADC Noise
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Below are results from power spectra measurements of the CyMAC ADC, computed form 30 hours of time series data, compared to the performance of the Red Pitaya.
The frequency resolution for the initial Cymac CSD is 2 Hz, and 216,000 spectra measurements are averaged together. As of now, it still looks like we haven't
reached the correlated noise floor of the CyMAC. We have a few days worth of data to take from, so I'll look into using a longer period of time. |
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Tue Jun 17 12:22:43 2025, Xuesi Ma, Update, , 12x
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CYMAC
Remote Control Cable Documentation
.connector {
background-color: #f8f9fa;
border-left: 4px solid
#3498db;
padding: 10px 15px;
margin: 15px 0;
}
.pin-table {
width: 100%;
border-collapse: |
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Wed Jun 11 16:33:45 2025, Pooyan, Update, Computers, Luke's ray tracing hosting
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Hosted Lukes model on Chimay. It's available at https://richardsonlab.ucr.edu/real-time-frosti
The
sourcecode is at Github. It is clones at /var/www/html/real-time-frosti, and
this is the block added to nginx config file at /etc/nginx/sites-available/default : |
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Wed Jun 11 16:19:37 2025, Pooyan, Update, CDS, CDS update
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Fast channels recorded to .gwf frame files
Had to add a DAQ Channels block to the c1msc model for those channel to be recorded in the
.gwf frame files. The block is in the CDS_PARTS, and I just had to copy it to our model. Here is the example text for the channels: |
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Tue Jun 10 12:13:00 2025, Xuesi Ma, Update, ,
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By measuring the resistance of the ladder, I obtained a graph of resistance as a function of voltage.
All the heater elements behave consistently, showing only a small standard deviation.
However, heater element 5 shows a significantly larger standard deviation. |
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Tue Jun 10 12:11:14 2025, Pooyan, Update, CDS, CDS update
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The MEDM models issue was fixed. The issue was that building the c1msc model alone was not enough and we had to re-build the c1iop as well, although
no changes has been made to the c1iop. Added a note in the wiki on this for future reference.
For
writing the fast channels to the frame files, our CDS system should have a GDS broadcaster. I followed this |
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Tue Jun 3 13:16:53 2025, Xuesi Ma, Infrastructure, ,
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Date and Time: Around 3:50 PM on June 2, 2025
Location and Temperature:
Back of the room 1119, around the working station: 86 °F
Front of the room 1119, around the doorway: 84.1 |
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Tue Jun 3 13:08:47 2025, Xuesi Ma, Update, ,
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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. |
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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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Tue Jun 3 11:54:06 2025, Cece Ochoa, Update, , CE Cavity Design Update
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| Update on the design for the CE Cavity Mirrors |
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Tue Jun 3 11:50:08 2025, Pooyan, Update, CDS, CDS update
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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 |
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Mon Jun 2 09:45:06 2025, Luke , Update, Scripts/Programs, Ringheater modeling Update
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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. |
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Tue May 27 12:52:22 2025, Xuesi Ma, Update, , 6x
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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. |
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Mon May 26 23:24:33 2025, Michael, Update, Interferometer Simulations, Initial Monte Carlo Simulations for Toroidal Mirrors Project
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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 |
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Mon May 26 11:15:28 2025, Luke, Update, Scripts/Programs, Update to optimization plots
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I have created some new optimization plots. I have also started on a model like the previous Desmos model, but in python.
Slides |
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Wed May 21 14:40:38 2025, Xuesi Ma, Infrastructure, Cleanroom, Cleanroom Temperature
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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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Mon May 19 10:59:14 2025, Xuesi Ma, Infrastructure, ,
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Status Update
Previous Status:
All Sorensen power supplies were turned off. The Cymac system was down (all chassis were offline).
If you need more information or assistance in turning them back on, please contact Xuesi Ma.
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Thu May 15 12:03:41 2025, Xuesi Ma, Infrastructure, Electronics, Notice
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All Sorensen power supplies are turned off. The Cymac system is down (All Chassis are down)
If you need more information or if you need to turn them back on please contact Xuesi Ma. |
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Tue May 13 12:41:06 2025, Tyler, Update, TCS, A# Profiles Update
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| Slides on the A# ITM FROSTI profile modeling efforts can be found here. |
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Tue May 13 12:35:01 2025, Xuesi Ma, Update, ,
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Sun May 11 19:36:42 2025, Luke , Update, Scripts/Programs, New optimization plots
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Slides
I have re-run the optimization plots with the changes mentioned last week.
I have added the heat maps of the HOM scattering from HR deformation and the HOM scattering due to the OPD difference as well as the curvature |
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Fri May 9 20:06:27 2025, Luke , Summary, Cleanroom, Cleanroom cleaning
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[Luke, Mohak, Luis]
We were also able to remove the residue that has built up on the soft walls by donning a skinny bunny suit and with two wipes rubbing both sides
of the soft walls at the same time. The wipes would get gummy very quickly and need to be replaced frequently. |
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Thu May 8 17:41:56 2025, Luis, Update, VAC, RGA Scan Post Bake
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[Ma, Luis]
After taking the RGA scans of the new system, here are the results of the raw and normalized data.We can see that in the post baked system
the He peak is way lower, and the peaks around 20AMU are also significantly lower. |
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Tue May 6 13:19:31 2025, Xuesi Ma, Update, ,
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Tue May 6 13:07:34 2025, Michael, Update, Interferometer Simulations, Initial Convergence Plots for Toroidal Mirrors Project
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Tue May 6 12:25:03 2025, Tyler, Configuration, CDS, Cymac ADC CSD measurement
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An initial measurement of the cymbal ADC CSD is attached below. As of now, it seems that the sensitivity limit is roughly the same as that of the Red Pitaya.
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Sun May 4 18:17:45 2025, Luke , Update, Scripts/Programs, Ringheater modeling Update
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Slides
I have changed some properties of the thermal model and am re-running the thermal sweeping
I have also been messing around with making
a logo |
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Fri May 2 12:34:02 2025, Xuesi Ma, Update, VAC, Stopped bake
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The vacuum chamber has stopped baking.
Current state as of 12:30, 5/2/2025:
The gate valve is open, and the filament of the RGA is on. |
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Wed Apr 30 17:33:14 2025, Xuesi Ma, Update, VAC, Started bake
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[Luke, Ma, Tyler]
The vacuum chamber is currently baking.
Current state as of 5:00 |
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Wed Apr 30 15:43:56 2025, Luis, Update, VAC, Vacuum Update
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[Ma, Luke, Luis]
April 29, 2025
3:30 PM |
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Wed Apr 30 13:42:45 2025, Shane, Update, CDS, UPS comms successful
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Update on UPS1 serial interfacing: communication is now successful. On 4/15/25 we connected to UPS1 via ethernet rather than USB, and manually added its
static ip address (noted in lab network wiki) to the router. Able to connect and unpack all desired data nicely using telnet server connection via telnetlib.
In process of finalizing code and will work next on interfacing UPS2. |
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Tue Apr 29 10:59:25 2025, Liu, Update, Interferometer Simulations, Test Mass Thermal State Decoder with Updated Comparison Cases
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