 Tue Apr 22 12:08:46 2025, Xuesi Ma, Update, , 
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Test 7: Reconnect ribbon cables
Setup: Reconnect all the ribbon cables, and turned on the AI Chassis while isolated
rack
Observation: No spike observed.
Test 8: Reconnect to rack
Setup:
Reconnect the AI Chassis to the rack.
Observation: No spike observed.
Test 9: Restore to original position.
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Tue May 6 13:19:31 2025, Xuesi Ma, Update, ,
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Tue May 13 12:35:01 2025, Xuesi Ma, Update, ,
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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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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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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 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 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 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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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 Jul 1 13:41:36 2025, Xuesi Ma, Update, ,
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[Ma, Liu]
Slides |
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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 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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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 22 12:20:29 2025, Christina, Update, TCS,
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[Ma, Christina, Tyler]
Figure 1 shows the following PSDs for channels 0-15 from the 14 hour test. Figure 2 shows the reduced chi squared and
CSD plots for both the 2 Hz and 16 Hz resolutions.
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Thu Jul 31 14:26:58 2025, Xuesi Ma, Update, ,
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[Tyler, Ma, Christina, Maple, Cece, Mary, Pooyan, Audrey]
We started by cleaning outside of the cleanroom wiping down the cable channel and working our way down while taking the pre-cleaning measurement.
We then stated wiping down the inside of clean room and vacuumed, mopped the outside of the cleanroom. Finally, we vacuumed, mopped, and wiped down the |
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Wed Aug 6 16:31:37 2025, Xuesi Ma, Update, ,
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Date and Time: Around 4:20 PM on Auguest 6, 2025
Location and Temperature:
Back of the room 1119, around the working station: 90.2 °F
Front of the room 1119, around the doorway: |
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Tue Aug 12 13:32:43 2025, Liu, Update, Interferometer Simulations,
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| Differences in Fused Silica parameters. |
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Tue Aug 12 13:46:56 2025, Christina, Update, ,
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Tue Sep 9 12:01:38 2025, Tyler, Ma, Update, ,
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| Slides |
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Tue Sep 9 13:08:44 2025, Xuesi Ma, Update, ,
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| Slides |
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Thu Nov 13 12:39:01 2025, Mary, Update, Interferometer Simulations,
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Thu Jan 22 13:12:29 2026, Mary, Update, ,
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Thu Feb 5 13:59:42 2026, Mary, Update, Interferometer Simulations,
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Thu Feb 12 12:59:29 2026, Mary, Update, ,
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