 Tue Oct 1 19:41:23 2024, Shane, Update, CDS, CyMAC Timing Chassis Issue 
|
[Shane, Luis]
Summary of the issue we've been having with the timing chassis: when we connect only the Valon 5015 to power, the timing signal comes
out of it sinusoidal as expected and the status lights are steady and all looks good. As soon as we connect the 3010 to power, the signal (both coming
out of the 5015 and coming out of the 3010) go flat and the status lights of the 5015 start to flicker.
We think what may be going on is that the 5015 |
|
Thu Oct 17 13:24:23 2024, Shane, Update, CDS, Timing Chassis issue identified
|
[Ma, Luis, Shane]
Working theory for the timing chassis issues had been that the 1A breaker was tripping and
causing the failure of the Valon 5015 and 3010 to output the timing signal correctly. We just tried bypassing the breaker, running 6 V on the benchtop
power supply (set the current limit to 1.5A), with the 5010 generating the sine wave to pass to the 3010. All worked correctly, and there were no issues. |
|
Fri Oct 25 10:56:30 2024, Shane, Update, CDS, Timing Chassis fixed and reinstalled
|
[Ma, Shane]
We replaced the 1A breaker in the timing chassis today with a 4A one, and tested that all is working
well. The chassis successfully outputted the correct signal (image attached). The real time models have also been restarted and the CyMAC diagnostics screen
is showing all green flags. Timing chassis has been closed up and reinstalled in the server rack. |
|
Thu Nov 14 11:58:05 2024, Shane, Update, CDS, Turbo pump connection troubleshooting
|
Attempted connection to the TV551 turbo pump through Varian/Agilent's software on spica. Successful connection established, and we are able to read out
al the readings associated with the pump (status, temperature, etc) through the software, which is actually pretty extensive and well organized. Was able
to stop and restart the pump with no issues. Serial communications seem to be working fine, and the current serial settings (baud rate 9600, serial type |
|
Wed Dec 4 16:01:23 2024, Shane, Update, CDS, Vac serial interfacing troubleshooting update
|
Update on the issue with serial interfacing for the TV 551 turbo pump: Tried a new test today, to see if the commands being sent to the controller were
actually getting through at all, since we know that no response is getting back to us. To test this, I sent the start/stop command for the pump, disconnected
the serial connection and instead connected the controller to spica so I could run the manufacturer's software, and used the manufacturer's sotware to |
|
Tue Jan 28 13:30:46 2025, shane, Update, CDS, Serial comms testing update
|
Attempted to communicate with the smaller vac pump (TwissTor 74) via Agilent software today. Was able to communicate with the pump via python serial connection
code as usual, with no issues. When using the manufacturer software though, it was unable to 'locate' the pump and failed to connect to it. So manufacturer
software works for the big (older) pump, but not the smaller, newer one. Unclear if this is somehow related to the fact that using the manufacturer software |
|
Wed Feb 19 13:44:48 2025, Shane, Update, CDS, Vac serial interfacing update
|
[Jon, Shane]
Debugging update for vac system serial communications: we were able to successfully connect the smaller
turbo pump to the Varian (manufacturer) software today by plugging the controller db9 directly into spica, and verified that the pump was able to send
and receive information. Still no success on communication with the larger pump via python serial code, though. Issue potentially lies in the pinout mapping |
|
Thu Feb 27 18:22:21 2025, Shane, Update, CDS, Ongoing work in server rack and desk area (1119)
|
As part of the vacuum communications debugging process, there is ongoing work in the server rack and desk area in 1119. Please be careful not to move any
of the materials left out in the server rack or on the work bench. |
|
Tue Mar 4 10:47:03 2025, Shane, Update, CDS, Vac system pinouts
|
Attached here are the pinouts, as we currently know them, for the vacuum system. The three items focused on here are the Agilent TwissTorr 74 FS turbo pump
(the smaller/newer pump) and controller, the Agilent TV 551 Navigator turbo pump (the larger/older pump) and controller, and the Eight-channel Perle IOLAN
SDS8 terminal server. The 'field' pinouts in the attached tables refer to the DB9 end of the RJ45F to DB9F converter. |
|
Wed Mar 5 12:16:28 2025, Shane, Update, CDS, Vac system communications update
|
[Shane, Jon]
Update on the serial interfacing with the vacuum system: both turbo pumps are now able to successfully communicate through the code. The older
pump, for unknown reasons, required a newer version of the communication syntax (despite the newer, small pump being able to communicate fine with the |
|
Wed Mar 5 18:13:20 2025, Shane, Update, CDS, vac system comms
|
[Shane, Jon]
Update on the serial interfacing with the Inficon VGC503 pressure gauge: We began setup of the Inficon pressure gauge today. We configured the ethernet
setting via USB and assigned it a static IP address of 192.168.1.30, which is listed in the network table on the lab wiki. It is showing up on the network |
|
Mon Mar 10 17:03:52 2025, Shane, Update, CDS, Pressure Gauge successful connect
|
Vac system serial interfacing update: the pressure gauge is now able to communicate successfully through the code. It's been set to a static ip of 192.168.1.30,
on port 8000. |
|
Thu Apr 3 13:23:37 2025, shane, Update, CDS, UPS interfacing
|
Update on UPS serial interfacing: the driver for the UPS webcard has been installed on spica (for UPS1 in room 1119) and logrus (for UPS2 in room 1129).
Static IP addresses have been assigned for both and noted on the lab wiki. Neither is yet able to connect, as the initial ip address webpage connection
test failed for both. In the process of troubleshooting now. |
|
Fri Jul 22 13:20:28 2022, Phoebe, Update, , Comsol
|
I will be using comsol until 1:30 pm today. I will be updating the model for the heater mount to be thicker in certain areas, so that it can feasibly be
3D printed. Specifically, the radius of the center cartridge mount has been increased to add thickness to the pipe and the arms of the bridge. This will
allow us to print with a much smaller chance for error, as the printer can print objects with a minimum length of 1 mm. |
|
Tue Feb 28 19:33:51 2023, Peter, Update, , 532 M2 Measurements
|
| Y axis of plot in units of micrometers. X axis in units of millimeters. |
|
Wed Mar 8 18:35:52 2023, Pamella, Update, , Lab cleaning
|
Today Pamella finished cleaning of the cleanroom, starting with the HEPA vacuuming, mopping and clearing all floor with IPA wipes.
Also Pamella and Julian
finished cleaning of lab floor, starting with the HEPA vacuuming and mopping.
Shane and Pamella wiped down every surfaces of the laser table, computer
table and the table with the vacuum pieces inside the cleanroom.
Shane, Peter, Tayler, Pamella and Julian then wiped down every surface of the laser table |
|
Fri May 31 19:37:47 2024, Luke, Update, , Vacuum chamber Disassembly
|
[Luke, Aiden, Jon, Michel, Tyler]
Work done:
On Tuesday (5/28) we removed the RGA line with minimal difficulty. On Wednesday (5/29) we removed the turbo
pump, which had a few bolts that we needed to cut. We borrowed a dremel with ceramic blades from the machine shop to help remove some of the bolts. On
Thursday we moved the vacuum chamber onto the floor to check and resecure the heating band on the bottom of the vacuum chamber. We then relocated the posts |
|
Wed Jun 19 18:45:14 2024, Luke, Update, , Vacuum chamber reassembly
|
[Luke, Aiden, Mohak , Tyler]
On Tuesday we had the silver screws for the spherical cube shortened by a quarter of an inch so that they would fit into
the gate valve. We then attached the spherical cube to the vacuum chamber.
On Wednesday we finished assembling the RGA line and the main turbo pump.
|
|
Mon Aug 12 16:35:30 2024, Luke , Update, , Ringheater modeling Update
|
| |
|
Wed Oct 2 10:31:46 2024, Xuesi Ma, Configuration, , Group Meeting Slides 10/2/2024
|
Group Meeting slides for Non-deterministic Heater Response.
|
|
Wed Oct 2 12:05:42 2024, Luke , Update, , Ringheater modeling Update
|
| Power point slides |
|
Wed Oct 2 14:49:59 2024, Liu, Update, , FROSTI ETM actuation
|
Proposed FROSTI ETM actuation on the HOM7 resonance.
Animation |
|
Wed Oct 16 14:13:31 2024, Liu, Update, , FROSTI with non uniform absorption scattering sources
|
| Slides |
|
Wed Oct 23 12:33:54 2024, Luke , Update, , Zernike calculation update
|
PowerPoint slides new
PowerPoint slides older |
|
Mon Jan 27 11:29:38 2025, Xuesi Ma, Update, , Heater Element Test
|
[Ma, Cece, Luke, Mary, Shane]
On Friday (Jan 24), we installed the heater elements on the stand. The heater elements are arranged from 1 to 8, oriented from right to left
as shown in Attachment 1. Each wire has been labeled according to its corresponding element number and type (e.g., RTD connections, heater connections). |
|
Mon Jan 27 23:35:28 2025, Xuesi Ma, Update, ,
|
[Ma]
Installed all the pins to the peek DB 25 connectors |
|
Fri Jan 31 15:03:09 2025, Xuesi Ma, Update, , Heater Element Circuit Check
|
table {
width: 100%;
border-collapse: collapse; /* Merges borders into a single line */
}
th,
td {
border: 1px solid #ddd; /* Adds a 1px solid border */
padding: 8px;
text-align: left;
}
th
{
background-color: #f2f2f2; /* Adds a light gray background to headers */
}
[Ma] Wed 1/29/2025 |
|
Mon Feb 3 13:17:21 2025, Xuesi Ma, Update, ,
|
[Ma]
changed all zip ties to peek zip ties, and grouped wires together. The setup is ready to go into the chamber. |
|
Tue Feb 18 10:01:07 2025, Xuesi Ma, Update, ,
|
[Ma, Pooyan, Tyler]
On Friday, we connected the vacuum chamber with the Cymac. |
|
Tue Feb 18 10:02:16 2025, Xuesi Ma, Update, , Group Meeting Slides 2/18/2025
|
| https://docs.google.com/presentation/d/1WiV2VqS0BzXNCK6VYYQ-Ty8xlHnzXatQaFbMf1-0rsY/edit?usp=sharing |
|
Tue Feb 25 10:02:32 2025, Xuesi Ma, Update, ,
|
1424039912.625576 2025/02/19 22:38:14 UTC Time start
24V 2.8A right after start all 8 elements
1424044804.902443 2025/02/19 23:59:46 UTC Time stop |
|
Tue Mar 4 03:33:18 2025, Xuesi Ma, Update, , Update 6x
|
Spikes Appear Again, need to address it systematically.
Power on and off before reaching steady state ✔
At 12V, the rise and fall time of heater elements are different from 24V. |
|
Tue Mar 11 10:43:57 2025, Xuesi Ma, Update, ,
|
Continue investigation in the spikes
Pulsed ADC with a function generator and find no spikes. Rules out ADC for causing the spikes
Loopback test that bypasses the FROSTI Chassis shows spikes (spikes happened on all channels at the same time) |
|
Mon Mar 31 15:41:56 2025, Xuesi Ma, Update, ,
|
The result from AI Chassis bypass test showed that the AI Chassis may be the problem. There are no spikes from DAC's direct output.
All chassis except timing chassis are turned off. Power supplies for 24V, 18V, and -18V are turned off
The AI chassis has been taken out of the rack for further inspection |
|
Tue Apr 1 11:47:08 2025, Liu, Update, ,
|
| |
|