 Wed Jan 10 15:27:18 2024, Shane, Update, Cleanroom, cleanroom cleaning and particle count
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[Aiden, Shane]
cleaning cleanroom and particle count
2:03 pm: changed sticky floor mats
2:05 pm: started particle count
zone 3: 0.3 u: 48630.5 u: 12051.0
u: 872
zone 4: 0.3 u: 19530.5 u: 7891.0 u: 457
2:35 |
Thu Jan 18 18:06:49 2024, shane, Update, Cleanroom, cleanroom 5 zone particle count measurement 
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| Here's today's full five zone measurement of the cleanroom |
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Fri Feb 2 19:18:24 2024, shane, Update, Cleanroom, cleanroom cleaning and particle count
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[Aiden, Shane, Luis, Luke]
cleaning cleanroom and particle count
5:10 pm: ran zero count test on particle counter
5:14 pm: started particle count
NOTE: initial counts
are significantly above allowed limit. ~10 times larger than ISO class 5 standard in the smallest size range. Realized partway through ceiling tile changes |
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Wed Feb 7 12:43:22 2024, shane, Update, Cleanroom, cleanroom particle counts (full 5 zone measurement)
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| Here's today's full 5 zone measurement of the cleanroom. Everything is back under the requirement. |
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Tue Feb 20 11:31:49 2024, Tyler, Update, Cleanroom, Garment Cabinet Door Replacement
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[Luis, Luke, Pooyan, Tyler]
The replacement door for the HEPA garment cabinet arrived last week, and was installed on Thursday. However, it looks
like there's a small gap between the door and where the hinge is attached to the cabinet frame. No screws were provided with the replacement door. If we
want to perform any adjustments, we have to be very careful; the screws break very easily.
|
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Wed Feb 21 11:58:30 2024, Shane, Update, Cleanroom, cleanroom cleaning and particle count
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[Luke, Shane, Tyler]
cleaning cleanroom and particle count
11:50 am: ran zero count test on particle counter
11:55 am: started particle count
zone 3: 0.3 u: 17870.5
u: 5811.0 u: 166
zone 4: 0.3 u: 6230.5 u: 2901.0 u: 124
12:17 |
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Wed Apr 17 15:07:04 2024, Shane, Update, Cleanroom, Cleanroom cleaning and particle count
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[Mohak, Luke, Luis, Shane, Cynthia, Michael, Xuesi]
cleaning cleanroom and particle count
NOTE: particle counter was found dead, with the charging dock unplugged. For future reference, if you need to unplug
the dock, please either plug it back in when you're done, or make a note in an elog so someone else can come down and charge it. |
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Thu May 16 15:23:14 2024, Shane, Update, Cleanroom, Cleanroom cleaning and particle count
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[Luis, Michael, Luke, Shane]
cleaning cleanroom and particle count
1:45 pm: ran zero count test on particle counter
1:50 pm: started particle count
zone 3: 0.3 u: 2660 0.5
u: 3321.0 u: 41
zone 4: 0.3 u: 81060.5 u: 24941.0 u: 831
2:08 |
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Tue Jun 25 12:34:18 2024, Shane, Update, Cleanroom, cleanroom cleaning and particle count
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[Luke, Shane, Xuejun, Mohak, Michael, Tyler, Cynthia]
cleaning cleanroom and particle count
10:45 am: ran zero count test on particle counter
11:02 am: started particle count
zone 3: 0.3 u: 32840.5
u: 12471.0 u:332
zone 4: 0.3 u: 18290.5 u: 5811.0 u: 207
11:15 |
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Thu Jun 27 13:42:02 2024, Shane, Update, Cleanroom, cleanroom 5 zone particle count measurement
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Here's today's 5 zone measurement of the cleanroom. We're above the limit by a bit in zone three (all three size ranges), likely as a result of the recent
work installing FROSTI, so it could probably use another focused cleaning. Everything else is below the limit. |
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Fri Jun 28 10:43:13 2024, Xuejun, Update, Cleanroom, Frosti
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[Xuejun, Tyler]
We moved Frosti into the cleanroom and debugged it to make sure everything was working. One of the DB25 pins broke off at the connector
for element 1 so it needed to be recrimped. Element 6 short circuited but fixed with adjustment to the heater power pin position. We connected the power
and sensor connectors to the power box and recalibrated the RTD sensors.
|
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Mon Jul 29 14:30:16 2024, Tyler, Update, Cleanroom, RIN Measurement Set-up
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[Tyler]
I have begun moving parts into the cleanroom for the upcoming FROSTI RIN tests that will be conducted within the next few weeks. While waiting
for the rest of the equipment to arrive to perform the full-scale tests, I have additionally moved the FROSTI under the shelf above the optical table,
where it will stay for the meantime. As always, please use caution when in the cleanroom. Aside from the FROSTI, the IR photodetectors that will be used |
 Mon Aug 12 16:24:34 2024, Tyler, Update, Cleanroom, RIN Measurement Update 1
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[Tyler]
For some preliminary tests, I moved the IR photodetectors outside of the cleanroom and onto the other optical table. The basic goal was
to obtain a signal from both photodetectors. To achieve this, one of the heater cartridges used for early FLIR measurements months ago was hooked up to
a power supply (PS). The PS was set to supply 0.20 A with a voltage of 2.8 V; the corresponding power is thus 0.56 W. With this, I was able to measure |
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Thu Oct 3 19:35:04 2024, Shane, Update, Cleanroom, Cleanroom cleaning and particle count
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[Luke, Michael, Cynthia, Mary]
cleaning cleanroom and particle count
12:25 pm: started particle count
zone 3: 0.3 u: 46140.5 u: 8721.0 u:83
zone
4: 0.3 u: 24110.5 u: 4151.0 u: 83
12:48 pm: began surface check and wipedown, including |
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Thu Nov 14 10:46:20 2024, Luke , Summary, Cleanroom, Cleanroom cleaning
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[Luke, Luis, Michael]
cleaning cleanroom and particle count |
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Wed Jan 8 17:35:57 2025, Luke , Summary, Cleanroom, Cleanroom cleaning
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[Luke, Tyler, Cynthia, Shane, Michael]
Summary of Cleaning Activities:
We began cleaning Room 1119 at 2:00 PM. |
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Sun Feb 23 12:11:43 2025, Luke , Summary, Cleanroom, Cleanroom cleaning
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[Luke, Mary, Luis]
Particle Count Measurements:
Pre-cleaning (8:40 am):
Zone 3:
0.3 µm: 441
0.5 µm: 44
1.0 |
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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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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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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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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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Tue Apr 11 13:15:40 2023, Cao, Infrastructure, Clean & Bake, Nitrogen gas tank replaced
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The nitrogen gas tank has been replaced with a new unit. The new tank is ultra pure nitrogen (>99.9% nitrogen).
The new tank has been placed and secured
to the rack where the old one is; cap is removed and regulator is reinstalled onto the new tank. |
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Tue Jun 13 13:25:05 2023, Aiden, Summary, Clean & Bake, Clean and Bake Batch 13
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Cleaned and Baked the new 1.33" and 2.75" blanks for the vacuum system. Cleaned them with liquinox in the ultra sonic washer for 10 minutes. Then dried
them with nitrogen. Then put the two stainless steel parts into the oven for the following steps;
1. Ramp to 100 degC in 15 minutes
2. Dwell at 100 degC
for 30 minutes
3. Ramp to 200 degC in 30 minutes
4. Dwell at 200 degC for 48 hours
5. Turn off |
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Fri Jun 16 17:40:28 2023, Aiden, Update, Clean & Bake, Clean and Bake Batch 14
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Cleaned and Baked the new and 2.75" copper gaskets for the vacuum system. Cleaned them with liquinox in the ultra sonic washer for 10 minutes. Then dried
them with nitrogen. Then put the copper parts into the oven for the following steps; 1. Ramp to 100 degC in 15 minutes 2. Dwell at 100 degC for 30 minutes
3. Ramp to 175 degC in 30 minutes 4. Dwell at 175 degC for 24 hours 5. Turn off
Also bagged and tagged the parts from Batch 13 and placed them into |
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Wed Jul 5 16:02:12 2023, Aiden, Update, Clean & Bake, Clean and Bake batch 14 Bagging
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| Bagged and Tagged the 2.75" copper gaskets from Batch 14 and placed them into the clean room on the work bench. |
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Tue Sep 12 15:31:31 2023, Aiden, Update, Clean & Bake, Clean and Bake Batch 15
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Cleaned and Baked the SS screws for the heater mount. Check the Clean and Bake data base on the website to get a precise list of the parts and their numbers.
Cleaned them with liquinox in the ultra sonic washer for 10 minutes. Then dried them with nitrogen. Then put the stainless steel parts into the oven for
the following steps; 1. Ramp to 100 C in 15 minutes 2. Dwell at 100 C for 30 minutes 3. Ramp to 200 C in 30 minutes 4. Dwell at 200 C for 48 hours 5. Turn |
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Thu Sep 28 15:17:13 2023, Aiden, Update, Clean & Bake, Clean and Bake Batch 16
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| Bagged and Tagged the parts from batch 15 and started baking batch 16 which includes the 6" to 8" reducer. |
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Tue Oct 3 15:07:48 2023, Aiden, Update, Clean & Bake, Clean and Bake Batch 17
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| Cleaned and baked all the stainless steel parts in Batch 17. Check data base for more details on this. |
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Sat Oct 7 17:10:27 2023, Aiden, Update, Clean & Bake, Clean and Bake Batch 18
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Bagged and tagged the parts from Batch 17 and placed them in the clean room on the optic table. Also started an aluminum batch of parts that included the
kf clamps and the heater mounting parts. |
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Mon Oct 9 21:41:24 2023, Aiden, Update, Clean & Bake, Clean and Bake Batch 19
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| Bagged and tagged the parts from batch 18. Started the Copper batch that includes all the gaskets needed to start the vacuum chamber upgrade. |
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Mon Nov 27 19:34:50 2023, Aiden, Update, Clean & Bake, Clean and Bake Batch 20 Bagging
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| Bagged and tagged bath 20 which included the macor hardware and place it inside the clean room on the table. |
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Sun Dec 17 21:04:15 2023, Jon, Infrastructure, Clean & Bake, Clean and bake lab migrated to 1129
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[Jon, Tyler, Aiden, Luke]
On Friday we completed assembly of the new stainless steel-topped benches in 1129. We then moved the clean and bake equipment from 1119 to its
new larger space in 1129. This included the HEPA flow bench, ultrasonic washer, deionized water drum, nitrogen tanks, and forced-convection oven. The oven |
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Wed Dec 20 10:33:34 2023, Jon, Infrastructure, Clean & Bake, Clean and bake lab migrated to 1129
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Update: I have completed permanent routing of the electrical cables. I also ran the ultrasonic washer's drain line to
the sink drain (the current hose does reach). The new clean and bake lab is now fully operational.
|
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Tue Mar 19 15:22:27 2024, Aiden, Update, Clean & Bake, FROSTI Legs Clean and Bake
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[Aiden, Luke]
Cleaned and baked the Cal Tech FROSTI legs and showed Luke the procedure on how to clean parts. |
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Sun Mar 24 11:50:37 2024, Aiden, Update, Clean & Bake, Cal Tech FROSTI Parts
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| Bagged the FROSTI legs and feet after the conclusion of the clean and bake. They are double bagged and sitting in the flow bench. |
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Tue Nov 5 09:56:04 2024, Luis Martin, Update, Clean & Bake, MR Bake
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[Luke, Luis]
On Friday, 11/1/24, the MR was unpackaged and cleaned under the flow bench. We noticed an ink stain on one of the corners of the
material. After wiping it down with IPA and Vector Alpha wipes, the stain was removed. However, the material showed some wear.
|
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Fri Feb 10 16:34:45 2023, Huy Tuong Cao, Infrastructure, Clean & Bake, Nitrogen gas tank ready to use
|
Cao,
Today I fixed the final bit related to the nitrogen gas tank, which is to apply sealing tape to M-NPT connector of the hose to prevent
leakage
(file: AirGunSealed.jpg)
After application of the tape, no audible leak can be heard from connection between the hose and the air gun. |
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Thu Jun 2 21:55:02 2022, Jon, Update, Cameras, FLIR Camera Setup
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The new FLIR A70 infrared camera has arrived. Tyler and I unpacked it in the lab yesterday. In less than an hour, we succeeded in powering it on and
connecting it to the lab network. We have assigned it the static IP address 192.168.1.6.
Online Configuration Portal
The FLIR camera can be configured, as well as stream live data, through a web browser interface. It can |
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Fri Jun 3 13:03:33 2022, Jon, Update, Cameras, FLIR Camera Setup
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Summary
I have installed the requisite software on chimay for interfacing the FLIR A70 camera in Python. There are two packages required from
FLIR:
Spinnaker SDK, which provides the low-level camera drivers and a C/C++ API.
|
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Mon Jun 6 17:11:48 2022, Jon, Update, Cameras, FLIR Camera Setup
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Today I tested the Spinnaker/PySpin software installations (detailed in ELOG #4) with the FLIR
camera connected to chimay. It works!
Example codes
I was able to run several of the PySpin example codes. In particular, there is one which connects to the camera and streams |
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Tue Jun 21 18:31:49 2022, Cassidy and Phoebe, Update, Cameras, IR Absorbing Screen and FLIR Camera Setup
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Today we set up the IR absorbing screen and the camera on the optical table, as well as tested that the camera was functioning as expected (picking up heat
sources beyond the screen).
Screen Setup
The screen was set up by clamping it between two rectangular posts on each side. First, two posts
were set up with 22 in. between them (thus allowing the screen to span a total distance of up to 24 in. when clamped down). To best stabilize the screen |
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Tue Jul 26 14:10:35 2022, Cassidy, Update, Cameras, Optical Post Replacement and Realignment
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Today I replaced the 3" optical post that the camera rests on with a 2" optical post in order for the screen to correctly fill out the camera's FOV. The
3" post is now in the glass optics cabinet next to the FLIR camera configuration box, wrapped in the protective materials from the 2" post for safekeeping.
There were no issues with the physical replacement of the post, except that the fork clamp on the post needs to be on one of the perpendicular, |
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Wed Mar 29 16:00:36 2023, Pamella, Update, Cameras, FLIR project
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Today Pamella and Tyler started work in the updates for the FLIR project.
We trie for the first time cover the mirrors with aluminum foil and run the
code with this.
We work in figured out how the python codes works with real datas.
To do:
Understand how get the real datas and how to compere that
with the old datas.
Starting test with the FLIR and mirrors with aluminum foil in with the power on.
Testing the FLIR camera more times with the mirrors |
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Mon Oct 23 11:28:05 2023, Tyler, Update, Cameras, FLIR Camera Code Updates
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The past week I've been spending time going through the FLIR code on gitlab. Initially, it had appeared that our measurements with the camera had differed
about 2 degrees C from what the thermocouple was giving (Ref ELOG 181). Upon inspection of the FLIR streaming code, I noticed a few issues:
1. The emissivity
value wasn't set correctly (was 0.999 originally, should be about 0.95).
2. The ambient temperature was set to about 21.6 C (71 F).
3. The distance given |
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Thu Aug 3 18:03:42 2023, Shane, Jon, Update, CDS, Anti-Aliasing chassis complete
|
We finished installing the internal power supply cables in the anti-aliasing chassis today, which concludes its assembly. Work on AI, BI, BO chassis still
underway. |
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Mon Aug 7 13:58:46 2023, shane, Update, CDS, internal power supply cables done for AI chassis
|
Finished assembling and installing the aLigo chassis internal power supply cables in the anti-imaging chassis today. Tested for continuity and everything
looked good. Chassis lid still secured with two temporary screws because I'm not sure what the correct size is. |
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Tue Aug 8 17:03:22 2023, Shane, Jon, Update, CDS, Binary input chassis finished
|
Finished assembly of the binary input chassis today, including DC on/off switch and LED installation. external cable assemblies still needed, but internal
work done. |
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Wed Aug 9 17:35:26 2023, Shane, Update, CDS, Binary output chassis finished
|
Finished the internal wiring for the binary output chassis today, which completes its assembly. Also secured ribbon cables and chassis lid with their respective
screws. Note: one of the spade lugs' internal metal piece is a little loose and had to be reinserted after falling out once. Seemed secure after this,
and I checked continuity on everything and it was all good. |
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Wed Aug 16 16:55:40 2023, Shane, Jon, Update, CDS, external power supply cables finished
|
| All four external power supply cables for the CyMAC chassis are now assembled. Using them now to test if chassis power up correctly. |
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Wed Aug 16 17:17:02 2023, Shane, Jon, Update, CDS, Binary input chassis powering correctly
|
Binary input chassis passed power-on test, and is lighting up as expected. Binary output chassis also successfully powered on. AA and AI chassis not powering
on correctly, need to do some debugging to find the problem. |