 Sat Feb 24 08:53:38 2024, Jon, Infrastructure, Computers, Matlab upgraded to 2023b on Chimay
|
| I upgraded Matlab on chimay to the latest stable release, 2023b. From some quick tests, it appears to be in working order. Let me know of any issues. |
Wed Mar 27 00:03:57 2024, Pooyan, Update, Computers, Chimay relocation to Physics 1129 
|
[Jon, Pooyan]
Moved Chimay from the server rack in Physics 1119 to a new rack in Physics 1129. It is connected to the switch in that rack
and has the same ip address as before.
All services are up and running.
It appears that JupyterHub creates some processes whenever a user
connects to an instance of it, but in some cases does not stop those processes after the user is not using that instance. This results in having lots of |
|
Thu Jun 20 18:01:11 2024, Jon, Infrastructure, Computers, New workstation ws3 in 1129
|
I have repurposed a spare Intel NUC to serve as the first of two planned workstations in 1129. Today I set it up with a fresh installation of Debian 12.5,
assigned it the static IP address 192.168.1.15, and installed the LIGO CDS workstation packages. It is assigned the host name ws3.
Temporarily, the
mouse is borrowed from ws1 in 1119. We need to order another mouse as well as a 25-ft Ethernet cable for connecting the workstation to the 1129 switch, |
|
Mon Jun 24 21:38:25 2024, Pooyan, Infrastructure, Computers, Computer server changes in 1119 and 1129
|
[Jon, Pooyan, Tyler]
A few computer machine changes have been made. |
 Wed Jun 26 15:33:41 2024, Jon, Infrastructure, Computers, New workstation ws3 in 1129
|
Set-up of the first CDS workstation for 1129, ws3, is complete and the machine is ready for use. The login credentials are the same as the other lab
machines.
All that now remains is to install a permanent cable tray for running the new Ethernet cables between the electronics rack and bench (they are |
|
Mon Jul 15 14:49:06 2024, Pooyan, Update, Computers, Synology NAS server setup
|
Installed a Synology NAS server (Synology RackStation RS1221) in lab room 1129, with host name “scribe” and ip “192.168.1.17”. It is mounted on the rack
and each of its 8 storage bays has a 2TB SSD disk. It will be used to set up automated backups of all the lab machines (e.g., chimay, logrus, megatron).
One shared storage is set on it with SHR-2 as its RAID type. It can tolerate the failure of two disks and has 10.4TB of total capacity. |
|
Fri Jul 26 17:25:42 2024, Jon, Infrastructure, Computers, New workstation ws4 installed in 1129
|
Today I installed the second desktop workstation in 1129. The new machine is an Intel NUC13ANHi5, with a 12-Core Intel i5-1340P CPU, 32GB DDR4 RAM, and
a 1TB SSD.
I loaded it with a fresh installation of Debian 12 and installed the LIGO CDS workstation (control room) tools. It is assigned the hostname ws4 |
|
Mon Sep 9 14:27:36 2024, Pooyan, Infrastructure, Computers, Chimay backup attempt
|
One ongoing work is to make all lab machines automatically backed-up on Scribe on a daily basis. The updates should be boatable and stored for some time
(potentially a few weeks) on Scribe. Making whole disk images has already been tried for some of the machines with no problems. (e.g., Cymac and WorkStations)
The same thing can not be done with Chimay though, as it currently has one huge RAID-controlled volume that stores all the information (OS, home |
|
Sun Apr 10 15:39:49 2022, Rutuja Gurav, HowTo, Computer Scripts/Programs, HowTo: Renew the Let's Encrypt SSL certificate using certbot
|
Port 80 is kept closed by default. This might be causing the certbot auto-renewal cronjob to fail. Therefore we must renew the certificate manually.
Step 1: Open port 80. (This is needed as the certificate renewal process runs some tests which requires client communication over |
|
Wed Mar 1 21:27:20 2023, Jon, Infrastructure, Cleanroom, Over-table shelf height raised
|
Jon, Cao
Today we raised the height of the shelf overhanging the cleanroom laser table by 8 inches. This was done to create more vertical clearance between
the top-loading vacuum chamber and the bottom of the shelf. The added clearance should make both removing the chamber lid and inserting large parts easier. |
|
Wed Mar 22 12:16:20 2023, Jon, Infrastructure, Cleanroom, Experimenting with HEPA fan speeds
|
Jon, Cao
In effort to try to reduce the noise level inside the cleanroom, we have dialed all four HEPA fan-filter units (FFUs) down from HIGH to MEDIUM
speed. These dials can only be accessed from inside the cleanroom, by bringing in the large ladder and opening adjacent ceiling tiles. |
|
Tue Apr 4 16:52:08 2023, Jon, Update, Cleanroom, Particle counter docking station
|
Due to the problems we have encountered trying to serially communicate directly with the Met One DR-528 particle counter, I went ahead and ordered the add-on
communications/charging dock. The dock "ethernetizes" the serial communications by wrapping them in TCP packets and transmitting them over the lab network.
This will allow our Python code to communicate using the standard Internet sockets package, rather than PySerial, PyNut, etc.
the docking station arrived |
|
Wed Apr 26 18:05:41 2023, Pamella, Julian, Shane, Update, Cleanroom, cleanroom particle counts and cleaning log
|
pre-cleaning particle counts:
zone 3
0.3 mu: 2494
0.5 mu: 748
1.0 mu 124
zone 4
0.3 mu: 374
0.5 mu: 41
1.0 mu: 0
3:45 pm: Started wiping
the surfaces(laser table,chamber, computer) inside the cleaning room.
4:05 pm: Finished wiped the surfaces
4:08 pm: Began vacuuming |
|
Wed May 31 12:16:28 2023, Shane, Update, Cleanroom, cleanroom particle counts (full 5 zone measurement)
|
| Attached is the full 5 zone particle measurement for the cleanroom after this week's cleaning, 5/31/23. |
|
Thu Jun 22 13:58:00 2023, Pamella, Julian and Shane, Update, Cleanroom, Cleaning and Particle Count
|
[Pamella, Shane, and Julian]
cleaning cleanroom and particle count
12:00 pm: started particle
count
Zone 3
0.3u: 3533
0.5u: 540
1.0u: 166
Zone 4
0.3u: 290
0.5u:
124
1.0u: 41
12:31 pm: Started checking the surface inside the cleanroom and began surface wipedown
12:50 |
|
Tue Jun 27 12:09:37 2023, Shane, Update, Cleanroom, cleanroom 5 zone particle count measurement
|
Attached is 5 zone measurement for cleanroom particulate count. Zone 3 (in front of vacuum chamber) higher than usual, likely due to recent vac work. Slightly
above ISO class 5 standard in 1.0 micron range, measuring 997 particles/cubic meter while ISO standard is 832 particles/cubic meter in this range.
Zero
count test on particle counter performed prior to today's measurement. |
|
Thu Jul 6 13:34:48 2023, Pamella, Shane, Julian, Aiden, Update, Cleanroom, cleaning and particle count
|
[Pamella, Julian, Aiden, and Shane]
cleaning cleanroom and particle count
12:00 pm: started particle count
Zone 3: 0.3 u: 28260.5 u: 4571.0 u: 166
Zone 4: 0.3
u: 4570.5 u: 831.0 u: 41
12:17 pm: began surface check and wipedown. NOTE: found |
|
Wed Jul 19 14:39:19 2023, Pamella, Shane, Aiden, Update, Cleanroom, cleaning and particle count
|
[Pamella, Shane, Aiden]
cleaning cleanroom and particle count
1:10 pm: started particle count
Zone 3: 0.3 u: 2535 0.5 u: 2071.0 u: 41
Zone 4:
0.3 u: 7890.5 u: 411.0 u: 0
1:30 pm: began surface check and wipedown
1:41 pm: started vacuuming |
|
Fri Jul 28 13:07:39 2023, Shane, Aiden , Update, Cleanroom, cleanroom cleaning and particle count 6x
|
[Aiden, Shane]
cleaning cleanroom and particle count
11:08 am: started particle count
zone 3: 0.3 u: 4198 0.5 u: 1080 1.0 u: 581
zone
4: 0.3 u: 12470.5 u: 6231.0 u: 415
11:24 am: break for removal of vac chamber insulation (pictures |
|
Fri Jul 28 13:39:39 2023, shane, Update, Cleanroom, full 5 zone cleanroom particle count
|
| Here's the 5 zone cleanroom measurement from today. |
|
Tue Aug 1 12:48:41 2023, Aiden, Update, Cleanroom, Pre Filter Change
|
Changed the pre filter inside of the 3 stage HEPA system next to the soldering station. It was rather dirty and I have attached images with a clean
filter on the left and the used one on the right. I reset the pre filter age on the system. I tried to see if I could tell if the HEPA filter was dirty
but I could not see it. I did not reset the age of the HEPA or UV stations. They are currently 378 days old.
|
|
Fri Sep 29 11:22:33 2023, Shane, Aiden, Update, Cleanroom, cleaning and particle count
|
[Aiden, Shane]
cleaning cleanroom and particle count
10:06 am: ran zero count test on particle counter
10:07 am: started particle count
zone 3: 0.3 u: 22030.5
u: 8311.0 u: 540
zone 4: 0.3 u: 3740.5 u: 1241.0 u: 124
10:25 |
|
Fri Sep 29 11:53:54 2023, Shane, Update, Cleanroom, 5 zone particle count measurement in cleanroom
|
| Today's 5 zone measurement of cleanroom particulate concentration is attached |
|
Fri Oct 20 16:38:02 2023, Shane, Aiden, Update, Cleanroom, Cleanrooom cleaning and particle count
|
[Aiden, Shane]
cleaning cleanroom and particle count
3:16 pm: started particle count. NOTE: we are not within the ISO class 5 standard for any size ranges in zone
3. ~6000 above limit in 0.3 u, ~2000 above in 0.5, ~200 above in 1.0 |
|
Thu Nov 9 13:57:58 2023, Shane, Luis, Aiden, Tyler, Update, Cleanroom, cleanroom cleaning and particle count
|
[Aiden, Shane, Luis, Tyler]
cleaning cleanroom and particle count
12:30 pm: Tyler and Aiden started organizing cables in cleanroom
12:35 pm: started particle count in flow bench
0.3 u: 116810.5 u: 32841.0 u: 1039
12:50 pm: started cleanroom particle count
zone 3: 0.3 |
|
Thu Nov 9 19:06:46 2023, shane, Update, Cleanroom, 5 zone cleanroom measurement
|
Here's today's five zone measurement, taken ~5 hours after the cleaning. Zone 5 (closest to fire cabinet and back wall) is a bit over the limit in all size
ranges (about 1500 particles in 1.0u size range over), and zone 2 is slightly over the limit in the 1.0u range, but everything else is under the requirement.
|
|
Fri Nov 10 14:16:04 2023, shane, Update, Cleanroom, new cleanroom zone diagram
|
since the vac system has been moved and made permanent, here's a new diagram of the cleanroom zones. The zones themselves haven't moved, but the diagram
has been updated to reflect the new set up of the cleanroom. |
|
Thu Nov 16 17:12:42 2023, Luis, Shane, Mohak, Update, Cleanroom, Cleanroom cleaning and particle count
|
[Shane, Luis, Mohak]
cleaning cleanroom and particle count
3:37 pm: started particle count
zone 3: 0.3 u: 12050.5 u: 7481.0 u: 249
zone
4: 0.3 u: 14960.5 u: 7481.0 u: 290
3:57 pm: began surface check and wipedown, including |
|
Fri Nov 17 14:06:01 2023, Shane, Update, Cleanroom, 5 zone particle count
|
Here's today's 5 zone particle count measurement for the cleanroom. Zone 5 (closest to back wall by fire cabinet) is still above the limit for the larger
size ranges; everything else is in good shape and roughly 10 times under the limit. Not sure why zone 5 is still so dirty (maybe some of the electronics
being stored in bags/bins on the upper shelf of the desk aren't clean?) but will focus cleaning efforts on this zone next time. |
|
Thu Dec 7 14:13:15 2023, Shane, Update, Cleanroom, cleanroom cleaning and particle count
|
[Aiden, Shane, Michael, Luke, Cynthia]
cleaning cleanroom and particle count
12:30 pm: ran zero count test on particle counter
12:32 pm: started particle count.
zone 3: 0.3 u: 59,488
0.5 u: 95611.0 u: 706
zone 4: 0.3 u: 77320.5 u: 19121.0 u: 290
|
|
Wed Jan 10 15:27:18 2024, Shane, Update, Cleanroom, cleanroom cleaning and particle count
|
[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
|
| Here's today's full five zone measurement of the cleanroom |
|
Fri Feb 2 19:18:24 2024, shane, Update, Cleanroom, cleanroom cleaning and particle count
|
[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 |
|
Wed Feb 7 12:43:22 2024, shane, Update, Cleanroom, cleanroom particle counts (full 5 zone measurement)
|
| Here's today's full 5 zone measurement of the cleanroom. Everything is back under the requirement. |
|
Tue Feb 20 11:31:49 2024, Tyler, Update, Cleanroom, Garment Cabinet Door Replacement
|
[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.
|
|
Wed Feb 21 11:58:30 2024, Shane, Update, Cleanroom, cleanroom cleaning and particle count
|
[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 |
|
Wed Apr 17 15:07:04 2024, Shane, Update, Cleanroom, Cleanroom cleaning and particle count
|
[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. |
|
Thu May 16 15:23:14 2024, Shane, Update, Cleanroom, Cleanroom cleaning and particle count
|
[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 |
|
Tue Jun 25 12:34:18 2024, Shane, Update, Cleanroom, cleanroom cleaning and particle count
|
[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 |
|
Thu Jun 27 13:42:02 2024, Shane, Update, Cleanroom, cleanroom 5 zone particle count measurement
|
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. |
|
Fri Jun 28 10:43:13 2024, Xuejun, Update, Cleanroom, Frosti
|
[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.
|
|
Mon Jul 29 14:30:16 2024, Tyler, Update, Cleanroom, RIN Measurement Set-up
|
[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
|
[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 |
|
Thu Oct 3 19:35:04 2024, Shane, Update, Cleanroom, Cleanroom cleaning and particle count
|
[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 |
|
Thu Nov 14 10:46:20 2024, Luke , Summary, Cleanroom, Cleanroom cleaning
|
[Luke, Luis, Michael]
cleaning cleanroom and particle count |
|
Wed Jan 8 17:35:57 2025, Luke , Summary, Cleanroom, Cleanroom cleaning
|
[Luke, Tyler, Cynthia, Shane, Michael]
Summary of Cleaning Activities:
We began cleaning Room 1119 at 2:00 PM. |
|
Sun Feb 23 12:11:43 2025, Luke , Summary, Cleanroom, Cleanroom cleaning
|
[Luke, Mary, Luis]
Particle Count Measurements:
Pre-cleaning (8:40 am):
Zone 3:
0.3 µm: 441
0.5 µm: 44
1.0 |
|
Tue Apr 11 13:15:40 2023, Cao, Infrastructure, Clean & Bake, Nitrogen gas tank replaced
|
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. |
|
Tue Jun 13 13:25:05 2023, Aiden, Summary, Clean & Bake, Clean and Bake Batch 13
|
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 |
|
Fri Jun 16 17:40:28 2023, Aiden, Update, Clean & Bake, Clean and Bake Batch 14
|
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 |