| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
44
|
Mon Mar 6 15:32:58 2023 |
Jon | Infrastructure | General | Cabinet installation completed | Jon, Cao, Peter
This morning Facilities delivered
and installed two new cabinets with sliding |
|
|
53
|
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 |
|
|
56
|
Fri Mar 24 07:14:38 2023 |
Jon | Infrastructure | Computers | Workstation 2 (ws2) mounted on cleanroom cart | The ws2 cart has been thoroughly wiped down
with IPA wipes and moved inside the cleanroom.
I have reconnected it to power and Ethernet |
|
|
67
|
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 |
|
|
94
|
Tue May 9 15:49:20 2023 |
Jon | Infrastructure | VAC | Permanent cable routing | Today I brought in a fresh supply of zip
ties (we now have 1500 in the tool chest)
and used them to permanentize the cable routing |
|
|
95
|
Tue May 9 20:55:12 2023 |
Jon | Infrastructure | VAC | Calibrated Ar leak rate | For future reference, the calibrated Argon
source has a leak rate of 7.55E-8
atm cc/s, or equivalently |
|
|
98
|
Sun May 14 15:50:48 2023 |
Cao | Infrastructure | Computers | High resolution display of logrus machine | [Cao]
The display resolution of the
logrus has been 1064x768 and has been the
only option, which is not great. While remote |
|
|
122
|
Tue Jun 13 21:08:46 2023 |
Pamella | Infrastructure | VAC | Heater system - Installation | [Pamella, Cao and Jon]
Heating system
installation
Today we
started installing the equipments for the |
|
|
129
|
Tue Jun 20 22:14:24 2023 |
Pamella, Cao | Infrastructure | VAC | Short term testing of vacuum heater controller units | [Pamella, Cao]
Fuse replacement
Replace blown 10A fuse
in ucontroller outside cleanroom
|
|
|
130
|
Wed Jun 21 20:25:05 2023 |
Cao | Infrastructure | VAC | Vacuum chamber bake attempt 1 | TL;DR:
We are not yet able to
bake the chamber at 150 deg C due to some
current limit, most likely caused power supply |
6x |
|
136
|
Tue Jun 27 21:47:56 2023 |
Jon | Infrastructure | VAC | Vacuum chamber bake attempt 1 | The electrical overload problem encountered
in ELOG 130
has been resolved. The two heater controllers, |
|
|
137
|
Wed Jun 28 15:58:56 2023 |
Shane, Cao | Infrastructure | VAC | Power trip problem remains, source of smoke is insulation | [Shane, Cao]
With the new change
in wiring configuration described in elog
136, |
|
|
138
|
Thu Jun 29 18:27:26 2023 |
Jon, Cao | Infrastructure | VAC | Vacuum bake attempt 3: success! | [Jon, Cao]
Summary : We resolved
problems with heaters tripping power and
were able to proceed with chamber baking
|
|
|
141
|
Mon Jul 3 14:32:24 2023 |
Cao | Infrastructure | VAC | Cooling down vacuum chamber | [Cao]
After leaving the the chamber
to bake at 120 deg C from Thursday 3:41 pm.
Today I started to cool the chamber down |
|
|
142
|
Mon Jul 3 16:26:21 2023 |
Cao | Infrastructure | DAQ | Access and control Red Pitaya remotely and run it on local machine | [Cao]
To access and control the Red
Pitaya using Python locally on a machine
within the local network, one should follow |
|
|
145
|
Wed Jul 5 15:46:47 2023 |
Aiden, Cao | Infrastructure | VAC | Vacuum Chamber Baking Update |
Cao and Aiden put the RGA back on to
the chamber and measured the outgassing rate
after the chamber has cooled down from its |
|
|
198
|
Wed Aug 9 11:32:56 2023 |
Jon | Infrastructure | General | New power cables | I delivered new NEMA 5-15 (120V / 15 A)
power cables to the lab for the following
items: |
|
|
294
|
Sun Dec 17 21:04:15 2023 |
Jon | Infrastructure | Clean & Bake | Clean and bake lab migrated to 1129 | [Jon, Tyler, Aiden, Luke]
On Friday we completed assembly of
the new stainless steel-topped benches in |
|
|
297
|
Wed Dec 20 10:33:34 2023 |
Jon | Infrastructure | Clean & Bake | Clean and bake lab migrated to 1129 | Update: I
have completed permanent routing of the electrical
cables. I also ran the ultrasonic washer's |
|
|
303
|
Mon Jan 15 22:29:34 2024 |
Jon | Infrastructure | General | Cabinet installation & lab clean-up completed | [Jon, Tyler, Aiden, Shane, Pooyan, Michael,
Cynthia, Luke]
On Wednesday, we completed long list |
|
|
330
|
Tue Feb 20 08:01:30 2024 |
Jon | Infrastructure | General | Power and network equipment installed in 1129 rack | [Jon, Tyler, Pooyan, Luis, Luke, Peter]
On
Thursday we installed the power conditioning/distribution
equipment and networking equipment in the |
|
|
339
|
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 |
|
|
377
|
Mon Jun 17 11:47:46 2024 |
Liu | Infrastructure | General | Temporary cooling units for the labs | Below are the temporary cooling units installed
last week in labs 1119 and 1129. They are
the temp. replacement for the building AC |
|
|
379
|
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 |
|
|
382
|
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 |
|
|
385
|
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 |
|
|
402
|
Thu Jul 11 21:01:37 2024 |
Jon | Infrastructure | General | Cable tray installed in 1129 | Today I installed a 10' cable tray in 1129,
for permanently routing Ethernet lines to
the workstations. It is securely bolted to |
|
|
412
|
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 |
|
|
418
|
Tue Jul 30 07:42:47 2024 |
Jon | Infrastructure | General | Cable tray installed in 1119 | Yesterday I installed another 5' cable tray
in 1119, for permanently routing Ethernet
lines to the L-bench. It is securely bolted |
|
|
437
|
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 |
|
|
578
|
Thu May 15 12:03:41 2025 |
Xuesi Ma | Infrastructure | Electronics | Notice | All Sorensen power supplies are turned
off. The Cymac system is down (All Chassis
are down) |
|
|
579
|
Mon May 19 10:59:14 2025 |
Xuesi Ma | Infrastructure | | |
Status Update
Previous Status: |
|
|
580
|
Wed May 21 14:40:38 2025 |
Xuesi Ma | Infrastructure | Cleanroom | Cleanroom Temperature |
Date and Time:
Around 2:20 PM on May 21, 2025
Location and Temperature: |
|
|
589
|
Tue Jun 3 13:16:53 2025 |
Xuesi Ma | Infrastructure | | |
Date and Time:
Around 3:50 PM on June 2, 2025
Location and Temperature: |
|
|
613
|
Tue Jul 15 11:47:53 2025 |
Xuesi Ma | Infrastructure | | |
Date and Time:
Around 4:50 PM on July 1, 2025
Location and Temperature: |
|
|
640
|
Tue Sep 2 18:33:38 2025 |
Liu | Infrastructure | General | New lab room 1125 layout and measurement | Action items for facilities
Ceiling lights replacement
Fume |
|
|
651
|
Wed Oct 8 14:45:12 2025 |
Xuesi Ma | Infrastructure | VAC | RGA Chamber Pressure | RGA Chamber pressure is currently at 3.68e-4
torr. |
|
|
662
|
Thu Nov 20 12:40:47 2025 |
Xuesi Ma | Infrastructure | General | Room 1125 Optical Table | Cleaned off the tapes on the optical table
with acetone. |
|
|
670
|
Thu Jan 22 10:10:31 2026 |
Jon | Infrastructure | General | Lab floor plans | Attached are the starting and final floor
plans for the February 2026 expansion into
the Physics 1125 lab. |
|
|
672
|
Thu Jan 22 13:18:12 2026 |
Pooyan | Infrastructure | General | Lab floor plans | The working document of tasks regarding
moving the clean room is attached. Needs
LIGO account to access and edit.
|
|
|
676
|
Thu Feb 5 11:42:47 2026 |
Jon | Infrastructure | General | Lab floor plans | [Audrey, Cece, Jon, Ma, Mary, Michael,
Pooyan, Tyler, Shane]
We have completed the preliminary |
|
|
682
|
Thu Feb 12 12:25:38 2026 |
Xuesi Ma | Infrastructure | General | Lab floor plans | [Cece, Ma, Mary, Pooyan, Tyler, Paul]
We have continued the reorganization |
8x |
|
689
|
Thu Mar 5 12:08:47 2026 |
Pooyan | Infrastructure | Cleanroom | Cleanroom HEPA fan defect | [Pooyan, Ma, Mary, Tyler]
While re-installing the clean-room
HEPA fan filters, we realized that one of |
|
|
691
|
Wed Mar 11 19:38:21 2026 |
Pooyan | Infrastructure | Cleanroom | Parts and things to get after the cleanroom move |
concrete Caulk to fill the drill
holes in 1119
Example [Pooyan:
I have a caulk gun and silicon caulk at home, |
8x |
|
701
|
Sun Apr 19 15:22:08 2026 |
Pooyan | Infrastructure | Cleanroom | HEPA fan air flow measurment | [Ma, Mary, Tyler, Pooyan]
HEPA fan air flow measurements are
done with the fans sitting on their side |
|
|
708
|
Sun May 3 21:13:14 2026 |
Pooyan | Infrastructure | Cleanroom | Cleanroom HEPA fan install | [Ma, Cece, Pooyan, Tyler]
We installed the repaired HEPA fans
on top of the cleanroom, and cleaned the |
|
|
717
|
Mon Jun 15 22:30:09 2026 |
Cece Ochoa | Infrastructure | Inventory | Optics Inventory | Spreadsheet of all tabletop optical parts
in 1129 (Cabinet 1)
linked here
Note that a couple |
|
|
718
|
Thu Jun 18 08:40:07 2026 |
Mary | Infrastructure | General | Fume hood | [Ma, Mary]
The tape residue on the fume hood
was cleaned using acetone; however, the acetone |
|
|
721
|
Thu Jun 25 12:48:29 2026 |
Xuesi Ma | Infrastructure | Cleanroom | | |
|
|
1
|
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 |
|