| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
288
|
Fri Dec 8 11:15:21 2023 |
Peter | Update | VLC Update | VLC Assembly | The optics of the visible light cavity have
been assembled. The mode matching telescope
is folded through the two stirring mirrors |
|
|
287
|
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 |
|
|
286
|
Thu Dec 7 12:42:42 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update | After leaving the RGA on for a few days the
chamber has settled at 2.01 e-8 torr. I also
have good news that the chamber looks to |
|
|
285
|
Mon Dec 4 21:27:53 2023 |
Shane | Update | CDS | ADC-DAC loopback test results | Here are the test results from today's ADC-DAC
loopback tests. Channels 14 and 15 were the
only ones behaving abnormally. Not sure what |
|
|
284
|
Mon Dec 4 11:19:50 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update | [Aiden]
Took some RGA data of the chamber
after it has been cooling down. I do not
believe that this data accurately shows the |
|
|
283
|
Sat Dec 2 18:10:23 2023 |
Aiden | Update | VAC | VAC System Heating Update | [Aiden]
Turned off the heating tape
today in anticipation to take more RGA data
on Sunday or Monday morning before the meeting. |
|
|
282
|
Thu Nov 30 13:58:18 2023 |
Aiden | Update | VAC | VAC System Heating Update | [Aiden]
Came into the lab in the morning
to check on the chamber heating. I decided
to set the PID controllers to 110C rather |
|
|
281
|
Thu Nov 30 13:50:32 2023 |
Tyler | Update | Lore | Workbench Assembly Completed | [Tyler, Luke, Aiden]
The workbenches
are now completely assembled and put into
their final places. Additionally, the tool |
|
|
280
|
Wed Nov 29 21:13:32 2023 |
Aiden | Update | VAC | VAC System Heating Update | Started Bake 8 today. Set the PID controllers
to 120 C and will check in the morning for
equilibrium temperatures for the lid and |
|
|
279
|
Mon Nov 27 19:34:50 2023 |
Aiden | Update | Clean & Bake | Clean and Bake Batch 20 Bagging | Bagged and tagged bath 20 which included the
macor hardware and place it inside the clean
room on the table. |
|
|
278
|
Mon Nov 27 14:22:30 2023 |
Tyler | Update | Lore | 1129 Assembly Update | [Tyler, Michael, Luke, Cynthia]
The
tabletops have been attached to the workbench
frames. Unfortunately, one of the tabletops |
|
|
277
|
Thu Nov 23 12:34:44 2023 |
Jon | Update | CDS | DB25 signal connections for FROSTI heaters | Update: I was able to put the
FROSTI power controller on the lab network.
It is connected to the switch in the top |
|
|
276
|
Wed Nov 22 15:46:50 2023 |
Shane | Update | CDS | DB25 signal connections for FROSTI heaters |
[Shane,
Jon]
Installed new DC smart switch in electronics |
|
|
275
|
Tue Nov 21 22:09:44 2023 |
Aiden | Update | General | Testing Parts | [Aiden, Luis]
Luis and Aiden vented
the chamber today. We closed off the RGA
section and then proceeded to open the the |
8x |
|
274
|
Tue Nov 21 14:47:24 2023 |
Tyler | Update | Lore | 1129 Workbench Assembly Update 1 |
[Tyler, Shane, Mohak, Cynthia, Luke,
Michael, Luis]
Started assembly of the workbench |
|
|
273
|
Mon Nov 20 20:45:16 2023 |
Aiden | Update | VAC | Leak Test |
[Aiden, Luis]
Tested every weld
and flange to find leaks. Only found that
the flange on the turbo pump and reducing |
|
|
272
|
Mon Nov 20 20:37:45 2023 |
Aiden | Update | VAC | Clean and Bake Batch 20 | [Aiden, Luis]
Started to clean and bake the
macor parts for the FROSTI reflector. Per
LIGO documentation cleaned the macor in liquinox |
|
|
271
|
Mon Nov 20 10:10:50 2023 |
Tyler | Configuration | Electronics | RTD Logic/Schematic Diagrams |
Below are a basic diagram of what the
RTD measurement circuit logically looks like
and an example schematic of the actual wiring. |
|
|
270
|
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 |
|
|
269
|
Thu Nov 16 19:32:31 2023 |
Aiden | Update | VAC | VAC HC Levels Update | Took some more RGA data today and overlaid
it with data taken from October 19. I added
a red line that symbolizes where all amu |
|
|
268
|
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 |
|
|
267
|
Wed Nov 15 21:52:33 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update | Took RGA data before running the degas mode.
Made sure to close off the main volume before
running the degas. And left the filament |
|
|
266
|
Tue Nov 14 17:21:40 2023 |
Jon | Update | VAC | RGA best practices | As a follow up ELOG 261,
I have received advice from one of the vacuum
experts at LIGO Hanford on best practices |
|
|
265
|
Mon Nov 13 11:23:54 2023 |
Jon | Update | CDS | CyMAC testing | [Jon, Shane, Luis]
My repair of the internal ribbon
connecting the ADC to the adapter board resolved |
|
|
264
|
Mon Nov 13 11:07:50 2023 |
Tyler | Update | VAC | RTD Analysis |
After initial analysis from last week
on a single RTD, I then extended to looking
at all 8 in series with R_ref (set to 1 kOhm). |
|
|
263
|
Mon Nov 13 06:15:45 2023 |
Peter | Update | VLC Update | VLC Mode Matching | Weekly Updates Attached in pdf |
|
|
262
|
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, |
|
|
261
|
Fri Nov 10 08:32:34 2023 |
Jon | Update | VAC | RGA experiments | I ran a 3-minute
degas cycle of the RGA filament for the first
time yesterday (in this process, the filament |
|
|
260
|
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 |
|
|
259
|
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 |
|
|
258
|
Thu Nov 9 13:48:47 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update | After bake 7 was stopped on Wednesday morning
(11,8,2023), I took RGA data of the chamber
to compare to a later scan that will be done |
|
|
257
|
Wed Nov 8 17:55:49 2023 |
Jon | Update | General | Lab Clean-Up Day 1 | [Jon, Tyler, Shane, Peter, Luis]
Today we completed the first phase
of lab clean-up. Activities included: |
|
|
256
|
Mon Nov 6 11:31:25 2023 |
Peter | Update | VLC Update | VLC Mode Matching | See Update Attached |
|
|
255
|
Mon Nov 6 11:29:24 2023 |
Tyler | Update | Electronics | Preliminary RTD Calculations, RP Software Update |
Preliminary RTD calculations are shown
below, given an input of 10 V and desiring
a few mA of current. It looks like R_ref |
|
|
254
|
Thu Nov 2 17:14:36 2023 |
Shane, Jon | Update | CDS | CyMAC set up permanentized |
CyMAC connections
have been finalized and made permanent. Also
tested voltages, which are all looking good. |
|
|
253
|
Wed Nov 1 20:22:07 2023 |
Aiden | Update | VAC | VAC System Heating Update | Raised the PID controller temperature to 105C
today as at that temperature the lid and
the barrel temperature sensors were reading |
|
|
252
|
Wed Nov 1 18:24:01 2023 |
Shane | Update | CDS | CyMAC Power connections made |
Finished
power connections today for the CyMAC chassis.
Images attached. Had to switch the shrink |
|
|
251
|
Tue Oct 31 19:46:35 2023 |
Aiden | Update | VAC | VAC System Heating Update | Started bake 7 on Monday but found issues
with the heating as the cross in front of
the RGA got way too hot too quickly. This |
|
|
250
|
Mon Oct 30 18:15:13 2023 |
Shane | Update | CDS | CyMAC chassis mounted and progress on power connections | All CyMAC chassis mounted in electronics rack
today, and shelf for monitor also mounted.
Images attached. Assembled grounding cables |
|
|
249
|
Mon Oct 30 11:03:56 2023 |
Tyler | Update | Scripts/Programs | |
FLIR: After some adjustments, the plot
generated from the FLIR measurements look
much more symmetric (see attachment). There |
|
|
248
|
Mon Oct 30 08:42:22 2023 |
Jon | Update | VAC | Vacuum Leak Test | By 5:30 pm Friday, the pressure had reached
8.6e-8 torr and was continuing to fall. So
it seems we are OK to proceed with permanentizing |
|
|
247
|
Fri Oct 27 15:28:30 2023 |
Shane | Update | CDS | AA and AI chassis for CyMAC powered on and functional | CyMAC updates: Switched out the faulty power
regulator boards in the Anti-Aliasing and
Anti-Imaging chassis. Both chassis are now |
|
|
246
|
Fri Oct 27 15:16:31 2023 |
Aiden | Update | VAC | Vacuum Leak Test | Leak tested the worst flanges on the chamber
after moving it and after bake 6. The 6 inch
flange connected to the 8 inch reducing nipple |
|
|
245
|
Thu Oct 26 13:00:45 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update | Bake 6 was turned off on Monday. Tooke RGA
data today and have posted the data below.
The pressure of the chamber after taking |
|
|
244
|
Mon Oct 23 18:02:23 2023 |
Shane, Jon | Update | CDS | Timing chassis assembly complete | Concluded assembly of timing chassis for CyMAC
today; see attachment 1 for interior set
up of chassis. Installed front and rear panels, |
|
|
243
|
Mon Oct 23 11:28:05 2023 |
Tyler | Update | Cameras | FLIR Camera Code Updates | The past week I've been spending time going
through the FLIR code on gitlab. Initially,
it had appeared that our measurements with |
|
|
242
|
Mon Oct 23 07:28:57 2023 |
Peter | Update | VLC Update | VLC Mode Matching | I have attached a pdf with slides of my latest
updates. |
|
|
241
|
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 |
|
|
240
|
Thu Oct 19 11:41:04 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update | [Aiden, Tyler, Mohak]
Took some RGA
data when we came into the room. The pressure
of the chamber was 8.63e-8 Torr before turning |
6x |
|
239
|
Thu Oct 12 12:11:10 2023 |
Aiden | Update | VAC | Vacuum chamber Helium leak test | [Aiden, Tyler, Peter, Jon]
Continued
tightening bolts on the turbo pump and 6"-8"
reducer to reduce the leak. The final leak |
|