| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
238
|
Wed Oct 11 20:47:11 2023 |
Jon | Update | VAC | Vacuum upgrade begins | [Jon, Tyler, Aiden, Peter]
Upgrade of the UHV system to a larger
turbo pump began today. After obtaining a |
|
|
237
|
Mon Oct 9 21:41:24 2023 |
Aiden | Update | Clean & Bake | Clean and Bake Batch 19 | Bagged and tagged the parts from batch 18.
Started the Copper batch that includes all
the gaskets needed to start the vacuum chamber |
|
|
236
|
Mon Oct 9 16:59:21 2023 |
Shane, Jon | Update | CDS | timing chassis power cable and AI chassis testing for CyMAC |
[Shane, Jon]
Today's
CyMAC work:
Finished assembling
external power supply cable for the timing |
|
|
235
|
Mon Oct 9 11:29:37 2023 |
Tyler | Update | Electronics | PSD/CSD Plot Updates | Continuing from Sophia's SURF Project this
summer: Plotting the Power-Spectral Densities
(PSDs) and Cross-Spectral Densities of two |
|
|
234
|
Mon Oct 9 11:06:17 2023 |
Peter | Update | VLC Update | VLC Launch Chain | Implemented the new stage for the EOM. Took
power data at different positions in the
launch chain. Beam waist: 0.066mm (beam waist |
|
|
233
|
Sat Oct 7 17:10:27 2023 |
Aiden | Update | Clean & Bake | Clean and Bake Batch 18 | Bagged and tagged the parts from Batch 17
and placed them in the clean room on the
optic table. Also started an aluminum batch |
|
|
232
|
Tue Oct 3 15:07:48 2023 |
Aiden | Update | Clean & Bake | Clean and Bake Batch 17 | Cleaned and baked all the stainless steel
parts in Batch 17. Check data base for more
details on this. |
|
|
231
|
Fri Sep 29 17:27:30 2023 |
Shane, Jon | Update | CDS | Timing chassis assembly progress (CyMAC) | Worked on timing chassis assembly today for
the CyMAC, settled on layout (see attachment
1). Frequency synthesizer and frequency divider |
|
|
230
|
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 |
|
|
228
|
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 |
|
|
227
|
Thu Sep 28 15:17:13 2023 |
Aiden | Update | Clean & Bake | Clean and Bake Batch 16 | Bagged and Tagged the parts from batch 15
and started baking batch 16 which includes
the 6" to 8" reducer. |
|
|
226
|
Fri Sep 15 17:33:35 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update | Took some more RGA data and see that the chamber
has gotten much cleaner since monday. Next
step would be another bake with some focus |
|
|
225
|
Thu Sep 14 17:05:38 2023 |
Shane, Jon | Update | CDS | Timing chassis setup and testing | Tested the setup today for the timing chassis
(intended to provide the timing reference
for the CyMAC). Was able to read the correct |
|
|
224
|
Tue Sep 12 15:31:31 2023 |
Aiden | Update | Clean & Bake | Clean and Bake Batch 15 | 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 |
|
|
223
|
Mon Sep 11 16:02:42 2023 |
Aiden | Update | VAC | VAC System Heating Update | The chamber has cooled down from bake 5 and
I took the first set of data. The pressure
measured during the RGA measurements reached |
|
|
222
|
Fri Sep 8 16:10:43 2023 |
Aiden | Update | VAC | VAC System Heating Update | Turned off the PID controllers to let the
chamber cool down. Final temperatures for
the RGA cross and Turbo pump cross were 113 |
|
|
221
|
Thu Sep 7 19:24:25 2023 |
Peter | Update | VLC Update | VLC Launch Chain | The launch optics up to the Faraday Isolator
have been added to the breadboard. In the
first image, the optics are (from L to R) |
|