| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
70
|
Wed Apr 12 16:13:19 2023 |
Cao | Physics | VAC | Vacuum prep and installation | Aiden, Pamella, Peter, Shane, Cao
Today
we started vacuum chamber assembly work
10:16 am: Particle count measurement of clean |
|
|
378
|
Wed Jun 19 18:45:14 2024 |
Luke | Update | | Vacuum chamber reassembly | [Luke, Aiden, Mohak , Tyler]
On Tuesday
we had the silver screws for the spherical
cube shortened by a quarter of an inch so |
|
|
432
|
Sun Sep 1 16:17:40 2024 |
Luke | Update | VAC | Vacuum chamber leak checking and re-applying heating tape | [Luke, Luis, Cinthia, Michal, Tyler]
On the 26th Cinthia, Michal, and
I took off the insolation on the vacuum chamber |
|
|
384
|
Tue Jun 25 17:19:42 2024 |
Luke | Update | VAC | Vacuum chamber leak checking | Currently our main leak is in the RGA line.
We found this by closing the gate valve from
the main volume to see if which side was |
|
|
386
|
Wed Jun 26 16:39:34 2024 |
Luke | Update | VAC | Vacuum chamber leak checking | On Tuesday I had isolated the main volume
and let it pump down over-night. Today, Wednesday,
I checked it and it had only gone down by |
|
|
35
|
Tue Feb 28 13:53:17 2023 |
Pamella | Update | General | Vacuum chamber cleaning | Pamella, Dr. Richardson and Dr.Cao finished
checking and cleaning the interior of the
chamber, chamber lid, and exterior of the |
|
|
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, |
|
|
97
|
Fri May 12 20:28:34 2023 |
Aiden, Cao | Physics | VAC | Vacuum chamber Helium leak test | [Aiden, Cao]
1. Helium leak test
2:00 pm: Uninstall regulator from nitrogen |
|
|
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 |
|
|
371
|
Fri May 31 19:37:47 2024 |
Luke | Update | | Vacuum chamber Disassembly | [Luke, Aiden, Jon, Michel, Tyler]
Work
done:
On Tuesday (5/28) we removed the RGA
line with minimal difficulty. On Wednesday |
|
|
390
|
Fri Jun 28 18:15:16 2024 |
Luke | Update | VAC | Vacuum chamber | We will be configuring the RGA line to
remove the spherical cube from the system.
Currently our plan for the new design is |
|
|
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
|
|
|
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 |
|
|
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 |
|
|
18
|
Fri Jan 27 18:44:31 2023 |
Julian | Update | General | Vacuum Chanmber Cleaning | I used the IPA wipes to wipe down the inside
of the chamber the best I could. I cleaned
the main chamber but not any of the connecting |
|
|
372
|
Mon Jun 3 09:24:48 2024 |
Aiden | Update | VAC | Vacuum Chamber Rendering | Here is a new render of the vacuum chamber
that includes the 2.75 tee to place the Argon
leak right next to the RGA. The conical reducer |
|
|
292
|
Fri Dec 15 14:03:02 2023 |
Aiden | HowTo | VAC | Vacuum Chamber Opening | [Aiden]
1. Turn off the RGA filament
and disconnect it.
2. Record the pressure
and then close the angle valve and gate valve |
|
|
348
|
Fri Mar 15 16:58:55 2024 |
Aiden | Update | VAC | Vacuum Chamber Frosti Testing | [Luke, Luis, Aiden]
On Thursday, March
14 - Took preliminary RGA scans of the empty
chamber to compare later on. Vented the chamber |
|
|
27
|
Sat Feb 11 00:17:27 2023 |
Julian | Update | General | Vacuum Chamber Cleaning | Today I finished wiping down the rest of the
vacuum chamber, specifically focusing on
the connecting ports and outside surface |
|
|
33
|
Thu Feb 23 21:12:33 2023 |
Julian | Update | General | Vacuum Chamber Cleaning | Today I was able to come in and wipe down
both sides of the vacuum chamber lid using
the regular alcohol wipes and also wipes |
|
|
34
|
Mon Feb 27 17:09:04 2023 |
Pamella | Update | General | Vacuum Chamber Cleaning | Pamella and Julian finished cleaning the interior
of the chamber, chamber lid, and the table.
We found some black residue on the side of |
|
|
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 |
|
|
148
|
Thu Jul 6 16:16:03 2023 |
Aiden | Summary | VAC | Vacuum Chamber Baking Update |
Pressure Measured Before Removing Gauge
2.31 E-7 Torr.
Went in and turned
on the heating tape in increments of 30 degC |
|
|
168
|
Thu Jul 20 18:03:19 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update |
Took another set of RGA data after the
second bake has cooled down to 27 degC.
Just
by visual comparison to the other graphs, |
|
|
179
|
Fri Jul 28 13:46:17 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update |
Took some more data to look at the HC
count. Initial data was from leaving the
Argon leak closed and then left it open for |
|
|
184
|
Tue Aug 1 12:10:03 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update |
Dr. Richardson and I took off the insulation
on the lid again to add more insulation in-between
the heater tape folds in addition to what |
|
|
214
|
Mon Aug 21 17:13:25 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update |
Came in to take RGA data and found the
turbo pump drawing .38 Amps. This was much
higher than what it was on Friday. I investigated |
|
|
215
|
Mon Aug 28 14:43:50 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update | The PID controllers were turned off on Friday
and the chamber was left to cool over the
weekend. Just took data and it looks like |
|
|
216
|
Tue Aug 29 19:09:21 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update | Here are some more plots with the RGA data
take August 29. It seems that more pumping
time has led to the HC levels being dramatically |
|
|
218
|
Thu Aug 31 12:56:29 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update | Took some more RGA data to see if the HC levels
have further declined since bake 4 and it
seems that it has started to plateau with |
|
|
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 |
|
|
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 |
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
296
|
Tue Dec 19 15:45:05 2023 |
Aiden | Update | VAC | Vacuum Chamber Baking Update | Took RGA data for the macor parts inside of
the chamber. With the Ar open the HC levels
read 30 torrl/s which is around where it |
|
|
340
|
Mon Feb 26 15:15:39 2024 |
Aiden | Update | General | Vacuum Chamber Baking Update | Started Bake 12 on Wednesday Feb. 21 and turned
the bake off on Saturday Feb. 24. This was
a normal low temp bake with the PID controllers |
|
|
293
|
Sun Dec 17 19:43:18 2023 |
Aiden | Update | VAC | Vac Heating Update | [Aiden]
I measured the temperature of
the flanges where some of the electronics
will go and I found that the RGA flange was |
|
|
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. |
|
|
256
|
Mon Nov 6 11:31:25 2023 |
Peter | Update | VLC Update | VLC Mode Matching | See Update Attached |
|
|
263
|
Mon Nov 13 06:15:45 2023 |
Peter | Update | VLC Update | VLC Mode Matching | Weekly Updates Attached in pdf |
|
|
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) |
|
|
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 |
|
|
304
|
Tue Jan 16 10:01:21 2024 |
Peter | Update | VLC Update | VLC Faraday Isolator and Mode Matching | Attached is a PDF of my weekly updates. |
|
|
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 |
|
|
360
|
Mon Apr 15 11:51:03 2024 |
Peter | Update | VLC Update | VLC | An update on the VLC project is attached below: |
|
|
368
|
Mon May 13 14:53:29 2024 |
Peter | Update | VLC Update | VLC | VLC Update WEEK 7 attached below |
|