| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
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 |
|
|
295
|
Mon Dec 18 15:51:49 2023 |
Aiden | Update | VAC | VAC System Heating Update | After letting the chamber cool down I put
the electronics back on and turned the RGA
element back on. No data has been taken yet |
|
|
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 |
|
|
301
|
Tue Jan 9 16:35:09 2024 |
Aiden | Update | VAC | VAC System Leak and Heating | [Luis, Luke, Aiden]
Leak tested each
flange and weld and only found two flanges
to have noticeable leaks with the electron |
|
|
306
|
Tue Jan 16 16:11:41 2024 |
Aiden | Update | VAC | | [Aiden,Luis]
Below is the data for the
most recent bake. I believe the chamber is
cleaner than it is actually showing as the |
|
|
308
|
Thu Jan 18 15:13:37 2024 |
Aiden | Update | VAC | VAC Heating System Update | [Aiden]
Took more data today and the
chamber and elements are showing an even
lower HC level than we have gotten before. |
|
|
314
|
Fri Feb 2 19:08:20 2024 |
Aiden | Update | VAC | 1st Hot Element RGA Scan | Here are the measurements for the RGA scan
of the elements while on at around 160C.
The pressure of the chamber during the test |
|
|
316
|
Mon Feb 5 14:17:52 2024 |
Aiden | Update | VAC | Heater Element RGA Scan | Here are the new RGA scans for the powered
Heater elements. The pressure at the time
of taking data was 2.88 e-8 torr. The HC |
|
|
319
|
Thu Feb 8 17:37:48 2024 |
Aiden | Update | VAC | Heater Element RGA Scan | Took more RGA data now that the heaters are
powered by 18V. The pressure of the system
during the data taking was 3.8 e-8 torr. |
|
|
320
|
Mon Feb 12 17:35:47 2024 |
Aiden | Update | VAC | Heater Element RGA Scan | Took more RGA data before and after increasing
the heater elements to 300 degC and before
heating them up.
|
|
|
325
|
Tue Feb 13 12:34:04 2024 |
Aiden | Update | VAC | VAC Heating System Update | Here is an overlay with for all the heating
steps done with the heater elements. |
|
|
327
|
Fri Feb 16 18:37:28 2024 |
Jon | Update | VAC | Bake ended 6:23 pm | I ended the bake of the UHV system (that
began on Monday) at 6:23 pm today by switching
OFF both PID controllers. The heaters elements |
|
|
328
|
Mon Feb 19 14:17:50 2024 |
Aiden | Update | VAC | Heater Element RGA Scan | Three days after the completion of Bake 11,
the Heater elements RGA scan looks much cleaner.
The HC level is back down to 33 e-10 torrl/s |
|
|
335
|
Thu Feb 22 21:48:16 2024 |
Jon | Update | VAC | Vacuum vent for RGA testing of reflector | [Jon, Tyler, Luke, Aiden]
Summary
Following
Wednesday's cleanroom cleaning [333],
we proceeded to vent the vacuum chamber, |
|
|
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 |
|
|
367
|
Mon May 13 14:48:27 2024 |
Aiden | Update | VAC | New Vacuum Chamber Design | I created a new model for the vacuum chamber
based on the ideas from last week's meeting.
It
should be noted that we can not have the |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
400
|
Wed Jul 10 17:31:07 2024 |
Luke | Update | VAC | RGA line disassembly and upgrade | [ Luke, Cynthia, Michael, Xuesi, Anthony
]
Started work around 12:45 |
|
|
401
|
Thu Jul 11 15:53:39 2024 |
Luke | Update | VAC | RGA line upgrade | [ Luke, Jon ]
Started work at 11:00
As mentioned in my previous post |
|
|
405
|
Mon Jul 15 13:30:49 2024 |
Luke | Update | VAC | Problem with 2.75" to 1.33" zero length reducer | Last Friday while checking the depth of the
ZLR I got one of the screws stuck. Today
I tried a couple things to get it out. First |
|
|
411
|
Mon Jul 22 18:19:34 2024 |
Luke | Update | VAC | Zero length reducer stuck bolts | Today, I borrowed a bolt extractor drill
bit from the machine shop to remove some
stuck bolts from the zlr. Before starting, |
|
|
425
|
Fri Aug 16 12:51:46 2024 |
Luis Martin | Update | VAC | Update on vacuum chamber status | [Luis, Luke, Tyler]
Vacuum chamber parts were finally
received and assembled. After whipping down |
|
|
427
|
Fri Aug 23 16:08:32 2024 |
Luke | Update | VAC | RGA line leak testing | [Luke, Luis, Jon, Tyler]
On the 22nd Dr. Richardson showed
Luis, Tyler and I how to preform a leak test |
|
|
429
|
Tue Aug 27 15:01:26 2024 |
Luke | Update | VAC | RGA line leak testing | [Luke, Tyler]
On the 27th Tyler and I ran the RGA
leak test again with the electron multiplier |
|
|
431
|
Thu Aug 29 16:39:34 2024 |
Luke | Update | VAC | Photos of heater tape | |
6x |
|
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 |
|
|
433
|
Tue Sep 3 15:52:56 2024 |
Luke | Update | VAC | Heater tape initilization | [Luke, Tyler, Jon]
On the 3rd we set up the pid controllers
for the heater tapes and after putting on |
|
|
435
|
Fri Sep 6 14:34:52 2024 |
Luke | Update | VAC | Heating tape work | On the 5th I had tried to start baking
the vacuum chamber however certain parts
of the chamber were getting too hot and causing |
|
|
438
|
Mon Sep 9 21:02:37 2024 |
Luke | Update | VAC | Steadystate temperature of flanges | I measured the temperature of the flanges
and reconnected the RGA turning on its filament.
I then turned off the PID controllers. |
|
|
440
|
Mon Sep 16 13:51:23 2024 |
Luis Martin | Update | VAC | RGA Scans |
|
|
|
448
|
Wed Sep 25 09:06:09 2024 |
Luis Martin | Update | VAC | RGA Scans |
|
|
|
459
|
Wed Oct 16 13:58:59 2024 |
Luis Martin | Update | VAC | RGA Scan | The following figure displays data acquired
on 10/09, and it shows that we are no longer
below the cleanliness standard. Also, the |
|
|
462
|
Wed Oct 23 11:48:06 2024 |
Luis Martin | Update | VAC | Leak Test Results | [Luke, Luis, Mary, Ma]
On 10/22/24 Luke, Ma, Mary and myself
ran a leak test, the results are displayed |
|
|
463
|
Wed Oct 23 12:08:36 2024 |
Luis Martin | Update | VAC | RGA Scan | [Luke, Luis, Mary, Ma]
On 10/22/24 Luke, Ma, Mary and myself
ran a RGA scan, the results are displayed |
|
|
468
|
Tue Nov 5 11:08:40 2024 |
Luis Martin | Update | VAC | ISO Test |
[Luis, Luke, Ma Michael]
The isolation test
was conducted on the vacuum system. Every |
|
|
474
|
Tue Nov 19 17:10:34 2024 |
Luke | Update | VAC | Leak check | Chamber temperature: 23C
Chamber Initial Pressure: ~1.8e-8
main, ~3.5e-8 rga |
|
|
476
|
Wed Nov 20 12:31:24 2024 |
Luis | Update | VAC | Leak test RGA Scan after vacuum repairs | [Luke, Luis]
After the gasket replacement performed
on Monday (11/18/24) we let the vacuum pump |
|
|
11
|
Mon Oct 3 17:21:39 2022 |
Cao | Update | TCS | Inspection of macor parts | The macor parts arrived and inspected today.
These include:
Macor spacer
(drawing: LIGO_Redesign_Macor_Spacer_Drawing_v4.pdf |
7x |
|
173
|
Thu Jul 27 10:18:43 2023 |
Celeste | Update | TCS | Graphical Updates to HOM RH Modification | Attached are updated graphs of the irradiance
distribution from the 1/8th ring heater units
(extruded and reduced in length). |
|
|
180
|
Fri Jul 28 17:45:45 2023 |
Celeste | Update | TCS | Graphical Updates to HOM RH Modification, Friday 7/28 | Updated 1/8th Heater simulation modification
graphs. Slides 7, 10, 16-19 are new additions. |
|
|
187
|
Tue Aug 1 16:22:35 2023 |
Celeste | Update | TCS | Graphical Updates to HOM RH Modification, Tuesday 8/1 | Slides 20-33 are newly added (data/graphs
from parameter sweep feature-1/8th heater
unit length varied from 10% of original to |
|
|
200
|
Thu Aug 10 14:13:38 2023 |
Celeste | Update | TCS | 8/10/23, Simulation Graphical Progress | |
|
|
204
|
Fri Aug 11 10:57:20 2023 |
Celeste | Update | TCS | 8/11/23 Simulation Progress | |
|
|
209
|
Tue Aug 15 16:10:06 2023 |
Celeste | Update | TCS | 8/15/2023 Simulation Progress | |
|
|
291
|
Mon Dec 11 16:20:17 2023 |
Jon | Summary | TCS | FROSTI Assembly Procedure | Below is the procedure we will follow to
assemble the FROSTI prototype.
Install SS guide rods and |
|
|
341
|
Mon Feb 26 21:23:27 2024 |
Jon | Update | TCS | FROSTI Assembly - Day 1 | [Jon, Tyler, Luis, Luke, Mohak, Cynthia, Michael,
Aiden]
FROSTI assembly began today. After
a final set of RGA scans were taken, the |
7x |