| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
Draft
|
Fri Apr 29 15:00:47 2022 |
Stephen | Progress | HWS_PAD | | Actions taken this week:
Placed PO for
Next steps (for next week): |
|
|
267
|
Fri Apr 15 16:15:56 2022 |
Stephen | Progress | HWS_PAD | XY Stage build for TM-HPAD in Downs 318, device testing and joining of axes | [Stephen, Jordan, Camille]
We continued building the Zaber
XY stage, following instructions in vendor |
|
|
266
|
Thu Apr 14 14:12:23 2022 |
Stephen | Progress | HWS_PAD | XY Stage build for TM-HPAD in Downs 318 | [Stephen, Jordan, Camille]
We started building the Zaber XY
stage, following instructions in vendor |
|
|
Draft
|
Tue Feb 8 18:52:56 2022 |
Stephen | Progress | RTS for COC | Anneal of SN0818 and SN0654 at 500°C for 100 hours | [WIP Placeholder]
SN0818 and SN0654 (25 mm HR
witness samples - SN0818 is ETM, SN0654 is |
|
|
264
|
Tue Feb 1 10:05:46 2022 |
Stephen | Progress | RTS for COC | Anneal of SN1009 at 500°C for 56 hours | SN1009 (80 mm witness sample) was annealed
between 01 and 04 February 2022 - used the
large furnace in Downs 221, atmosphere was |
|
|
263
|
Fri Jan 28 18:01:33 2022 |
Stephen | Progress | RTS for COC | Anneal of SN1009 at 500°C for 10 hours | SN1009 (80 mm witness sample) was annealed
between 28 and 31January 2022 - used the
large furnace in Downs 221, atmosphere was |
|
|
262
|
Tue Jan 25 18:25:22 2022 |
Stephen | Progress | RTS for COC | Anneal of SN1009 at 400°C for 10 hours | SN1009 (80 mm witness sample) was annealed
between 25 and 26 January 2022 - used the
large furnace in Downs 221, atmosphere was |
|
|
261
|
Wed Jan 19 18:31:18 2022 |
Stephen | Progress | RTS for COC | Anneal of SN1009 at 300°C for 10 hours | SN1009 (80 mm witness sample) was annealed
between 19 and 20 January 2022 - used the
large furnace in Downs 221, atmosphere was |
|
|
260
|
Tue Oct 12 12:59:23 2021 |
Stephen | How To | General | Lista tool chest jammed, opened | [Stephen, Dean]
Aaron's past experience at
Cryo_Lab/2563 |
|
|
259
|
Fri Oct 1 20:44:08 2021 |
Stephen | Progress | TMDS | Fabrication and drawing of Connector Guard | [Stephen]
Ref. D1400331-v8
Item 48 - new high voltage feedthrough D2000585 |
|
|
258
|
Fri Oct 1 19:58:57 2021 |
Stephen | Progress | COC Absorbers | Coupons cut for Bead Blasting (quote pending) | [Stephen]
WIP placeholder
Ref. T2100351 instructions, plus |
|
|
257
|
Fri Oct 1 19:14:49 2021 |
Stephen | Progress | RTS for COC | Carbon tape absorber refererences on 1" optic | [Stephen]
WIP placeholder |
|
|
256
|
Fri Sep 24 13:40:22 2021 |
Stephen | Progress | RTS for COC | Modified 75mm RTS mount ring to host 80mm witness sample | Simple machining operation setup and executed
in Downs 228. Taking notes for future replication,
and to drop the Photo |
|
|
255
|
Thu Sep 16 21:23:08 2021 |
Stephen | Progress | RTS for COC | SEM Log for LMA Coating Chamber panel coupon | Imaging effort of coupons collected from
LMA coating chamber panels.
uncoated_A_01 = area where coating |
|
|
254
|
Thu Sep 9 14:56:26 2021 |
Stephen | Progress | RTS for COC | Anneal of SN1535 at 300°C for 10 hours |
SN1535 was annealed between 07
and 08 September 2021 - used the large furnace |
|
|
253
|
Fri Sep 3 14:25:00 2021 |
Stephen | Progress | RTS for COC | Anneal of SN0932 at 300°C for 10 hours | SN0932 was annealed between 02 and 03 September
2021 - used the large furnace in Downs 221,
atmosphere was air, used glass petri dishes |
|
|
252
|
Tue Jul 27 14:32:30 2021 |
Rich Abbott | Electronics | Helicoflex Enclosure | 105kHz FC Detector | Luis, Chub, Calum, Jordan, Dean, Rich
Today we filled neon into the new
enclosure (Dxxx) that's destined for |
|
|
251
|
Wed May 19 09:24:32 2021 |
Stephen | Progress | RTS for COC | Keyence Microscope integrated into RTS Setup | StephenA, 20 April 2021
Finished integrating the RTS Microscope
Mount Assembly for the Keyence VH-Z250T lens |
6x |
|
250
|
Thu Apr 8 17:01:52 2021 |
Stephen | How To | Modal Testing | Troubleshooting low vibrometer signal / absence of ring down | Regina's problem statement:
I attached examples of two
measurements I got and wanted to know if |
|
|
249
|
Tue Nov 24 12:31:05 2020 |
Marie K. | Summary | BS BRDs | LHO BRDs monitoring | LHO BRDs:
I didn't observe frequency
drifts during the month of assembly and monitoring |
|
|
248
|
Tue Nov 24 11:09:18 2020 |
Marie K. | Summary | BS BRDs | LHO BRDs ready for C&B | This morning I handed off the parts for
the 5 LHO BRDs to Bob Cottingham at LLO for
Clean&Bake (https://ics.ligo-la.caltech.edu/JIRA/browse/clean-10214) |
|
|
247
|
Thu Nov 19 15:55:45 2020 |
Stephen | Progress | Vacuum | Nuts and Rod for A+ FC Tube Support Stand | Stephen A, 2020 Nov 19
Ordered and received PO 75-S492380
including threaded rod and nut with 2"-12 |
7x |
|
246
|
Fri Oct 23 12:25:13 2020 |
Marie K. | Progress | BS BRDs | BS BRDs for LLO are assembled and tuned | The 5 BS BRDs for installation at LLO are
now assembled and tuned in the LLO Optics
Lab. The target frequencies are 16.846 Hz |
|
|
245
|
Thu Oct 22 14:45:22 2020 |
Aidan | Computing | HWS_PAD | HWS point absorber diagnostic - frame grabber not responding. | The EDTpdv framegrabber is unaccessible
following a security update to the HWS computer.
The lspci command shows the EDT frame grabber |
|
|
244
|
Thu Oct 22 14:33:50 2020 |
Marie K. | Progress | BS BRDs | BS BRDs for LHO are assembled and tuned | The 5 BS BRDs for installation at LHO are
now assembled and tuned in the LLO Optics
Lab. The target frequencies are 17.79 Hz |
|
|
243
|
Mon Sep 28 09:31:30 2020 |
Calum Torrie | Mechanics | TMDS | TMDS FRS TICKET 15312 | https://services.ligo-la.caltech.edu/FRS/show_bug.cgi?id=15312 |
|
|
242
|
Tue Jun 23 16:18:44 2020 |
Isabella Dula | Progress | BS BRDs | Finite Element Analysis on BS BRD blades V5, V6, and simplified rectangular blade | Basis structural analysis was completed
on models of the V5, V6, and a simple rectangular
version of the BS BRD blades. The modesl |
|
|
241
|
Wed Mar 4 11:32:43 2020 |
Marie K. | Progress | BS BRDs | BRD9v5 & BRD10v5 on BS | Right after tuning the BRDv5 9 and 10 (see
elog
238), I installed them on the BS and |
|
|
240
|
Fri Feb 28 11:22:06 2020 |
Marie K. | Electronics | BS BRDs | Scheme of the electronics for BS measurements | For reference, please find the description
of the current installation in the drawing
attached. |
|
|
239
|
Thu Feb 27 12:16:22 2020 |
Marie K. | Progress | BS BRDs | BRD5_v5 & BRD6_v5 off the BS | Today I removed the BRD5_v5 and BRD6_v5
from the BS suspension, after their 6 months
stay. |
|
|
238
|
Thu Feb 27 11:50:02 2020 |
Marie K. | Progress | BS BRDs | BRD9_V5 and BRD10_v5 installed today on BS | BRD9_v5 and BRD10_v5 were remeasured and
tuned yesterday (see elog
235). |
|
|
237
|
Wed Feb 26 14:40:52 2020 |
Marie K. | Summary | BS BRDs | BS Roll mode : BRD5_v5 & BRD6_v5 | ====== Roll mode
Here is a summary of the BS roll
mode survey with BRD5_v5 and BRD6_v6 attached |
|
|
236
|
Wed Feb 26 11:24:35 2020 |
Marie K. | Summary | BS BRDs | BS Bounce mode : BRD5_v5 & BRD6_v5 | ====== Bounce Mode
Here is a summary of the BS bounce
mode survey with BRD5_v5 and BRD6_v6 attached |
|
|
235
|
Wed Feb 26 10:46:53 2020 |
Isabella Dula | Progress | BS BRDs | Tuning BRD9V5 and BRD10V5 | Constructed and tuned the BRD9 and BRD10
V5. The masses on each BRD were:
|
|
|
234
|
Wed Feb 19 13:28:18 2020 |
Stephen | Items to Buy | General | GigE Camera - IR Sensitivity improvements available | Contributors
Stephen, Noah
Summary |
|
|
233
|
Wed Feb 19 10:58:46 2020 |
Dula | Progress | BS BRDs | Tuning BRD9V5 | Data is in attached excel file. |
|
|
232
|
Mon Jan 27 14:31:28 2020 |
Maria G | Progress | BS BRDs | BRD 7 and BRD 8 | From January 14 to the 21, Bounce BRD 7's
frequency drifted -2.68% which differes from
the drift logged on January 14 which was |
|
|
231
|
Thu Jan 16 16:05:14 2020 |
Marie K. | Progress | BS BRDs | Expected Q vs mistuning | To determine the best achievable Q as a
function of the mistuning, we studied a simple
model with 2 resonant masses (see elog |
|
|
230
|
Tue Jan 14 14:59:47 2020 |
Maria G | Progress | BS BRDs | Tuning BRD 7 | Overnight the Bounce mode of BRD7_v5 drifted
0.16% which is surprising if we compare it
to the drift from the previous month which |
|
|
229
|
Tue Jan 14 14:47:33 2020 |
Maria G | Progress | BS BRDs | BRD 7 and 8 Drift Witnesses | Today we added the masses for the Roll
of BRD 8:
4.043+2.351+screw= 7.293g |
|
|
228
|
Mon Jan 13 14:36:32 2020 |
Maria G | Progress | BS BRDs | BRD 7 and 8 Drift Witnesses | We built 2 BRDs with version 5 of the blade
before the break to be used as witnesses
for the drift over the next weeks. BRD 8 |
|
|
227
|
Fri Jan 10 11:53:22 2020 |
Craig Worley | Progress | Modal Testing | Relayed measurements of VMD | CIT Modal lab is currently experimenting
using a mirror relay to measure the VMD at
a 45 degree angle to the mounting plate. |
|
|
226
|
Fri Dec 13 13:06:36 2019 |
Jordan | Progress | Clean and Bake | Small ABO Controller Upgrade | Below are the temperature v. time plots
from the new Platinum series contoller/software.
The profile ran was a 2.5 hour ramp to 94°C, |
|
|
225
|
Fri Dec 13 10:57:23 2019 |
Marie K. | Progress | BS BRDs | Survey of BRD_v5 drifts on BS (Fall 2019) | Attached are the measurements of the bounce
roll transfer function of the dummy BS with
BRD5 and BRD6 (v5 blades) fastened to the |
|
|
224
|
Thu Dec 12 11:16:03 2019 |
Stephen | Progress | General | SR3 ROC Actuator photos | StephenA, various others :)
Sharing a link to photos of SR3
ROC Actuator efforts in various labs at CIT |
|
|
221
|
Thu Dec 5 11:19:11 2019 |
Isabella Dula | Progress | BS BRDs | BRD4 V4 Measurements |
See attached file for measurements. |
|
|
220
|
Thu Nov 21 10:53:59 2019 |
Stephen | Lab Infrastructure | Clean and Bake | Electrical Check of new Epoxy Curing "Wait Test" Oven | RichA, StephenA, LizN 12 November 2019
(catching up after-the-fact)
A new simple oven has been procured |
|
|
219
|
Tue Nov 19 09:36:56 2019 |
Marie K. | Progress | BS BRDs | 3 masses model check | Following up elog 217, I want to make sure
that the 2 BRD model is correct. Here is
a comparison of the model with the 2 identical |
|
|
218
|
Fri Nov 15 10:45:18 2019 |
Craig Worley | Progress | | Data Normalization Script and VMD Testing Document @ CIT | Updated T1900341 Matlab code with additional
comments to allow for more ease in changing
the code for individual needs. Also updated |
|
|
217
|
Fri Nov 8 13:47:22 2019 |
Marie K. | General | BS BRDs | Model with 2 BRDs | We want to compare the model transfer function
with the measurements on BS.
We built a model with two BRDs |
|