| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
381
|
Wed Jul 26 21:22:50 2017 |
Zach | Electronics | Modeling | Parametric Sweep Results | 2017-07-26
I resolved
the major bugs in the parametric sweep scripts
and ran low resolution sweeps of the gap |
|
|
380
|
Wed Jul 26 16:22:22 2017 |
Gabriele | General | Measurements | S1600528 S1600531 | 2017-07-26
4:14pm in
chamber
S1600528 in CR1
S1600531
in CR2
4:16pm |
|
|
379
|
Wed Jul 26 09:27:40 2017 |
Zach | Electronics | Modeling | Sweeping the space between ESD and sample | 2017-07-26
I ran a
sweep of the gap between the ESD and the
sample, first from .5 mm to 1 mm. That sweep |
|
|
378
|
Tue Jul 25 13:38:30 2017 |
Zach | Electronics | Modeling | Parametric Sweep of ESD gap | 2017-07-25
I completed
a short sweep of the gap between the drive
and the sample, between .5 and 1 mm in .1 |
|
|
377
|
Tue Jul 25 11:22:37 2017 |
Gabriele | General | Measurements | S1600548 S1600550 S1600538 | 2017-07-25
11:12am
in chamber (non standard order is not a typo!!)
S1600548
in CR1
S1600550 in CR2
S1600538 |
|
|
376
|
Mon Jul 24 16:06:11 2017 |
Gabriele | General | Measurements | S1600530 S1600532 S1600537 S1600539 | 2017-07-24
3:55pm installed
in chamber
S1600530 in CR1
S1600532
in CR2
S1600537 in CR3
S1600539 |
|
|
375
|
Mon Jul 24 09:13:45 2017 |
Zach | Electronics | Modeling | Parametric Sweep | 2017-07-24
I wrote
a MATLAB script that is capable of sweeping
parameters, the code is attached. The next |
|
|
374
|
Sat Jul 22 13:05:46 2017 |
Gabriele | General | Measurements | S1600533 S1600535 S1600536 S1600547 | 2017-07-22
12:55pm
in chamber
S1600533 in CR1
S1600535
in CR2
S1600536 in CR3
S1600547 |
|
|
373
|
Fri Jul 21 14:55:02 2017 |
Gabriele | General | Measurements | Shear and bulk losses in annealed tantala | I repeated the analysis for bulk and shear
losses described in an early
elog entry, with the same coating, but |
8x |
|
372
|
Fri Jul 21 08:42:09 2017 |
Gabriele | General | Measurements | S1600525 | 2017-07-21
8:30am,
in chamber (CR4)
8:32am, roughing
pump on
8:41am, turbo pump on
Excitations
Quiet |
|
|
371
|
Thu Jul 20 11:37:01 2017 |
Zach | Electronics | Modeling | Matlab Script | 2017-07-20
I believe
my MATLAB script successfully calculates
the force distribution into each of the modes |
|
|
370
|
Wed Jul 19 21:19:14 2017 |
Gabriele | General | Measurements | Shear and bulk losses in tantala | To quantify which of the fit below is the
most significant, I did a Bayesian analysis
(thanks Rory for the help!). |
|
|
369
|
Tue Jul 18 09:13:08 2017 |
Gabriele | General | Measurements | Shear and bulk losses in tantala | S1600525 has been coated in Fort Collins
with 480nm of pure tantala. I used the emasured
loss angles (after deposition, before annealing) |
7x |
|
368
|
Fri Jul 14 16:43:24 2017 |
Zach | Electronics | Modeling | Force profile matlab script | 2017-07-14
I have completed
a rough, but functioning script that calculates
the modal force profiles. The force values |
|
|
367
|
Wed Jul 12 15:08:59 2017 |
Zach | Electronics | Modeling | Model of actuator and sample | 2017-07-12
I am attaching
the first fully functioning model of the
actuator and sample. I cleared both meshes |
|
|
366
|
Thu Jul 6 12:48:54 2017 |
Zach | Electronics | Modeling | Resolving the factor of two | 2017-07-06
I resolved the factor
of two from Griffiths' discussion of
dipoles in non-uniform electric fields. The |
|
|
365
|
Thu Jul 6 12:08:35 2017 |
Zach | Electronics | Modeling | Checking physical parameters | 2017-07-06
I compared
the electric field and the polarization to
make sure that those calculations made sense. |
|
|
364
|
Wed Jul 5 16:40:51 2017 |
Zach | Electronics | Modeling | Force disparity-improvement | 2017-07-05
In order
to improve my data I shrunk the region of
the finer meshing slightly and made the mesh |
|
|
363
|
Wed Jul 5 12:01:51 2017 |
Zach | Electronics | Modeling | Force plots-Correct plots, force issue | 2017-07-05
I sorted
out my mathematical lapse in logic and computed
the correct force profiles in the perpendicular |
|
|
362
|
Wed Jul 5 10:01:29 2017 |
Gabriele | General | Measurements | S1600547 S1600548 S1600549 S1600550 | 2017-07-05
NOTE: at
9:40am switched off turbo pump in CR0 to
avoid vibrations
NOTE: |
|
|
361
|
Fri Jun 30 16:27:56 2017 |
Zach | Electronics | Modeling | Double Checking Model | 2017-06-30
In order
to confirm the accuracy of my model I checked
some easily computable quantities between |
|
|
360
|
Fri Jun 30 11:02:18 2017 |
Zach | Electronics | Modeling | Matching Forces | 2017-06-30
I adjusted
the plot parameters slightly so that it only
showed the actual force profile on the sample |
|
|
359
|
Thu Jun 29 16:40:41 2017 |
Zach | Electronics | Modeling | Accurate model and force profile | 2017-06-29
I created
a much more accurate model of the current
ESD setup from the technical drawings. My |
|
|
358
|
Thu Jun 29 13:15:01 2017 |
Alastair, Gabriele | General | General | Laser polishing | We laser polished S1600546, 547, 548, 549,
550 and 551 |
|
|
357
|
Wed Jun 28 15:50:15 2017 |
Gabriele | General | Measurements | S1600541 | 2017-06-28
We plan to leave
S1600541 in vacuum for a long period, and
measure the Q's periodically. |
|
|
356
|
Tue Jun 27 14:17:47 2017 |
Zach | Electronics | Modeling | Further plots and improving models | 2017-06-27
I built
a new model of the ESD to determine whether
or not the spikes in the electric field at |
|
|
355
|
Tue Jun 27 09:20:16 2017 |
Alena | General | Annealing | Annealing run (546-551) on 3" wafers - Crime 06/27/2017 | Started annealing run https://dcc.ligo.org/T1700293
Will be ready by June 28th afternoon |
|
|
354
|
Sat Jun 24 12:59:27 2017 |
Gabriele | General | Measurements | S1600541 S1600542 post annealing | 2017-06-24
12:47pm
in chamber
S1600541 in CR1
S1600542
in CR3
12:50pm |
|
|
353
|
Fri Jun 23 12:02:12 2017 |
Zach | Electronics | Modeling | Plots | 2017-06-23
I created
plots of the E field and potential from my
rough model of the ESD. This model has 1mm |
|
|
352
|
Thu Jun 22 15:37:20 2017 |
Zach | Electronics | Modeling | Beginning modeling | 2017-06-22
Created
the geometry of the ESD by creating blocks
and joining them with Unions. I then created |
|
|
351
|
Thu Jun 22 13:16:37 2017 |
Zach | Electronics | Modeling | Beginning with COMSOL | 2017-06-21
4:30 pm-
Installed COMSOL, began modeling current
ESD by creating parameters and the first |
|
|
350
|
Wed Jun 21 17:04:20 2017 |
Alena | General | Annealing | Annealing run (541-542) on 3" wafers - Crime 06/25/2017 | Started an annealing run https://dcc.ligo.org/LIGO-T1700271
Will be ready by Friday morning
|
|
|
349
|
Tue Jun 20 16:01:27 2017 |
Gabriele, Zach, Alastair | General | Measurements | S1600541 S1600542 (laser polished) | 2017-06-20
The two
substrates were laser polished (CO2 power
~ 23 W)
3:50pm installed in chamber
S1600541 |
|
|
348
|
Fri Jun 16 15:56:55 2017 |
Gabriele | General | Measurements | S1600541 S1600542 | 2017-06-16
3:25pm in
chamber
S1600541 in CR1
S1600542
in CR3
3:45pm, |
|
|
347
|
Thu Jun 15 11:20:13 2017 |
Gabriele | General | Measurements | S1600539 S1600540 | 2017-06-15
11:13am
in chamber
S1600539 in CR1
S1600540
in CR3
11:14am |
|
|
346
|
Wed Jun 14 16:53:54 2017 |
Gabriele | General | Measurements | S1600546 | 2017-06-14
4:44pm in
chamber
S1600546 in CR1
4:47pm
roughing pump on
4:55pm turbo |
|
|
345
|
Fri Jun 2 16:04:12 2017 |
Gabriele | General | Measurements | S1600525 S1600526 | 2017-06-02
3:55pm in
chamber:
S1600525 in CR1
S1600526
in CR3
3:56pm |
|
|
344
|
Tue May 16 13:44:01 2017 |
Gabriele | General | General | Effect of meshing on dilution factor simulation | I ran a series of COMSOL simulations to
compute the dilution factors of a coated
disk with the dimensions we are currently |
|
|
343
|
Mon May 15 13:19:12 2017 |
Gabriele | General | Measurements | Q measured again after four weeks in vacuum | I measured again two of the substrates
that have been sitting in the pumped-down
vacuum chamber for about four weeks. The |
|
|
342
|
Thu Apr 20 09:10:25 2017 |
Gabriele | General | Measurements | S1600542 S1600543 S1600544 S1600545 | 2017-04-20
9:09am in
chamber
S1600542 in CR1
S1600543
in CR2
S1600544 in CR3
S1600545 |
|
|
341
|
Fri Apr 14 13:49:17 2017 |
Gabriele | General | Measurements | S1600538 S1600539 S1600540 S1600541 | 2017-04-14
1:45pm in
chamber
S1600538 in CR1
S1600539
in CR2
S1600540 in CR3
S1600541 |
|
|
340
|
Tue Apr 11 14:07:48 2017 |
Gabriele | General | Measurements | S1600533 S1600535 S1600536 S1600537 | 2017-04-11
2:02pm,
in chamber
S1600533 in CR1
S1600535
in CR2
S1600536 is CR3
S1600537 |
|
|
339
|
Mon Apr 10 16:22:12 2017 |
Gabriele | General | Measurements | S1600529 S1600530 S1600531 S1600532 | 2017-04-10
4:10pm,
in chamber:
S1600529 in CR1
S1600530
in CR2
S1600531 in CR3
S1600532 |
|
|
338
|
Fri Apr 7 16:19:03 2017 |
Gabriele | Optics | Daily Progress | New 1103P laser installed | This afternoon I installed the new Lumentum
(former JDSU) HeNe laser, model 1103P in
CR0. |
|
|
337
|
Fri Apr 7 14:12:52 2017 |
Eric, Gabriele | General | General | S1600525 S1600526 S1600527 S1600528 | 2017-04-07
2:12pm in
chamber, pumps on
S1600525
in CR1
S1600526 in CR2
S1600527 |
|
|
336
|
Thu Mar 30 15:23:44 2017 |
Gabriele | Optics | General | Swapped HeNe laser in CR0 | The JDSU HeNe laser 1103P that I was using
is dead. I swapped it with a JDSU 1125P borrowed
from the 40m. |
|
|
335
|
Thu Mar 30 13:33:13 2017 |
Gabriele | General | Measurements | S1600477 | 2017-03-30
1:23pm,
in chamber CR2
1:25pm, roughing
pump started, clamps on
1:34pm |
|
|
334
|
Wed Mar 29 11:57:09 2017 |
Gabriele | General | Measurements | MIT sample | 2017-03-29
11:47am,
in chamber CR0, balanced
11:48am
roughing pump on
12:00pm, turbo |
|
|
333
|
Wed Mar 22 12:47:40 2017 |
Gabriele | General | Measurements | S1600469 S1600471 S1600481 S1600483 | 2017-03-22
12:38am,
in chamber
S1600469 in CR1
S1600471
in CR2
S1600481 in CR3
S1600483 |
|
|
332
|
Sat Mar 11 17:33:45 2017 |
Gabriele | General | Measurements | S1600490 | 2017-03-10
4:38pm,
in chamber
4:40pm, roughing pump
on
4:59pm, turbo pump on
2017-03-22
12:10am |
|