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  Coating Ring-down Measurement Lab elog, Page 4 of 18  Not logged in ELOG logo
ID Date Author Type Categorydown Subject Text Attachments
  302   Thu Feb 9 14:49:51 2017 GabrieleGeneralMeasurementsS1600489 S1600490 S1600491 S16004922017-02-09


2:30pm,
samples installed in the chamber:

S1600489 in bay 1
  
  306   Tue Feb 14 14:47:00 2017 GabrieleGeneralMeasurementsS16004952017-02-14


2:32pm,
in chamber (CR0), balanced
2:33pm
roughing pump on
2:45pm, turbo
  
  307   Tue Feb 14 15:50:23 2017 GabrieleGeneralMeasurementsS1600519 S1600520 S1600521 S1600522New substrates from Mark Optics, round,
with polished edges

2017-02-14


3:35pm
  
  308   Thu Feb 16 09:47:29 2017 GabrieleGeneralMeasurementsSummary of coating runs carried out at Montreal


Substrate
  
  309   Thu Feb 16 10:07:59 2017 GabrieleGeneralMeasurementsS16004912017-02-16


10:06am,
in chamber CR0, balanced
10:07am,
roughing pump on
10:31am, turbo
  
  310   Thu Feb 16 10:19:33 2017 GabrieleGeneralMeasurementsS1600453 S1600456 S1600461 S16004902017-02-16


10:17am
in chamber

S1600453 in CR1
S1600456
in CR2
S1600461 in CR3
S1600490
  
  312   Sat Feb 18 15:04:00 2017 GabrieleGeneralMeasurementsS1600481 S1600483 S1600469 S16004712017-02-18


9:54am in
chamber, balanced

S1600469
in CR1
S1600471
  
  313   Sun Feb 19 11:46:26 2017 GabrieleGeneralMeasurementsS1600458 S1600474 S16004912017-02-19


11:28am
an chamber:

S1600458 in CR1
S1600474
in CR2
S1600491 in CR3
empty
  
  315   Wed Feb 22 15:11:59 2017 GabrieleGeneralMeasurementsS1600519 S1600520 S1600521 S16005222017-02-22


2:59pm,
in chamber, balanced, removed all neutral
densities
3:02pm, roughing pump
  
  316   Thu Feb 23 10:54:41 2017 GabrieleGeneralMeasurementsS1600523 S16005242017-02-23


10:35am
in chamber, balanced

S1600523
in bay 1
S1600524 in bay 2


10:45am,
  
  317   Fri Feb 24 11:05:58 2017 GabrieleGeneralMeasurementsS1600456 S1600458 S1600461 S16004912017-02-24


10:50am,
in chamber, balanced, added neutral density
to laser on the 1/3 path

S1600456
  
  318   Fri Feb 24 13:21:03 2017 GabrieleGeneralMeasurementsQ of substrates with polished edgesBelow the measured Q values of the six
Suprasil 313 substrates, with polished edges,
after annealing at 900 degrees C for 9 hours.
 8x 
  320   Mon Feb 27 08:42:05 2017 GabrieleGeneralMeasurementsS1600453 S16004902017-02-27


8:40am,
in chamber, balanced

S1600453
in CR1
S1600491 in CR2 (i meant
  
  321   Mon Feb 27 13:13:05 2017 GabrieleGeneralMeasurementsS16004902017-02-27


12:59pm,
installed in chamber CR0, balanced
1:00pm,
roughing pump on
1:13pm, turbo
  
  322   Tue Feb 28 11:22:35 2017 GabrieleGeneralMeasurementsS1600463 S1600466 S1600475 S16004762017-02-28


11:20am,
in chamber

S1600463 in CR1
S1600466
in CR2
S1600475 in CR3
S1600476
  
  323   Tue Feb 28 14:20:50 2017 GabrieleGeneralMeasurementsNew MIT sample #12017-02-28


2:19pm,
installed in CR0, balanced, with 1/2"
inserts facing down

It looks
  
  324   Wed Mar 1 10:10:47 2017 GabrieleGeneralMeasurementsS1600469 S1600471 S1600481 S16004832017-03-01


10:10am,
in chamber, added neutral densities

S1600469
in CR1
S1600471 in CR2
S1600481
  
  325   Thu Mar 2 09:45:58 2017 GabrieleGeneralMeasurementsS1600456 S1600458 S1600461 S16004912017-03-02


9:31am,
in chamber, removed ND from path 2-4

S1600456
in CR1
S1600458 in CR2
S1600461
  
  327   Fri Mar 3 13:00:50 2017 GabrieleGeneralMeasurementsS1600453 S16004902017-03-03


12:45pm,
in chamber

S1600453 in CR3
S1600490
in CR4


12:45pm
  
  328   Fri Mar 3 13:01:59 2017 GabrieleGeneralMeasurementsNew MIT sample #22017-03-03


1:00pm,
in chamber, realigned optical lever to get
as close as possible to the edge of the disk
1:02pm,
  
  329   Tue Mar 7 11:01:58 2017 GabrieleGeneralMeasurementsS1600469 S1600471 S1600481 S16004832017-03-07


10:57am,
in chamber

S1600469 in CR1
S1600471
in CR2
S1600481 in CR3
S1600483
  
  330   Tue Mar 7 11:09:33 2017 GabrieleGeneralMeasurementsNew MIT sample #32017-03-07


11:08am,
in chamber CR0
11:09am, roughing
pump on
11:23am turbo pump on
3:37pm,
  
  332   Sat Mar 11 17:33:45 2017 GabrieleGeneralMeasurementsS16004902017-03-10


4:38pm,
in chamber
4:40pm, roughing pump
on
4:59pm, turbo pump on


2017-03-22


12:10am
  
  333   Wed Mar 22 12:47:40 2017 GabrieleGeneralMeasurementsS1600469 S1600471 S1600481 S16004832017-03-22


12:38am,
in chamber

S1600469 in CR1
S1600471
in CR2
S1600481 in CR3
S1600483
  
  334   Wed Mar 29 11:57:09 2017 GabrieleGeneralMeasurementsMIT sample2017-03-29


11:47am,
in chamber CR0, balanced
11:48am
roughing pump on
12:00pm, turbo
  
  335   Thu Mar 30 13:33:13 2017 GabrieleGeneralMeasurementsS16004772017-03-30


1:23pm,
in chamber CR2
1:25pm, roughing
pump started, clamps on
1:34pm
  
  339   Mon Apr 10 16:22:12 2017 GabrieleGeneralMeasurementsS1600529 S1600530 S1600531 S16005322017-04-10


4:10pm,
in chamber:

S1600529 in CR1
S1600530
in CR2
S1600531 in CR3
S1600532
  
  340   Tue Apr 11 14:07:48 2017 GabrieleGeneralMeasurementsS1600533 S1600535 S1600536 S16005372017-04-11


2:02pm,
in chamber

S1600533 in CR1
S1600535
in CR2
S1600536 is CR3
S1600537
  
  341   Fri Apr 14 13:49:17 2017 GabrieleGeneralMeasurementsS1600538 S1600539 S1600540 S16005412017-04-14


1:45pm in
chamber

S1600538 in CR1
S1600539
in CR2
S1600540 in CR3
S1600541
  
  342   Thu Apr 20 09:10:25 2017 GabrieleGeneralMeasurementsS1600542 S1600543 S1600544 S16005452017-04-20


9:09am in
chamber

S1600542 in CR1
S1600543
in CR2
S1600544 in CR3
S1600545
  
  343   Mon May 15 13:19:12 2017 GabrieleGeneralMeasurementsQ measured again after four weeks in vacuumI measured again two of the substrates
that have been sitting in the pumped-down
vacuum chamber for about four weeks. The
 comparison.pngcomparison.png 
  345   Fri Jun 2 16:04:12 2017 GabrieleGeneralMeasurementsS1600525 S16005262017-06-02


3:55pm in
chamber:

S1600525 in CR1
S1600526
in CR3


3:56pm
  
  346   Wed Jun 14 16:53:54 2017 GabrieleGeneralMeasurementsS16005462017-06-14


4:44pm in
chamber

S1600546 in CR1


4:47pm
roughing pump on
4:55pm turbo
  
  347   Thu Jun 15 11:20:13 2017 GabrieleGeneralMeasurementsS1600539 S16005402017-06-15


11:13am
in chamber

S1600539 in CR1
S1600540
in CR3


11:14am
  
  348   Fri Jun 16 15:56:55 2017 GabrieleGeneralMeasurementsS1600541 S16005422017-06-16


3:25pm in
chamber

S1600541 in CR1
S1600542
in CR3


3:45pm,
  
  349   Tue Jun 20 16:01:27 2017 Gabriele, Zach, AlastairGeneralMeasurementsS1600541 S1600542 (laser polished)2017-06-20


The two
substrates were laser polished (CO2 power
~ 23 W)
3:50pm installed in chamber

S1600541
  
  354   Sat Jun 24 12:59:27 2017 GabrieleGeneralMeasurementsS1600541 S1600542 post annealing2017-06-24


12:47pm
in chamber

S1600541 in CR1
S1600542
in CR3


12:50pm
  
  357   Wed Jun 28 15:50:15 2017 GabrieleGeneralMeasurementsS16005412017-06-28

We plan to leave
S1600541 in vacuum for a long period, and
measure the Q's periodically.
  
  362   Wed Jul 5 10:01:29 2017 GabrieleGeneralMeasurementsS1600547 S1600548 S1600549 S16005502017-07-05


NOTE: at
9:40am switched off turbo pump in CR0 to
avoid  vibrations
NOTE:
  
  369   Tue Jul 18 09:13:08 2017 GabrieleGeneralMeasurementsShear and bulk losses in tantalaS1600525 has been coated in Fort Collins
with 480nm of pure tantala. I used the emasured
loss angles (after deposition, before annealing)
 7x 
  370   Wed Jul 19 21:19:14 2017 GabrieleGeneralMeasurementsShear and bulk losses in tantalaTo quantify which of the fit below is the
most significant, I did a Bayesian analysis
(thanks Rory for the help!).
  
  372   Fri Jul 21 08:42:09 2017 GabrieleGeneralMeasurementsS16005252017-07-21


8:30am,
in chamber (CR4)
8:32am, roughing
pump on
8:41am, turbo pump on
Excitations


Quiet
  
  373   Fri Jul 21 14:55:02 2017 GabrieleGeneralMeasurementsShear and bulk losses in annealed tantalaI repeated the analysis for bulk and shear
losses described in an early
elog entry, with the same coating, but
 8x 
  374   Sat Jul 22 13:05:46 2017 GabrieleGeneralMeasurementsS1600533 S1600535 S1600536 S16005472017-07-22


12:55pm
in chamber

S1600533 in CR1
S1600535
in CR2
S1600536 in CR3
S1600547
  
  376   Mon Jul 24 16:06:11 2017 GabrieleGeneralMeasurementsS1600530 S1600532 S1600537 S16005392017-07-24


3:55pm installed
in chamber

S1600530 in CR1
S1600532
in CR2
S1600537 in CR3
S1600539
  
  377   Tue Jul 25 11:22:37 2017 GabrieleGeneralMeasurementsS1600548 S1600550 S16005382017-07-25


11:12am
in chamber (non standard order is not a typo!!)

S1600548
in CR1
S1600550 in CR2
S1600538
  
  380   Wed Jul 26 16:22:22 2017 GabrieleGeneralMeasurementsS1600528 S16005312017-07-26


4:14pm in
chamber

S1600528 in CR1
S1600531
in CR2


4:16pm
  
  384   Mon Jul 31 13:21:37 2017 Gabriele, RosalieGeneralMeasurementsS1600520 S1600521 S1600523 S16005242017-07-31


1:20pm in
chamber

S1600520 in CR1
S1600521
in CR2
S1600523 in CR3
S1600524
  
  385   Tue Aug 1 10:19:39 2017 Gabriele, RosalieGeneralMeasurementsS1600519, S16005222017-08-01


10:05am,
in chamber

S1600519 in CR1
S1600522
in CR2


10:11am,
  
  387   Wed Aug 2 11:45:27 2017 Gabriele, RosalieGeneralMeasurementsS1600553, S1600554, S1600555, S16005562017-08-02


11:33am
in chamber

S1600553 in CR1
S1600554
in CR2
S1600555 in CR3
S1600556
  
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