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  Coating Ring-down Measurement Lab elog, Page 1 of 18  Not logged in ELOG logo
New entries since:Wed Dec 31 16:00:00 1969
ID Date Authorup Type Category Subject
  409   Tue Aug 15 16:43:58 2017 ZachElectronicsModelingUnchanged Mode Insight

2017-08-15

  • It appears to me that the major factor limiting the improvement of the modes that either remain equal or diminish is that the original design was already quite good at exciting those modes. As can be seen in the attached plots, the original design is about as well centered over the 5 modes as a rectangle on the x axis can be. As a result, maintaing a constant potential on the ESD it would be difficult to improve the coupled force without specifically tailoring the force profile to a certain mode.
  • In order from left to right, the frequencies of the given modes are 14.2 kHz, 16.2 kHz, 16.3 kHz, 23.8 kHz, and 27.4 kHz.

Attachment 1: Double.pdf
Double.pdf
Attachment 2: Thin.pdf
Thin.pdf
Attachment 3: Original.pdf
Original.pdf
  358   Thu Jun 29 13:15:01 2017 Alastair, GabrieleGeneralGeneralLaser polishing

We laser polished S1600546, 547, 548, 549, 550 and 551

  33   Fri Jul 8 15:26:37 2016 AlenaFacilityDaily ProgressVacuum chamber tests

Fixed the 307 gauge controller (a missing contact on the rair panel). The low pressure gauge was connected to 1G port and has measured 1.7E-6 torr. We are not sure since how long the turbo was operating (no vacuum logger yet).

 

 

Attachment 1: WP_20160708_12_25_35_Pro.jpg
WP_20160708_12_25_35_Pro.jpg
Attachment 2: WP_20160708_12_25_41_Pro.jpg
WP_20160708_12_25_41_Pro.jpg
  36   Mon Jul 11 14:56:45 2016 AlenaFacilityDaily ProgressVacuum chamber tests

Installed a gate valve between the roughing and tubbo pump. See below a pump down curve. The convection gauge is not calibrated. the turbo started at 14th min (at about 3 torr)

Attachment 1: 20160711.png
20160711.png
  38   Mon Jul 11 17:04:06 2016 AlenaFacilityDaily ProgressVacuum chamber tests

At 5pm the pressure was 6.5e-6 torr.

Checked again at:

  • 9am, pressure was 2e-6 torr
  • 11:30am, pressure was 1.5e-6 torr
  • 5pm, pressure was 1.4e-6 torr
Quote:

Installed a gate valve between the roughing and tubbo pump. See below a pump down curve. The convection gauge is not calibrated. the turbo started at 14th min (at about 3 torr)

 

  41   Thu Jul 14 16:56:00 2016 AlenaFacilityDaily Progresstest vacuum system

Please see prosidures for pumping down and venting with air for the test vacuum chamber here https://dcc.ligo.org/T1600304

  68   Thu Jul 28 14:01:27 2016 AlenaGeneralDaily ProgressClean room

Ordered the clean room (hardware+hepa filters) and vacuum gauges

  149   Thu Oct 27 14:02:38 2016 AlenaGeneralGeneralAnnealing

Annealing run (447-448) on 3" wafers - Crime 10/27/2016 https://dcc.ligo.org/T1600485-v1

 

  160   Fri Nov 4 16:16:23 2016 AlenaGeneralGeneralAnnealing run

Annealing run (454-459) on 3" wafers - Crime 11/02/2016 https://dcc.ligo.org/LIGO-T1600510

Annealing run (460-465) on 3" wafers - Crime 11/04/2016 https://dcc.ligo.org/T1600513-x0

  210   Wed Nov 23 14:16:59 2016 AlenaGeneralGeneralMicroscope inspection

Microscope inspection of samples:

S1600487  https://dcc.ligo.org/S1600487-v7

S1600438 https://dcc.ligo.org/S1600438

 

 

  263   Wed Jan 18 14:29:16 2017 AlenaGeneralAnnealingAnnealing run (489-490) on 3" wafers - Crime 01/18/2017


Started annealing run Annealing run (489-490) on 3" wafers - Crime 01/18/2017 https://dcc.ligo.org/T1700027 using new hardware

 

  264   Thu Jan 19 07:32:33 2017 AlenaGeneralVacuumNew chamber first pimp down

The new chamber was build. The first attempt to pump down was unsuccessful because of dislocated lid. After the lit was placed properly, the chamber was pumped down to 0.1 torr within 8 min. In future a sky hook will be used to help placing the lid properly. The clamps should not be placed on the lid before the roughing pump turned on.

The turbo pump controller failed. Error code 698 – call the vendor.

  267   Thu Jan 19 14:27:02 2017 AlenaGeneralVacuumFirst vacuum test new chamber

Turbo pump controller (new chamber) was configured. Need to reduce the frequency or setup a standby mode. First pump down: E-7 range reached within about an hour. See plot: blue - old crime chamber, pink - new crime chamber.

  269   Fri Jan 20 16:00:36 2017 AlenaGeneralAnnealingAnnealing run (491-496) on 3" wafers - Crime 01/20/2017

 Started Annealing run (491-496) on 3" wafers - Crime 01/20/2017 https://dcc.ligo.org/LIGO-T1700036 Will be done by Monday

  350   Wed Jun 21 17:04:20 2017 AlenaGeneralAnnealingAnnealing 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

 

  355   Tue Jun 27 09:20:16 2017 AlenaGeneralAnnealingAnnealing 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

  511   Wed Apr 4 16:36:15 2018 AlenaGeneralMeasurementsS1600551, S1600552, S1600554, S1600555

2018-04-04

  • 16:10am in chamber
    • S1600551 in CR1
    • S1600552 in CR2
    • S1600554 in CR3
    • S1600555 in CR4
  • 16:30 roughing pump on
  • 16:40 turbo pump on
  515   Mon Apr 9 15:34:57 2018 AlenaGeneralMeasurementsS1800634

2018-04-09

  • 3:30 pm in chamber
    • S1800634 in CR1
  • 3:30 pm roughing pump on
  • 3:45 pm turbo pump on
  523   Tue May 1 16:25:47 2018 AlenaGeneralMeasurementsS1800516

2018-05-01

  • 16:10 pm in chamber
    • S1800516 in CR0
  • 16:20 pm roughing pump on
  • 16:40 pm turbo pump on
  524   Wed May 2 10:08:20 2018 AlenaGeneralMeasurementsS1800520

2018-05-02

  • 10:05 am in chamber
    • S1800520 in CR0
  • 10:06 am roughing pump on
  • 10:20 am  turbo pump on
  525   Thu May 3 17:37:18 2018 AlenaGeneralMeasurementsS1800520

2018-05-02

  • 17:37 added ND because QPD was oversaturated. Repeating the measurement without venting
    • S1800520 in CR0
  526   Fri May 4 13:54:55 2018 AlenaGeneralMeasurementsS1800516 AK_01 AK_03

  2018-05-04

  • 02:21 pm in chamber:
    • AK_01 in CR1
    • AK_03 in CR3
  • 02:25 pm roughing pump on
  • 02:44 pm turbo pump on

 

  • 03:30 pm in chamber:
    • S1800516 in CR0
  • 03: 35 pm roughing pump on
  • 03:42 turbo pump on
  527   Wed May 9 13:57:41 2018 AlenaGeneralMeasurementsS1800515

2018-05-09

 

  • 01:57 pm in chamber:
    • S1800515 in CR0
  • 01:58 pm roughing pump on
  • 14:05  turbo pump on
  528   Thu May 10 10:20:08 2018 AlenaGeneralMeasurementsS1600593, S1600594, S1600595, S1600596, S1800519

2018-04-04

  • 12:09 pm in chamber
    • S1600593 in CR1
    • S1600594 in CR2
    • S1600595 in CR3
    • S1600596 in CR4
  • 12:00 pm roughing pump on
  • 12:12 pm turbo pump on

     

  • 12:30 pm in chamber
    • S1800519 in CR0
  • 12:31 pm roughing pump on
  • 12:50 pm turbo pump on
  529   Fri May 11 14:27:54 2018 AlenaGeneralMeasurementsS1600597 S1600598 S1600599 S1600600 S1800516
  • 02:27 pm in chamber
    • S1600597 in CR1
    • S1600598 in CR2
    • S1600599 in CR3
    • S1600600 in CR4
  • 02:27 pm roughing pump on
  • 02:35 pm turbo pump on

 

  • 02:40 pm in chamber
    • S1800516 in CR0
  • 02:40 pm roughing pump on
  • 02:54 pm turbo pump on
  530   Mon May 14 13:42:42 2018 AlenaGeneralMeasurementsS1800520
  • 01:41 pm in chamber
    • S1800520 in CR0
  • 01:41 pm roughing pump on
  • 01:59 pm turbo pump on
  531   Tue May 15 15:10:52 2018 AlenaGeneralMeasurementsS1600587 S1600588
  • 03:10 pm in chamber
    • S1600587 in CR1
    • S1600588 in CR2
  • 03:10 pm roughing pump on
  • 03:24 pm turbo pump on
  532   Fri May 18 17:06:28 2018 AlenaGeneralMeasurementsS1600528 S1600531 S1600543 S1600544
  • 16:57 in chamber
    • S1600528 in CR1
    • S1600531 in CR2
    • S1600543 in CR3
    • S1600544 in CR4
  • 16:57 roughing pump on
  • 17:06 turbo pump on
  533   Mon May 21 11:01:36 2018 AlenaGeneralMeasurementsS1600609 S1600611 S1600612 S1600613
  • 11:00 in chamber
    • S1600609in CR1
    • S1600611 in CR2
    • S1600612 in CR3
    • S1600613 in CR4
  • 11:15 roughing pump on
  • 11:26 turbo pump on
  534   Tue May 22 08:40:45 2018 AlenaGeneralMeasurementsS1600587 S1600588 S1600614
  • 09:04 in chamber
    • S1600587 in CR1
    • S1600588 in CR2
    • S1600614 in CR3
  • 09.15 roughing pump on
  • 09:20 turbo pump on
  535   Tue May 22 16:11:45 2018 AlenaGeneralMeasurementsS1600526 S1600553 S1600557 S1600558
  • 16:39 in chamber
    • S1600526 in CR1
    • S1600553 in CR2
    • S1600557 in CR3
    • S1600558 in CR4
  • 16:39 roughing pump on
  • 16:46 turbo pump on
  536   Fri Jun 1 17:46:19 2018 AlenaGeneralMeasurementsS1800617
  • 17:40 pm in chamber
    • S1800617 in CR0
  • 17:45 roughing pump on
  • 17:57 turbo pump on
  537   Sat Jun 2 16:23:20 2018 AlenaGeneralMeasurementsS1800618
  • 16:20 in chamber
    • S1800618 in CR0
  • 16:20 roughing pump on
  • 16:30 turbo pump on
  538   Sun Jun 3 14:45:51 2018 AlenaGeneralMeasurementsS1800619
  • 14:45 in chamber
    • S1800619 in CR0
  • 14:45 roughing pump on
  • 14:55 turbo pump on
  539   Thu Jun 7 14:41:53 2018 AlenaGeneralMeasurementsS1800620
  • 14:41 in chamber
    • S1800620 in CR0
  • 14:45 roughing pump on
  • 14:54 turbo pump on
  540   Mon Jun 11 14:18:29 2018 AlenaGeneralMeasurementsS1600541
  • 14:18 in chamber
    • S1600541 in CR1
  • 14:18 roughing pump on
  • 14:23 turbo pump on
  541   Fri Jun 22 10:51:46 2018 AlenaGeneralMeasurementsS1600594, S1600595, S1600597, S1600598
  • 10:50 am in chamber
    • S1600594 in CR1
    • S1600595in CR2
    • S1600597 in CR3
    • S1600598 in CR4
  • 10:50 pm roughing pump on
  • 11:00 pm turbo pump on
  542   Fri Jun 22 10:53:06 2018 AlenaGeneralGeneralLaser failure

One of the HeNe lasers died (the one for measuring slots CR2 and CR4). It had no outgoing light when I came in this morning. I connected the laser to another identical power supply. The laser started going on and of and the power supply was making some sparkling noise. I swapped the laser with the test chamber (CR0). No re alignment was required for measurement slots CR1 and CR3. A very slight alignment was done for measuring slots CR2 and CR4 after the laser from the test chamber was installed. So temporary we do not have a setup to measure 2" samples easily. Attaching pictures of the broken laser`s label

Attachment 1: 20180622_112134.jpg
20180622_112134.jpg
Attachment 2: 20180622_112138.jpg
20180622_112138.jpg
  543   Sat Jun 23 21:15:15 2018 AlenaGeneralMeasurementsS1600594, S1600595, S1600597, S1600598

Repeating the previous measurement after correcting the alignement. Did not vent the chamber.

  • 21:15 in chamber
    • S1600594 in CR1
    • S1600595in CR2
    • S1600597 in CR3
    • S1600598 in CR4
  545   Mon Jun 25 16:17:14 2018 AlenaGeneralMeasurementsS1600584, S1600599, S1600591
  • 16:18 in chamber
    • S1600584 in CR1
    • S1600599 in CR2
    • S1600591 in CR3
  • 16:28 roughing pump on
  • 16:37 turbo pump on
  546   Wed Jun 27 18:27:46 2018 AlenaGeneralMeasurementsS1600597, S1600598, S1600599
  • 18:27 in chamber
    • S1600597 in CR1
    • S1600598 in CR2
    • S1600599 in CR3
  • 18:28 roughing pump on
  • 18:32 turbo pump on
  547   Thu Jun 28 17:40:59 2018 AlenaGeneralMeasurementsS1600594, S1600595
  • 18:01 in chamber
    • S1600594 in CR1
    • S1600594 in CR2
  • 18:09 roughing pump on
  • 18:13 turbo pump on
  548   Fri Jun 29 10:52:00 2018 AlenaGeneralMeasurementsS1800614 S1800618 S1800619 S1600600
  • 11:01 in chamber
    • S1800614 in CR1
    • S1800618 in CR2
    • S1800619 in CR3
    • S1600600 in CR4
  • 11:10 roughing pump on
  • 11:20 turbo pump on
  549   Fri Jul 6 19:43:54 2018 AlenaGeneralMeasurementsS1800614 S1800619 S1600600
  • 19:30 in chamber
    • S1800614 in CR1
    • S1800618 in CR2
    • S1600600 in CR4
  • 19:40 roughing pump on
  • 19:45 turbo pump on

Started a measurement for CR1 and CR2 only. CR4 is instaled, centered and ready to be measured later

  551   Wed Jul 25 11:23:44 2018 AlenaGeneralGeneralCR14 re-alignement

Aligned CR14 chamber back to 3" disks.

Attachment 1: 20180725_111415.jpg
20180725_111415.jpg
  552   Wed Jul 25 11:24:51 2018 AlenaGeneralMeasurementsS1600561, S1600562, S1600563, S1600564
  • 12:20 pm in chamber
    • S1600561 in CR1
    • S1600562in CR2
    • S1600563 in CR3
    • S160056 in CR4
  • 12:20 pm roughing pump on
  • 12:26 pm turbo pump on
  553   Thu Jul 26 14:55:53 2018 AlenaGeneralMeasurementsS1600571, S1600572
  • 14:30 in chamber
    • S1600571 in CR1
    • S1600572 in CR2
  • 14:40 roughing pump on
  • 14:50 turbo pump on
  554   Thu Jul 26 15:33:00 2018 AlenaGeneralGeneralNew laser instaled for the old chanber cr0

Installed a new HeNe laser for the old chamber cr0. No major alignement was required. The laser mount restored the alinement. Will run a test measurement now.

Attachment 1: 20180726_152508.jpg
20180726_152508.jpg
Attachment 2: 20180726_152521.jpg
20180726_152521.jpg
Attachment 3: 20180726_152530.jpg
20180726_152530.jpg
Attachment 4: 20180726_154138.jpg
20180726_154138.jpg
  555   Thu Jul 26 15:35:48 2018 AlenaGeneralMeasurementsS1800620
  • 15:20 in chamber
    • S1800620 in CR0
  • 15:30 roughing pump on
  • 15:45 turbo pump on
  556   Fri Jul 27 18:06:49 2018 AlenaGeneralMeasurementsS1600641, S1600642, S1600643, S1600644
  • 17:50 in chamber
    • S1600641 in CR1
    • S1600642 in CR2
    • S1600643 in CR3
    • S1600644 in CR4
  • 18:04 roughing pump on
  • 18:13 turbo pump on
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