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  Coating Ring-down Measurement Lab elog, Page 18 of 18  Not logged in ELOG logo
ID Date Authordown Type Category Subject
  621   Wed Feb 13 15:37:33 2019 AlenaGeneralMeasurementsS1600655, S1600656, S1600665, S1600666

2019-02-13

  • 16:03  in chamber
    • S1600655 in CR1
    •  S1600656 in CR2
    • S1600665 in CR3
    • S1600666 in CR4
  • 16:11 roughing pump on
  • 16:25 turbo pump on
  622   Thu Feb 14 15:30:30 2019 AlenaGeneralMeasurementsS1600546, S1600551, S1600552, S1600554

2019-02-14

  • 15:55 in chamber
    • S1600546 in CR1
    • S1600551 in CR2
    • S1600552 in CR3
    • S1600554 in CR4
  • 16:07 roughing pump on
  • 16:15 am turbo pump on
  640   Wed Mar 20 13:10:01 2019 AlenaGeneralMeasurementsS1900071 S1900072

2019-03-20

  • 1:20 pm in chamber
    • S1900071 in CR1
    • S1900072 in CR2
  • 1:36 pm roughing pump on
  • 1:47 pm turbo pump on
  641   Thu Mar 21 16:47:55 2019 AlenaGeneralMeasurementsS1600677, S1600678, S1600679, S1600680

2019-03-21

  • 3:30 pm in chamber
    • S1600677 in CR1
    • S1600678 in CR2
    • S1600679 in CR3
    • S1600680 in CR4
  • 3:55 pm roughing pump on
  • 4:10 pm turbo pump on
  660   Mon Apr 15 13:22:53 2019 AlenaGeneralMeasurementsS1600693 S1600694 S1600695 S1600696

2019-04-13

  • Laser was clipping on a laminated paper on the optical table. this caused signal on QPD2 and QPD4 be almost 0. Restarted the measurement after the issue was resolved
    • S1600693 in CR1
    • S1600694 in CR2
    • S1600695 in CR3
    • S1600696 in CR4
  661   Mon Apr 15 13:26:13 2019 AlenaGeneralMeasurementsS1600697 S1600698 S1600699 S1600700

2019-04-15

  • 1:34 pm in chamber
    • S1600697 in CR1
    • S1600698 in CR2
    • S1600699 in CR3
    • S1600700 in CR4
  • 1:47 pm roughing pump on
  • 2:16 pm turbo pump on
  662   Tue Apr 16 14:44:20 2019 AlenaGeneralMeasurementsS1600701 S1600702 S1600703 S1600704

2019-04-15

  • 2:51 pm in chamber
    • S1600701 in CR1
    • S1600702 in CR2
    • S1600703 in CR3
    • S1600704 in CR4
  • 3:03 pm roughing pump on
  • 3:15 pm turbo pump on
  663   Wed Apr 17 15:52:27 2019 AlenaGeneralMeasurementsS1600657, S1600658, S1600659, S1600660

2019-04-17

  • 3:52 pm in chamber
    • S1600657 in CR1
    • S1600658 in CR2
    • S1600659 in CR3
    • S1600660 in CR4
  • 3:59 pm roughing pump on
  • 4:10 pm turbo pump on
  664   Thu Apr 18 10:31:32 2019 AlenaGeneralMeasurementsS1600661 S1600662 S1600667 S1600668

2019-04-18

  • 10:36  in chamber
    • S1600661 in CR1
    • S1600662 in CR2
    • S1600667 in CR3
    • S1600668 in CR4
  • 2:03 pm pm roughing pump on
  • 2:20 pm turbo pump on
  665   Fri Apr 19 08:48:39 2019 AlenaGeneralMeasurementsS1600649 S1600650 S1600651 S1600652

2019-04-19

  • 9:00 am  in chamber
    • S1600649 in CR1
    • S1600650 in CR2
    • S1600651 in CR3
    • S1600652 in CR4
  • 9:25 am roughing pump on
  • 9:38 am turbo pump on
  688   Mon May 13 12:50:14 2019 AlenaGeneralMeasurementsS1600634 S1600635 S1600667 S1600668

2019-05-13

  • 12:40 pm  in chamber
    • S1600634 in CR1
    • S1600635 in CR2
    • S1600667 in CR3
    • S1600668 in CR4
  • 12:50 pm roughing pump on
  • 13:03 pm turbo pump on
  690   Tue May 14 15:41:51 2019 AlenaGeneralMeasurementsS1600649 S1600650 S1600651 S1600652

2019-05-14

  • 3:30 pm  in chamber
    • S1600649 in CR1
    • S1600650 in CR2
    • S1600651 in CR3
    • S1600652 in CR4
  • 3:40 pm roughing pump on
  • 3:55 pm turbo pump on
  691   Wed May 15 13:36:17 2019 AlenaGeneralMeasurementsS1600684 S1600685 S1600686 S1600689

2019-05-10

  • 13:30 in chamber
    • S1600684 in CR1
    • S1600685 in CR2
    • S1600686 in CR3
    • S1600689 in CR4
  • 13:52 roughing pump on
  • 14:01 am turbo pump on
  692   Thu May 16 11:23:13 2019 AlenaGeneralMeasurementsS1600662

2019-05-16

  • 11:10 am in chamber
    • S1600662 in CR1
  • 11:20 am roughing pump on
  • 11:31 am turbo pump on
  693   Thu May 16 21:18:40 2019 AlenaGeneralMeasurementsS1600634 S1600635 S1600667 S1600668

2019-05-16

  • 21:00  in chamber
    • S1600634 in CR1
    • S1600635 in CR2
    • S1600667 in CR3
    • S1600668 in CR4
  • 21:05 roughing pump on
  • 21:24 pm turbo pump on
  694   Fri May 17 12:53:19 2019 AlenaGeneralMeasurementsS1600649 S1600650 S1600651 S1600652

2019-05-17

  • 12:36 pm  in chamber
    • S1600649 in CR1
    • S1600650 in CR2
    • S1600651 in CR3
    • S1600652 in CR4
  • 12:50 pm roughing pump on
  • 13:03 pm turbo pump on
  695   Mon May 20 08:17:23 2019 AlenaGeneralMeasurementsS1600667

2019-05-20

  • 08:17 am in chamber
    • S1600667 in CR1
  • 08:56 am roughing pump on
  • 09:05 am turbo pump on
  697   Mon May 20 16:08:19 2019 AlenaGeneralMeasurementsS1600677 S1600681 S1600682 S1600683
  • 2019-05-20

  • 16:08  in chamber
    • S1600677 in CR1
    • S1600681 in CR2
    • S1600682 in CR3
    • S1600683 in CR4
  • 16:22 roughing pump o
  • 16:31 turbo pump on
  698   Tue May 21 09:44:12 2019 AlenaGeneralMeasurementsS1600684 S1600685 S1600686 S1600689

2019-05-21

  • 09:20 am in chamber
    • S1600684 in CR1
    • S1600685 in CR2
    • S1600686 in CR3
    • S1600689 in CR4
  • 09:30 am roughing pump on
  • 09:44 am turbo pump on
  699   Wed May 22 07:41:23 2019 AlenaGeneralMeasurementsS1600542 S1600664 S1600680 S1600678

2019-05-22

  • 08:00 am in chamber
    • S1600542 in CR1
    • S1600664 in CR2
    • S1600678 in CR3
    • S1600680 in CR4
  • 08:19 am roughing pump on
  • 08:30 am turbo pump on

Correct samples placement:

  • S1600542 in CR1
  • S1600664 in CR2
  • S1600680 in CR3
  • S1600678 in CR4
  700   Thu May 23 09:59:09 2019 AlenaGeneralMeasurementsS1600649 S1600650 S1600651 S1600652

2019-05-23

  • 09:50 am in chamber
    • S1600649 in CR1
    • S1600650 in CR2
    • S1600651 in CR3
    • S1600652 in CR4
  • 10:09 am roughing pump on
  • 10:15 am turbo pump on
  701   Thu May 23 18:16:11 2019 AlenaGeneralMeasurementsS1600709 S1600710 S1600711 S1600712

2019-05-23

  • 18:00 in chamber
    • S1600709 in CR1
    • S1600710 in CR2
    • S1600711in CR3
    • S1600712 in CR4
  • 18:15 roughing pump on
  • 18:26 turbo pump on
  703   Tue May 28 15:48:42 2019 AlenaGeneralVacuumLow pressure gauge exchange

After venting the vacum chamber (CR14) a few times, checking for leaks and trying to tune settings to the gauges controller, I gave up. I removed the low pressure gauge from the newer vaccum system (CR14). Inspection did now show any obviouse depositions around the electrode (due to some burns). I will pack the gauge ans send it to the manufacture for an RMA. Took the same gause from the older vaccum system (CR0) and installed it on CR14. Started pumping down. The low pressure gause turned on just fine. Will check the preassure in an our before starting a measurement.

  704   Wed May 29 08:36:07 2019 AlenaGeneralMeasurementsS1600713 S1600714 S1600715 S1600716

2019-05-24

  • 15:00 in chamber
    • S1600713 in CR1
    • S1600714 in CR2
    • S1600715in CR3
    • S1600716 in CR4

2019-05-25

  • 16:00 roughing pump on
  • 16:10 turbo pump on

2019-05-29

restarted the measuterment

  705   Thu May 30 13:53:03 2019 AlenaGeneralMeasurementsS1600717 S1600718 S1600719 S1600720

2019-05-30

  • 14:30 in chamber
    • S1600717 in CR1
    • S1600718 in CR2
    • S1600719in CR3
    • S1600720 in CR
  • 14:40 roughing pump on
  • 14:53 turbo pump on
  706   Tue Jun 4 15:07:55 2019 AlenaGeneralMeasurementsS1600542 S1600664 S1600678 S1600680

2019-06-04

  • 15:10 in chamber
    • S1600542 in CR1
    • S1600664 in CR2
    • S1600678 in CR3
    • S1600680 in CR4
  • 15:18 roughing pump on
  • 15:31 turbo pump on
  707   Fri Jun 7 07:32:51 2019 AlenaGeneralMeasurementsS1600542 S1600664 S1600678 S1600680

2019-06-06

  • 15:40 in chamber
    • S1600542 in CR1
    • S1600664 in CR2
    • S1600678 in CR3
    • S1600680 in CR4
  • 15:48 roughing pump on
  • 15:57 turbo pump on

The mesuremet started next morning 2019-06-07 at 7:30 AM

  854   Tue Mar 31 13:12:21 2020 AlenaGeneralMeasurementsS1600784 S1600785 S1600789 S1600791

2020-03-31

  • 1:00 pm in chamber
    • S1600784in CR1
    • S1600785 in CR2
    • S1600789 in CR3
    • S1600791 in CR4
  • 1:05 pm roughing pump on
  • 1:14 pm turbo pump on
  358   Thu Jun 29 13:15:01 2017 Alastair, GabrieleGeneralGeneralLaser polishing

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

  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.

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