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  Coating Ring-down Measurement Lab elog, Page 17 of 18  Not logged in ELOG logo
ID Date Authorup Type Category Subject Text Attachments
  198   Thu Nov 17 17:59:44 2016 Gabriele, AlastairGeneralGeneralCO2 laser polishing testsWe improved the control software of the
laser polishing system: now the rotation
speed is large when the laser is missing
  205   Mon Nov 21 16:21:12 2016 Gabriele, AlastairGeneralGeneralLaser polishing of S1600487The sample has been laser polished this
afternoon, 0.5mm/s, average power 23 W.

We moved the lens that focuses the
  220   Thu Dec 1 11:59:21 2016 Gabriele, AlastairGeneralGeneralLaser polishing Today we laser polished S1600484, S1600485
and S1600486.

  88   Wed Aug 17 16:41:05 2016 Gabriele, AlenaCleanDaily ProgressClean room construction progressThe clean room frame is built and secured
to the floor and wall. Panels are being installed
on the ceiling and back. Also, the optical
  89   Thu Aug 18 18:15:18 2016 Gabriele, AlenaCleanDaily ProgressClean room construction progressCeiling, back and side panels are installed.
The air filters have been cabled and connected
to the power supply.
  285   Tue Jan 31 16:50:55 2017 Gabriele, AlenaGeneralVacuumFirst pump-down with setupThis afternoon we started the pump-down
with all the system installed into the chamber.
Unfortunately the IGM vacuum gauge isn't
  476   Mon Mar 5 11:03:18 2018 Gabriele, AnthonyGeneralMeasurementsFused silica substrated for metallic glass tests2018-03-05

in chamber:

AK_01 in CR1
in CR2
AK_03 in CR3
  453   Thu Jan 25 15:33:51 2018 Gabriele, BenGeneralAnnealingAnnealing of 50mm disksAnnealing of 8 fused silica substrates
(50mm/0.5mm) started at 3:30pm, January 25th
2018. Standard program: 9 hours ramp up to
  241   Mon Dec 12 16:34:15 2016 Gabriele, Brittany, AaronGeneralMeasurementsS16004802016-12-12

in chamber, balanced
4:33pm, roughing
pump on
4:46pm, turbo pump on



  456   Tue Jan 30 15:56:36 2018 Gabriele, CraigElectronicsConfigurationTemporary data acqusition for PSL lab beat note and accelerometersWe set up the model x3tst to acquire at
65kHz four signals coming from the PSL lab:

  297   Wed Feb 8 17:06:11 2017 Gabriele, LarryElectronicsConfigurationPrivate networkThis morning Larry set up a network switch
to create a local network for the power strip
and the two Newport picomotor controllers.
  299   Thu Feb 9 09:10:17 2017 Gabriele, LarryElectronicsConfigurationPrivate networkI reconfigured the powerstrip and the two
Newport controllers to use static IP address
in the new 10.10.10.X network, using the
  384   Mon Jul 31 13:21:37 2017 Gabriele, RosalieGeneralMeasurementsS1600520 S1600521 S1600523 S16005242017-07-31

1:20pm in

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

in chamber

S1600519 in CR1
in CR2

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

in chamber

S1600553 in CR1
in CR2
S1600555 in CR3
  390   Thu Aug 3 11:55:18 2017 Gabriele, RosalieGeneralMeasurementsS1600520 S1600521 S1600523 S16005242017-08-03

in chamber

S1600520 in CR1
in CR2
S1600523 in CR3
  391   Fri Aug 4 14:15:16 2017 Gabriele, RosalieGeneralMeasurementsS1600535, S1600536, S1600537, S16005382017-08-04

2:04pm in

S1600535 in CR1
in CR2
S1600537 in CR3
  405   Thu Aug 10 13:36:08 2017 Gabriele, ZachMechanicsConfigurationESD moved closer to disk in CR0We first measured the distance of the ESD
from the disk in the test chamber (CR0).
We had to remove the retaining ring to have
  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

  510   Tue Apr 3 16:12:15 2018 Liyuan Zhang, Gabriele GeneralMeasurementsS1600541, S1600542, S1600545, S16005462018-04-03

4:12pm in

S1600541 in CR1
in CR2
S1600545 in CR3
  521   Fri Apr 20 16:50:41 2018 Liyuan Zhang, Gabriele VajenteGeneralMeasurementsS1600577 S1600580 S1600582 S1600585 2018-04-20

3:10pm in

S1600577 in CR1
in CR2
S1600582 in CR3
  522   Mon Apr 23 08:28:19 2018 Liyuan Zhang, Gabriele VajenteGeneralMeasurementsS1600577 S1600580 S1600582 S1600585 There was no problem with either the gauges
nor the pressure. The IGM took a long time
to go on, but finally all pressures looked
  826   Tue Jan 14 10:10:25 2020 Seth LinkerGeneralMeasurementsS2000089, S2000090, S2000091, S20000922020-01-14

10:10 am
in chamber

S2000089 in CR1
in CR2
S2000091 in CR3
  828   Fri Jan 17 09:16:45 2020 Seth LinkerGeneralMeasurementsS2000093, S20000942020-01-17

9:16 am
in chamber

S2000093 in CR1
in CR2

9:17 am
  351   Thu Jun 22 13:16:37 2017 ZachElectronicsModelingBeginning with COMSOL2017-06-21

4:30 pm-
Installed COMSOL, began modeling current
ESD by creating parameters and the first
  352   Thu Jun 22 15:37:20 2017 ZachElectronicsModelingBeginning modeling2017-06-22

the geometry of the ESD by creating blocks
and joining them with Unions. I then created
  353   Fri Jun 23 12:02:12 2017 ZachElectronicsModelingPlots2017-06-23

I created
plots of the E field and potential from my
rough model of the ESD. This model has 1mm
  356   Tue Jun 27 14:17:47 2017 ZachElectronicsModelingFurther plots and improving models2017-06-27

I built
a new model of the ESD to determine whether
or not the spikes in the electric field at
  359   Thu Jun 29 16:40:41 2017 ZachElectronicsModelingAccurate model and force profile2017-06-29

I created
a much more accurate model of the current
ESD setup from the technical drawings. My
  360   Fri Jun 30 11:02:18 2017 ZachElectronicsModelingMatching Forces2017-06-30

I adjusted
the plot parameters slightly so that it only
showed the actual force profile on the sample
  361   Fri Jun 30 16:27:56 2017 ZachElectronicsModelingDouble Checking Model2017-06-30

In order
to confirm the accuracy of my model I checked
some easily computable quantities between
  363   Wed Jul 5 12:01:51 2017 ZachElectronicsModelingForce plots-Correct plots, force issue2017-07-05

I sorted
out my mathematical lapse in logic and computed
the correct force profiles in the perpendicular
  364   Wed Jul 5 16:40:51 2017 ZachElectronicsModelingForce disparity-improvement2017-07-05

In order
to improve my data I shrunk the region of
the finer meshing slightly and made the mesh
  365   Thu Jul 6 12:08:35 2017 ZachElectronicsModelingChecking physical parameters2017-07-06

I compared
the electric field and the polarization to
make sure that those calculations made sense.
  366   Thu Jul 6 12:48:54 2017 ZachElectronicsModelingResolving the factor of two2017-07-06

I resolved the factor
of two from Griffiths' discussion of
dipoles in non-uniform electric fields. The
  367   Wed Jul 12 15:08:59 2017 ZachElectronicsModelingModel of actuator and sample2017-07-12

I am attaching
the first fully functioning model of the
actuator and sample. I cleared both meshes
  368   Fri Jul 14 16:43:24 2017 ZachElectronicsModelingForce profile matlab script2017-07-14

I have completed
a rough, but functioning script that calculates
the modal force profiles. The force values
  371   Thu Jul 20 11:37:01 2017 ZachElectronicsModelingMatlab Script2017-07-20

I believe
my MATLAB script successfully calculates
the force distribution into each of the modes
  375   Mon Jul 24 09:13:45 2017 ZachElectronicsModelingParametric Sweep2017-07-24

I wrote
a MATLAB script that is capable of sweeping
parameters, the code is attached. The next
  378   Tue Jul 25 13:38:30 2017 ZachElectronicsModelingParametric Sweep of ESD gap2017-07-25

I completed
a short sweep of the gap between the drive
and the sample, between .5 and 1 mm in .1
  379   Wed Jul 26 09:27:40 2017 ZachElectronicsModelingSweeping the space between ESD and sample2017-07-26

I ran a
sweep of the gap between the ESD and the
sample, first from .5 mm to 1 mm. That sweep
  381   Wed Jul 26 21:22:50 2017 ZachElectronicsModelingParametric Sweep Results2017-07-26

I resolved
the major bugs in the parametric sweep scripts
and ran low resolution sweeps of the gap
  382   Thu Jul 27 13:37:31 2017 ZachElectronicsModelingCorrected sample gap sweep2017-07-27

I resolved
a couple more data processing bugs and calculated
a sweep of the ESD-Sample gap from a distance
  383   Thu Jul 27 16:56:03 2017 ZachElectronicsModelingOffset Sweep2017-07-27

I ran a
low resolution sweep of the offset in the
arms of the ESD, the space between the end
  386   Tue Aug 1 16:10:42 2017 ZachElectronicsModelingImproved Gap Sweep2017-08-01

I completed
an improved sweep of the gap between the
ESD arms. I resolved some code issues, since
  388   Wed Aug 2 13:47:47 2017 ZachElectronicsModelingArm width Sweep2017-08-02

I ran a
sweep of the width of the ESD arms. There
appears to be a linear relationship across
  389   Wed Aug 2 15:40:00 2017 ZachElectronicsModelingParameter diagramI am posting a diagram of the geometric
parameters that I swept. The only one not
included is the vertical space between the
  394   Mon Aug 7 13:19:48 2017 ZachElectronicsModelingNormalized data2017-08-07

I included
the modal mass factors in the code and renormalized
my data. The normalization has a noticeable
  398   Tue Aug 8 16:20:24 2017 ZachElectronicsModelingRotated ESD 2017-08-08

I rotated
the ESD and calculated it's modal projections
by rotating the data array that MATLAB extracts
  399   Wed Aug 9 12:10:47 2017 ZachElectronicsModelingPreliminary improvement from ESD optimization2017-08-09

I created
a plot of the ratio of the force in the optimized
design to the force in the original design.
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