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ID Date Author Typedown Category Subject Text Attachments
  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
 Fine_sample_gap.jpgFine_sample_gap.jpgfine_arm_gap.jpgfine_arm_gap.jpg 
  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
 Offset.jpgOffset.jpg 
  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
 Better.jpgmode_14.jpgmode_19.jpgmode_25.jpg 
  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
 Arm_width_fine.jpgmode_25.jpg 
  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
 ESD_w_param.png 
  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
 Arm_gap.pdfArm_width.pdfOffset.pdfSample_Gap.pdf 
  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
 ESD.pdfRotated.pdfresonantmodes.pdf 
  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.
 Ratio.jpgRatio.jpgo_gap.jpgOriginal.jpgOptimized.jpg 
  400   Wed Aug 9 15:57:28 2017 ZachElectronicsModelingTriangular Geometry2017-08-09


I compared
the triangular geometry to the original geometry
and the excitation was only improved
 tratio.jpg 
  401   Wed Aug 9 17:07:57 2017 ZacharyElectronicsModelingOptimization Summary2017-08-09



p.p1 {margin: 0.0px 0.0px
0.0px 0.0px; font: 11.0px 'Helvetica Neue';
 6x 
  402   Thu Aug 10 10:47:54 2017 ZachElectronicsModelingGeometry Ratios2017-08-10


The attached
plots compare the new and old geometries
with .5 mm and 1 mm sample gaps. They are
 Optimization_plot_lin.pdfOptimization_plot_log.pdf 
  407   Tue Aug 15 00:09:01 2017 ZachElectronicsModelingESD Improvements2017-08-14


I did my
best to increase the excitation in the higher
order modes. By making the ESD narrower (a
 10x 
  409   Tue Aug 15 16:43:58 2017 ZachElectronicsModelingUnchanged Mode Insight2017-08-15


It appears
to me that the major factor limiting the
improvement of the modes that either remain
 Double.pdfThin.pdfOriginal.pdf 
  411   Wed Aug 16 10:04:24 2017 ZachElectronicsModelingESD along edge2017-08-16


I placed
created a very narrow ESD placed along the
edge of the sample. The thought behind this
 edge.jpgoverlay15.jpgoverlay15.jpg 
  412   Wed Aug 16 11:36:13 2017 ZachElectronicsModelingMiddle ESD 2017-08-16


I created
a model with a drive offset in the middle.
It improved one of the modes by a factor
 middle.jpgoverlay23.jpgoverlay23.jpg 
  414   Wed Aug 16 16:05:09 2017 ZachElectronicsModelingTwo ESD First test2017-08-16


I created
a model with two ESD's, essentially a
combination of my previous two attempts with
 Double_Modes.jpgTwo.jpgTwoESD_geo.png 
  415   Thu Aug 17 14:19:04 2017 ZachElectronicsModelingTwo ESD Optimization2017-08-17


I ran a
sweep of the position of the middle ESD to
determine the optimal arrangement. From the
 17x 
  416   Thu Aug 17 23:34:51 2017 ZachElectronicsModelingOptimized ESD Drawing2017-08-17


I made a
drawing of the Optimal ESD design. The bottom
combs (right hand in the rotated image) are
 OptimizedESD.pdf 
  417   Fri Aug 18 10:50:53 2017 ZachElectronicsModelingESD's with positive voltage2017-08-18


With both
electrodes driven at a positive voltage,
the results are still an improvement over
 two_positive.jpg 
  419   Fri Aug 18 14:15:47 2017 ZachElectronicsModelingSame Voltage ESD Sweep2017-08-18


I ran a
sweep of the central position in the two
ESD setup with both set at the same voltage.
 two_positive_ratio_sweep.pdf-2mm_two_positive.jpg3mm_two_positive.jpg-2mm_two_positive.jpg 
  420   Fri Aug 18 15:10:23 2017 Zach, GabrieleElectronicsModelingESD prototype2017-08-18


We created
a prototype of PCB for the ESD design. Unfortunately
the orientation of the two combs was flipped,
 Crime_ESD_Zach_prototype.pdf 
  421   Wed Aug 23 14:11:13 2017 Zach, GabrieleElectronicsMeasurementsInstalling ESD Prototype2017-08-23


Installed
ESD Prototype design by taping it to the
older design, we then lowered the mount until
 image1.JPGimage2.JPG 
  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:


X3:TST-BEAT_OUT_DQ: beat
  
  67   Thu Jul 28 13:58:48 2016 Alena, GabrieleCleanDaily ProgressThe old chamber is now being cleaned and bakedCleaned the chamber in the washing machine
at 40m and started 48 baking at 120 C
 20160728_092350.jpg 
  86   Tue Aug 16 11:53:30 2016 Alena, GabrieleCleanDaily ProgressClean room progressSome progress on the cleam room: bar fixed
to the wall, some more structure built, filters
in place. We had to (literally) work around
 2016-08-16_10.25.05.jpg 
  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
 2016-08-17_15.29.40.jpg2016-08-17_15.30.05.jpg 
  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.
 2016-08-18_18.07.29.jpg2016-08-18_18.07.42.jpg 
  140   Thu Oct 20 14:38:24 2016 GabrieleCleanDaily ProgressCleaning of S1600433 and S1600438Samples #433 (annealed and cleaned) and
#438 (as received from Mark Optics) are now
with GariLynn for deep cleaning.
  
  689   Mon May 13 18:37:47 2019 aaronCleanGeneralClean room gearMon May 13 18:37:37 2019

Entered CRIME lab to borrow 4x
hair nets and face masks. Can you 
  
  696   Mon May 20 10:35:45 2019 aaronCleanGeneralClean room gearAaron,

There is a buy list of approved
clean room supplies posted here https://dcc.ligo.org/LIGO-E1300399.
  
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