ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
10185
|
Fri Jul 11 15:29:26 2014 |
Harry | Update | General | Telescope With Collimator | I used a la mode to make a design
for the coupling telescope with a 3.3um target
waist, that included the collimator in the |
 |
10204
|
Tue Jul 15 18:26:40 2014 |
Harry | Update | General | Beam Waist, Telescope, and Fiber Coupling | Goal
To design an optical setup (telescope
/ lens) to couple 1064nm NPRO light into |
  |
10205
|
Tue Jul 15 18:39:04 2014 |
Harry | Update | General | Weekly Plan (7.16.14) | The Past Week
Attempted to design coupling telescope, |
|
10213
|
Wed Jul 16 01:54:25 2014 |
Nichin | Update | General | Work plan for next week | 1) Debugging transimpedance calculations
in the PDFR
Requires |
|
10215
|
Wed Jul 16 07:51:52 2014 |
Akhil | Update | General | Weekly Update | Work
Done:
Solved all the timing |
|
10218
|
Wed Jul 16 17:34:11 2014 |
Harry | Update | General | Fiber Coupled | Purpose
To couple the spare NPRO into our
Panda PM980 fibers, in order to carry out |
|
10230
|
Thu Jul 17 17:08:58 2014 |
Harry | Update | General | 1X2 Rack Changes | Purpose
Steve and I moved some things around |
|
10233
|
Thu Jul 17 21:01:28 2014 |
Manasa | Update | General | 1X2 Rack Changes |
|
|
10234
|
Thu Jul 17 22:08:14 2014 |
Koji | Update | General | 1X2 Rack Changes | It sounds like the work was done carefully.
Even so, Jenne or Manasa have to run the
ALS (X and Y) to check if they are still |
|
10240
|
Sat Jul 19 01:59:34 2014 |
Harry | Update | General | Fiber Mode Measurement | Purpose
We wanted to measure the mode coming
out of the fibers, so we can later couple |
  |
10244
|
Mon Jul 21 10:30:38 2014 |
Harry | Update | General | Fiber Mode Measurement | Purpose
The idea was to measure the profile
of the light coming out of the fiber, so |
  |
10249
|
Mon Jul 21 18:08:19 2014 |
Harry | Update | General | Fiber Mode Measurement |
|
|
10255
|
Tue Jul 22 16:26:04 2014 |
Harry | Update | General | Fiber Mode Measurement | I repeated this process once more, this
time using the computer controlled stage
that the beam profiler is designed to be |
 |
10256
|
Tue Jul 22 17:45:11 2014 |
Harry | Update | General | Weekly Update | The Past Week
I spent the past week coupling NPRO |
|
10257
|
Tue Jul 22 23:10:12 2014 |
Akhil | Update | General | Weekly Update | Work
Done |
|
10260
|
Wed Jul 23 10:40:23 2014 |
Nichin | Update | General | Weekly Update | To do:
Measure and calibrate out attenuation
and phase changes due to RF cables in the |
|
10264
|
Wed Jul 23 17:54:51 2014 |
Harry | Update | General | Coupling Improvements plus PER Measurement Setup | Purpose
We wanted to improve the coupling
into the fibers, because it's very rarely |
|
10268
|
Thu Jul 24 09:18:15 2014 |
Steve | Update | General | four days | |
|
10271
|
Thu Jul 24 17:37:19 2014 |
Harry | Update | General | Coupling Improvements plus PER Measurement Setup |
|
|
10272
|
Thu Jul 24 19:28:43 2014 |
Akhil | Update | General | Thermal Actuator Transfer Functions | As a part of temperature actuator
characterization, today Eric Q and I made
some measurements for the open loop TF of |
 |
10273
|
Fri Jul 25 17:28:31 2014 |
Harry | Update | General | FOL Box and PER Update | Purpose
We're putting together a box to go
into the 1X2 rack, to facilitate the frequency |
|
10274
|
Sat Jul 26 10:12:19 2014 |
Akhil | Update | General | Data Acquisition from FC into EPICS Channels | I succeeded in creating a new channel
access server hosted on domenica ( R Pi)
for continuous data acquisition from the |
|
10275
|
Sat Jul 26 13:10:14 2014 |
Akhil | Update | General | Thermal Actuator Transfer Functions | Koji said that the method we used for X-arm
thermal actuator TF measurement was not correct
and suggested us to make measurements separately |
|
10276
|
Sat Jul 26 13:38:34 2014 |
Jamie | Update | General | Data Acquisition from FC into EPICS Channels |
|
|
10277
|
Sat Jul 26 14:35:28 2014 |
Akhil | Update | General | Data Acquisition from FC into EPICS Channels |
|
|
10281
|
Mon Jul 28 16:34:02 2014 |
Akhil | Update | General | Calibration of measured Thermal Actuator TFs | To calibrate the measured TFs and
characterize the thermal actuator for the
FOL loop, we [ Me, Eric Q, Koji ] made the |
|
10282
|
Mon Jul 28 17:25:32 2014 |
Harry | Update | General | Fiber Mode With Collimators | Purpose
We want a measurement of the fiber
modes at either end, with the collimators, |
  |
10283
|
Mon Jul 28 17:53:00 2014 |
Akhil | Update | General | Work plan for the Upcoming weeks- FOL Project | [Akhil, Harry]
Work
Completed |
|
10287
|
Tue Jul 29 18:52:42 2014 |
Harry | Update | General | PSL and AUX Coupling Waist Measurement | //edit Manasa// Harry will update
this elog with before/after pictures of the
table and power of the 1064nm rejected beam |
9x |
10289
|
Tue Jul 29 19:00:40 2014 |
Harry | Update | General | Weekly Plan (7.29.14) | The Past Week
In the past week, I have improved
the coupling in the fiber testing setup on |
|
10297
|
Wed Jul 30 11:15:44 2014 |
Akhil | Update | General | Weekly Update | Plan for the week:
PID loop design and testing
with the Green laser beat note by actuating |
|
10298
|
Wed Jul 30 15:33:48 2014 |
Akhil | Summary | General | Calibrated Thermal Actuator TFs | The goal of the measurements we made
( my previous 3 elogs) was to characterize
the laser frequency thermal actuator that |
   |
10299
|
Wed Jul 30 18:09:08 2014 |
Harry | Update | General | AUX and PSL Coupling Telescopes | Purpose
These telescopes will be used to
mode match//couple the dumped SHG light from |
    |
10301
|
Wed Jul 30 23:12:05 2014 |
Koji | Update | General | IFO patrol | - The cable for the beat note was disconnected
from the frequency counter and reconnected
to the spectrum analyzer. |
|
10308
|
Thu Jul 31 15:25:51 2014 |
Harry | Update | General | PolarizationExtinction Ratio of Fibers | Purpose
We wanted to measure the PER of the
polarization maintaining fibers, so we could |
 |
10312
|
Thu Jul 31 21:59:25 2014 |
Koji | Bureaucracy | General | Ants | Don't leave your
food on tables and desks!
Also I put the souvenir chocolates |
|
10318
|
Fri Aug 1 03:49:26 2014 |
Koji | Summary | General | Koji - to do | - Put the circuit diagram of the
sum amp on/in the circuit enclosure and associate
it with an elog [done]. |
|
10325
|
Fri Aug 1 22:56:27 2014 |
Koji | Update | General | Beam lost in the chamber??? | I was investigating several issues on the
IFO. As many of you noticed and not elogged,
ITMX had frequent kicking without its oplev |
|
10326
|
Sun Aug 3 17:19:32 2014 |
ericq | Update | General | Recovery efforts | [ericq, Jenne]
We both happened to come by today
to fix things up. |
|
10327
|
Sun Aug 3 23:47:56 2014 |
Koji | Update | General | Recovery efforts | It's great that you guys found the beam.
Yes, ITMX kick and lost communication |
|
10329
|
Mon Aug 4 17:30:00 2014 |
ericq | Update | General | Chronic Suspension Problems | TRX and TRY communication were recovered
by doing a simultaneous reboot of all of
the frontends. |
|
10330
|
Mon Aug 4 18:25:46 2014 |
Jenne | Update | General | Chronic Suspension Problems | Q is working on fixing the "save offsets"
script for the ASS, because that has lost
me my alignment two more times in the last |
|
10333
|
Tue Aug 5 19:05:41 2014 |
Akhil | Update | General | Beat Note Testing on EPICS Channels | |
|
10334
|
Tue Aug 5 19:20:05 2014 |
Akhil | Update | General | PID loop Design for beat note stabilization | Today I and EricQ went inside the
lab and set up the cables running from the
a DAC channel into PZT input so that |
|
10336
|
Wed Aug 6 10:10:45 2014 |
Harry | Update | General | Weekly Plan 8.6.14 | Last Week
Took first round of PER measurements |
|
10347
|
Thu Aug 7 14:50:43 2014 |
Harry | Update | General | PER Measurement | Purpose
I wanted to do a more robust measurement
of PER of PM fibers for FOL, so I thought |
    |
10349
|
Thu Aug 7 17:09:53 2014 |
Harry | Update | General | AUX Coupling In Progress | I'm currently in the process of coupling
dumped SHG light from the Y arm end table
into fibers for FOL. |
|
10353
|
Fri Aug 8 14:42:41 2014 |
Akhil | Update | General | PID loop Design for beat note stabilization | The attached in a zip file are the
Simulink feedback loop models for the FOL
for both X and Y ends. The controller PID |
|
10357
|
Fri Aug 8 19:42:59 2014 |
Jenne | Metaphysics | General | kitchen sink flooding | When I got back to the lab, there
was enough water that it was seeping under
the wall, and visible outside. Physical plant |
|
10358
|
Fri Aug 8 20:22:12 2014 |
Jenne | Metaphysics | General | kitchen sink water off |
|
|