| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
8852
|
Mon Jul 15 17:20:43 2013 |
Jenne | Configuration | endtable upgrade | DAC at 1Y4- Power Spectrum -with the right units | Those 'peaks' for the oscillations seem
ridiculously broad. I think you should
look again, really quickly, with smaller |
|
|
8853
|
Mon Jul 15 17:59:31 2013 |
gautam | Configuration | endtable upgrade | DAC at 1Y4- Power Spectrum -6.4kHz bandwidth |
|
|
|
8857
|
Tue Jul 16 14:51:09 2013 |
gautam | Configuration | endtable upgrade | AI Board-D000186-Modified notches | I tried shifting the notch frequencies
on the D000186-revision D board given to
me by Koji. The existing notches were at |
|
|
8873
|
Thu Jul 18 19:09:08 2013 |
gautam | Configuration | endtable upgrade | QPD Calibration for PZT Calibration | Summary
I have been working on setting up
a QPD which can eventually be used to calibrate |
|
|
8874
|
Thu Jul 18 20:20:52 2013 |
gautam | Configuration | endtable upgrade | First mirror glued to PZT and mounted in modified mounts |
Yesterday,
I mounted the first PZT in one of the modified |
|
|
8875
|
Thu Jul 18 21:12:58 2013 |
gautam | Configuration | endtable upgrade | AI Board-D000186-All channels modified |
I carried some further modifications
and tests to the AI Board. Details and observations |
|
|
8877
|
Thu Jul 18 23:34:40 2013 |
gautam | Configuration | endtable upgrade | Coarse adjustment of PZT axes orientation in mount | I have
managed to orient the PZT in the mount such
that its axes are approximately aligned with |
|
|
8883
|
Fri Jul 19 22:51:40 2013 |
gautam | Configuration | endtable upgrade | Second mirror glued to PZT and mounted |
I |
|
|
8884
|
Fri Jul 19 23:35:31 2013 |
gautam | Configuration | endtable upgrade | Preliminary Calibration of PZT | I recalibrated
the QPD today as I had shifted its position
a little. I then identified the linear range |
|
|
8892
|
Mon Jul 22 17:17:30 2013 |
annalisa | Update | endtable upgrade | End table picture | |
|
|
8896
|
Tue Jul 23 00:51:46 2013 |
Koji | Update | endtable upgrade | End table picture | The spot on the IPANG QPD was checked.
The spot is higher than the center and South
side of the lens. |
|
|
8910
|
Tue Jul 23 19:37:08 2013 |
Annalisa | Update | endtable upgrade | End table picture |
|
|
|
8912
|
Tue Jul 23 20:41:40 2013 |
gautam | Configuration | endtable upgrade | Full range calibration and installation of PZT-mounted mirrors | Given
that the green beam is to be used as the |
|
|
8930
|
Sun Jul 28 19:39:04 2013 |
Annalisa | Update | endtable upgrade | Picture | Yend table picture updated on the wiki
page |
|
|
8932
|
Mon Jul 29 13:39:25 2013 |
gautam | Configuration | endtable upgrade | PZT Driver Board-further changes |
I have |
|
|
8935
|
Mon Jul 29 21:57:45 2013 |
gautam | Configuration | endtable upgrade | Hardware installed at 1X9 | The following hardware |
|
|
8942
|
Tue Jul 30 19:40:47 2013 |
gautam | Configuration | endtable upgrade | DAC-PZT Driver Board Output Signal Chain Tested |
[Alex, Gautam]
|
|
|
8943
|
Tue Jul 30 19:44:05 2013 |
gautam | Configuration | endtable upgrade | Second mirror glued to PZT and mounted |
I have |
|
|
8967
|
Mon Aug 5 18:48:44 2013 |
gautam | Configuration | endtable upgrade | Full range calibration of PZT mounted mirrors for Y-endtable | I
had prepared two more PZT mounted mirrors
for the Y-end some time back. These are: |
|
|
9451
|
Mon Dec 9 11:44:08 2013 |
Steve | Update | endtable upgrade | ETMY optable got new beam dump | Aluminum shield replaced by razor beam
dump. |
|
|
9941
|
Mon May 12 14:42:25 2014 |
steve | Update | endtable upgrade | optical table enclosure wall proposal and table at ETMY |
|
|
|
11591
|
Fri Sep 11 10:56:47 2015 |
Steve | Update | endtable upgrade | ETMY optical table feedthrough | The ETMY enclosure feedthrough - north
is installed. The sealing material is hard
to work with. |
|
|
11600
|
Tue Sep 15 16:49:08 2015 |
Steve | Update | endtable upgrade | ETMY optical table feedthrough | ETMY optical table enclosure feedthrough-
south is in. Now it is time to see how air
tightness increases performance. |
|
|
11608
|
Thu Sep 17 02:22:53 2015 |
Steve | Update | endtable upgrade | ETMY optical table feedthrough | I doubt we'll see any effect until
we carefully seal the holes. If there's
1 hole in your boat it still sinks. |
|
|
11897
|
Tue Dec 22 16:39:42 2015 |
Steve | Update | endtable upgrade | ETMY optical table enclosure | I think there should be a scientifically
based aveluation of the ETMY enclosure so
we can make the ETMX better. |
|
|
12029
|
Thu Mar 10 16:29:32 2016 |
gautam | Update | endtable upgrade | Inventory check | I did a quick sweep of the lab to find
out what hardware has already been acquired
for the X-end table upgrade. The attached |
|
|
12030
|
Thu Mar 10 16:32:45 2016 |
rana | Update | endtable upgrade | Inventory check | Its not a good idea to use green mounts
with green lasers. Steve should be able to
get another copy of the EY doubler mount |
|
|
12033
|
Mon Mar 14 22:42:23 2016 |
gautam | Update | endtable upgrade | Inventory check |
|
|
|
12051
|
Mon Mar 28 10:43:18 2016 |
Steve | Update | endtable upgrade | ETMX 4'x2' optical table pictures |
|
|
|
12056
|
Wed Mar 30 17:38:52 2016 |
gautam | Update | endtable upgrade | X end table proposed layout | Attachment 1: This
is a photo of the current X end table optical
layout with the beampaths of the various |
|
|
12057
|
Thu Mar 31 09:38:41 2016 |
Steve | Update | endtable upgrade | Y end 4x3 existing layout | Beam colors: 1064 nm red, 514 nm green
and 633 nm yellow.
There should be room for lens in |
|
|
12058
|
Thu Mar 31 19:49:31 2016 |
gautam | Update | endtable upgrade | proposed layout v2 | The major changes from the previous layout:
I've depicted the Green
reflected beam path more accurately - I approximately measured |
|
|
12060
|
Mon Apr 4 10:59:12 2016 |
gautam | Update | endtable upgrade | proposed layout v3 | I realized I had overlooked an important
constraint in the layout, which is that the
enclosure will have two supports that occupy |
|
|
12061
|
Mon Apr 4 15:04:14 2016 |
gautam | Update | endtable upgrade | COMPONENT REMOVAL |
I'm
planning to start removing components from |
|
|
12063
|
Tue Apr 5 11:42:17 2016 |
gaericqutam | Update | endtable upgrade | TABLE REMOVAL | There is currently no table at
the X end!
We have moved the vast majority |
|
|
12065
|
Wed Apr 6 17:52:21 2016 |
gautam | Update | endtable upgrade | First contact cleaning commenced | I've begun cleaning the optics that
will eventually go back onto the newly installed
X-endtable. We decided that First Contact |
|
|
12066
|
Thu Apr 7 12:51:24 2016 |
gautam | Update | endtable upgrade | Beam height differences | Steve has finished installing the enclosure
on the new endtable. So Eric and I decided
to try and lock the X arm and measure the |
|
|
12067
|
Thu Apr 7 14:30:58 2016 |
Steve | Update | endtable upgrade | ETMX table height |
|
|
|
12068
|
Fri Apr 8 09:13:20 2016 |
Steve | Update | endtable upgrade | ETMX-T beam height | X arm resonating after alignment, beam
height on ETMX optical table ~4.75"
|
|
|
12073
|
Wed Apr 13 00:56:07 2016 |
gautam | Update | endtable upgrade | X endtable repopulation | Over the last couple of days, I've
been working on restoring the optical layout
on the X-endtable. Some notes about the status |
|
|
12074
|
Wed Apr 13 11:00:28 2016 |
Steve | Update | endtable upgrade | X endtable repopulation | ETMX optical table is grounded to ETMX
chamber through 1 Mohms
The doubling oven temp controller |
|
|
12075
|
Wed Apr 13 18:25:07 2016 |
gautam | Update | endtable upgrade | Lightwave health check | [Koji,gautam]
Lightwave NPRO information:
Model: 126-1064-700 |
|
|
12079
|
Fri Apr 15 18:38:12 2016 |
gautam | Update | endtable upgrade | Lightwave health check - NO IMPROVEMENT | I re-measured the power levels today.
We have ~205mW out of the NPRO,
and ~190mW after the Faraday. It doesn't |
|
|
12083
|
Tue Apr 19 18:37:29 2016 |
gautam | Update | endtable upgrade | Laser swap + optical layout | Summary of work done over the last
two days
Lightwave NPRO |
|
|
12085
|
Thu Apr 21 14:25:52 2016 |
gautam | Update | endtable upgrade | Green light recovered | I've made progress on the new layout
up to the doubling oven. After doing the
coarse alignment with the diode current to |
|
|
12089
|
Tue Apr 26 15:22:35 2016 |
Steve | Update | endtable upgrade | Cleaning ETMX vacuum dirty window | Gautom is progressing with the layout nicely.
The X-arm transmission window have not seen
cleaning for decades. This should be the |
|
|
12090
|
Tue Apr 26 23:19:42 2016 |
gautam | Update | endtable upgrade | Green aligned to arm - high order mode flashes seen | Attachment #1
Layout as of today. Most of the
green path is done. The Green REFL PD + PZT |
|
|
12094
|
Wed Apr 27 15:04:47 2016 |
Steve | Update | endtable upgrade | Cleaning ETMX vacuum dirty window | It looks very promising.
|
|
|
12095
|
Thu Apr 28 00:41:08 2016 |
gautam | Update | endtable upgrade | more progress - Transmon PD installed | The IR Transmon system is almost completely
laid out, only the QPD remains to be installed.
Some notes: |
|
|
12099
|
Fri Apr 29 00:55:46 2016 |
gautam | Update | endtable upgrade | green PDH locked to Xarm | Using the modulation frequency suggested
here,
I hooked up the PDH setup at the X-end and |
|