| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
13872
|
Mon May 21 14:17:28 2018 |
Kira | Update | PEM | test setup with seismometer | I have attached the graph for the seismometer
temperature fluctuations over 3 days. As
we can see, there is a noticeable fluctuation |
|
|
13877
|
Tue May 22 14:49:03 2018 |
Kira | Update | PEM | test setup with seismometer | It appears that one of the wires was disconnected
overnight or this morning so I wasn't
able to gather data over a full 24 hour period. |
|
|
13882
|
Wed May 23 14:50:33 2018 |
Kira | Update | PEM | test setup with seismometer | This time the test went without issue.
The first attachment is the data for the
past 24 hours and the second attachment is |
|
|
13887
|
Thu May 24 15:18:12 2018 |
Kira | Update | PEM | PID loop restarted | Rana said that it wasn't necessary
to gather more data on the temperature fluctuations
so I have reconnected the heater circuit |
|
|
13888
|
Thu May 24 16:08:12 2018 |
Kira | Update | PEM | parts list | We will need to order a few things for
our final setup.
1U box to place the heater |
|
|
13894
|
Tue May 29 16:22:43 2018 |
Kira | Update | PEM | parts list | I've updated the parts list to be an
excel document and included every single
part we will need. This is ony a first draft |
|
|
13903
|
Thu May 31 15:48:16 2018 |
Kira | Update | PEM | running PID script with seismometer | I have attached the result of running the
PID script on the seismometer with the can
on. The daily fluctuations are no more than |
|
|
13922
|
Wed Jun 6 15:12:29 2018 |
Kira | Update | PEM | parts from lab | Got this 1U box from the Y arm that we
could potentially use (attachment 1). It
doesn't have handles on the front but |
|
|
13979
|
Mon Jun 18 11:12:23 2018 |
Kira | Summary | PEM | finishing up work at the lab | Since I am finishing my job at the lab,
I have stored all my electronics in a box
(attachment 1) and placed it under the table |
|
|
1326
|
Thu Feb 19 22:40:33 2009 |
Kiwamu | Update | Electronics | PSL angle QPD | I checked a broken QPD, which was placed
for PSL angle monitor, and finally I cocluded
one segment of the quadrant diode was |
|
|
1363
|
Fri Mar 6 01:04:49 2009 |
Kiwamu IZUMI | Configuration | IOO | !! lock-in amp disconnected !! | The power supply of a lock-in amp, which
is on the Y-arm side of PSL clean room, was
pulled out by my mistake. |
|
|
3540
|
Tue Sep 7 23:34:15 2010 |
Kiwamu, Sanjit | Configuration | Computers | e-log | e-log was repeatedly hanging and several
attempts to start the daemon failed.
problem was solved after clearing |
|
|
10682
|
Thu Nov 6 14:41:49 2014 |
Koij | Update | LSC | 3F RFPD RF spectra | That's not what I'm asking.
Also
additional cables are left connected to the |
|
|
556
|
Tue Jun 24 10:24:43 2008 |
Koji | Update | General | Abs. Len. Meas. ~ Cavity Swing Measurement (2) | At the entry 555, Alberto reported the results
of the cavity length measurement using cavity
sweeping.
|
|
|
561
|
Wed Jun 25 00:35:40 2008 |
Koji | Summary | General | Optical Layout on the AP table | I have visited the AP table in order to investigate
where we are going to put the optical setup
for the abs. length meas.
|
|
|
567
|
Wed Jun 25 13:38:22 2008 |
Koji | Update | General | Abs. Len. Meas. ~ Placement of the 700mW NPRO on the AP table | This morning I have put the 700mW NPRO on
the AP table for the abs length measurement.
|
|
|
590
|
Sun Jun 29 02:33:28 2008 |
Koji | Update | General | Abs. Len. Meas. ~ Optical setup (I) | I have constructed the beam injection optics
for the abs length measurement.
|
|
|
599
|
Mon Jun 30 05:33:38 2008 |
Koji | Update | General | Abs. Len. Meas. ~ Optical setup (II) | o The position of the iris was adjusted so
as not to disturub the beam for OMCR CCD.
|
|
|
619
|
Tue Jul 1 21:54:05 2008 |
Koji | Update | General | Re: Abs. Length Meas. setup | I tried to look for the beating in the signal
from the PD but I couldn't find. I had the
temperature of the laser initially set to |
|
|
628
|
Thu Jul 3 11:53:30 2008 |
Koji | Update | General | Status of the alignment of the NPRO beam for the Absolute Length Measurement | The method itself looked fine.
Use of the one arm configuration will make |
|
|
635
|
Thu Jul 3 22:54:45 2008 |
Koji | Update | General | Beats of the two lasers in the absolute length measurement observed | Great! Conguraturation! I wish if I could
see it! It's nice if you can put the photo
or anything of the RF spectrum analyzer.
|
|
|
638
|
Mon Jul 7 13:06:38 2008 |
Koji | Update | General | Beats of the two lasers in the absolute length measurement observed | One may need an RF filter after the mixer.
I expect the SR560 does work for this purpose.
If it does not, a passive LPF can be used.
|
|
|
666
|
Mon Jul 14 10:57:00 2008 |
Koji | Frogs | Environment | Someone at 40M sent LHO water of life | Someone at the 40m sent Mike@LHO a pound of
peets coffee with the name of Koji Arai.
It was a good surprise! Thanks, we will enjoy |
|
|
730
|
Thu Jul 24 01:27:00 2008 |
Koji | Update | LSC | Arm cavity g-factor measurement | [quote]I locked the Y-arm and mis-aligned
the end mirror in Yaw until the transmission
power gets half.
|
|
|
738
|
Fri Jul 25 10:48:13 2008 |
Koji | Update | General | Abs. Len. Meas. ~ Realignment / beating / PLL trial | Alberto and Koji
o We worked for the abs length measurement |
|
|
748
|
Mon Jul 28 15:54:04 2008 |
Koji | Update | General | Abs. Len. Meas. ~ More on the beat / the PLL setup | Alberto and Koji,
Last Friday evening, Koji found that the |
|
|
753
|
Tue Jul 29 09:12:43 2008 |
Koji | Configuration | IOO | MC length measurement | I found that the prev modulation freq had
been determined with a same kind of measurement
by Osamu, which also looked accurate.
|
|
|
759
|
Tue Jul 29 19:53:19 2008 |
Koji | Update | SUS | PRM photos from the south window | Steve and Koji
We took some photos of PRM from the south |
|
|
768
|
Wed Jul 30 13:14:03 2008 |
Koji | Summary | IOO | History of the MC abs length | I was notified by Rob and Rana that there
were many measurements of the MC abs length
(i.e. modulation
|
|
|
774
|
Thu Jul 31 10:24:32 2008 |
Koji | Update | General | IFO status | Last night I used the Y-arm for the abs length
measurement. The Yarm was aligned by the
script.
|
|
|
776
|
Thu Jul 31 11:19:30 2008 |
Koji | Update | General | Abs. Len. Meas. ~ Resonance search trial | Last night, I tried to find the resonance
of Yarm by sweeping the frequency of the
injection beam.
|
|
|
782
|
Sat Aug 2 12:53:43 2008 |
Koji | Update | General | Abs. Len. Meas. ~ New PLL at the PSL table | [B]Report of the work last night:[/B]
The new heterodyne interferometer on the
PSL table was built.
|
|
|
783
|
Sat Aug 2 13:07:23 2008 |
Koji | Configuration | General | The AP table cleaned | During the construction of the independent
PLL I cleaned up some of the unused optics
from the AP table. Essentially this should |
|
|
787
|
Mon Aug 4 00:37:58 2008 |
Koji | Update | General | Abs. Len. Meas. ~ RF PD at the Y end / Manual frequency scan | [B]Work log on August 2nd[/B]
o Just remind you:
|
|
|
788
|
Mon Aug 4 00:56:07 2008 |
Koji | HowTo | General | Abs. Len. Meas. ~ Auto freq scanner with GPIB | [B]Work log on August 3rd - Part1[/B]
o Yesterday I was too much tired of changing |
|
|
789
|
Mon Aug 4 05:23:57 2008 |
Koji | Update | General | Abs. Len. Meas. ~ Measurement for Y-arm completed | Finally, I have completed the abs length and
g-factor measurements for Y-arm.
[COLOR=green][B]>>>GO FOR THE VENT<<<[/B][/COLOR]
|
|
|
793
|
Mon Aug 4 21:48:24 2008 |
Koji | Update | General | Abs. Len. Meas. ~ Scan for TEM00/01/10 | [B]Work log on August 3rd - Part2[/B]
o I tried to measure the frequency of the |
|
|
794
|
Mon Aug 4 22:31:10 2008 |
Koji | Update | General | Abs. Len. Meas. ~ Simple Test for TEM01/10 split | [B]Work log on August 3rd - Part3[/B]
[B]Question:[/B]
|
|
|
795
|
Tue Aug 5 00:05:57 2008 |
Koji | Update | General | Abs. Len. Meas. ~ IFR2023A calibration | [B]Work log on August 4th[/B]
o IFR2023A (Marconi) was calibrated by the |
|
|
796
|
Tue Aug 5 02:39:55 2008 |
Koji | Configuration | General | Abs. Len. Meas. ~ Optical Layout on the AP / PSL table 2008-Aug-05 | Here are the PDF and the PNG of the AP and
PSL table layouts.
After this photo, the squeezing setup at |
|
|
801
|
Wed Aug 6 11:10:34 2008 |
Koji | Update | General | Abs. Len. Meas. ~ analysis of the TEM00 scan | [B]Analysis of the data on August 3th ~ Part
1[/B]
|
|
|
802
|
Wed Aug 6 11:43:52 2008 |
Koji | Update | General | Abs. Len. Meas. ~ analysis of the TEM01 scan | [B]Analysis of the data on August 3th ~ Part
2[/B]
|
|
|
838
|
Thu Aug 14 21:52:51 2008 |
Koji | Summary | General | Abs. Len. Meas. ~ summary of my Summer | I have made the summary of the absolute length
measurement.
It is attached here. The file is a bit big |
|
|
1026
|
Sat Oct 4 07:23:42 2008 |
Koji | Metaphysics | Environment | The Gatekeeper | Hi, this is Koji from Japan.
I am afraid that this is a poisonous spider, |
|
|
1717
|
Tue Jul 7 15:08:49 2009 |
Koji | Summary | Photos | 40 high school students visited 40M | Alan and Alberto conducted a tour of 40
high-school students.
It may be the same tour that Rana |
|
|
1753
|
Wed Jul 15 18:22:15 2009 |
Koji | Update | Cameras | Re: GigE Phase Camera |
|
|
|
1789
|
Sat Jul 25 13:34:58 2009 |
Koji | Update | General | Week 5/6 Update |
|
|
|
1790
|
Sat Jul 25 13:49:28 2009 |
Koji | Update | General | Multiply Resonant EOM Update |
|
|
|
1792
|
Sat Jul 25 19:04:01 2009 |
Koji | Update | PSL | Aligning the beam to the Faraday |
|
|
|
1799
|
Mon Jul 27 19:55:19 2009 |
Koji | HowTo | IOO | Lens selection: plano-convex? or bi-convex? | Q. When should we use plano-convex lenses,
and when should we use bi-convex?
As I had the same question from Jenne |
|