ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
710
|
Mon Jul 21 19:55:16 2008 |
rana,jenne | Configuration | IOO | Noise in MC_F | [COLOR=darkgreen]Jenne put the MC board on
extender today - its still that way but everything
is probably connected (check AO).[/COLOR]
|
|
|
711
|
Tue Jul 22 03:03:22 2008 |
John, Rob | Update | PSL | FSS open loop transfer function | With the common gain slider maxed out the
unity gain frequency is 58kHz.
|
|
|
712
|
Tue Jul 22 09:24:17 2008 |
steve | Update | PSL | laser power | Laser power reality of 120 days |
|
|
713
|
Tue Jul 22 11:55:22 2008 |
rana | Update | PSL | Note from R. Abbott re: the PMC | an email from Rich:
[CODE]Your PZT is broken.
|
|
|
714
|
Tue Jul 22 13:15:14 2008 |
rob | Update | PSL | Note from R. Abbott re: the PMC | [quote]an email from Rich:
[CODE]Your PZT is broken.
|
|
|
715
|
Tue Jul 22 13:16:09 2008 |
John, Rob | Update | PSL | FSS open loop transfer function | [quote]With the common gain slider maxed out
the unity gain frequency is 58kHz.
|
|
|
716
|
Tue Jul 22 16:50:09 2008 |
steve | Metaphysics | Environment | professorial clean up of work bench | Atm1: is showing the spiritual satisfaction
after work bench clean up by the professor
himself.
|
|
|
717
|
Tue Jul 22 22:11:58 2008 |
Yoichi | Update | LSC | X-arm g factor measurement | Alberto, Yoichi
We measured the g factor of the X-arm by |
|
|
718
|
Tue Jul 22 22:25:31 2008 |
rana | Update | LSC | Looptickle for existing 40m | John and I have adapted the Stefan-Looptickle
model of the 40m upgrade to have the parameters
of the old one.
|
|
|
719
|
Wed Jul 23 01:42:26 2008 |
rana | Configuration | PSL | FSS RFPD: Examined, "repaired", and re-installed | [U]Rob said that there might be something
wrong with the FSS RFPD since the loop gain
is so low.[/U]
|
|
|
720
|
Wed Jul 23 10:47:05 2008 |
Sharon | Update | | Weekly update | This week I spent some time with Alex who
updated the adaptive code to save the filter's
coeffs all the time, stop when I open the |
|
|
721
|
Wed Jul 23 10:49:37 2008 |
Max | Update | Computer Scripts / Programs | Weekly Progress Report | This week I installed the magnetometer. The
channels seem to be reading correctly. I'm
back to working on noise budget and have |
|
|
722
|
Wed Jul 23 12:42:23 2008 |
Eric | Summary | Cameras | Weekly Summary | I finally got the ezcaPut command working.
The camera code can now talk directly to
the EPICS channels. However, after repeated |
|
|
723
|
Wed Jul 23 13:52:26 2008 |
Sharon | Update | | MEDM changes | There is a new MEDM screen now when you go
from c1ass>top>pem.
Instead of having 12 "mini filters" screens |
|
|
724
|
Wed Jul 23 16:31:02 2008 |
Alberto | Configuration | Computers | Megatron connected | Joe, Rana, Alberto,
we found out the password for Megatron so |
|
|
725
|
Wed Jul 23 17:19:48 2008 |
Alberto | Configuration | Computers | Megatron connected | We changed the IP address. Ther new one is
131.215.113.95.
|
|
|
726
|
Wed Jul 23 18:42:18 2008 |
Jenne | Update | PSL | Alignment of AOM | [Rana, Yoichi, Jenne]
Short Version: We are selecting the wrong |
|
|
727
|
Wed Jul 23 21:48:30 2008 |
rob | Configuration | General | restore IFO when you're done with it |
[SIZE=3][B]when you are done with the IFO,
please click "Restore last auto-alignment"[/B][/SIZE] |
|
|
728
|
Wed Jul 23 22:34:07 2008 |
Yoichi | Update | LSC | Arm cavity g-factor measurement | I tried the same thing as the X-arm to the
Y-arm.
I'm puzzled. I found exactly the same behavior |
|
|
729
|
Thu Jul 24 01:04:01 2008 |
rob | Configuration | LSC | IFR2023A (aka MARCONI) settings | [quote]
P.S.: We made a test by changing the frequency |
|
|
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.
|
|
|
731
|
Thu Jul 24 02:57:26 2008 |
rob | Update | LSC | Arm cavity g-factor measurement | [quote]
So, now I feel that the method for the TEM01
quest should be reconsidered.
|
|
|
732
|
Thu Jul 24 03:08:20 2008 |
rob | Update | Locking | +f2 DRMI+2ARMS |
rob, john, yoichi
|
|
|
733
|
Thu Jul 24 08:09:26 2008 |
Yoichi | Update | LSC | Arm cavity g-factor measurement | [quote]
A-ha! Do you always expect the 30Hz signal,
don't you?
|
|
|
734
|
Thu Jul 24 11:49:07 2008 |
Masha | Summary | Auxiliary locking | belated weekly summary | I designed a high pass filter to whiten the
spectrum from the Mach Zehnder to optimize
the
|
|
|
735
|
Thu Jul 24 19:29:26 2008 |
Yoichi | Configuration | PSL | C1:PSL-STAT_FSS_NOM_C_GAIN is changed from 30 to -0.7 | Koji, Yoichi
Since the light power going to the ref. cavity |
|
|
736
|
Thu Jul 24 21:04:58 2008 |
rana | Update | PSL | FSS | Since Jenne and Yoichi are going to finish
up their refcav/FSS work in the morning I
decided to
|
|
|
737
|
Thu Jul 24 21:53:00 2008 |
rana | Summary | Treasure | High School Tour group and the PMC | There was a tour today of 40 high school kids.
[COLOR=red]I warned them that the lasers
could burn out their
|
|
|
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 |
|
|
739
|
Fri Jul 25 13:30:53 2008 |
Sharon | Update | | Changes in ASS computer | I editted the simulink diagram of the ASS
computer so it now has 2 more channels reading
2 sets of the FIR coefficients to match Alex's |
|
|
740
|
Fri Jul 25 17:32:46 2008 |
Sharon | Update | | ASS computer | So, it seems a bit too complicated getting
the coefficients the way I wanted it to happen
(simulink-.ini...).
|
|
|
741
|
Fri Jul 25 19:57:18 2008 |
Jenne | Update | PSL | Ref Cav & PMC | "PMC is in, but is still being worked on.
Leave it alone." ---Rana
|
|
|
742
|
Sat Jul 26 15:09:57 2008 |
Aidan | Update | Computers | Reboot of op440m |
I was reviewing the PSL Overview screen this
afternoon and op440m completely froze when |
|
|
743
|
Sun Jul 27 20:25:49 2008 |
rana | Configuration | Environment | Office Temperature increased to 75 F | Since we have the chiller for the PSL chiller
now, [SIZE=2][COLOR=darkred]I've just increased
the office area
|
|
|
744
|
Sun Jul 27 20:49:21 2008 |
rana | Configuration | Computers | NTP | After Aidan did whatever he did on op440m,
I had to restart ntpd. I noticed it didn't
actually do
|
|
|
745
|
Sun Jul 27 23:06:17 2008 |
rana | Update | PSL | PMC, MZ, MC-MMT, etc. | With the new PMC now in I aligned the MZ to
the new beam (there is sadly no steering
between the PMC and the MZ).
|
|
|
746
|
Mon Jul 28 11:20:13 2008 |
Jenne | Update | PSL | Work on the FSS and Reference Cavity | [Yoichi, Jenne, Koji]
The Reference Cavity's saga continues....
|
|
|
747
|
Mon Jul 28 12:02:32 2008 |
Sharon | Update | | accelerometers settings | Jenne, Sharon
|
|
|
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 |
|
|
749
|
Mon Jul 28 17:44:07 2008 |
rana | Update | PSL | PMC PZT v. temperature | This plot shows that the PMC [COLOR=darkblue]PZT
has ~20 Vpp fluctuations on a 24 hour timescale[/COLOR]
which is correlated to the 24 hour temperature |
|
|
750
|
Mon Jul 28 17:58:05 2008 |
Sharon | Update | | TOP screen changes | I wanted to test the adaptive code with a
downsampling rate of 32 instead of 16. To
do this I entered a 32 Hz ((2048/32)/2 - |
|
|
751
|
Mon Jul 28 23:41:07 2008 |
rob | Configuration | PSL | FSS/MC gains twiddled |
I found the FSS and MC gain settings in a
weird state. The FSS was showing excess |
|
|
752
|
Tue Jul 29 01:03:17 2008 |
rob | Configuration | IOO | MC length measurement | rob, yoichi
We measured the length of the mode cleaner |
|
|
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.
|
|
|
754
|
Tue Jul 29 11:50:01 2008 |
Jenne | Update | Environment | 5.6 Earthquake | Earthquake Details
Magnitude 5.6
Date-Time
|
|
|
755
|
Tue Jul 29 13:54:08 2008 |
rana | Update | SUS | ETMY and PRM have EQ related problems | The attached trend shows that ETMY and PRM
both had large steps in their sensors
around the time of the EQ and didn't return |
|
|
756
|
Tue Jul 29 14:38:02 2008 |
rob | Update | SUS | ETMY and PRM have EQ related problems | [quote]The attached trend shows that ETMY
and PRM both had large steps in their sensors
around the time of the EQ and didn't return |
|
|
757
|
Tue Jul 29 18:15:36 2008 |
rob | Update | IOO | MC locked |
I used the SUS DRIFT MON screen to return
the MC suspensions to near their pre-quake |
|
|
758
|
Tue Jul 29 19:41:38 2008 |
Yoichi | Update | PSL | FSS loop transfer functions | Last night I measured a bunch of transfer
functions on the FSS loop.
All the loop gains were measured with the |
7x |
|
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 |
|