| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
3778
|
Mon Oct 25 20:20:59 2010 |
yuta, Joe | Update | CDS | DAQ channel number etc | [U][B]Summary:[/B][/U]
We split the old SDSEN filters to SDSEN,
SDSIDE, SDCOIL last week.
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|
|
3777
|
Mon Oct 25 11:39:06 2010 |
Jenne | Update | SUS | Magnets glued to PRM | This morning I glued the magnets to the PRM.
Now we wait, and tomorrow afternoon (at
the earliest), Suresh and I can balance the |
|
|
3776
|
Mon Oct 25 02:25:21 2010 |
Koji | Update | PSL | Quarter Wave Plate Measurements | Q1. Suppose the laser beam has a certain
(i.e. arbitrary) polarization state but contains
only TEM00. Also suppose the PSB is perfect |
|
|
3775
|
Mon Oct 25 02:23:47 2010 |
Koji | Configuration | elog | ELOG 2.8.0 | When I push the reply button, the raw html
shows up in the edit window and have to use
HTML to write the entry.
|
|
|
3774
|
Mon Oct 25 02:14:38 2010 |
Koji | Summary | Locking | setup for green beat | - What is the actual photocurrent for the
beam1 and beam2? We don't care how much power
do you have before the BS, but care how much |
|
|
3773
|
Sun Oct 24 19:55:50 2010 |
kiwamu | Update | Electronics | lonely RF amplifier on ITMX table | (Rana, Kiwamu)
|
|
|
3772
|
Sun Oct 24 19:23:41 2010 |
rana | Configuration | elog | ELOG 2.8.0 | [SIZE=4][COLOR=blue][FONT=Comic Sans MS][B]I
stopped the ELOG and restarted us on 2.8.0.[/B][/FONT][/COLOR][/SIZE]
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|
|
3771
|
Sun Oct 24 18:06:35 2010 |
kiwamu | Summary | Locking | setup for green beat | |
|
|
3770
|
Sat Oct 23 14:42:01 2010 |
yuta | Summary | CDS | damped MC suspensions | After replacing filters, MC suspensions
damped last night.
Further measurement next time. |
|
|
3769
|
Sat Oct 23 03:36:05 2010 |
yuta | Update | CDS | fixed filters for C1SUS, C1RMS, C1MCS | (Joe, Yuta)
Summary: |
|
|
3768
|
Sat Oct 23 02:25:49 2010 |
Kevin | Update | PSL | Quarter Wave Plate Measurements |
|
|
|
3767
|
Fri Oct 22 23:29:48 2010 |
yuta | Update | CDS | fixed output filter switching | (Joe, Yuta)
Summary: |
|
|
3766
|
Fri Oct 22 21:28:27 2010 |
Aidan | Update | Locking | Green era: found a green beat note finally | Nice work!
|
|
|
3765
|
Fri Oct 22 19:53:27 2010 |
yuta | Summary | CDS | conversion failure in digital filters | (Rana, Joe, Yuta)
We now understand that we never succeeded |
|
|
3764
|
Fri Oct 22 18:22:27 2010 |
Alberto | Update | Electronics | Epic Takeover |
|
|
|
3763
|
Fri Oct 22 18:15:21 2010 |
kiwamu | Update | Locking | Green era: found a green beat note finally | finally
we found it ! |
|
|
3762
|
Fri Oct 22 16:59:21 2010 |
Jenne | Update | Electronics | Epic Takeover | As the suspension work winds down (we'll
be completely done once the ETMs arrive,
are suspended, and then are placed in the |
|
|
3761
|
Fri Oct 22 15:06:43 2010 |
Jenne | Update | SUS | Arts and Crafts! | This afternoon I epoxied the guiderod and
wire standoff to the new PRM. I also
epoxied the magnets that Suresh picked out |
|
|
3760
|
Fri Oct 22 03:37:56 2010 |
Kevin | Update | PSL | Quarter Wave Plate Measurements | [Koji and Kevin]
We measured the reflection from the
PBS as a function of half wave plate rotation |
|
|
3759
|
Fri Oct 22 01:23:13 2010 |
Koji | Update | PSL | Found the beat at 1064nm | [Koji / Suresh]
We worked on the 1064 beating a bit
more. |
|
|
3758
|
Fri Oct 22 00:59:01 2010 |
yuta | Update | CDS | new MEDM screens, new filter banks(whitening and dewhitening related) | (Joe, Yuta)
Summary: |
|
|
3757
|
Thu Oct 21 21:35:16 2010 |
yuta | Update | CDS | fixed whitening filter switches | (Joe, Yuta)
Summary: |
|
|
3756
|
Thu Oct 21 19:10:39 2010 |
Aidan | Update | PSL | Found the beat at 1064nm | |
|
|
3755
|
Thu Oct 21 18:45:50 2010 |
Koji | Update | PSL | Found the beat at 1064nm | [Koji Suresh]
We found the beat at 1064nm. T(PSL)=26.59deg, |
|
|
3754
|
Thu Oct 21 15:59:28 2010 |
kiwamu | Update | Locking | no green beat note : details | Last night I tried searching for a beat
note signal with two different PD trans impedance |
|
|
3753
|
Thu Oct 21 13:05:19 2010 |
Koji | Summary | Computers | elog change and rossa tex | This is cool |
|
|
3752
|
Thu Oct 21 12:15:02 2010 |
rana | Update | PEM | 6.9 Mag EQ in Gulf of California |
Magnitude
|
|
|
3751
|
Thu Oct 21 10:44:56 2010 |
steve | Metaphysics | Treasure | 1987 supernova tapes plus....? | I'm cleaning out to make room for our new
optical cabinet. Are we keeping these? There
are ~20 pieces of 10" od |
|
|
3750
|
Thu Oct 21 05:51:10 2010 |
kiwamu | Update | Locking | no green beat note | Still I didn't see any beat note signals..
With a help from Suresh, Yuta |
|
|
3749
|
Thu Oct 21 01:11:48 2010 |
rana | Summary | Computers | elog change and rossa tex | I deleted
a bunch of categories from the elogd.cfg |
|
|
3748
|
Wed Oct 20 21:43:25 2010 |
yuta | Update | CDS | checking whitening filters for MCs and messed up | (Joe, Yuta)
Background: |
|
|
3747
|
Wed Oct 20 21:33:11 2010 |
Kevin | Update | PSL | Quarter Wave Plate Optimization | [Suresh and Kevin]
We placed the quarter wave plate
in front of the 2W laser and moved the half |
|
|
3746
|
Wed Oct 20 18:17:35 2010 |
Suresh, Jenne | Update | SUS | PRM assembly | We have positioned the guide rod and the
wire-stand-off on the optic in the axial
direction. |
|
|
3745
|
Wed Oct 20 16:41:41 2010 |
steve | Omnistructure | General | laser chiller leaving for MIT | |
|
|
3744
|
Wed Oct 20 01:22:18 2010 |
yuta | Update | CDS | fixed filters for MCs, but no damping | (Rana, Yuta)
Summary: |
|
|
3743
|
Tue Oct 19 22:37:28 2010 |
Koji | Update | PSL | PSL table cleaning up | I cleaned up the scattered tools, optics,
and mounts of the PSL table. I gathered those
stuffs at the two coners. |
|
|
3742
|
Tue Oct 19 21:10:27 2010 |
yuta | Update | CDS | bad filter coefficients for every suspensions! | (Koji, Yuta)
Summary: |
|
|
3741
|
Tue Oct 19 15:14:51 2010 |
Jenne | Update | SUS | PRM (little) update | [Jenne, Suresh]
We've aligned the guiderod and wire
standoff to the PRM, each partly. They |
|
|
3740
|
Tue Oct 19 00:24:07 2010 |
Dmass | Omnistructure | Electronics | Massive restocking of the 40m | I had a number of delinquent items on the
sign out list from the 40m. I returned about
half, and ordered replacements for most of |
|
|
3739
|
Mon Oct 18 22:11:32 2010 |
Joonho Lee | Summary | Electronics | CCD cables for input signal | Today
I checked all the CCD cables which is connected
input channels of the VIDEOMUX. |
|
|
3738
|
Mon Oct 18 18:33:46 2010 |
Koji | Summary | COC | Summary of the main mirrors & their phasemap measurement | I have made a summary web page for the
40m upgrade optics.
https://nodus.ligo.caltech.edu:30889/40m_phasemap/ |
|
|
3737
|
Mon Oct 18 18:00:36 2010 |
Koji | Update | SUS | Old PRM, SRM stored, new PRM drag wiped | - Steve is working on the storage shelf
for those optics.
- PRMU002 was chosen as it has the |
|
|
3736
|
Mon Oct 18 17:16:30 2010 |
Jenne | Update | SUS | Old PRM, SRM stored, new PRM drag wiped | [Jenne, Suresh]
We've put the old PRM and SRM (which
were living in a foil house on the cleanroom |
|
|
3735
|
Mon Oct 18 15:33:00 2010 |
josephb, alex | Update | CDS | Possibly broken timing cards | It looks as though we may have two IO chassis
with bad timing cards.
Symptoms are as follows: |
|
|
3734
|
Mon Oct 18 11:22:13 2010 |
Jenne | Update | Computers | Shame on people not elogging! FrameFiles backups not working. | On the one hand, SHAME
ON ALL PEOPLE WHO DON'T ELOG THINGS, |
|
|
3733
|
Mon Oct 18 09:01:48 2010 |
steve | HowTo | General | How not to | This BNC cable is crying for help. Please
do not do this to me. It should be
reported to the abused center.Throw |
|
|
3732
|
Mon Oct 18 08:44:36 2010 |
rana | Update | CDS | slow DAQ channels added | Why EXCMON? I think that we should
modify the filter coefficients so that the
decimation filter that makes OUT16 is a 2nd |
|
|
3731
|
Fri Oct 15 22:16:22 2010 |
kiwamu | Update | SUS | what's wrong with MC2 | [Yuta, Suresh, Rana and Kiwamu]
The |
|
|
3730
|
Fri Oct 15 21:25:23 2010 |
Suresh | Update | IOO | 2W NPRO laser output power drop question | The power meter used in the measurements
of elog entries 2822, 3698 and 3709 was the
Ophir PD300-3W. This power head has |
|
|
3728
|
Fri Oct 15 15:32:35 2010 |
josephb | Update | CDS | slow DAQ channels added | I
added all the _OUT16, _INMON, _EXCMON channels
associated with the BS, ITMX, and ITMY channels |
|