| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
4466
|
Wed Mar 30 20:08:34 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | Step 2: Getting the beam |
|
|
4467
|
Wed Mar 30 20:14:17 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | Additional: |
|
|
4468
|
Wed Mar 30 20:31:30 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | Step |
|
|
4469
|
Wed Mar 30 20:50:43 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | Step |
|
|
4470
|
Wed Mar 30 21:21:15 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | Step 4: Matching into |
|
|
4473
|
Thu Mar 31 02:59:49 2011 |
Koji | Configuration | Green Locking | The wonderful world of mode-matching | I went through the entries.
1. Give us a photo of the day. i.e.
Faraday, tilted lens, etc... |
|
|
4475
|
Thu Mar 31 11:30:51 2011 |
steve | Configuration | General | strain relieved rf cables | I strain relieved RF cables labeled 33
MHZ LO and 166 MHZ to EOM at 1X2 This
is a temporary setup for the 11 MHZ |
|
|
4476
|
Thu Mar 31 14:10:00 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching |
|
|
|
4477
|
Thu Mar 31 15:23:14 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching |
|
|
|
4481
|
Fri Apr 1 18:54:41 2011 |
Bryan | Configuration | Green Locking | Y end doubling oven | The doubling oven is now ready to go for
the Y arm. The PPKTP crystal is mounted in
the oven: |
|
|
4485
|
Mon Apr 4 14:20:32 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | |
|
|
4486
|
Mon Apr 4 18:58:44 2011 |
Bryan | Configuration | Green Locking | A beam of purest green | We now have green light at the Y end.
The set-up (with careful instructions |
|
|
4493
|
Wed Apr 6 18:55:49 2011 |
Jamie, Larisa | Configuration | LSC | major AP table cleanup | We ripped out all of the old AS, PLL, and
REFL paths, green, orange, and cyan respectively
on the old |
|
|
4495
|
Wed Apr 6 22:13:24 2011 |
Bryan | Configuration | Green Locking | Resonating green light! | Every so often things just work out. You
do the calculations, you put the lenses on
the bench, you manually adjust the pointing |
|
|
4520
|
Wed Apr 13 16:56:08 2011 |
Bryan | Configuration | Green Locking | Y-ARM Green-Locked! | Locked!
The Y-arm can |
|
|
4521
|
Wed Apr 13 23:32:07 2011 |
Aidan, Jamie | Configuration | LSC | AS PD and Camera installed | I spent some time tracking down the AS
beam which had vanished from the AP table.
Eventually, by dramatically mis-aligning |
|
|
4525
|
Thu Apr 14 17:45:59 2011 |
Bryan | Configuration | Green Locking | I leave you with these messages... | OK…
the Y-arm may be locked with green light,
which was the goal, and this is all good |
|
|
4532
|
Fri Apr 15 13:43:23 2011 |
Bryan | Configuration | Green Locking | I leave you with these messages... | Y-end PDH electronics. |
|
|
4536
|
Fri Apr 15 22:57:38 2011 |
Aidan, Jamie | Configuration | LSC | AS PD and Camera installed | AS port ITMX YAW range where AS beam
was visible = [-1.505, -1.225] - these extrema
put the beam just outside of some aperture |
|
|
4540
|
Mon Apr 18 17:47:41 2011 |
kiwamu | Configuration | LSC | LSC rack's ADC cabling | To
understand the situation of the ADC cabling
at the LSC rack I looked around the rack |
|
|
4541
|
Mon Apr 18 21:09:45 2011 |
Jamie | Configuration | Computers | new control room machine: pianosa | I've just installed the new control room
machine: "pianosa". It is
a replacement for the old sun machine "op440m" |
|
|
4542
|
Mon Apr 18 21:14:53 2011 |
Jamie | Configuration | Computers | new control room machine: pianosa | Also, op440m's Sun monitor did not work well
with pianosa, so I'm lending pianosa my HP
monitor until we can get a suitable replacement. |
|
|
4547
|
Wed Apr 20 21:53:01 2011 |
Suresh | Configuration | RF System | RF system: Stray heliax cable | We found a stray unused heliax |
|
|
4603
|
Tue May 3 00:44:02 2011 |
Koji | Configuration | Computers | Martian WIreless Bridge | The Martian wireless bridge has the ethernet
cable inserted in the wrong connector.
It should be inserted to one of the |
|
|
4612
|
Tue May 3 14:35:44 2011 |
Larisa Thorne | Configuration | Electronics | Jenne-Seismometer LPF project | I was charge with making a Non-Inverting
Op Amp Low Pass Feedback circuit for Jenne,
which may somehow be integrated into a seismometer |
|
|
4625
|
Wed May 4 13:51:51 2011 |
valera | Configuration | | Intermittent MC3 UL PD signal | The attached plot shows the 30 day trend
of the MC3 UL PD signal. The signal dropped
to zero at some point but now it is close |
|
|
4630
|
Wed May 4 17:32:06 2011 |
Larisa Thorne | Configuration | Electronics | Jenne-Seismometer LPF project | Building on what was posted previously
|
|
|
4634
|
Thu May 5 12:01:53 2011 |
Larisa Thorne | Configuration | Electronics | Jenne-Seismometer LPF project | Having finished the bulk of the work
for the LPF itself ( see here ),
I have begun trying to design the seismometer |
|
|
4642
|
Thu May 5 15:26:52 2011 |
Leo Singer | Configuration | Computers | 'glue' installed on some control room computers | I installed 'glue' on Rossa, Allegra, and
Rosalba. This is a Python module that
includes a facility for LIGO_LW XML files. |
|
|
4644
|
Thu May 5 15:33:37 2011 |
steve | Configuration | RF System | LSC rack | New right angle PVC front panel with SMA
bulkhead connectors are in place. The connections
are still lose. It is ready for Suresh to |
|
|
4646
|
Thu May 5 17:19:21 2011 |
Leo Singer | Configuration | SUS | Tuning notch filters for bounce mode suspensions | I am tuning the notch filters for the bounce
modes in the suspensions, starting with the
ITMs and ETMs. I'll do the MCs, the |
|
|
4652
|
Fri May 6 14:59:36 2011 |
Leo Singer | Configuration | SUS | Tuning ITMY bandstop | I tuned the ITMY bandstops -- 'before'
and 'after' spectra attached. Note
that the after the tuning, the bounce mode |
|
|
4667
|
Mon May 9 16:12:49 2011 |
Jamie | Configuration | CDS | canonicalize paths to core and userapps | I have updated the /opt/rtcds paths to
reflect the new specification of the CDS
aLIGO code release procedures document. |
|
|
4685
|
Wed May 11 10:49:16 2011 |
valera | Configuration | Electronics | MC3 LL PD has no signal | Yesterday we found that MC3 OSEM LL PD
did not have a sensible signal - the readback
was close to zero and it was making MC move |
|
|
4690
|
Wed May 11 16:04:36 2011 |
Larisa Thorne | Configuration | Electronics | Jenne-Seismometer LPF project | The schematic for the seismometer box from
this last
time has been updated... |
|
|
4691
|
Wed May 11 17:10:04 2011 |
kiwamu | Configuration | Electronics | fixed : MC3 LL PD has no signal | [Valera / Kiwamu]
It was because of a loose connection.
Pushing the connector solved the issue. |
|
|
4692
|
Wed May 11 17:20:24 2011 |
kiwamu | Configuration | IOO | loop diabled on PZT2 | [Valera / Kiwamu]
|
|
|
4713
|
Fri May 13 17:20:48 2011 |
Leo Singer | Configuration | SUS | Tuned bounce and roll mode of ETMY suspension | I tuned the bounce and roll mode bandstops
for ETMY, although it was difficult for me
to tell if there was improvement with the |
|
|
4730
|
Tue May 17 11:45:20 2011 |
Jamie | Configuration | CDS | purged non-c1 site files from rtcds checkout of cds_user_apps | I purged all of the working copy checkouts
of site files for all sites that are not
c1 from the rtcds cds_user_apps working directory |
|
|
4732
|
Tue May 17 17:01:22 2011 |
jamie | Configuration | CDS | Update LSC channels from _DAQ to _DQ | As of RCG version 2.1, recorded channels
use the suffix "_DQ", instead of
"_DAQ". I just rebuilt and |
|
|
4733
|
Tue May 17 18:09:13 2011 |
Jamie, Kiwamu | Configuration | CDS | c1sus and c1auxey crashed, rebooted | c1sus and
c1auxey crashed, required hard reboot |
|
|
4735
|
Tue May 17 22:50:00 2011 |
Jamie | Configuration | LSC | New digital lockin added to LSC model/screen | I added a lockin to the LSC model, and
added it's corresponding control to the LSC
screen. Here's is what I added to the |
|
|
4743
|
Wed May 18 22:11:31 2011 |
rana | Configuration | LSC | New digital lockin added to LSC model/screen | |
|
|
4761
|
Mon May 23 14:28:23 2011 |
kiwamu | Configuration | LSC | POY55 installed | Last
Saturday the POY55 RFPD (see
this entry |
|
|
4763
|
Mon May 23 18:16:42 2011 |
Koji | Configuration | LSC | POY55 installed | The DC Transimpedance of POP55 was increased
from 50 Ohm to 10010 Ohm. There is the offset
of 46mV. This should be cancelled in the |
|
|
4764
|
Wed May 25 19:03:59 2011 |
Jamie | Configuration | CDS | Update rtcds checkout of cds_user_apps with new top-level directory names. | The top-level subsystem subdirectories
in the cds_user_apps source repository were
renamed today to be all lower case. |
|
|
4765
|
Wed May 25 19:19:11 2011 |
Jamie | Configuration | CDS | !!!CHECK IN YOUR MODELS!!! | !!!CHECK
IN MODEL CHANGES!!!
Today
I found three models that were modified, |
|
|
4766
|
Wed May 25 20:12:55 2011 |
Jamie | Configuration | LSC | New digital lockin added to LSC model/screen |
|
|
|
4767
|
Thu May 26 17:10:21 2011 |
Jamie | Configuration | LSC | New digital lockin added to LSC model/screen |
|
|
|
4774
|
Tue May 31 16:07:57 2011 |
Larisa Thorne | Configuration | Electronics | Seismometer Box Update | (Continuation of this)
I plugged the circuit into the LISO |
|