| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2040
|
Fri Oct 2 02:55:07 2009 |
rob | Update | Locking | more progress | More progress with locking tonight, with
initial acquisition and power ramps working.
The final handoff to RF CARM still needs |
|
|
2047
|
Sat Oct 3 14:53:24 2009 |
rob | Update | Locking | more progress | Late last night after the ETMY settled
down from the quake I made some more progress
in locking, with the handoff to RF CARM succeeding |
|
|
2048
|
Mon Oct 5 02:51:08 2009 |
rob | Update | Locking | almost there | Working well tonight: the handoff of CARM
to RF (REFL2I), successful reduction of CARM
offset to zero, and transition control of |
|
|
2056
|
Tue Oct 6 01:41:20 2009 |
rob | Update | Locking | DC Readout | Lock acquisition working well tonight.
Was able to engage CM boost (not superboost)
with bandwidth of ~10kHz. Also succeeded |
|
|
2081
|
Mon Oct 12 17:14:39 2009 |
rob | Update | Locking | stability | Last night, 2+ hour lock, probably broken
by me driving too hard (DARM_EXC). |
|
|
2092
|
Wed Oct 14 16:59:37 2009 |
rob | Update | Locking | daytime locking | The IFO
can now be locked during the daytime. |
|
|
2093
|
Wed Oct 14 23:02:41 2009 |
rana | Update | Locking | daytime locking | This is huge. |
|
|
2097
|
Thu Oct 15 09:23:07 2009 |
steve | Summary | Locking | never had it so good | Awesome 5 hrs of locking Rob! |
|
|
2100
|
Thu Oct 15 17:12:00 2009 |
rana | Summary | Locking | never had it so good |
|
|
|
2141
|
Mon Oct 26 03:57:06 2009 |
rob | Update | Locking | bad | Lock acquisition has gone bad tonight.
The initial stage works fine, up
through handing off control of CARM to MCL. |
|
|
2148
|
Tue Oct 27 01:45:02 2009 |
rob | Update | Locking | MZ | [quote] Tonight we also encountered a large
peak in the frequency noise around 485 Hz.
Changing the MZ lock point (the spot in |
|
|
2152
|
Tue Oct 27 18:19:14 2009 |
rob | Update | Locking | bad |
|
|
|
2154
|
Wed Oct 28 05:02:28 2009 |
rob | Update | Locking | back | LockAcq is back on track, with the full
script working well. Measurements in
progress. |
|
|
2162
|
Thu Oct 29 21:51:07 2009 |
rob | Update | Locking | bad |
|
|
|
2163
|
Fri Oct 30 04:41:37 2009 |
rob | Update | Locking | working again | I never actually figured out exactly what
was wrong in entry 2162,
but I managed to circumvent by changing the |
|
|
2271
|
Sun Nov 15 18:42:10 2009 |
Alberto | Update | Locking | Interferometer fully locked for 3331 seconds | This afternoon, I tried to lock the interferometer
again after a few days.
After a couple of failed attempts, |
|
|
2325
|
Wed Nov 25 03:05:15 2009 |
rob | Update | Locking | Measured MC length |
|
|
|
2332
|
Wed Nov 25 14:29:08 2009 |
rob | Update | Locking | Measured MC length--FSS trend |
|
|
|
2333
|
Wed Nov 25 15:38:08 2009 |
rob | Update | Locking | Measured MC length |
|
|
|
3072
|
Sat Jun 12 19:41:04 2010 |
Alberto | Update | Locking | 40m Upgrade Optickle Model | I wrote down the settings according to
which I tuned the optickle model of the 40m
Upgrade. |
|
|
3074
|
Sun Jun 13 08:28:44 2010 |
valera | Update | Locking | 40m Upgrade Optickle Model | In my calculation of the digital
filters of the optical transfer functions
the carrier light is resonant in coupled |
|
|
3075
|
Mon Jun 14 07:57:07 2010 |
alberto | Update | Locking | 40m Upgrade Optickle Model |
|
|
|
3079
|
Tue Jun 15 21:28:44 2010 |
alberto | Update | Locking | 40m Upgrade Optickle Model |
|
|
|
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 |
|
|
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 |
|
|
3763
|
Fri Oct 22 18:15:21 2010 |
kiwamu | Update | Locking | Green era: found a green beat note finally | finally
we found it ! |
|
|
3766
|
Fri Oct 22 21:28:27 2010 |
Aidan | Update | Locking | Green era: found a green beat note finally | Nice work!
|
|
|
3771
|
Sun Oct 24 18:06:35 2010 |
kiwamu | Summary | Locking | setup for green beat | |
|
|
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 |
|
|
3800
|
Wed Oct 27 21:33:42 2010 |
Suresh | Update | Locking | Green from the far end re-obtained |
The
mirror which was moved during the mode matching |
|
|
3804
|
Thu Oct 28 03:21:35 2010 |
Suresh | Update | Locking | Aligned the MC2 transmission photodiode | Yuta and
Suresh
|
|
|
3843
|
Tue Nov 2 00:17:01 2010 |
Suresh | Configuration | Locking | Temporary changes to the Video Mux | Fiber
coupling 1064 nm light at the end of X arm
This |
|
|
3859
|
Thu Nov 4 03:13:46 2010 |
Suresh | Update | Locking | Fibre coupling 1064nm light at the south-end table | [Kiwamu,
Suresh]
We |
|
|
3865
|
Thu Nov 4 19:00:57 2010 |
Suresh | Update | Locking | Fibre coupling 1064nm light at the south-end table | The Fluke
Visual Fault locator (Visifault) arrived
and I used it to couple 1064nm light into |
|
|
3866
|
Thu Nov 4 19:26:51 2010 |
Suresh | Update | Locking | Changes to the Video MUX reversed | All the
temporary changes to the video cables and
the video MUX ( 3843 |
|
|
4143
|
Wed Jan 12 17:22:47 2011 |
Suresh | Configuration | Locking | MC demod phase adjusted to minimise the I output | [Koji, Suresh]
We wanted to check and make sure
that the relative phase of the two inputs |
|
|
4155
|
Fri Jan 14 12:29:57 2011 |
Koji | Update | Locking | Next steps for the green | These are the next steps for a better operation
of the arm locking. They are suitable for
the day time activities |
|
|
4161
|
Sun Jan 16 02:20:59 2011 |
Suresh | Update | Locking | comparing the PSL with the X-end-NPRO through the green beat | Objective:
We
wish to study the coherence of the two NPROs |
|
|
4166
|
Wed Jan 19 03:37:30 2011 |
Suresh | Update | Locking | comparing the PSL with the X-end-NPRO through the green beat |
[Kiwamu, Suresh] |
|
|
4177
|
Thu Jan 20 15:39:59 2011 |
Aidan | Update | Locking | Upper limit on frequency noise of ADC | [Aidan, Kiwamu]
Kiwamu and I plugged the output from
a DS3456 function generator into the ADC |
|
|
4178
|
Thu Jan 20 17:00:39 2011 |
Aidan | Configuration | Locking | Ballpark figures for Green Locking PLLs (Digital vs Analogue) | If we use a digital PLL for locking the
frequency of the PSL and END green lasers
then we can expect a UGF of around 1kHz (assuming |
|
|
4182
|
Fri Jan 21 11:45:01 2011 |
Aidan | Configuration | Locking | Ballpark figures for Green Locking PLLs (Digital vs Analogue) |
|
|
|
4822
|
Wed Jun 15 02:20:00 2011 |
Jenne | Update | Locking | MICH noise budget? | I would like to announce my confusion with |
|
|
4823
|
Wed Jun 15 12:16:37 2011 |
Jamie | Update | Locking | MICH noise budget? |
|
|
|
4893
|
Tue Jun 28 02:11:47 2011 |
Jenne | Update | Locking | Latest MICH noise budget | I have measured / calculated the latest
MICH noise budget. It doesn't really
look all that stellar. |
|
|
5035
|
Tue Jul 26 03:15:52 2011 |
Jenne | Update | Locking | Latest MICH noise budget | [Jenne, Rana]
We had another look at the MICH noise
budget tonight. Rana has verified that my |
|
|
5051
|
Thu Jul 28 02:33:04 2011 |
Jenne | Update | Locking | Yarm flashing, but not yet locked | Because I'm too lazy to write a cohenrent
elog right now, here's my notes that I wrote
while working tonight: |
|
|
5233
|
Sun Aug 14 20:04:40 2011 |
Keiko, Anamaria, Jenne, and Kiwamu | Summary | Locking | central part ifo locking plan | GOAL : To lock the central part of ifo
Here is the plan:
|
|
|
5243
|
Mon Aug 15 21:43:29 2011 |
Anamaria and Keiko | Summary | Locking | central part ifo locking project | REFL33 and REFL165 cables were connected
from the AP table to the rack. Cables
on the rack for REFL33I, 33Q, 165I, 165Q |
|
|
6421
|
Thu Mar 15 04:04:23 2012 |
Koji | Configuration | Locking | PRC Matching issues | Kiwamu and Koji
We found that the intra-cavity mode
of the PRC is not round although it was obvious |
|