| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
10902
|
Thu Jan 15 03:18:11 2015 |
diego | Update | LSC | UGF servo now linear again | The UGF servos were recommissioned today:
suitable values of frequency,
excitation, phases and gain were found;
the |
|
|
10911
|
Fri Jan 16 04:14:05 2015 |
diego | Update | LSC | UGF servo now linear again | UGF Servos' commissioning still going
on, updates of today:
on Rana's suggestion, |
|
|
10916
|
Fri Jan 16 20:37:52 2015 |
diego | Update | LSC | UGF servo now linear again | I found an error in the model of the UGF
servos, I have now corrected it; for future
reference, now the division between TEST2 |
|
|
10926
|
Tue Jan 20 21:58:04 2015 |
diego | Update | LSC | Some locking, may need to modify UGF part again |
|
|
|
10930
|
Thu Jan 22 15:35:41 2015 |
diego | Update | SUS | Bounce/Roll Measurements | I measured the bounce/roll frequencies
for all the optics, and updated the Mechanical
Resonances wiki page accordingly. |
|
|
10931
|
Thu Jan 22 18:36:11 2015 |
diego | Update | IOO | MC Flashes | I've been looking into the data of
Jan 06 and Jan 15 taken during daytime, as
the night before we left the PRC aligned |
|
|
10932
|
Thu Jan 22 22:15:30 2015 |
diego | Update | SUS | Centered OpLevs | [Diego, Jenne]
We centered the OpLevs for ITMX
and ITMY. |
|
|
10944
|
Tue Jan 27 15:45:26 2015 |
diego | Update | LSC | Small tweaks to the locking | The UGF Servo medm page has been updated
to reflect the last changes, namely the return
of the sum of squares and the disappearance |
|
|
10960
|
Fri Jan 30 03:12:15 2015 |
diego | Update | LSC | CARM on REFL11I | [Jenne, Diego]
Tonight we continued following
the plan of last night: perform the transition |
|
|
10965
|
Mon Feb 2 22:59:49 2015 |
diego | Update | LSC | CM board input switched to AS55 | [Diego, Jenne]
We just changed the input to the
CM board from REFL11 to AS55. |
|
|
10966
|
Tue Feb 3 04:01:55 2015 |
diego | Update | LSC | CM servo & AO path status | [Diego, Jenne]
Tonight we worked on the CM board
and AO path: |
|
|
10971
|
Wed Feb 4 04:51:14 2015 |
diego | Update | LSC | CARM Transition to REFL11 using CM_SLOW Path | [Diego, Jenne, Eric]
Tonight we kept on following our
current strategy for locking the PRFPMI: |
|
|
10979
|
Thu Feb 5 04:35:14 2015 |
diego | Update | LSC | CARM Transition to REFL11 using CM_SLOW Path | [Diego, Eric]
Tonight was a sad night... We continued
to pursue our strategy, but with very poor |
|
|
10982
|
Fri Feb 6 03:21:17 2015 |
diego | Update | LSC | CARM Transition to REFL11 using CM_SLOW Path | [Diego, Jenne]
We kept struggling with the PRMI,
although it was a little better than yesterday: |
|
|
10990
|
Mon Feb 9 17:23:17 2015 |
diego | Update | Computer Scripts / Programs | New laptops | I forgot to elog about these ones, my bad...
The new/updated laptops are giada, viviana
and paola; paola is already in the lab, while |
|
|
10991
|
Mon Feb 9 17:47:17 2015 |
diego | Update | LSC | CM servo & AO path status | I wrote the script with the recipe we used,
using the Yarm and AS55 on the IN2 of the
CM board; however, the steps where the offset |
|
|
150
|
Fri Nov 30 20:13:57 2007 |
dmass | Summary | General | HeNe UniPhase Laser | Data for the Uniphase 1.9 mW HeNe laser (labeled:
"051507 From ISCT-BS") SN: 1284131 Model:
1103P
|
|
|
192
|
Sun Dec 16 16:52:40 2007 |
dmass | Update | Computers | Computer on the end Fixed | I had Mike Pedraza look at the computer on
the end (tag c21256). It was running funny,
and turns out it was a bad HD.
|
|
|
4978
|
Fri Jul 15 19:00:18 2011 |
dmass | Metaphysics | elog | Crashes | Elog crashed a couple times, restarted
it a couple times. |
|
|
15387
|
Tue Jun 9 15:02:56 2020 |
eHang | Update | BHD | Astigmatism and scattering plots | Using the updated AOI's for the LO
path: (4.8, 47.9, 2.9, 4.5) deg for (LO1,
LO2, LO3, LO4), we obtain the following results. |
|
|
7294
|
Tue Aug 28 11:28:31 2012 |
ericq | Update | PSL | PMC alignment going bad |
|
|
|
7295
|
Tue Aug 28 16:27:22 2012 |
ericq | Update | PSL | PBS and Half Wave plates introduced | [Jenne, Eric]
We installed a Half Wave Plate ->
Polarized Beam Splitter -> Half Wave Plate |
|
|
7297
|
Tue Aug 28 17:16:54 2012 |
ericq | Update | PSL | Power reduced! | We have now reduced the power being
input to the MC from 1.25W to 10mW, and changed
out the MC refl BS for a mirror. |
|
|
7306
|
Wed Aug 29 11:47:21 2012 |
ericq | Update | VAC | Venting | [Steve, Eric]
I've been helping Steve vent this
morning. The following things were done (from |
|
|
7308
|
Wed Aug 29 17:02:41 2012 |
ericq | Update | PSL | Power reduced! |
|
|
|
7337
|
Tue Sep 4 13:50:26 2012 |
ericq | Update | PSL | PMC Realigned, power adjusted | I adjusted the PMC alignment this
morning, brought the transmission up to 0.83V.
After the lunch meeting, we found |
|
|
7377
|
Wed Sep 12 20:08:51 2012 |
ericq | Update | Electronics | AS beam scan |
|
|
|
7958
|
Tue Jan 29 20:28:11 2013 |
ericq | Update | General | Early work on Mirror Mounts | [Q, Chloe]
Chloe has been to the lab twice to
start up her investigations in acoustic noise |
|
|
9442
|
Wed Dec 4 21:41:09 2013 |
ericq | Update | Green Locking | Green PDH Characterization | My job right now is to characterize
the green PDH loops on each arm. Today, Jenne
took me around and pointed at the optics |
|
|
9447
|
Fri Dec 6 12:45:51 2013 |
ericq | Update | Green Locking | Green PDH Characterization | Yesterday, made a slew of measurements
on the X-arm when locked on green. By tweaking
the temperature loop offset and the green |
|
|
9459
|
Thu Dec 12 21:23:15 2013 |
ericq | Update | Green Locking | Better Xarm OLTF | With the newly repaired PDH board, I spent
some time with the x arm green PDH loop.
I found it SO MUCH EASIER to measure the |
|
|
9496
|
Thu Dec 19 19:45:12 2013 |
ericq | Update | Green Locking | X-Arm Green PDH Loop Stuff | With the fixed servo box, I remeasured the
OLTF, the servo, and the low pass filter
between the mixer output and servo input. |
|
|
9539
|
Wed Jan 8 16:08:52 2014 |
ericq | Summary | LSC | Effect of PRC length mismatch on error signals | [ericq,Gabriele]
So, we want an relatively quick measurement
of the PRC length error (with sign!) at the |
|
|
9544
|
Thu Jan 9 17:58:31 2014 |
ericq | Summary | LSC | Effect of PRC length mismatch on error signals | [ericq, Gabriele, Manasa]
We wanted to perform the PRC
length measurement today with an AS11 signal, |
|
|
9560
|
Thu Jan 16 21:38:13 2014 |
ericq | Update | LSC | Repeat of PRC length measurement | [ericq,Jenne]
Since we don't have agreement between
the measurements we made the other day and |
|
|
9566
|
Wed Jan 22 16:36:45 2014 |
ericq | Update | Electronics | RF distribution box power button fail |
|
|
|
9608
|
Thu Feb 6 16:41:31 2014 |
ericq | Update | General | In-Vac Alignment | [Manasa, ericq]
Both arms |
|
|
9609
|
Fri Feb 7 12:43:12 2014 |
ericq | Update | General | In-Vac Alignment | [ericq]
|
|
|
9612
|
Fri Feb 7 13:30:25 2014 |
ericq | Update | General | In-Vac Alignment |
|
|
|
9614
|
Sat Feb 8 15:14:18 2014 |
ericq | Update | LSC | PRM Sideband Splitting | [ericq]
Today, I kicked the PRM to see the
sideband splitting in POP110. |
|
|
9627
|
Wed Feb 12 14:05:16 2014 |
ericq | Update | SUS | PRM Oplev Checked Out | [ericq]
Steve fixed the PRM oplev pointing.
I turned on the loops and measured the OLG, |
|
|
9637
|
Fri Feb 14 02:09:55 2014 |
ericq | Update | Electronics | Transmon QPD whitening | [Quick post, will follow up with
further detail later. Excuse my sleepy ELOG
writing] |
|
|
9642
|
Mon Feb 17 20:35:19 2014 |
ericq | Update | Electronics | Transmon QPD whitening | My apologies for all of that crap I left
at the Y-end... I cleaned the rest of it
up today. |
|
|
9654
|
Wed Feb 19 11:00:16 2014 |
ericq | Update | LSC | Some Simulation Efforts | Q EDIT: THIS
IS WRONG. I LOCKED PRC ON THE CARRIER
As
Koji measured the other day: MICH and |
|
|
9656
|
Wed Feb 19 14:14:46 2014 |
ericq | Update | LSC | Some Simulation Efforts | Q EDIT: THIS
IS WRONG. I LOCKED PRC ON THE CARRIER
Koji
noted oddities in the sensing matrix results |
|
|
9657
|
Wed Feb 19 16:42:08 2014 |
ericq | Update | LSC | Some Simulation Efforts | Disregard previous
ELOGs, I had the PRC locked on carrier |
|
|
9660
|
Fri Feb 21 12:45:57 2014 |
ericq | Update | LSC | Equivalent Displacement Noise from QPD Dark Noise in SQRTINV | EQ UPDATE: Measured it wrong the first
time, fixed now.
I measured the spectra of the SQRTINV |
|
|
9670
|
Tue Feb 25 14:48:49 2014 |
ericq | Update | LSC | Changing PRCL offset changes REFL 165 degeneracy | After speaking with Jenne and Gabriele,
I did a little bit of simulating based on
my earlier code that looked at the angle |
|
|
9671
|
Tue Feb 25 16:07:33 2014 |
ericq | Update | LSC | Changing PRCL offset changes REFL 165 degeneracy | And glossing over the MICH offset,
here's the PRC offset plots in displacement,
rather than radians. |
|
|
9692
|
Wed Mar 5 16:27:51 2014 |
ericq | Update | LSC | Preliminary Arm Loss Measurements | I measured the arm cavity losses as Kiwamu
did way back in ELOG
5074. |
|