| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
10993
|
Tue Feb 10 02:55:29 2015 |
Jenne | Configuration | Modern Control | Quacky filters | I discovered that somehow my Wiener filters
that show up in Foton are not the same as
what I have in Matlab-land. |
|
|
10992
|
Tue Feb 10 02:40:54 2015 |
Jenne | Update | LSC | Some locking thoughts on PRMI | [EricQ, Jenne]
We wanted to make the PRMI lock
more stable tonight, which would hopefully |
|
|
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 |
|
|
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 |
|
|
10989
|
Mon Feb 9 08:40:49 2015 |
Steve | Update | SUS | recent earthquake 4.9 | Baja 4.9 m earth quake tripped suspentions,
except ETMX Sus damping recovered. MC is
locking. |
|
|
10988
|
Sun Feb 8 21:54:50 2015 |
rana | Summary | PSL | ISS AOM driver check | This is good
news. It means that the driver probably won't
limit the response of the loop - I expect |
|
|
10987
|
Sat Feb 7 21:30:45 2015 |
Jenne | Update | LSC | PRC aligned | I'm leaving the PRC aligned and locked.
Feel free to unlock it, or do whatever with
the IFO. |
|
|
10986
|
Sat Feb 7 13:34:11 2015 |
Koji | Summary | PSL | ISS AOM driver check | I wanted to check the status of the ISS.
The AOM driver response was measured on Friday
night. |
|
|
10985
|
Fri Feb 6 18:06:18 2015 |
manasa | Update | General | Fiber Optic module for FOL | I pulled out the Fiber Optic Module for
FOL from the rack inside the PSL table enclosure
and modified it. The beat PDs were moved |
|
|
10984
|
Fri Feb 6 15:29:29 2015 |
ericq | Update | CDS | Network Shenanigans | Just now we had another EPICS freeze. The
network was still up; i.e. I could ssh to
chiara and fb, who both seemed to be |
|
|
10983
|
Fri Feb 6 10:03:23 2015 |
Steve | Update | PEM | dusty days |
|
|
|
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: |
|
|
10981
|
Thu Feb 5 15:21:25 2015 |
manasa | Update | General | X endtable work | [EricG, Manasa]
We were at the X end today trying
to couple AUX X light into the fiber. |
|
|
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 |
|
|
10978
|
Wed Feb 4 21:09:43 2015 |
manasa | Update | General | X endtable work scheduled tomorrow | The X end fiber setup will be put together
tomorrow morning. |
|
|
10977
|
Wed Feb 4 21:05:24 2015 |
manasa | Update | General | RF amplifier for ALS | The components of the RF amplifier
box are in place. The RF amplifier box has
been mounted on the IOO rack and the front |
|
|
10976
|
Wed Feb 4 19:21:45 2015 |
Jenne | Update | PEM | Seismometer Vertex is covered | I opened up the spaghetti pot over the
vertex seismometer, and taped the cable to
the slab. The way the cable is coiled, |
|
|
10975
|
Wed Feb 4 19:21:37 2015 |
Koji | Update | ASC | Arm ASS servos now have triggered gain with arm lock status | We had persistent frustration by occasional
unlock during ASSing.
Today, I added triggers to the servo |
|
|
10974
|
Wed Feb 4 18:27:55 2015 |
Koji | Summary | ASC | Xarm ASS fix | Please remember
that Xarm ASS needs FM6 (Bounce filters) |
|
|
10973
|
Wed Feb 4 18:16:44 2015 |
Koji | Update | LSC | Data transfer rate of c1lsc reduced from ~4MB/s to ~3MB/s | c1lsc had 60 full-rate (16kS/s) channels
to record. This yielded the LSC to FB connection
to handle 4MB/s (mega-byte) data rate. |
|
|
10972
|
Wed Feb 4 14:30:05 2015 |
ericq | Update | LSC | ASDC Whitening Gain | At the lunch meeting, we were thinking
about the exess high frequency content of
the MICH control signal, which leads to railing |
|
|
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: |
|
|
10970
|
Tue Feb 3 16:43:48 2015 |
manasa | Update | General | RF amplifier for ALS | I pulled out the RF amplifier box from
the IOO rack again and added the new
RF amplifiers for FOL. |
|
|
10969
|
Tue Feb 3 16:36:33 2015 |
ericq | Update | LSC | CM servo & AO path status | I have removed REFLDC and the SR560 offsetter
from the CM board IN2. Now, analog AS55 I
lives there, for our single arm testing. |
|
|
10968
|
Tue Feb 3 15:20:13 2015 |
Steve, Koji | Update | VAC | Pneumatic pressure is being read again | [Koji, Steve]
Summary
The N2 pressure |
|
|
10967
|
Tue Feb 3 04:07:49 2015 |
Jenne | Update | Modern Control | Measured PRM -> POP QPD TFs | Today (after centering the POP QPD), I
measured the PRM to POP QPD transfer functions.
I am suspicious that this was part of my |
|
|
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: |
|
|
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. |
|
|
10964
|
Mon Feb 2 16:58:56 2015 |
manasa | Update | General | RF amplifier for ALS | Today I was around the IOO rack.
I shutdown the power to the beat
PDs on the PSL table and disconnected the |
|
|
10963
|
Mon Feb 2 12:24:27 2015 |
Jenne | Update | ASC | POP QPD centered | After aligning the PRC, I centered the
POP QPD. |
|
|
10962
|
Sat Jan 31 01:34:12 2015 |
Jenne | Update | LSC | Not able to engage AO path | Nothing earth-shattering today.
A few things of note:
I checked the coherence |
|
|
10961
|
Fri Jan 30 11:37:20 2015 |
manasa | Frogs | Treasure | SP table madness ends | SP table has been a mess because Q and
I had let our SURF leave without cleaning
up. |
|
|
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 |
|
|
10959
|
Fri Jan 30 02:57:03 2015 |
Jenne | Update | Modern Control | First try with PRCL ASC Wiener filtering | [Aside - How do you rotate plots in the
new elog? It's showing them correctly
in the attachments list below the entry, |
9x |
|
10958
|
Thu Jan 29 17:20:58 2015 |
manasa | Configuration | IOO | X Trans Table less crazy but not enough yet | [Koji, Manasa]
We cleared up some optics
and optomechanics at the X end table that |
|
|
10957
|
Thu Jan 29 16:14:10 2015 |
manasa | Update | General | Updated to do list for FOL | Since there will be some work that supposedly
will involve moving stuff on the table and
racks; here is the updated to-do list for |
|
|
10956
|
Thu Jan 29 11:59:48 2015 |
manasa | Update | General | Beat note frequency discrepancy | Below is the set of plots comparing measurements
for the green and IR beat notes frequencies.
The measurements were made on the spectrum |
|
|
10955
|
Thu Jan 29 10:14:21 2015 |
manasa | Update | General | X end space issues | It is certain that we have space issues
at the X end that has been preventing us
from sticking in a lens to couple light into |
|
|
10954
|
Thu Jan 29 09:50:47 2015 |
manasa | Update | Electronics | IOO rack amplifier panel | The RF amplifier panel on the IOO rack
(Attachment 1) will be used to also hold
the RF amplfiers for the frequency counters. |
|
|
10953
|
Thu Jan 29 04:27:35 2015 |
ericq | Update | LSC | CARM on REFL11 | [ericq, Diego]
Tonight, |
|
|
10952
|
Wed Jan 28 23:53:24 2015 |
Koji | Summary | ASC | Xarm ASS fix | X-Arm
ASS was fixed.
ASS_DITHER_ON.snap was updated so |
|
|
10951
|
Wed Jan 28 17:39:17 2015 |
Koji | Configuration | IOO | X Trans Table less crazy but not enough yet | The X-end IR Trans path was cleaned
up.
I have been investigating the Xarm |
|
|
10950
|
Wed Jan 28 17:32:26 2015 |
Koji | Update | PSL | PMC aligned | PMC aligned.
PMC Trans increased from 0.740
to 0.782 |
|
|
10949
|
Wed Jan 28 14:19:02 2015 |
rana | Update | LSC | Transitioned DARM to AS55Q | Why AS55/(TRX + TRY) instead of just TRX?
Isn't (TRX+TRY) controlled by CARM? |
|
|
10948
|
Wed Jan 28 08:53:01 2015 |
Steve | Update | PEM | Seismometer Vertex is covered |
|
|
|
10947
|
Wed Jan 28 03:01:24 2015 |
Jenne | Update | LSC | Transitioned DARM to AS55Q | [Jenne, Diego]
Tonight
we were able to transition DARM from DC transmission |
|
|
10946
|
Tue Jan 27 21:33:39 2015 |
Koji | Update | ASC | ASS retuned | I checked the situation of ASS. I wanted
to know how much we are away from the maximum
transmittion. |
|
|
10945
|
Tue Jan 27 17:58:21 2015 |
Jenne | Configuration | Treasure | Welcome, Donatella! | Welcome to your new abode, Donatella! |
|
|
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 |
|
|
10943
|
Tue Jan 27 14:00:05 2015 |
Jenne | Update | Modern Control | PRMI locked | PRMI is locked on sideband, starting ~4
minutes ago, to collect ASC/seismic data
for feedforward. |
|