| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
8290
|
Wed Mar 13 21:04:37 2013 |
Jenne | Update | Green Locking | PSL green cleaned up | Both X and Y green are aligned such that
the arm beams hit the broadband PD.
Also, the 4th port of the combining BS for |
|
|
8291
|
Thu Mar 14 04:20:54 2013 |
Jenne | Update | Green Locking | Ybeat attempt | I dedicated my evening to trying to get
the Ygreen beatnote (the idea being to then
get the Xgreen beatnote). |
|
|
8292
|
Thu Mar 14 11:51:14 2013 |
Jamie | Update | General | Beatbox upgraded with output whitening, reinstalled |
|
|
|
8293
|
Thu Mar 14 13:38:29 2013 |
Jenne | Update | Green Locking | PSL green cleaned up | I ran a cable to the GTRX camera.
It is now input #2. The videoswitch
script input naming is modified to match |
|
|
8294
|
Thu Mar 14 16:41:48 2013 |
Jenne | Update | Green Locking | Yarm ALS laser is funny / dying |
|
|
|
8295
|
Thu Mar 14 16:56:16 2013 |
Chloe | Update | | QPD Circuit Design | I have sketched out the circuit design
for the QPD. However, it seems like even
when using a different opamp configuration, |
|
|
8296
|
Thu Mar 14 17:31:57 2013 |
Manasa | Update | Green Locking | X arm green locked in TEM00 |
|
|
|
8297
|
Thu Mar 14 20:22:33 2013 |
Jenne | Update | Green Locking | Xbeat attempt | I aligned the Xgreen and PSL green to overlap
on the X beat PD, and reconnected the splitter
which combines the X and Y beat signals and |
|
|
8298
|
Fri Mar 15 01:57:02 2013 |
Jenne | Update | Green Locking | X arm green locked in TEM00 | This work earlier today had required moving
the harmonic separator back closer to its
original position, so that the green could |
|
|
8299
|
Fri Mar 15 02:14:27 2013 |
Jenne | Update | CDS | Simulink linking to wrong library part | Jamie and I discovered a problem with Matlab/Simulink
earlier today.
In the end suspension models, there |
|
|
8300
|
Fri Mar 15 02:19:01 2013 |
Jenne | Update | Green Locking | Yarm ALS laser is funny / dying | I turned the laser back on around 1am.
This is still happening, although right now
it is turning off more often than before, |
|
|
8301
|
Fri Mar 15 15:26:13 2013 |
Koji | Update | Green Locking | Yarm ALS laser is funny / dying | I took a look at the laser. It is probably
the LD TEC (DTEC) failure.
As the temperature of the LD (DTMP) |
|
|
8307
|
Mon Mar 18 14:58:15 2013 |
Steve | Update | Green Locking | repair or replace dead NPRO |
JDSU can repair the Lightwave
M126-1064-700 NPRO, sn 415 They do |
|
|
8309
|
Tue Mar 19 10:30:00 2013 |
steve | Update | SAFETY | crane inspection 2013 |
Professional crane inspector: Fred
Goodbar found two small leaks at the Vertex |
|
|
8310
|
Tue Mar 19 14:21:57 2013 |
Manasa | Update | 40m Upgrading | Endtable upgrade : INVENTORY | THE INVENTORY FOR ETMY ENDTABLE.
We definitely need the polaris mirror
mounts and cylindrical lenses. As for the |
|
|
8311
|
Tue Mar 19 17:00:14 2013 |
Steve | Update | VAC | large window quote of Cascade | Optical quality 6.5" OD window specs
and quotes for vacuum view ports and optical
table enclosure are on the 40m wiki_ Aux |
|
|
8312
|
Tue Mar 19 19:19:50 2013 |
Jenne | Update | 40m Upgrading | Endtable upgrade : INVENTORY | Does "Ready (in stock)" for the
base plates mean in stock at the company,
or in hand and already here in the |
|
|
8313
|
Tue Mar 19 20:24:56 2013 |
Annalisa | Update | Auxiliary locking | Auxiliary laser on PSL table | I moved the auxiliary laser from
the ITMY table to the PSL table and installed
all the optics (mirrors and lenses) to steer |
|
|
8314
|
Wed Mar 20 08:59:24 2013 |
Steve | Update | PEM | air cond maitenance is today | Outside air quality at 8:30am
1.1 million of 0.5 micron particles cf /
min with MET counter #2 |
|
|
8315
|
Wed Mar 20 14:00:21 2013 |
Steve | Update | 40m Upgrading | Endtable upgrade | As discussed at the 40m meeting: Koji,
Manasa and Steve
|
|
|
8316
|
Wed Mar 20 14:44:47 2013 |
Jamie | Update | Optics | updated calculations of PRC/SRC g-factors and ARM mode matching | Below are new alamode calculations of the
PRC and SRC g-factors and arm mode matchings.
These include fixes to the ABCD matrices |
|
|
8317
|
Wed Mar 20 14:52:09 2013 |
Manasa | Update | SAFETY | MC trans RFPD missing | PDA255 at the MC transmission end is missing
and whoever had removed it earlier has left
the |
|
|
8318
|
Wed Mar 20 15:51:54 2013 |
Manasa | Update | 40m Upgrading | Endtable upgrade |
|
|
|
8320
|
Thu Mar 21 08:11:53 2013 |
Steve | Update | 40m Upgrading | ETMY table swap |
|
|
|
8321
|
Thu Mar 21 08:46:46 2013 |
Manasa | Update | 40m Upgrading | ETMY table swap | Yes! We are swapping.
I'll be there very soon! |
|
|
8322
|
Thu Mar 21 09:53:46 2013 |
Annalisa | Update | Locking | Finding the beat note | Yesterday I tried to find the beat
note between the main PSL and the auxiliary
NPRO, but I didn't :( |
|
|
8323
|
Thu Mar 21 10:19:28 2013 |
Koji | Update | Locking | Finding the beat note | Give us more info on the elog:
What PD are you using? How much power |
|
|
8324
|
Thu Mar 21 10:29:12 2013 |
Manasa | Update | Computers | Computers down since last night | I'm trying to figure out what went wrong
last night. But the morning status...the
computers are down. |
|
|
8325
|
Thu Mar 21 12:04:05 2013 |
Manasa | Update | Computers | Fixed | All FE computers are back.
Restart procedure:
0a. Restart frame builder: |
|
|
8326
|
Thu Mar 21 12:33:51 2013 |
rana | Update | Computers | Fixed | Please stop power cycling computers. This
is not an acceptable operation (as Jamie
already wrote before). When you don't know |
|
|
8327
|
Thu Mar 21 13:11:42 2013 |
Annalisa | Update | Locking | Finding the beat note |
|
|
|
8328
|
Thu Mar 21 13:50:08 2013 |
Jamie | Update | Locking | incident angles | Is there a reason to use non-45 degree
incident angles on the steering mirrors between
the laser and the PD? I would always |
|
|
8329
|
Thu Mar 21 14:02:45 2013 |
Annalisa | Update | Locking | incident angles |
|
|
|
8330
|
Thu Mar 21 17:06:34 2013 |
Steve | Update | 40m Upgrading | ETMY table is out |
|
|
|
8331
|
Fri Mar 22 01:28:56 2013 |
Manasa | Update | Lasers | Beam profile of NPRO from ATF | The NPRO from ATF has been installed on
the POY table.
I have been making measurements to |
|
|
8333
|
Fri Mar 22 23:23:38 2013 |
Annalisa | Update | Locking | Beat note still missing | [Annalisa, Manasa, Koji]
I updated the setup for the beat
note. The main reason is that I needed to |
|
|
8334
|
Mon Mar 25 09:52:22 2013 |
Jenne | Update | Computers | c1lsc mxstream won't restart | Most of the front ends' mx streams weren't
running, so I did the old mxstreamrestart
on all machines (see elog |
|
|
8335
|
Mon Mar 25 11:42:45 2013 |
Jamie | Update | Computers | c1lsc mx_stream ok | I'm not exactly sure what the problem was
here, but I think it had to do with a stuck
mx_stream process that wasn't being killed |
|
|
8336
|
Mon Mar 25 15:01:33 2013 |
Manasa | Update | Locking | TT1 drift |
|
|
|
8337
|
Mon Mar 25 15:24:41 2013 |
rana | Update | Locking | TT1 drift |
I doubt that it has truly disappeared.
Can you please make a measurement of it and |
|
|
8338
|
Mon Mar 25 16:51:43 2013 |
Chloe | Update | | Final QPD Circuit Design | This is the final version of the QPD circuit
I'm going to build. After playing around
with the spatial arrangement, this should |
|
|
8339
|
Mon Mar 25 16:51:59 2013 |
Jenne | Update | Optics | updated calculations of PRC/SRC g-factors and ARM mode matching | I think we like the idea of flipping SR2
better than SR3 for the same ghost beam reasons
as PR2 is better than PR3. There isn't |
|
|
8340
|
Mon Mar 25 18:07:31 2013 |
Steve | Update | 40m Upgrading | ETMY table is out |
|
|
|
8341
|
Mon Mar 25 18:42:38 2013 |
Manasa | Update | 40m Upgrading | Endtable upgrade for auxiliary green laser : Timeline | Endtable upgrade - timeline and progress
chart. End table upgrade wiki page updated.
|
|
|
8342
|
Mon Mar 25 18:58:09 2013 |
Albert Yang | Update | optical tables | Optical Table Toolboxes | For those of you who spend annoying amounts
of time looking for tools, fear no more.
Toolboxes for each optical table are coming! |
|
|
8346
|
Mon Mar 25 23:27:26 2013 |
Chloe | Update | | QPD Circuit | In order to test the mount vibrations,
I will likely try and make a different circuit
work (with the summing/subtracting on an |
|
|
8347
|
Tue Mar 26 00:06:37 2013 |
Jenne | Update | Locking | AS beam put back on PD | [Jenne, Gabriele]
We aligned MICH (first locked Yarm,
but didn't optimize since we don't have TRY, |
|
|
8348
|
Tue Mar 26 00:17:47 2013 |
Jenne | Update | Locking | REFL pickoff fraction | To see how much of the light that comes
out of the REFL port actually goes to the
PDs, I measured the power immediately after |
|
|
8349
|
Tue Mar 26 01:40:49 2013 |
Koji | Update | IOO | Tuning MC length/FSR | I'm still waiting for the follow-up analysis
of the modulation freq tuning. |
|
|
8350
|
Tue Mar 26 08:50:02 2013 |
Steve | Update | General | janitor day | Keven, our janitor accidentally pushed
the main entry door laser emergency stop
switch. |
|