| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
6909
|
Tue Jul 3 19:04:59 2012 |
Jamie | Update | Green Locking | Laseroptik dichroic optics received | I put them in the "visible optics"
drawer of the newish, metal optics cabinet
with the thin drawers down the Y arm. |
|
|
6942
|
Mon Jul 9 05:15:46 2012 |
yuta | Update | Green Locking | locked MI while ALS using ASDC | I locked MI while both arm length are stabilized
at IR resonance. This could be done using
DC READOUT, |
|
|
6966
|
Thu Jul 12 11:55:00 2012 |
Jenne | Update | Green Locking | New BS mounts for PSL beats - Y is finished | Yuta and I bought some new BS mounts so
that we could use the 4th port of the beamsplitters
which are combining the PSL green and the |
|
|
7002
|
Mon Jul 23 13:30:06 2012 |
Jenne | Update | Green Locking | Yarm ALS laser is funny / dying | Jamie and I were doing some locking, and
we found that the Yarm green wasn't locking.
It would flash, but not really stay locked |
|
|
7004
|
Mon Jul 23 18:01:30 2012 |
Jenne | Update | Green Locking | Yarm ALS laser is funny / dying | I turned the Yend laser back on....it
hasn't turned itself off yet, but I'm watching
it. As long as we leave the shutter |
|
|
7007
|
Mon Jul 23 18:41:15 2012 |
Jamie | Update | Green Locking | ALS_END.mdl model added for end station green ALS channels | The end sus models (c1scx and c1scy) both
contain some ALS stuff. This stuff
could maybe be moved to their own models, |
|
|
7009
|
Mon Jul 23 19:00:26 2012 |
Koji | Update | Green Locking | ALS_END.mdl model added for end station green ALS channels | This is a good modification. We just need
to check how the ALS scripts are affected.
|
|
|
7180
|
Tue Aug 14 16:19:12 2012 |
Jenne | Update | Green Locking | Xend doubling crystal heater unplugged, replugged | I went down to the Xend table to look at
it to understand Steve's proposal, and I
noticed that the doubling crystal's heater's |
|
|
7241
|
Tue Aug 21 01:59:33 2012 |
Jenne | Update | Green Locking | Green locking needs help! | The green beam for the Xarm is flashing
a pretty nice 00 mode, but isn't catching
lock. |
|
|
7261
|
Thu Aug 23 21:53:06 2012 |
Jenne | Update | Green Locking | Xgreen still wouldn't lock | [Jenne, Jamie]
We took a look at the Xend green,
and we weren't able to make it lock. |
|
|
7266
|
Thu Aug 23 22:54:32 2012 |
Jenne | Update | Green Locking | Xgreen still wouldn't lock |
|
|
|
7716
|
Thu Nov 15 21:52:48 2012 |
Den, Ayaka | Update | Green Locking | yarm locked | We aligned and locked Y arm for green:
installed camera on PSL
to monitor green transmission
aligned |
|
|
7718
|
Fri Nov 16 03:12:39 2012 |
Ayaka, Den | Update | Green Locking | xarm locked | We aligned and locked xarm for green.
|
|
|
7719
|
Fri Nov 16 09:57:57 2012 |
Jenne | Update | Green Locking | xarm locked |
|
|
|
7731
|
Tue Nov 20 11:40:19 2012 |
rana | Configuration | Green Locking | End table upgrade for auxiliary green laser : ETMX layout on new table |
Mounts:
No more mounts using the |
|
|
8259
|
Fri Mar 8 15:27:42 2013 |
yuta | Update | Green Locking | PSL green shutter installed | [Manasa, Yuta]
Mechanical shutter for PSL green is |
|
|
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). |
|
|
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 |
|
|
|
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 |
|
|
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 |
|
|
8365
|
Thu Mar 28 07:58:15 2013 |
Steve | Update | Green Locking | NPRO repair |
|
|
|
8569
|
Tue May 14 01:56:20 2013 |
Jenne | Update | Green Locking | Xend Green tweaked | I locked the Xarm on green. At the
PSL table, I adjusted the steering mirror
to get the beam centered on the GTRX DC PD. |
|
|
8570
|
Tue May 14 02:19:13 2013 |
Koji | Update | Green Locking | Xend Green tweaked | Note that I'm supposed to return one of
the two green beat PDs and the power supply.
|
|
|
8607
|
Tue May 21 18:18:23 2013 |
Manasa | Update | Green Locking | Xend Green aligned | X arm aligned to green.
Aligned the X arm to IR.
Used steering mirrors to align the |
|
|
8610
|
Tue May 21 23:29:57 2013 |
Manasa | Update | Green Locking | Xend Green aligned | X-green and PSL green have been aligned
so that they interfere at the beat PD for
X. |
|
|
8651
|
Tue May 28 19:35:17 2013 |
Manasa | Update | Green Locking | Still searching for the X green beat note | Procedure
1. Aligned X-arm to IR.
2. Aligned green to the X-arm. |
|
|
8653
|
Thu May 30 01:02:41 2013 |
Manasa | Update | Green Locking | Found it! | X green beat note
found! |
|
|
8666
|
Mon Jun 3 21:09:55 2013 |
Manasa | Update | Green Locking | X green beatnote through beatbox | I connected the X green beat PD output
back to the beatbox, did the usual PSL alignment
for green and searched for the beat note |
|
|
8691
|
Sat Jun 8 00:24:11 2013 |
Annalisa | Update | Green Locking | Y arm locked with green but bad mode matching | [Annalisa, Nic]
After connecting the PD with the
reflection from the arm to the PDH |
|
|
8692
|
Mon Jun 10 21:39:26 2013 |
Annalisa | Update | Green Locking | Y arm locked with green but bad mode matching |
Still no good locking! |
|
|
8693
|
Tue Jun 11 10:00:54 2013 |
nicolas | Update | Green Locking | Y arm locked with green but bad mode matching |
|
|
|
8694
|
Tue Jun 11 22:16:56 2013 |
Manasa | Summary | Green Locking | ALS for X arm | I discussed with Yuta about the ALS servo
and phase tracker and found that there was
a lot of information lying around from last |
|
|
8695
|
Wed Jun 12 01:56:58 2013 |
Annalisa | Update | Green Locking | Y arm locked with green but bad mode matching |
For the mode matching calculation
I was using the ETMY focal length that I |
|
|
8696
|
Wed Jun 12 22:48:10 2013 |
Annalisa | Update | Green Locking | Y arm locked with green but bad mode matching | After restoring alignment I could see again
strong 00 flashes (about 250-300 counts on
ALS-TRY). So I locked the arm with IR and |
|
|
8697
|
Wed Jun 12 23:06:33 2013 |
Jenne | Update | Green Locking | Y arm locked with green but bad mode matching | Hmmm. You seem to be saying that more light
is reflected than is injected. Is this a
units problem? Or was some IR on the power |
|
|
8698
|
Thu Jun 13 00:35:23 2013 |
Manasa | Update | Green Locking | Y arm locked with green but bad mode matching | > Hmmm. You seem to be saying that more light
is reflected than is injected. Is this a
units problem? Or was some IR on the power |
|
|
8699
|
Thu Jun 13 10:57:36 2013 |
Annalisa | Update | Green Locking | Y arm locked with green but bad mode matching | > > Hmmm. You seem to be saying that more
light is reflected than is injected. Is this
a units problem? Or was some IR on the power |
|
|
8701
|
Thu Jun 13 16:01:48 2013 |
nicolas | Update | Green Locking | Y arm locked with green but bad mode matching |
|
|
|
8703
|
Thu Jun 13 22:31:12 2013 |
Manasa | Summary | Green Locking | X arm ALS | Stabilized ALS
and beat frequency sweep realized. |
|
|
8704
|
Thu Jun 13 23:28:40 2013 |
Annalisa | Update | Green Locking | Y arm locked with green but bad mode matching |
|
|
|
8708
|
Fri Jun 14 07:06:19 2013 |
Koji | Summary | Green Locking | X arm ALS | It's nice that we are now able to scan
the cavity again. We got close to PRMI+one
arm one step further. |
|
|
8709
|
Fri Jun 14 17:15:45 2013 |
Manasa | Update | Green Locking | c1als model edited | I have edited the daq channels in c1als
model.
Added: DQ channels for the error |
|
|
8714
|
Mon Jun 17 23:12:19 2013 |
Manasa | Update | Green Locking | can't get IR to resonate | What I did:
1. Followed the same procedure to
enable ALS (http://nodus.ligo.caltech.edu:8080/40m/8703) |
|
|
8715
|
Mon Jun 17 23:53:03 2013 |
Annalisa | Update | Green Locking | Y arm locked on green!! | Y
arm locked on green carrier in 00 mode!
It
locked at almost 280 cts, and the transmitted |
|