| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
8721
|
Wed Jun 19 01:45:49 2013 |
Manasa | Update | Green Locking | Beat frequency sweep for 3FSR | Measurements:
1. Calibrating offset : |
|
|
8738
|
Mon Jun 24 16:06:17 2013 |
Manasa | Summary | Green Locking | ALS model | I am working on the basic
ALS servo model. The simulink model for the
same is attached. The loop is not yet complete |
|
|
8751
|
Wed Jun 26 00:15:51 2013 |
Annalisa | Update | Green Locking | ETMY - green locking and beat note setup | [Koji, Annalisa]
Alignment improving
The alignment of the green |
|
|
8754
|
Wed Jun 26 11:32:11 2013 |
Manasa | Update | Green Locking | c1als model edited | I have added more DAQ channels to the c1als
model. Installed and restarted the model
on c1ioo. Frame builder restarted. |
|
|
8760
|
Wed Jun 26 23:32:15 2013 |
Manasa | Update | Green Locking | c1als model edited | I have modified the ALS model to now include
PHASE_OUT calibration for both X and Y. MEDM
screen has not been edited to include these |
|
|
8761
|
Thu Jun 27 02:44:33 2013 |
rana | Update | Green Locking | c1als model edited | Could be that this is OK, but it
doesn't yet make sense to me. Can you please
explain in words how this manages to apply |
|
|
8768
|
Thu Jun 27 17:41:08 2013 |
Annalisa | Update | Green Locking | ETMY -beat note found! |
Y |
|
|
8769
|
Thu Jun 27 17:49:17 2013 |
manasa | Update | Green Locking | c1als model edited |
|
|