| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
8969
|
Tue Aug 6 07:52:58 2013 |
manasa | Update | General | Ready to pump down | I did an alignment check of the IFO before
we start pumping down.
Arms were locked. PRM and SRM were |
|
|
8968
|
Mon Aug 5 19:10:01 2013 |
Koji | Update | CDS | Choosing LO Amplitudes and Frequencies | - I suppose the green transmission paths
were thoroughly inspected and aligned in
prior to the measurement |
|
|
8967
|
Mon Aug 5 18:48:44 2013 |
gautam | Configuration | endtable upgrade | Full range calibration of PZT mounted mirrors for Y-endtable | I
had prepared two more PZT mounted mirrors
for the Y-end some time back. These are: |
|
|
8966
|
Mon Aug 5 18:18:32 2013 |
gautam | Update | CDS | Choosing LO Amplitudes and Frequencies | In
order to decide what frequencies to dither
the 4 degrees of freedom (M1-pitch&yaw, |
|
|
8965
|
Mon Aug 5 18:02:34 2013 |
manasa | Update | General | Close up list checked |
Center |
|
|
8964
|
Mon Aug 5 11:53:45 2013 |
Evan | Update | ISS | CTN Servo - Explicit Requirement and Proposed Servo | I goofed on the transfer function requirement
by not giving you the plant transfer function,
which looks to be about 0.014 V/V, independent |
|
|
8963
|
Mon Aug 5 10:50:48 2013 |
Steve | Update | VAC | RGA background | RGA background at day 12 of this
vent . The maglev is pumping on the rga through
VM2 |
|
|
8962
|
Fri Aug 2 22:51:10 2013 |
Jenne | Update | General | All vent tasks complete, just need oplev check | [Manasa, Koji, Jenne]
We went into the BS and IOO chambers,
and aligned the green beams such that they |
|
|
8961
|
Fri Aug 2 21:59:36 2013 |
Charles | Update | ISS | Finalized ISS Schematic (hopefully) | Attached is the finalized schematic. The
general circuit topology should remain the
same from this point forward, although individual |
|
|
8960
|
Fri Aug 2 17:50:10 2013 |
Jenne | Update | General | PR3 wedge angle adjusted | [Jenne, Manasa, Koji]
Earlier today, we locked and aligned
both the X and Y arms. |
|
|
8959
|
Thu Aug 1 22:58:45 2013 |
Charles | Update | ISS | CTN Servo - Explicit Requirement and Proposed Servo | In PSL
elog 1270, Evan elucidated the explicit
requirements for the CTN ISS board. Essentially, |
|
|
8958
|
Thu Aug 1 22:49:31 2013 |
manasa | Update | General | Green status after PR3 flipping investigated | [EricQ, Koji, Manasa]
We opened the BS chamber to check
the status of the green beams. The X green |
|
|
8957
|
Thu Aug 1 21:28:09 2013 |
gautam | Update | CDS | Slow channels set-up in ALS | The following
slow channels have been added and are now |
|
|
8956
|
Thu Aug 1 20:58:56 2013 |
gautam | Update | CDS | New model for endtable PZTs-MEDM Screens setup |
I |
|
|
8955
|
Thu Aug 1 18:55:20 2013 |
Alex Cole | Update | Electronics | Preliminary Photodetector Frequency Reponse Measurements |
|
|
|
8954
|
Thu Aug 1 16:33:39 2013 |
Sujan | Update | PEM | Guralp2 seismometer installed at North side of POX table | 1)Power to the seismometers were turned
down,
2)Guralp2 was moved to North side |
|
|
8953
|
Thu Aug 1 16:03:52 2013 |
Steve | Update | General | reopen BS & IOO |
|
|
|
8952
|
Thu Aug 1 15:28:44 2013 |
gautam | Update | CDS | New model for endtable PZTs-problem solved |
|
|
|
8951
|
Thu Aug 1 15:06:59 2013 |
jamie | Update | CDS | New model for endtable PZTs |
|
|
|
8950
|
Thu Aug 1 13:09:17 2013 |
gautam | Update | CDS | New model for endtable PZTs-procedure |
These
are roughly the steps I followed in setting |
|
|
8949
|
Thu Aug 1 12:12:35 2013 |
gautam | Update | CDS | New model for endtable PZTs | I have
made a new model for the endtable PZT servo,
and have put it in c1iscex. Model name is |
|
|
8948
|
Wed Jul 31 21:12:05 2013 |
manasa | Update | General | Pump down called off | [Koji, Manasa]
We missed to check that we had the green |
|
|
8947
|
Wed Jul 31 17:02:17 2013 |
Alex Cole | Update | Electronics | Preliminary Photodetector Frequency Reponse Measurements | [Eric, Alex]
We used our setup from yesterday
(elog #8940) to measure transimpedance measurements |
|
|
8946
|
Wed Jul 31 10:27:00 2013 |
Steve | Update | VAC | instrument grade air is discontinoued | We have been using Air Liquide Instrument
Grade Air for venting the 40m vacuum envelope.
It is no longer available. |
|
|
8945
|
Wed Jul 31 09:51:43 2013 |
Steve | Update | safety | Sujan receives safety training | Sujan got 40m specific basic safety training
this morning. |
|
|
8944
|
Wed Jul 31 00:59:58 2013 |
manasa | Update | General | ITMX chamber vented/Closing plan | My Plan for closing:
Today: |
|
|
8943
|
Tue Jul 30 19:44:05 2013 |
gautam | Configuration | endtable upgrade | Second mirror glued to PZT and mounted |
I have |
|
|
8942
|
Tue Jul 30 19:40:47 2013 |
gautam | Configuration | endtable upgrade | DAC-PZT Driver Board Output Signal Chain Tested |
[Alex, Gautam]
|
|
|
8941
|
Tue Jul 30 18:56:31 2013 |
manasa | Update | General | ITMX chamber vented/Closing plan | [Koji,Manasa]
We removed the ITMX heavy door to
fix the oplev situation. |
|
|
8940
|
Tue Jul 30 16:21:46 2013 |
Alex Cole | Update | Electronics | Photodetector Input Modulation | [Eric, Alex]
We successfully used our system to
modulate the input to a single photodetector. |
|
|
8939
|
Tue Jul 30 15:38:24 2013 |
manasa | Update | General | ITMX oplev |
|
|
|
8938
|
Tue Jul 30 13:41:35 2013 |
Koji | Update | General | ITMX oplev | I wonder what optics is causing the halo
on the oplev beam.
It this comes from any uncoated lens |
|
|
8937
|
Tue Jul 30 11:30:55 2013 |
manasa | Update | General | ITMX oplev |
|
|
|
8936
|
Tue Jul 30 00:21:15 2013 |
Koji | Update | General | Vent progress | [Koji, Manasa, Sujan]
Tomorrow we'll make final checks |
|
|
8935
|
Mon Jul 29 21:57:45 2013 |
gautam | Configuration | endtable upgrade | Hardware installed at 1X9 | The following hardware |
|
|
8934
|
Mon Jul 29 16:15:13 2013 |
Koji | Update | VAC | AC removed | Prior to the access connector removal,
Manasa and I aligned the IFO mirrors.
The arms were locked and aligned by |
|
|
8933
|
Mon Jul 29 16:04:40 2013 |
Steve | Update | VAC | AC removed | Manasa, Eric, Evan, Koji and Steve,
Access connector removed in order
to complete alignment. Light aluminum with |
|
|
8932
|
Mon Jul 29 13:39:25 2013 |
gautam | Configuration | endtable upgrade | PZT Driver Board-further changes |
I have |
|
|
8931
|
Sun Jul 28 20:13:41 2013 |
Annalisa | Update | Green Locking | Y Phase tracker calibration | I did a calibration measurement for the
Y part of the BeatBox using a Marconi. This
is in order to get a more accurate calibration |
|
|
8930
|
Sun Jul 28 19:39:04 2013 |
Annalisa | Update | endtable upgrade | Picture | Yend table picture updated on the wiki
page |
|
|
8929
|
Fri Jul 26 22:45:14 2013 |
manasa | Update | General | Vent progress | [Koji, Manasa]
The arms were brought back to resonance
after yesterday's vent work.
|
|
|
8928
|
Fri Jul 26 22:19:24 2013 |
Charles | Update | ISS | ISS - Full Schematic - Updated |
|
|
|
8927
|
Fri Jul 26 14:39:08 2013 |
Charles | Update | ISS | Power Regulation for ISS Board | I constructed a regulator board that can
take |
|
|
8926
|
Fri Jul 26 13:39:30 2013 |
Koji | Update | ASC | POP QPD analysis | It was not actually easy to see from the
entry what signal was taken in what condition
but from the shape of the spectra |
|
|
8925
|
Thu Jul 25 14:45:06 2013 |
rana | Update | PEM | Guralp specgram with ligoDV and NDS2 | Once you install a matlab newer than
2012a, you can install ligoDV as a matlab
app and get the NDS2 client software for |
|
|
8924
|
Thu Jul 25 14:02:53 2013 |
Jenne | Update | SUS | SR3, PR3 flipped | Yesterday afternoon, I went back into the
BS chamber, and flipped both PR3 and SR3.
|
|
|
8923
|
Thu Jul 25 13:54:35 2013 |
manasa | Update | General | PR3 clamped and Y arm is back flashing | [Jenne, Annalisa, Manasa]
After yesterday's flipping of PR3,
we lost our input pointing. Koji spent a |
|
|
8922
|
Thu Jul 25 12:53:45 2013 |
Charles | Update | ISS | Comparator + Triggering Prototype | I realized I totally forgot to post
this last week, but I prototyped the comparator
and boost triggering portion of the ISS, |
|
|
8921
|
Thu Jul 25 02:53:00 2013 |
Koji | Update | General | IFO Alignment after TT flipping - no progress | There was no progress tonight after Jenne
left.
I could not find any reasonable fringes |
|
|
8920
|
Wed Jul 24 22:58:03 2013 |
Charles | Update | ISS | ISS - Full Schematic - Updated | I have made significant changes to
the ISS schematic, mostly in the form of
adding necessary subsystems. |
|