| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
1789
|
Sat Jul 25 13:34:58 2009 |
Koji | Update | General | Week 5/6 Update |
|
|
|
1788
|
Fri Jul 24 21:02:46 2009 |
Alberto | Update | PSL | Aligning the beam to the Faraday | This afternoon I kept working on the alignment
of the beam so that it matches at the same
the PSL periscope, the Mode Cleaner and the |
|
|
1787
|
Fri Jul 24 17:47:52 2009 |
Stephanie | Update | General | Multiply Resonant EOM Update | After speaking with Rana and realizing
that it would be better to use smaller inductances
in the flying-component circuit (and after |
|
|
1786
|
Fri Jul 24 17:20:48 2009 |
Jenne | Update | oplevs | ETMY oplev is iffy | ETMY oplev is currently a work in progress.
The HeNe beam is hitting the photodiode,
but the spot size there is pretty much the |
|
|
1785
|
Fri Jul 24 11:04:11 2009 |
Alberto | Configuration | Computers | elog restarted | This morning I found the elog down. I restarted
it using the procedure in the wiki. |
|
|
1784
|
Thu Jul 23 20:30:23 2009 |
Alberto | Update | PSL | Beam aligned to the Farady | After yesterday's changes in the MC cavity
state today it was necessary to optimize
the alignment to the Faraday. |
|
|
1783
|
Thu Jul 23 10:05:38 2009 |
Alberto | Update | PSL | Summary of the latest adventures with the alignment of the mode cleaner |
|
|
|
1782
|
Thu Jul 23 07:34:45 2009 |
Aidan | Update | CDS | Added C2 MEDM screens to 40m SVN. |
See Adhikari eLOG entry: http://nodus.ligo.caltech.edu:8080/AdhikariLab/194 |
|
|
1781
|
Wed Jul 22 20:11:26 2009 |
pete | Update | Computers | RCG front end | I compiled and ran a simple (i.e. empty)
front end controller on scipe12 at wilson
house. I hooked a signal into the ADC |
|
|
1780
|
Wed Jul 22 18:04:14 2009 |
rob | Omnistructure | Computers | weird noise coming from Gigabit switch | in the rack next to the printer.
It sounds like a fan is hitting something. |
|
|
1779
|
Wed Jul 22 16:15:52 2009 |
Chris Zimmerman | Update | General | Week 5/6 Update | The last week I've started setting up the
HeNe laser on the PSL table and doing some
basic measurements (Beam waist, etc) with |
|
|
1778
|
Wed Jul 22 14:44:57 2009 |
Zach | Update | Cameras | GigE Phase Camera | This past week, I have mostly been debugging
my software. I have tried to use the
fluorescent lights to test the camera, but |
|
|
1777
|
Wed Jul 22 11:18:49 2009 |
rob | Configuration | Computers | sticky sliders |
|
|
|
1776
|
Wed Jul 22 11:14:11 2009 |
Alberto | Configuration | Computers | computers are down |
|
|
|
1775
|
Wed Jul 22 11:08:36 2009 |
Stephanie | Update | General | Multiply Resonant EOM Update | I have built a version of the circuit with
flying components; the completed circuit
is shown in the attached picture. I built |
|
|
1774
|
Wed Jul 22 10:49:40 2009 |
Alberto | Update | PSL | MC Alignment Trend | Trying to track the MC positions back for
a few days, it seems that the data hasn't
been recorded properly for a while. Something |
|
|
1773
|
Wed Jul 22 09:04:10 2009 |
Alberto | Configuration | Computers | computers are down |
|
|
|
1772
|
Wed Jul 22 01:57:19 2009 |
Alberto | Configuration | Computers | computers are down |
|
|
|
1771
|
Tue Jul 21 18:46:47 2009 |
steve | Configuration | Computers | computers are down | All suspentions are kicked up. Sus dampings
and oplev servos turned off.
c1iscey and c1lsc are down. c1asc |
|
|
1770
|
Tue Jul 21 17:52:12 2009 |
Jenne | Update | IOO | MC_L flatlined |
|
|
|
1769
|
Tue Jul 21 17:01:18 2009 |
pete | DAQ | DAQ | temp channel PEM-PETER_FE | I added a temporary channel, to input 9
on the PEM ADCU. Beware
the 30, 31, and 32 inputs. I tried |
|
|
1768
|
Tue Jul 21 15:32:47 2009 |
Jenne | Update | IOO | MC_L flatlined | [Clara, Jenne]
While Clara was working on her Wiener
filtering and optimizing the locations of |
|
|
1767
|
Tue Jul 21 13:55:08 2009 |
Clara | Update | PEM | Guralp Box Success! | There managed to be just enough 100 kOhm
resistors to stuff all the "2"
channels (VERT2, N/S2, E/W2) with the fancy |
|
|
1766
|
Tue Jul 21 01:11:30 2009 |
Dmass | AoG | Computers | Alarms going off | I came into the 40m to sign things out
briefly then swiftly return them, and the
alarms were going off on op540m at 1am. |
|
|
1765
|
Mon Jul 20 17:06:29 2009 |
Jenne | Update | PEM | Guralp Box Fail | [quote]That's terrible: R5 & R8 should definitely
be 100 Ohm and not 100kOhm. 100k would make
it a noise disaster. They should also be |
|
|
1764
|
Mon Jul 20 12:35:21 2009 |
rob | Configuration | Locking | alignment biases funny | I found the alignment biases for the PRM
and the SRM in a funny state. It seemed
like they had been "saved" in badly |
|
|
1763
|
Mon Jul 20 10:35:06 2009 |
steve | Update | VAC | UPS batteries replaced | APC Smart-UPS (uninterruptible power
supply) batteries RBC12 replaced at 1Y8 vacuum
rack. |
|
|
1762
|
Sun Jul 19 22:38:24 2009 |
rob | Omnistructure | General | Web screenshots aren't being updated |
|
|
|
1761
|
Sat Jul 18 19:49:48 2009 |
rana | Update | PEM | Guralp Box Fail | That's terrible: R5 & R8 should definitely
be 100 Ohm and not 100kOhm. 100k would make
it a noise disaster. They should also be |
|
|
1760
|
Fri Jul 17 18:04:54 2009 |
Clara | Update | PEM | Guralp Box Fail | I've been trying for most of the week to
get noise measurements on the output of the
Guralp box as well as scross the AD640 chip. |
|
|
1759
|
Thu Jul 16 14:54:05 2009 |
rob | Update | Locking | MC_F channel dead |
|
|
|
1758
|
Thu Jul 16 14:41:38 2009 |
rob | Update | Locking | MC_F channel dead |
|
|
|
1757
|
Thu Jul 16 10:52:58 2009 |
Clara | Update | PEM | Single Channel TRS-RNC Cable | I made and tested a female-to-female TRS(audio)-RNC
cable. It only has a single channel, so it
won't work for stereo speakers or anything, |
|
|
1756
|
Thu Jul 16 09:49:52 2009 |
Alan | Update | Computers | fb40m |
|
|
|
1755
|
Thu Jul 16 01:00:56 2009 |
Alberto | Update | Locking | PD9 aligned |
|
|
|
1754
|
Wed Jul 15 18:35:11 2009 |
Stephanie | Update | General | Multiply Resonant EOM Update | Using FET probes, I was able to measure
a transfer function that looks a little more
like what I expected. There are only two |
|
|
1753
|
Wed Jul 15 18:22:15 2009 |
Koji | Update | Cameras | Re: GigE Phase Camera |
|
|
|
1752
|
Wed Jul 15 17:18:24 2009 |
Jenne | DAQ | Computers | DAQAWG gone, now back | Yet again, the DAQAWG flipped out for an
unknowable reason. In order of restart
activities listed on the Wiki, I keyed the |
|
|
1751
|
Wed Jul 15 14:42:31 2009 |
Zach | Update | Cameras | GigE Phase Camera | Lately, I have been able to externally
trigger the camera using a signal generator
passing through the op-amp circuit that I |
|
|
1750
|
Wed Jul 15 12:44:28 2009 |
Chris Zimmerman | Update | General | Week 4/5 Update | I've spent most of the last week working
on finishing up the UCSD calculations, comparing
it to the EUCLID design, and thinking about |
|
|
1749
|
Wed Jul 15 12:14:08 2009 |
Alberto | Update | Locking | photodiode alignment check |
|
|
|
1748
|
Wed Jul 15 12:11:17 2009 |
Stephanie | Update | General | Multiply Resonant EOM Update | This week I've been working on testing
the first version of the prototype circuit.
Initially, I tested the circuit that I built |
|
|
1747
|
Wed Jul 15 11:38:31 2009 |
rob | Update | Locking | MC_F channel dead | It's railed. This is what halted
locking progess on Monday night, as this
channel is used for the offloadMCF script, |
|
|
1746
|
Wed Jul 15 08:59:30 2009 |
steve | Update | Computers | fb40m | The fb40m just went out of order with status
indicator number 8
It recovered on its own five minutes |
|
|
1745
|
Tue Jul 14 17:48:20 2009 |
Jenne | Omnistructure | Environment | Removal of the cold air deflection device for the MOPA chiller | [quote][quote][quote]Around 2 PM today, I
removed the blue flap which has been deflecting
the cold air from the AC down into the laser |
|
|
1744
|
Tue Jul 14 16:31:46 2009 |
Clara | Update | PEM | Frequency Response of Microphone (Bonnie) | So, I actually took these measurements
last week, but I didn't get around to making
nice plots and things until now. I figured |
|
|
1743
|
Tue Jul 14 14:54:19 2009 |
steve | Configuration | Computers | fb40m2 in 1Y6 | Alex and Steve,
SunFire x4600 ( not MEGATRON
2 , it is fb40m2 ) and JetStor ( 16 x 1 TB |
|
|
1742
|
Tue Jul 14 00:57:11 2009 |
Alberto | Update | Locking | photodiode alignment check | Since lately the alignment of the input
beam to the interferometer has changed, I
went checking the alignment of the beam on |
|
|
1741
|
Tue Jul 14 00:32:46 2009 |
rob, alberto | Omnistructure | Environment | Removal of the cold air deflection device for the MOPA chiller | [quote][quote]Around 2 PM today, I removed
the blue flap which has been deflecting the
cold air from the AC down into the laser |
|
|
1740
|
Mon Jul 13 23:03:14 2009 |
rob, alberto | Omnistructure | Environment | Removal of the cold air deflection device for the MOPA chiller | [quote]Around 2 PM today, I removed the blue
flap which has been deflecting the cold air
from the AC down into the laser chiller.
|
|