| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
1715
|
Thu Jul 2 16:45:06 2009 |
Clara | Update | PEM | Bonnie and Clyde are officially in operation! (Butch Cassidy and the Sundance Kid are in temp position) | I hooked up Bonnie and Clyde last night
and tested it today. First I tried some loud
noises to make sure I could identify them |
|
|
1716
|
Thu Jul 2 17:37:36 2009 |
steve | Update | VAC | V1 interlock test | Joe, Alberto and Steve
We tested gate valve V1 interlock
by : |
|
|
1717
|
Tue Jul 7 15:08:49 2009 |
Koji | Summary | Photos | 40 high school students visited 40M | Alan and Alberto conducted a tour of 40
high-school students.
It may be the same tour that Rana |
|
|
1718
|
Tue Jul 7 16:06:59 2009 |
Clara | Update | Computer Scripts / Programs | DTT synchronization errors, help would be appreciated | I am attempting to use the DTT program
to look at the coherence of the individual
accelerometer signals with the MC_L signal. |
|
|
1719
|
Wed Jul 8 10:56:04 2009 |
Stephanie | Update | General | Multiply Resonant EOM Update | This week, I've been working on adapting
the last week's circuit to make it buildable.
Mostly this has involved picking components |
|
|
1720
|
Wed Jul 8 11:05:40 2009 |
Chris Zimmerman | Update | General | Week 3/4 Update | The last week I've spent mostly working
on calculating shot noise and other sensitivities
in three michelson sensor setups, the standard |
|
|
1721
|
Wed Jul 8 11:08:43 2009 |
Zach | Update | Cameras | GigE Phase Camera | The plan for the optical setup has been
corrected after it was realized that it would
be impossible to isolate a 29.501 MHz frequency |
|
|
1722
|
Wed Jul 8 11:13:36 2009 |
Alberto | Omnistructure | Computers | wireless router disconnected | Once again, this morning I found the wireless
router disconnected from the LAN cable. No
martian WiFi was available. |
|
|
1723
|
Wed Jul 8 12:36:15 2009 |
Clara | Update | PEM | Coherences and things | After setting up the microphones last week,
I modified the Wiener filtering programs
so as to include the microphone signals. |
7x |
|
1724
|
Wed Jul 8 18:46:56 2009 |
Dmass | AoG | Electronics | Beam Scan Funky | The beam scan (which has been living in
the bridge subbasement for a bit now) is
in a state of imperfection. |
|
|
1725
|
Wed Jul 8 19:13:19 2009 |
Alberto | Update | PSL | PSL beam aligned to the Mode Cleaner | Today I tuned the periscope on the PSL
table to align the beam to the Mode Cleaner.
With the Wave Front Sensor control off, I |
|
|
1726
|
Wed Jul 8 19:42:37 2009 |
Clara | Update | PEM | Bonnie moved to PSL, getting some coherence with the PMC_ERR channel | In her position overlooking whichever table
it is that is next to the PSL, Bonnie drummed
up some decent coherence with the PSL-PMC_ERR |
|
|
1727
|
Thu Jul 9 02:18:09 2009 |
rana | Update | PEM | Bonnie moved to PSL, getting some coherence with the PMC_ERR channel | My guess is that we need a different acoustic
strategy. The microphones are mainly for
high frequencies,
|
|
|
1728
|
Thu Jul 9 19:05:32 2009 |
Clara | Update | PEM | more mic position changes; mics not picking up high frequencies | Bonnie has been strung up on bungees in
the PSL so that her position/orientation
can be adjusted however we like. She is now |
6x |
|
1729
|
Thu Jul 9 19:24:50 2009 |
rana | Update | PEM | more mic position changes; mics not picking up high frequencies | Might be the insidious 850 Hz AA filters in
the black AA box which precedes the ADC.
|
|
|
1730
|
Fri Jul 10 17:32:08 2009 |
rana | Update | Environment | seisBLRMS & mafalda restarted | Rana, Alberto
Mafalda's ethernet cable had fallen out of |
|
|
1731
|
Fri Jul 10 19:56:23 2009 |
rana, koji | Omnistructure | Environment | Changed office temp | I have increased the temperature setpoint
in the office area by ~0.75 deg F. Figure
attached. Also a few days ago I increased |
|
|
1732
|
Sun Jul 12 20:05:06 2009 |
rana | Omnistructure | Environment | Changed office temp | This is a 7-day minute trend. There's [B]no
obvious effect[/B] in any of the channels
looking back 2 days.
|
|
|
1733
|
Sun Jul 12 20:06:44 2009 |
Jenne | DAQ | Computers | All computers down | I popped by the 40m, and was dismayed to
find that all of the front end computers are |
|
|
1734
|
Sun Jul 12 23:14:56 2009 |
Jenne | Omnistructure | General | Web screenshots aren't being updated | Before heading back to the 40m to check
on the computer situation, I thought I'd
check the web screenshots page that Kakeru |
|
|
1735
|
Mon Jul 13 00:34:37 2009 |
Alberto | DAQ | Computers | All computers down |
|
|
|
1736
|
Mon Jul 13 00:53:50 2009 |
Alberto | DAQ | Computers | All computers down |
|
|
|
1737
|
Mon Jul 13 15:14:57 2009 |
Alberto | Update | Computers | DAQAWG | Today Alex came over, performed his magic
rituals on the DAQAWG computer and fixed
it. Now it's up and running again. |
|
|
1738
|
Mon Jul 13 15:48:05 2009 |
rana | Omnistructure | Environment | Removal of the cold air deflection device for the MOPA chiller | Around 2 PM today, I removed the blue flap
which has been deflecting the cold air from
the AC down into the laser chiller.
|
|
|
1739
|
Mon Jul 13 16:59:10 2009 |
Zach | Update | | GigE Phase Camera | Today, I moved the router from on top of
the PSL into the control room in order to
perform dark field tests on the GC650 (which |
|
|
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.
|
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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, |
|
|
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 |
|
|
1749
|
Wed Jul 15 12:14:08 2009 |
Alberto | Update | Locking | photodiode alignment check |
|
|
|
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 |
|
|
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 |
|
|
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 |
|
|
1753
|
Wed Jul 15 18:22:15 2009 |
Koji | Update | Cameras | Re: GigE Phase Camera |
|
|
|
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 |
|
|
1755
|
Thu Jul 16 01:00:56 2009 |
Alberto | Update | Locking | PD9 aligned |
|
|
|
1756
|
Thu Jul 16 09:49:52 2009 |
Alan | Update | Computers | fb40m |
|
|
|
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, |
|
|
1758
|
Thu Jul 16 14:41:38 2009 |
rob | Update | Locking | MC_F channel dead |
|
|
|
1759
|
Thu Jul 16 14:54:05 2009 |
rob | Update | Locking | MC_F channel dead |
|
|
|
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. |
|
|
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 |
|
|
1762
|
Sun Jul 19 22:38:24 2009 |
rob | Omnistructure | General | Web screenshots aren't being updated |
|
|
|
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. |
|
|
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 |
|