| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
95
|
Mon Nov 12 15:05:49 2007 |
rob | Configuration | PSL | FSS |
Spent a bit of time fiddling with the FSS
again today. In a not-particularly-systematic |
|
|
94
|
Mon Nov 12 14:09:19 2007 |
rob | DAQ | General | tpman dead on fb40m | The testpoint manager was dead on fb40m.
I know I re-started it sometime after the
power outage, so something must have killed |
|
|
93
|
Mon Nov 12 10:53:58 2007 |
pkp | Update | OMC | Vertical Transfer functions | [Norna Sam Pinkesh]
These plots were created by injected white |
|
|
92
|
Sun Nov 11 21:21:04 2007 |
rana | HowTo | Computers | New DV | To use the new ligoDV (previously GEO DV)
to look at 40m data, open up a matlab, set
up for mDV as usual,
|
|
|
91
|
Sun Nov 11 21:05:55 2007 |
rana | HowTo | SUS | MC Touching or not | I wrote a script: [I]SUS/freeswing-mc.csh[/I],
which gives the MC mirrors the appropriate
kicks
|
|
|
90
|
Fri Nov 9 21:36:14 2007 |
rob | Configuration | PSL | FSS | rob, rana
We looked at the FSS a bit today. The most |
|
|
89
|
Fri Nov 9 17:33:33 2007 |
rob | Configuration | PSL | ISS |
The 3.7 MHz is actually on the light. It's
the beat between the 29.5 MHz sidebands and |
|
|
88
|
Fri Nov 9 09:37:55 2007 |
steve | Update | PSL | head temp hiccup | Just an other PSL-126MOPA_HTEMP hiccup.
The water chiller is at 20.00C |
|
|
87
|
Fri Nov 9 00:23:12 2007 |
pkp | Update | OMC | X and Z resonances | I got a couple of resonance plots going for
now. I am still having trouble getting the
Y measurement going for some reason. I will |
|
|
86
|
Fri Nov 9 00:01:24 2007 |
waldman | Omnistructure | OMC | OMC mechanical resonances (Tap tap tappy tap) | [Pinkesh, Aidan, Sam]
We did a tap-tap-tappy-tap test of the OMC |
7x |
|
85
|
Thu Nov 8 18:44:01 2007 |
tobin | Configuration | PSL | ISS | Tobin, Rob
With the Sense PD blocked, I adjusted the |
|
|
84
|
Thu Nov 8 15:57:53 2007 |
tobin | Configuration | PSL | shelf removed | I removed the sheet metal shelf from the PSL
enclosure, for easier access to the ISS.
|
|
|
83
|
Thu Nov 8 11:40:21 2007 |
steve | Update | PEM | particle counts are up | I turned up the psl HEPA filter to 100%
This 4 days plot shows why |
|
|
82
|
Thu Nov 8 00:55:44 2007 |
pkp | Update | OMC | Suspension tests | [Sam , Pinkesh]
We tried to measure the transfer functions |
9x |
|
81
|
Wed Nov 7 16:07:03 2007 |
steve | Update | PSL | PSL & IOO trend | 1.5 days of happy psl-ioo with litle bumps
in C1:PSL-126MOPA_HTEMP |
|
|
80
|
Wed Nov 7 14:05:59 2007 |
tobin | Configuration | IOO | MC ringdown | Modeling the mode cleaner as a simple cavity
with all losses lumped together, we expect
the cavity power to be
|
|
|
79
|
Wed Nov 7 14:01:31 2007 |
waldman | Omnistructure | OMC | Frequency and Intensity noise | One of the biggest problems I had using the
PZT to lock was excessive noise. I did a
little noise hunting and found that the problem |
|
|
78
|
Wed Nov 7 13:54:44 2007 |
rob | Configuration | IOO | Mode Cleaner transfer function | I performed the same procedure described [url=http://dziban.ligo.caltech.edu:40/40m/40]
here[/url], and re-measured the transfer
function of the mode cleaner to see the effect |
|
|
77
|
Wed Nov 7 10:55:21 2007 |
ajw | Configuration | Computers | backup script restarted | Following the reboot of computers on 10/31/07,
the backup script required restart (which
unfortunately "can't" be automated because |
|
|
76
|
Wed Nov 7 09:38:01 2007 |
steve | Update | VAC | rga scan | pd65-m-d2 at cc1 6e-6 torr |
|
|
75
|
Wed Nov 7 02:14:08 2007 |
Andrey | Bureaucracy | IOO | More information about MC2 ringdown | As Tobin wrote two hours ago, we (Andrey,
Tobin, Robert) made a series of ringdown
measurements for MC2
|
9x |
|
74
|
Wed Nov 7 00:51:33 2007 |
andrey, rob, tobin | Configuration | IOO | MC ringdowns | We completed several ringdown measurements
this afternoon; Andrey is currently processing
the data. |
|
|
73
|
Tue Nov 6 23:45:38 2007 |
tobin | Configuration | Computers | tektronix scripts! | I cooked up a little script to fetch the data
from the networked Tektronix scope. Example
usage:
|
|
|
72
|
Tue Nov 6 18:18:15 2007 |
tobin | Configuration | Computers | I broke (and fixed) conlogger | It turns out that not only restart_conlogger,
but also conlogger itself checks to see that
it is running on the right machine. I had |
|
|
71
|
Tue Nov 6 16:48:54 2007 |
tobin | Configuration | Computers | scopes on the net | I configured our two 100 MHz Tektronix 3014B
scopes with IP addresses: 131.215.113.24
([url=http://scope0/]scope0[/url]) and 113.215.113.25 |
|
|
70
|
Tue Nov 6 15:37:34 2007 |
rob | Configuration | SUS | rampdown script | /cvs/cds/caltech/scripts/SUS/rampdown.pl is
now in the crontab for op340m, running every
half-hour at 15&45. It checks the suspension |
|
|
69
|
Tue Nov 6 15:36:03 2007 |
rob | Update | LSC | XARM locked | Easily, after resetting the PSL Uniblitz shutters.
There's no entry from David or Andrey about
the recovery from last week's power outage, |
|
|
68
|
Tue Nov 6 14:51:03 2007 |
tobin, rob | Update | IOO | Mode cleaner length | Using the Ward-Fricke variant* of the [url=http://ilog.ligo-wa.caltech.edu/ilog/pub/ilog.cgi?group=detector&date_to_view=02/14/2004&anchor_to_scroll_to=2004:02:15:00:06:50-daniel]Sigg-Frolov
method[/url], we found the length of the
mode cleaner to be [b]27.0934020183 meters[/b], |
|
|
67
|
Tue Nov 6 10:42:01 2007 |
rob | Configuration | IOO | mode cleaner locked | Increased the power exiting the PSL by turning
the half-wave plate after the MOPA, opened
the PSL shutter, and aligned the mode cleaner |
|
|
66
|
Tue Nov 6 09:45:22 2007 |
steve | Summary | SUS | vent sus trend | The mc optics dragwippings were done by locking
optics by eq stops and rotating-moving
cages so access were good. This technic worked |
|
|
65
|
Tue Nov 6 09:14:37 2007 |
steve | Summary | VAC | pump down 65 | 8 hr plot,
precondition: 5 days at atm,
vent objective: drag wiping mc1, mc2 & mc3 |
|
|
64
|
Mon Nov 5 22:24:38 2007 |
Andrey, Steve | Omnistructure | VAC | Pumping down goes smoothly |
We (Steve and Andrey) started pumping down
at 3.25PM today. At 9 PM we turned off the |
|
|
63
|
Mon Nov 5 14:44:39 2007 |
waldman | Update | OMC | PZT response functions and De-whitening | The PZT has two control paths: a DC coupled
path with gain of 20, range of 0 to 300
V, and a pair of 1:10 whitening filters, |
|
|
62
|
Mon Nov 5 07:29:35 2007 |
rana | Update | IOO | Friday's In-Vac work | Liyuan recently did some of his pencil beam
scatterometer measurements measuring not
the
|
|
|
61
|
Sun Nov 4 23:55:24 2007 |
rana | Update | IOO | Friday's In-Vac work | On Friday morning when closing up we noticed
that we could not get the MC to flash any
modes.
|
|
|
60
|
Sun Nov 4 23:22:50 2007 |
waldman | Update | OMC | OMC PZT and driver response functions | I wrote a big long elog and then my browser
hung up, so you get a less detailed entry.
I used Pinkesh's calibration of the PZT |
7x |
|
59
|
Sat Nov 3 16:20:43 2007 |
waldman | Summary | OMC | A good day's work |
I followed up yesterday's test of the PZT
with a whole mess of characterizations of |
6x |
|
58
|
Fri Nov 2 12:18:47 2007 |
waldman | Summary | OMC | Locked OMC with DCPD | [Rich, Sam]
We locked the OMC and look at the signal |
|
|
57
|
Fri Nov 2 08:59:30 2007 |
steve | Bureaucracy | SAFETY | the laser is ON | The psl laser is back on ! |
|
|
56
|
Thu Nov 1 20:03:00 2007 |
Andrey Rodionov | Summary | Photos | Procedure "Drop and Drag" in pictures | |
|
|
55
|
Thu Nov 1 19:58:07 2007 |
Andrey Rodionov | Bureaucracy | Photos | Steve and Tobin's picture | |
|
|
54
|
Thu Nov 1 19:55:59 2007 |
Andrey Rodionov | Bureaucracy | Photos | Andrey, Tobin, Robert - photo | |
|
|
53
|
Thu Nov 1 19:55:03 2007 |
Andrey Rodionov | Bureaucracy | Photos | Andrey's photo | |
|
|
52
|
Thu Nov 1 19:54:22 2007 |
Andrey Rodionov | Bureaucracy | Photos | Rana's photo | |
|
|
51
|
Thu Nov 1 19:53:34 2007 |
Andrey Rodionov | Bureaucracy | Photos | Robert's photo | |
|
|
50
|
Thu Nov 1 19:53:02 2007 |
Andrey Rodionov | Bureaucracy | Photos | Tobin's picture | |
|
|
48
|
Thu Nov 1 16:51:33 2007 |
d40 | AoG | General | D40 | [SIZE=3][FONT=Comic Sans MS]If you vant see
D40 againn, you leave one plate goulash by
N2 tank in morning.
|
|
|
47
|
Thu Nov 1 16:42:48 2007 |
Andrey Rodionov | Summary | Environment | End of Daylight Saving Time this weekend | Useful information for everyone, as a friendly
reminder:
|
|
|
46
|
Thu Nov 1 16:34:47 2007 |
Andrey Rodionov | Summary | Computers | Limitation on attachment size of E-LOG |
I discovered yesterday when I was attaching
photos that it is NOT possible to attach |
|
|
45
|
Thu Nov 1 11:45:30 2007 |
tobin | Configuration | IOO | Mode cleaner drag-wiping | Andrey, Bob, David, John Miller, Rana, Rob,
Steve, Tobin
|
|