| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
3854
|
Wed Nov 3 16:49:31 2010 |
steve | Update | General | storage cabinet is in place | The south end of IFO room 104 was reshuffled.
The flow bench was moved all the way to the
south end to create more room for the crane |
|
|
3853
|
Wed Nov 3 15:13:55 2010 |
josephb | Update | CDS | Temporary RFM slow read work around | Problem:
Each RFM read in the c1mcs model
is adding ~7 microseconds to the cycle time. |
|
|
3852
|
Wed Nov 3 09:32:00 2010 |
rana | Summary | CDS | Eurocard board swapping | When swapping Eurocard boards, it
is safest to first turn down the power supplies
and then do the swapping. |
|
|
3851
|
Wed Nov 3 03:00:47 2010 |
Koji | Summary | Green Locking | coarse locked green beat frequency | Wow! Great guys!! |
|
|
3850
|
Wed Nov 3 02:37:39 2010 |
yuta | Summary | Green Locking | coarse locked green beat frequency | (Kiwamu, Yuta)
|
|
|
3849
|
Wed Nov 3 02:23:11 2010 |
yuta | Summary | CDS | checking whitening filter board | Summary:
Last night, I found that some
of the input channels have wrong hardware |
|
|
3848
|
Tue Nov 2 16:49:02 2010 |
Jenne | Configuration | Cameras | Cabling on the PSL table | Dear whomever setup the camera on the SW
corner of the PSL table,
It would be handy if, even for temporary |
|
|
3847
|
Tue Nov 2 16:24:07 2010 |
Koji | Update | Auxiliary locking | Alignment for the green in the X trans table | [Kiwamu Koji]
Today we found the green beam
from the end was totally missing at the vertex. |
|
|
3846
|
Tue Nov 2 15:24:18 2010 |
josephb | Update | CDS | c1ioo and c1mcs only sending MC_L, MC1_PIT, MC1_YAW | In order to have the c1mcs model run, we're
running with only 3 RFM channels between
c1ioo and c1mcs at the moment. This |
|
|
3845
|
Tue Nov 2 13:51:40 2010 |
josephb, yuta | Update | CDS | RFM slowdown problem | Problem:
Each RFM memory location which needs
to be read by a front end model slows the |
|
|
3844
|
Tue Nov 2 11:34:53 2010 |
josephb, alex | Update | CDS | diagconfd running, excitations back in dtt | Problem:
Diagnostic test tools was starting
with errors. |
|
|
3843
|
Tue Nov 2 00:17:01 2010 |
Suresh | Configuration | Locking | Temporary changes to the Video Mux | Fiber
coupling 1064 nm light at the end of X arm
This |
|
|
3842
|
Mon Nov 1 23:31:05 2010 |
yuta | Update | CDS | checked input hardware filter in single frequency | Background:
For input filter, we have analog
whitening filter and also digital whitening |
|
|
3841
|
Mon Nov 1 19:32:08 2010 |
yuta | Summary | CDS | fb crashed? during c1ioo and c1mcs connection at ASC | Frame builder
died again!! |
|
|
3840
|
Mon Nov 1 17:27:47 2010 |
Jenne | Update | SUS | PRM ready for installation into chamber | [Jenne, Suresh]
Over the weekend, Bob and Daphen
gave the PRM a 48hr. vacuum bake. This |
|
|
3839
|
Mon Nov 1 16:43:24 2010 |
Koji | Summary | CDS | CDS time delay measurement | Um, Beautiful. |
|
|
3838
|
Mon Nov 1 15:47:15 2010 |
yuta | Summary | CDS | CDS time delay measurement | Background:
I measured CDS time delay last
week, but because of my lack of understanding |
|
|
3837
|
Mon Nov 1 15:35:41 2010 |
josephb | Update | CDS | Front end USR and CPU times now recorded by DAQ | Problem:
We have no record of how long the
CPUs are taking to perform a cycle's worth |
|
|
3836
|
Mon Nov 1 14:53:30 2010 |
josephb, alex, rolf | Update | CDS | Alex updated FB and mx_streams code | Problem:
The framebuilder was being flaky.
MX_streams would go down, prevent testpoints |
|
|
3835
|
Mon Nov 1 12:38:56 2010 |
Leo Singer | Configuration | Computers | python-sqlite installed on Allegra | I installed the Python bindings for sqlite
on Allegra using
$ sudo yum install python-sqlite |
|
|
3834
|
Mon Nov 1 11:34:08 2010 |
josephb | Update | CDS | CA.Client.Exception spam fixed | Problem:
CA.Client.Exception............................................... |
|
|
3833
|
Mon Nov 1 10:28:41 2010 |
steve | Bureaucracy | SAFETY | Suresh received 40m safety training | Our new postdoc Suresh Doravari received
40m specific safety training last week. |
|
|
3832
|
Mon Nov 1 10:17:55 2010 |
steve | Update | General | breakers relabelled | Pedro of the electrical shop helped to
retrace wires from the racks to the breakers.
Many wrong labels were replaced. These labels |
|
|
3831
|
Sun Oct 31 00:19:35 2010 |
rana | Summary | Computer Scripts / Programs | HP3563A netGPIB function | I've wheeled the old HP audio frequency
signal analyzer into the control room to
debug the GPIB/python interface. The wireless |
|
|
3830
|
Sat Oct 30 14:35:43 2010 |
Koji | Summary | CDS | CDS time delay measurement | Unsatisfactory.
Neglecting the digital anti-imaging |
|
|
3829
|
Sat Oct 30 05:27:53 2010 |
yuta | Summary | CDS | CDS time delay measurement | Motivation:
We want to know the time delay
of CDS in the IOP scheme. |
|
|
3828
|
Fri Oct 29 18:37:33 2010 |
yuta | Summary | CDS | daqd and current CDS status | Background:
Before Joe left(~ 1 hour ago),
fb was working for a while. But after he |
|
|
3827
|
Fri Oct 29 16:43:25 2010 |
josephb | Update | CDS | c1ioo now talking to c1sus | Problem:
c1ioo was not able to talk to c1sus
because of timing issues. This prevented |
|
|
3826
|
Fri Oct 29 16:39:01 2010 |
Jenne | Update | Treasure | Old Green suspension towers disassembled | [Jenne, Joonho]
At Koji's request, we disassembled
2 of the old Green suspension towers that |
|
|
3825
|
Fri Oct 29 16:03:35 2010 |
kiwamu | Update | PSL | wideband EOM : installed the triple resonant box |
|
|
|
3824
|
Fri Oct 29 14:16:26 2010 |
Jenne | Update | SUS | PRM baking | [Suresh, Jenne]
We took a look-see at the PRM after
the gluing from last night. The balance |
|
|
3823
|
Fri Oct 29 14:06:12 2010 |
kiwamu | Update | Green Locking | Re: 80MHz VCO for green PLL : VCO calibration | P.S. There is a document about the 80MHz
VCO box. This may be helpful.
|
|
|
3822
|
Fri Oct 29 11:29:29 2010 |
josephb | Update | CDS | How I broke the frame builder yesterday | Problem:
Long before Yuta came along and deleted
daqd, I had done something to prevent the |
|
|
3821
|
Fri Oct 29 11:25:15 2010 |
josephb, yuta | Summary | CDS | [EMERGENCY] accidentally deleted daqd | Problem:
Missing daqd file, i.e. the framebuilder
executable. |
|
|
3820
|
Fri Oct 29 06:20:20 2010 |
kiwamu | Update | Green Locking | 80MHz VCO for green PLL : VCO calibration | I calibrated the VCO frequency
as a function of the applied input voltage.
|
|
|
3819
|
Fri Oct 29 05:40:51 2010 |
kiwamu | Update | PSL | wideband EOM aligned : AM decreased by 24dB | At the
PSL table I aligned the wideband EOM more |
|
|
3818
|
Fri Oct 29 04:58:04 2010 |
Kevin | Update | PSL | PBS Optimization | [Koji and Kevin]
Since there was still a lot of power
being reflected from the PBS before the Faraday |
|
|
3817
|
Fri Oct 29 04:24:34 2010 |
Koji | Update | IOO | PMC output increased: need attention | [Kevin Koji]
- The PBS alignment increased
the transmitted power |
|
|
3816
|
Fri Oct 29 01:18:03 2010 |
Koji | Summary | SUS | PRM standoff glued | [Suresh Koji]
The standoff glued. The incandescent
lamp set for curing the epoxy. |
|
|
3815
|
Thu Oct 28 23:17:15 2010 |
yuta | Summary | CDS | [EMERGENCY] accidentally deleted daqd | Rana showed me that if c1sus machine runs
c1mcs stuff(and c1x02 stuff) only, we can
use dataviewer without crashing fb. |
|
|
3814
|
Thu Oct 28 21:20:11 2010 |
yuta | Update | CDS | Flaky fb, tried DAQ re-install, but no help | Summary:
Unfortunately, fb is flakier
than normal. |
|
|
3813
|
Thu Oct 28 20:08:26 2010 |
yuta | Update | Green Locking | revised RF amp cascading | Background:
Yesterday, I said I will use
ZHL-32A for amplifying beat note signal, |
|
|
3812
|
Thu Oct 28 19:10:26 2010 |
tara | Update | Electronics | TTFSS for 40m | I keep a set of new TTFSS for 40m in electronic
cabinet along the North arm.
The set number is #6. It is working |
|
|
3811
|
Thu Oct 28 16:38:54 2010 |
josephb | Update | CDS | Flaky fb, reverted inittab changes on fb | Problem:
Yuta reported many of the signals
being displayed by dataviewer "fuzzier" |
|
|
3810
|
Thu Oct 28 13:01:34 2010 |
steve | Update | PEM | crane repair guys left for the day |
|
|
|
3809
|
Thu Oct 28 11:54:31 2010 |
Koji | Update | Green Locking | checked frequency counter SR620 | ZHL-32A is a high power (well..., actually
middle power) amplifier with the max output
power of +29dBm (~1W!). |
|
|
3808
|
Thu Oct 28 09:16:17 2010 |
steve | Update | PEM | welding in the vertex area | Fire-smoke sensors in the vertex area #2-31,
2-30 east, 2-32 south/MC2 and 2-37 old control
room area are turned off to accommodate the |
|
|
3807
|
Thu Oct 28 04:28:50 2010 |
yuta | Update | Green Locking | checked frequency counter SR620 | (Kiwamu, Yuta)
Background: |
|
|
3806
|
Thu Oct 28 04:23:38 2010 |
rana | Update | IOO | A2L prep | To get the angle to length signal before
the c1ioo processor gets going, we need a
length signal. We can use either the error |
|
|
3805
|
Thu Oct 28 03:39:58 2010 |
yuta | Update | IOO | got very stable MC locking | (Rana, Suresh, Jenne, Kiwamu, Kevin,
Yuta)
|
|