| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2079
|
Sun Oct 11 04:12:44 2009 |
rana | Update | PEM | Accelerometers relocated | Some of these channels are not like the
others. |
|
|
2078
|
Fri Oct 9 17:41:04 2009 |
Jenne | Update | PEM | Accelerometers relocated | [Sanjit, Jenne]
The set of 6 accelerometers which
were semi-randomly placed underneath the |
|
|
2077
|
Fri Oct 9 17:37:21 2009 |
Jenne | Update | IOO | MC2 trans beam is dumped | Last night while noise hunting, Rana found
that the MC2 trans beam has been left for
an unknown length of time just hitting the |
|
|
2076
|
Fri Oct 9 16:36:13 2009 |
rob | Update | IOO | frequency noise problem | I used the XARM as a reference to measure
the frequency noise after the MC. It's
huge around 4kHz--hundreds of times larger |
|
|
2075
|
Fri Oct 9 14:23:53 2009 |
Alex Ivanov | Configuration | DAQ | tpchn mystery | "Yes. This master file is used."
|
|
|
2074
|
Fri Oct 9 03:53:56 2009 |
Jenne | Update | Adaptive Filtering | Remaking the ASS | The c1ass computer, which is now used for
the OAF system, has many remnants from the
days when it was actually used as an ASS. |
|
|
2073
|
Fri Oct 9 01:31:56 2009 |
rana | Configuration | DAQ | tpchn mystery | Does anyone know if this master
file is the real thing that's in use now? |
|
|
2072
|
Thu Oct 8 22:17:15 2009 |
rana | Configuration | DMF | input channels changed | I changed the input channels of the DMF
recently so that it now uses 3 Guralp channels
in addition to the 3 ACC and 1 Ranger. |
|
|
2071
|
Thu Oct 8 21:32:59 2009 |
Koji | Summary | General | Recycling cavity loss | I looked at the data of the day before
yesterday (Oct 06) to know how much is the
recycling gain. |
|
|
2070
|
Thu Oct 8 20:18:56 2009 |
Koji | Summary | General | Arm cavity loss | Last night (Oct 07), I ran armLoss script
in order to obtain the latest numbers for
the arm cavity loss. |
|
|
2069
|
Thu Oct 8 14:41:46 2009 |
jenne | Update | Computers | c1susvme1 is back online |
|
|
|
2068
|
Thu Oct 8 11:37:59 2009 |
josephb | Update | Computers | Reboot of dcuepics helped, c1susvme1 having problems | Power cycling c1dcuepics seems to have
fixed the EPICs channel problems, and c1lsc,
c1asc, and c1iovme are talking again. |
|
|
2067
|
Thu Oct 8 11:10:50 2009 |
josephb, jenne | Update | Computers | EPICs Computer troubles | At around 9:45 the RFM/FB network alarm
went off, and I found c1asc, c1lsc, and c1iovme
not responding. |
|
|
2066
|
Wed Oct 7 20:32:21 2009 |
rana | Update | Adaptive Filtering | extra delay and noise in PEM -> ASS/OAF system | [Rana, Jenne]
There is some craziness going on
with the delay in the PEM path for the OAF. |
|
|
2065
|
Wed Oct 7 19:23:49 2009 |
Jenne | Update | Adaptive Filtering | (Final?) PEM cabling changes |
|
|
|
2064
|
Wed Oct 7 11:18:40 2009 |
kiwamu | Summary | Electronics | racks of electronics |
I took the pictures of all racks
of electronics yesterday, and then uploaded |
|
|
2063
|
Wed Oct 7 07:42:55 2009 |
rana | Update | Adaptive Filtering | Attempts to take a TF of the OAF system | I remeasured
the OAF time delay using the OAF-TF template |
|
|
2062
|
Wed Oct 7 06:26:09 2009 |
rana | HowTo | IOO | MC_L calibration + some DTT lore | I drove MC2 in POS and used the
resulting response in MC_F to calibrate the
IOO-MC_L channel. |
|
|
2061
|
Wed Oct 7 03:49:49 2009 |
rana | Update | Adaptive Filtering | Attempts to take a TF of the OAF system | Here's a plot of the spectra of the
seismometers and MCL. The coherence shows
which axes are aligned right now: MC1_X is |
|
|
2060
|
Tue Oct 6 23:39:54 2009 |
Koji | Omnistructure | Environment | RF area is clean! | Awesome.
I propose that anyone who tries to
do this kind of thoroughgoing cleaning should |
|
|
2059
|
Tue Oct 6 20:09:50 2009 |
Jenne | Omnistructure | Environment | RF area is clean! | I spent part of the afternoon cleaning
up the area next to the Mode Cleaner where
we keep all of our RF stuff: Attenuators, |
|
|
2058
|
Tue Oct 6 11:13:53 2009 |
Jenne | Update | Adaptive Filtering | Attempts to take a TF of the OAF system |
|
|
|
2057
|
Tue Oct 6 10:09:55 2009 |
Zach | Update | PSL | More pictures | I'm back to terrorize the PSL table again.
The pictures I took yesterday were rubbish--today
I'm using a clamp that Steve was nice enough |
|
|
2056
|
Tue Oct 6 01:41:20 2009 |
rob | Update | Locking | DC Readout | Lock acquisition working well tonight.
Was able to engage CM boost (not superboost)
with bandwidth of ~10kHz. Also succeeded |
|
|
2055
|
Mon Oct 5 19:39:26 2009 |
Koji | Update | PSL | PSL laser accidentally turned off | I set the FSS slow actuator adj to -5.6
at the lunch time. It gave a little help
at that time. Now max of the MC Trans is |
|
|
2054
|
Mon Oct 5 18:34:26 2009 |
Jenne | Update | Adaptive Filtering | Attempts to take a TF of the OAF system | [Jenne, Sanjit]
As per Matt's instructions in his
OAF document (elog |
|
|
2053
|
Mon Oct 5 14:37:29 2009 |
Alberto | Update | ABSL | Absolute Length Meaasurement NPRO is on | In the revival of the experiement length
measurement for the recycling cavities, I
turned the auxiliary NPRO back on. The shutter |
|
|
2052
|
Mon Oct 5 14:18:41 2009 |
Zach | Update | PSL | PSL table photos |
|
|
|
2051
|
Mon Oct 5 13:43:37 2009 |
Zach | Update | PSL | PSL table photos | I have been commissioned to take pictures
of the PSL table so that it can be diagrammed.
I am starting now (1:42 pm, 10/5/09). |
|
|
2050
|
Mon Oct 5 10:41:31 2009 |
Koji | Update | PSL | PSL laser accidentally turned off | The PSL output looks smaller than the incident.
Try to FSS Slow actuator adj of -5.6 (nominal),
instead of -3.5. |
|
|
2049
|
Mon Oct 5 09:31:05 2009 |
Alberto | Frogs | PSL | PSL laser accidentally turned off | Alberto, Steve,
While I was moving a cart near by
the PSL table I pushed the red emergency |
|
|
2048
|
Mon Oct 5 02:51:08 2009 |
rob | Update | Locking | almost there | Working well tonight: the handoff of CARM
to RF (REFL2I), successful reduction of CARM
offset to zero, and transition control of |
|
|
2047
|
Sat Oct 3 14:53:24 2009 |
rob | Update | Locking | more progress | Late last night after the ETMY settled
down from the quake I made some more progress
in locking, with the handoff to RF CARM succeeding |
|
|
2046
|
Fri Oct 2 18:26:32 2009 |
rob | AoG | Environment | earthquake | quake coming through. I've re-enabled
optic damping (except ETMY), and left off
the oplevs for now. We can do a resonant-f |
|
|
2045
|
Fri Oct 2 18:04:45 2009 |
rob | Update | CDS | DTT no good for OMC channels | I took the output of the OMC DAC and plugged
it directly into an OMC ADC channel to see
if I could isolate the OMC DAC weirdness |
|
|
2044
|
Fri Oct 2 17:00:06 2009 |
Alberto | Update | General | 40m Update - Requirements on the 5x Frequency Multiplier | Here's the gist of the requirements on
the 5x frequency multiplier for the upgrade
(see attachemnt - despite the preview down |
|
|
2043
|
Fri Oct 2 15:24:29 2009 |
sanjit, rana | Summary | IOO | mcwfs centered | we set the offsets for the MCWFS DC and
for the MCWFS demod outputs and then turned
off the lights put the MZ at half fringe |
|
|
2042
|
Fri Oct 2 15:11:44 2009 |
rob | Update | Computers | c1susvme2 timing problems update update | It got worse again, starting with locking
last night, but it has not recovered.
Attached is a 3-day trend of SRM cpu load |
|
|
2041
|
Fri Oct 2 14:52:55 2009 |
rana | Update | Computers | c1susvme2 timing problems update | The attached shows the 200 day '10-minute'
trend of the CPU meters and also the room
temperature. |
|
|
2040
|
Fri Oct 2 02:55:07 2009 |
rob | Update | Locking | more progress | More progress with locking tonight, with
initial acquisition and power ramps working.
The final handoff to RF CARM still needs |
|
|
2039
|
Thu Oct 1 19:18:24 2009 |
Koji | Update | SUS | all suspensions undamped | Ops. I restored the damping of the suspensions
at around 16:30.
|
|
|
2038
|
Thu Oct 1 19:04:05 2009 |
Koji | Update | MZ | MZ work done (Re: MZ Work from 13:00-) | MZ work has been done. I did not change
anything on the circuit.
Recently we observed that the MZ |
|
|
2037
|
Thu Oct 1 15:42:55 2009 |
rob | Update | Locking | c1susvme2 timing problems update |
|
|
|
2036
|
Thu Oct 1 14:22:28 2009 |
rob | Update | SUS | all suspensions undamped |
|
|
|
2035
|
Thu Oct 1 13:12:41 2009 |
Koji | Update | MZ | MZ Work from 13:00- | I will investigate the MZ board. I will
unlock MZ (and MC). |
|
|
2034
|
Thu Oct 1 11:39:47 2009 |
Jenne | Update | SUS | MC2 damping restored again |
|
|
|
2033
|
Thu Oct 1 10:23:00 2009 |
steve | Update | PSL | MC2 damping restored again | The EQ did not change the input beam
pointing. All back to normal, except MC2
wachdogs tripped again. |
|
|
2032
|
Thu Oct 1 09:36:09 2009 |
Koji | Update | MZ | MZ relocked (Re:suspention damping restored and MZ HV stuck) | MZ stayed unlocked. Now It was relocked.
|
|
|
2031
|
Thu Oct 1 08:37:43 2009 |
steve | Update | SUS | suspention damping restored and MZ HV stuck | Earthquake
of magnitude 5.0 shakes ETMY loose.
MC2 lost it's damping later. |
|
|
2030
|
Thu Oct 1 03:12:56 2009 |
rob | Update | Locking | some progress | Good progress in IFO locking tonight, with
the arm powers reaching about half the full
resonant maximum. |
|