| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
4303
|
Tue Feb 15 17:48:22 2011 |
Jenne | Update | IOO | Mode Cleaner resonating again | [Valera, Jenne]
After Steve and Valera switched out
the PMC, the Mode Cleaner resonance needed |
|
|
4302
|
Tue Feb 15 15:06:25 2011 |
josephb | Update | CDS | CDS todo list for tomorrow morning | Currently, there is a test directory called
/opt/rtcds/caltech/c1/new_core where we have
the latest svn checkout. Tomorrow (after |
|
|
4301
|
Tue Feb 15 11:57:06 2011 |
steve, valera | Configuration | PSL | PMC swap | We swapped the PMC s/n 2677 for s/n
lho006.
The table below summarizes the power |
|
|
4300
|
Tue Feb 15 11:56:17 2011 |
josephb | Update | CDS | Updated some DAQ channel names | That is my fault for not running the activateDAQ.py
script after a round of rebuilds. I have
run the script this morning, and confirmed |
|
|
4299
|
Tue Feb 15 11:53:02 2011 |
kiwamu | Summary | General | today's missions | I
think this week is going to be an "alignment
week". |
|
|
4298
|
Tue Feb 15 11:43:53 2011 |
Jenne | Update | Computers | Occasional error with NDS2 | Just in case anyone has encountered this
/ knows how to fix it....
I'm running NDS2 on Rossa, trying |
|
|
4297
|
Tue Feb 15 06:59:57 2011 |
Suresh, Jenne | Omnistructure | General | X end enclosure left open | [Jenne, Suresh]
Jenne found the X-end table
enclosure had been left open. She replaced |
|
|
4296
|
Tue Feb 15 06:15:07 2011 |
Suresh | Update | ASC | no signal from IP_ANG_Seg1 | [Valery, kiwamu, Jenne, Suresh]
I first interchanged
the two QPD's on the Y end table to see if |
|
|
4295
|
Tue Feb 15 03:10:37 2011 |
kiwamu | Update | ASC | IR beam alignment for Xarm : TRX reduction | I tried aligning the IR beam axis for
the X arm to have good beam centering on
ITMX and ETMX. |
|
|
4294
|
Tue Feb 15 02:13:16 2011 |
kiwamu | Summary | ASC | a daytime task : small signals on ETMX OL | Rana
and I found that the QPD for the optical
lever at X end are showing small signals. |
|
|
4293
|
Mon Feb 14 23:29:04 2011 |
rana | Summary | SUS | ETMX Fitlers moved around | All of the SUS used to have only 1 filter
module for SIDE. They now have 3 filter modules
for SIDE just like the other DOFs. |
|
|
4292
|
Mon Feb 14 21:59:35 2011 |
rana | Update | CDS | Updated some DAQ channel names | Although Joe and Kiwamu claim
that they have inserted the correct DAQ names
for the OPLEVs (e.g. PERROR and YERROR) back |
|
|
4291
|
Mon Feb 14 18:27:39 2011 |
josephb | Update | CDS | Began updating to latest CDS svn, reverted to previous state | [Joe, Alex]
This morning I began the process
of bringing our copy of the CDS code up to |
|
|
4290
|
Mon Feb 14 17:16:47 2011 |
steve | Update | General | racks, breakers labeled | The south arm labels were changed from
y to x to reflect reality.
So racks, manual disconnects and |
|
|
4289
|
Mon Feb 14 15:59:49 2011 |
Jenne | Update | IOO | WFS quantum efficiency as a function of angle | [Larisa and Jenne]
A few weeks ago (on the 28th of January)
I had tried to measure the quantum efficiency |
|
|
4287
|
Mon Feb 14 12:37:23 2011 |
kiwamu | Update | ASC | no signal from IP_ANG_Seg1 | It turns out there are no reasonable
signal from the segment 1 on the IP_ANG QPD.
|
|
|
4286
|
Mon Feb 14 11:23:24 2011 |
steve | Update | SAFETY | enclosure door upgrade | The #3 enclosure door was removed for the
carpenter shop this morning. They will make
5 full size doors with window on each. |
|
|
4285
|
Mon Feb 14 07:58:43 2011 |
Suresh | Update | CDS | Today's CDS problems |
I am concentrating on the
RF system just now and will be attending |
|
|
4284
|
Mon Feb 14 07:37:13 2011 |
Suresh | Update | Electronics | RF Generation Box: capacitors across power lines |
There were several parts in this
box which did not have shunting capacitors |
|
|
4283
|
Mon Feb 14 01:40:14 2011 |
Koji | Omnistructure | CDS | Name of the green related channels | I propose to use C1:ALS-xxx_xxx for the
names of the green related channels, instead
of GCV, GCX, GCY, GFD... |
|
|
4282
|
Mon Feb 14 01:19:18 2011 |
rana | Update | CDS | Today's CDS problems | This is just a listing of CDS problems
I still notice today:
MC2-MCL |
|
|
4281
|
Mon Feb 14 00:39:21 2011 |
rana, suresh | Update | Electronics | VCO Frequency Noise Measurement with the MFD | We hooked up the VCO Driver output to the
MFD. We adjusted the levels with attenuators
to match up to the Level 7 mixer that's being |
|
|
4280
|
Sun Feb 13 16:50:17 2011 |
kiwamu | Update | ASC | IP_ANG was at wrong ADC | I found that |
|
|
4279
|
Sun Feb 13 16:20:53 2011 |
Suresh | Update | Electronics | REFL11 Photodiode replaced | It is 0.375 mW as in the calculation.
The total diode output is just 1mW and it
is divided with a 50/50 beam splitter... |
|
|
4278
|
Sun Feb 13 15:02:23 2011 |
kiwamu | Update | Green Locking | X arm beam offcentering has been measured | The amounts
of the X arm's beam off-centering have been |
|
|
4277
|
Sun Feb 13 02:33:37 2011 |
Koji | Update | Electronics | REFL11 Photodiode replaced | Suresh is saying 375mW and 0.375mW. Let's
wait for his update of the actual power.
Also he is not using EPICS, there |
|
|
4276
|
Sat Feb 12 23:22:21 2011 |
rana | Update | Electronics | REFL11 Photodiode replaced | 375 mW is way too much light. We must never
put more than 100 mW on any of these diodes.
We don't want to blow up more diodes like |
|
|
4275
|
Sat Feb 12 08:08:05 2011 |
Suresh | Update | Electronics | REFL11 Photodiode replaced | A new photodiode ( Perkin and Elmer Model
no. C30642GH Sl No.1526) has been installed
in the place of the old photodiode. |
|
|
4274
|
Fri Feb 11 16:43:09 2011 |
steve | Update | VIDEO | MC1 & 3 video monitor | I set up video monitoring of MC1 and MC3 |
|
|
4273
|
Fri Feb 11 09:27:03 2011 |
steve | Configuration | VAC | RGA scan | The RGA scan is normal at day 52 of this
pump down.
Light power BS 1064nm ~25mW, ETMX |
|
|
4272
|
Fri Feb 11 00:20:58 2011 |
Suresh | Update | Electronics | REFL11: Photodiode requires replacement |
This is with reference to Kevin and
Jenne's elogs # 3890, |
|
|
4271
|
Thu Feb 10 14:52:36 2011 |
Aidan | HowTo | Computers | Adding filenames in MATLAB plots | The following code is incredibly useful
when creating MATLAB plots as it adds
the filename of the script to the plot itself. |
|
|
4270
|
Thu Feb 10 14:07:18 2011 |
josephb | Update | CDS | Updating dolphin drivers to eliminate timeouts when one dolphin card is shutdown | [Joe,Alex]
Alex |
|
|
4269
|
Thu Feb 10 11:16:31 2011 |
steve | Update | PEM | south arm AC turned on | The air condition was off for the south
arm. I turned it on. |
|
|
4268
|
Thu Feb 10 05:06:35 2011 |
kiwamu | Update | Green Locking | beat noise : a little bit better, and 1Hz peak from amplitude noise coupling | I
repeated the same measurement as that Koji |
|
|
4267
|
Thu Feb 10 00:23:25 2011 |
Jenne | Update | Green Locking | Green TRX DC PD installed on PSL | Using a stray beam that is generated as
the transmitted green beam from the Xarm
goes through the viewport to the PSL table, |
|
|
4266
|
Wed Feb 9 23:48:12 2011 |
Suresh | Configuration | Cameras | Video Cable work: New Labels | [Larisa, Aidan,Steve,Suresh]
Today was the first
session for implementing the new video cabling |
|
|
4265
|
Wed Feb 9 15:26:22 2011 |
josephb | Update | CDS | Updated c1scx with lockin, c1gcv for green transmission pd | Updated
the c1scx model to have two Lockin demodulators
(C1:SUS-ETMX_LOCKIN1 and C1:SUS-ETMX_LOCKIN2). |
|
|
4264
|
Wed Feb 9 10:25:46 2011 |
steve | Update | SAFETY | AP table | I blocked the AP table's south west
10" ID port since it is obsolete with
the new layout. |
|
|
4263
|
Tue Feb 8 16:44:43 2011 |
Jenne | Update | Computers | LIGO Grid Cluster client upgraded on Rossa | I did a yum-install of the latest ldg-client
(to get onto the LIGO Clusters) on Rossa.
I followed the instructions on the |
|
|
4262
|
Tue Feb 8 16:04:58 2011 |
josephb | Update | CDS | Hard coded decimation filters need to be fixed | [Joe, Rana]
Filter definitions for the decimation
filters to epics readback channels (like |
|
|
4261
|
Tue Feb 8 15:22:13 2011 |
kiwamu | Update | Green Locking | new electronics rack at X end | Yesterday
I moved the whole green electronics stuff,
which had been sitting on the floor at the |
|
|
4260
|
Tue Feb 8 13:26:11 2011 |
Aidan | Summary | Green Locking | Temperature dependence of phase change of green on reflection | I did a quick back of the envelope
calculation of the expected green phase change
on reflection from the aLIGO ITM. |
|
|
4259
|
Tue Feb 8 10:23:02 2011 |
Aidan | Summary | Green Locking | Digital Frequency Discriminator - reference |
Here's the reference for the self-reference
frequency detection idea. See Figure 2. |
|
|
4258
|
Mon Feb 7 21:23:11 2011 |
rana | Configuration | PSL | PSL FSS Temperature Sensor Interface box removed | I noticed that the RMTEMP channel was spiking
myteriously when Kiwamu opened the PSL door.
We found out that the LEMO connectors would |
|
|
4257
|
Mon Feb 7 19:21:32 2011 |
Beard Papa | Metaphysics | Photos | The Adventures of Dr Stochino and Beard Papa | |
|
|
4256
|
Mon Feb 7 10:37:28 2011 |
josephb | Update | Computers | Temporarily removed cronjob for rsync.backup | The backup appears to have finished on
nodus, and I've put the rsync job back in
the crontab. |
|
|
4255
|
Sun Feb 6 02:29:28 2011 |
rana | Update | Electronics | Analog MFD: longer cable | I swapped over to a 3x longer cable (old
65 ft. Pasternak cable from ancient 40m days).
The old one was 6m, the new one is 18.2 m. |
|
|
4254
|
Sat Feb 5 23:03:04 2011 |
rana, koji | Summary | Electronics | Analog Frequency Discriminator: splitter + mixer + long cable | This diagram shows the setup |
|
|
4253
|
Fri Feb 4 23:39:56 2011 |
rana, koji | Update | LSC | mixer based FD set up for noise test | We set up the mixer based FD to check
out its noise performance.
It is being acquired as C1:GCV-XARM_FINE_OUT_DAQ. |
|