| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
1534
|
Thu Apr 30 05:49:06 2009 |
Yoichi | Update | Locking | 166MHz LO phase changed | In order to optimize the REFL_2I demod phase,
I changed the delay line setting for the
166MHz LO.
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|
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1533
|
Wed Apr 29 15:56:43 2009 |
rob | Update | Locking | effect of SRCL detune on ARM powers in a CARM sweep | With no DARM offset, sweeping CARM shows
an asymmetry between the state where we lock
to a DARM spring and the state with a DARM |
|
|
1532
|
Wed Apr 29 10:20:14 2009 |
steve | HowTo | VAC | cryo pump interlock rule is waved |
|
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1531
|
Wed Apr 29 04:03:51 2009 |
Yoichi | Update | Locking | CARM RF changed to REFL_2I | Yoichi, Peter
As Rob suggested, the optimal demodulation |
|
|
1530
|
Tue Apr 28 17:51:13 2009 |
rob | HowTo | Locking | setting the RF CARM demod phase |
|
|
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1529
|
Tue Apr 28 16:36:24 2009 |
rob | HowTo | Locking | setting the RF CARM demod phase | To set the demod phase for RF CARM, sensed
at REFL2 (REFL 166I), it suffices to set
the demod phase for REFL2 to be the optimal |
|
|
1528
|
Tue Apr 28 12:55:57 2009 |
Caryn | DAQ | PEM | Unplugged Guralp channels | For the purpose of testing out the temperature
sensors, I stole the PEM-SEIS_MC1X,Y,Z channels.
I unplugged Guralp NS1b, Guralp Vert1b, |
|
|
1527
|
Tue Apr 28 09:27:32 2009 |
steve | Configuration | VAC | cryopump deserves some credit | Congratulation Yoichi and Peter for full
rf locking at night. Let's remember that
the cryopump was shaking the hole vac envelope |
|
|
1526
|
Tue Apr 28 04:30:16 2009 |
Yoichi | Update | Locking | RF full lock | Yoichi, Peter
I believe we have succeeded in the full lock |
|
|
1525
|
Tue Apr 28 01:48:45 2009 |
pete | Configuration | VAC | VC1 open | At about 1am or so Yoichi and I opened
VC1. CC1 had fallen to about 5e-5 torr. |
|
|
1524
|
Mon Apr 27 18:31:44 2009 |
steve | Configuration | VAC | VC1 closed | CC1 5e-7 Torr, VC1 closed at 18:25,
IFO is not pumped, RGA is in bg-mode
|
|
|
1523
|
Sun Apr 26 02:13:18 2009 |
Yoichi | Update | Locking | Two more successes of RF CARM handoff | Tonight, the RF CARM hand off (mostly) succeeded
twice.
But still, the IFO lost lock when I reduced |
|
|
1522
|
Sat Apr 25 03:27:34 2009 |
Yoichi | Update | Locking | Locking status | Yoichi, Peter,
We are working on the final step of the lock |
|
|
1521
|
Sat Apr 25 02:54:25 2009 |
Yoichi | Configuration | VAC | Reflector for the cryopump temperature monitor changed | [quote]The temperature of the cryopump head
is monitored by a photo switch looking at
an aluminum foil reflector attached to the |
|
|
1520
|
Sat Apr 25 00:45:31 2009 |
Yoichi | Configuration | VAC | Reflector for the cryopump temperature monitor changed | The temperature of the cryopump head is monitored
by a photo switch looking at an aluminum
foil reflector attached to the needle of |
|
|
1519
|
Fri Apr 24 17:26:57 2009 |
Yoichi | Update | Locking | DARM demod phase | [quote]
There's actually code in place in the LSC
to dynamically adjust the demod phase for |
|
|
1518
|
Fri Apr 24 16:24:25 2009 |
rob | Omnistructure | VAC | Paschen | In response to Steve's elog entry, and
for 40m posterity, I provide the Paschen
Curve. |
|
|
1517
|
Fri Apr 24 16:02:31 2009 |
steve | HowTo | VAC | cryo pump interlock rule | I tested the cryopump interlock today.
It is touchy. I do not have full confidence
in it. |
|
|
1516
|
Fri Apr 24 11:34:32 2009 |
rob | Update | Locking | DARM demod phase | [quote][quote]Tonight, I was able to go up
to arm power = 40 by tweaking the DARM demodulation
phase.
|
|
|
1515
|
Fri Apr 24 04:38:49 2009 |
Yoichi | Update | Locking | DARM demod phase | [quote]Tonight, I was able to go up to arm
power = 40 by tweaking the DARM demodulation
phase.
|
|
|
1514
|
Fri Apr 24 03:57:30 2009 |
Yoichi | Update | Locking | DARM demod phase | Tonight, I was able to go up to arm power
= 40 by tweaking the DARM demodulation phase.
I think the DARM loop became unstable because |
|
|
1513
|
Thu Apr 23 21:13:37 2009 |
Yoichi | Summary | Environment | Mag. 4 earthquake in LA tripped the watchdogs of the most optics | So far, no damage is noticeable.
restoreWatchdog script was useful :-)
|
|
|
1512
|
Thu Apr 23 18:09:11 2009 |
Yoichi | Update | Environment | Effect of cryopump | The attached is the trend plot of the MC1
accelerometer for 3 days.
It is evident that the seismic level increased |
|
|
1511
|
Thu Apr 23 16:38:33 2009 |
steve | Update | VAC | vac valve relay box is shorting | Ben and I found this vacuum valve relay
box intermittently shorthing yesterday.
It effects V4, V5, VA6 and VM1........ |
|
|
1510
|
Thu Apr 23 16:35:23 2009 |
Yoichi | Summary | Computer Scripts / Programs | restoreWatchdog script | When the IFO loses lock during the lock acquisition
steps, it often kicks the MC2 (through the
CM servo) and trips the watchdog.
|
|
|
1509
|
Thu Apr 23 16:27:24 2009 |
Yoichi | Update | Locking | Locking with the cryo-pump | The last night, the IFO was unstabler than
usual and the locking script often failed
before reaching the power up stage.
|
|
|
1508
|
Thu Apr 23 13:55:43 2009 |
josephb, peter | Update | Computers | RCG example | We successfully compiled and installed
the Real time Code Generator "Hello
World" example (which is a skeleton |
|
|
1507
|
Wed Apr 22 11:16:26 2009 |
steve | Configuration | VAC | Cryo pump is ON and the Maglev is dead | The
CRYO pump cooled down and VC1 was opened.
This |
|
|
1506
|
Tue Apr 21 18:18:27 2009 |
steve | Update | VAC | maglev failed | Our Osaka TG360MB maglev failed with CSB
error message. This means that the dry emergency
landing bearing has to be replaced. |
|
|
1505
|
Mon Apr 20 23:27:59 2009 |
rana | Summary | VAC | c1vac2 rebooted: non-functional for several months | We found several problems with the framebuilder
tonight. The first symptom was that it was
totally out of
|
|
|
1504
|
Mon Apr 20 20:45:25 2009 |
rana | Configuration | General | SVN: project area added | I added the [B]/cvs/cds/project/[/B] directory
to the SVN. I've noticed that we've been
using target/ for code which is not
|
|
|
1503
|
Mon Apr 20 20:00:44 2009 |
rana | Configuration | IOO | McWFS gains re-allocated | Since it looks like the night time people
have been running with a WFS gain of 0.05
and I like the slider
|
|
|
1502
|
Mon Apr 20 19:51:51 2009 |
Jenne | Configuration | PSL | PMC has new Level 13 Mixer installed | The new Level 13 mixer on the PMC servo
board is installed (minicircuits SRA-3MH).
Since the RF output of the LO board was ~16dBm, |
|
|
1501
|
Mon Apr 20 18:36:37 2009 |
rana | Update | Cameras | Mafalda may need an update | Sadly, the sensoray crap doesn't seem to build
on CentOS. I too would prefer a homogenous
solution,
|
|
|
1500
|
Mon Apr 20 18:17:44 2009 |
rob | Summary | Locking | CARM offset/Power rubric | Plotted assuming the average arm power
goes up to ~80. No DARM offset. |
|
|
1499
|
Mon Apr 20 11:57:27 2009 |
rob | Update | Cameras | Mafalda may need an update |
|
|
|
1498
|
Mon Apr 20 05:18:42 2009 |
Yoichi | Configuration | Locking | FM6 and FM10 of LSC-MC were restored | During tonight's locking work, I realized
that FM6 and FM10 (both resonant gains around
20Hz) were actually activated by cm_step.
|
|
|
1497
|
Sun Apr 19 11:51:05 2009 |
josephb | Update | Cameras | Mafalda may need an update | I tried installing libusb-dev on mafalda
in order to try getting the usb frame grabber
to work on it, but could not as it could |
|
|
1496
|
Sun Apr 19 11:34:33 2009 |
josephb | HowTo | Cameras | USB Frame Grabber - How to | To use the Sensoray 2250 USB frame grabber:
Ensure you have the following packages
installed: build-essential, libusb-dev |
|
|
1495
|
Sun Apr 19 03:34:05 2009 |
Yoichi | Update | Locking | Saturday night lock | Tonight I was able to go up to arm power =
33, by mainly tweaking the DARM gain. A small
progress.
|
|
|
1494
|
Fri Apr 17 11:37:32 2009 |
Yoichi | Configuration | Computer Scripts / Programs | AutoDTT | In order to get test point data with AutoDTT,
you have to pre-trigger test points you want
to use.
|
|
|
1493
|
Fri Apr 17 11:05:22 2009 |
Yoichi | Update | Locking | Thursday night locking status | The last night, it was sort of robust to go
up until arm power = 26.
The REFL_DC gain seems to change a lot around |
|
|
1492
|
Thu Apr 16 17:48:00 2009 |
Yoichi | Configuration | Computer Scripts / Programs | AutoDTT | As Peter mentioned in his entry on the last
night's locking, I imported AutoDTT from
Hanford.
|
|
|
1491
|
Thu Apr 16 17:19:44 2009 |
Alberto | Update | Auxiliary locking | the zipper |
|
|
|
1490
|
Thu Apr 16 16:37:42 2009 |
Alberto | Update | Auxiliary locking | the zipper | It takes 18 months to double the computational
power of microprocessors but it took man
thousands of years to invent the zipper. |
|
|
1489
|
Thu Apr 16 16:26:57 2009 |
pete | Update | Locking | Wed. night locking | yoichi, pete
We installed the watchLockLoss script in |
|
|
1488
|
Thu Apr 16 11:17:56 2009 |
Jenne | Update | PSL | Edited c1psl.db to calibrate PMC's LO mon |
|
|
|
1487
|
Wed Apr 15 17:11:37 2009 |
Jenne | Update | PSL | Edited c1psl.db to calibrate PMC's LO mon |
Following the method in Peter's
Elog,
I edited c1psl.db to include
the following:
grecord(calc, "C1:PSL-PMC_LOCALC")
{
|
|
|
1486
|
Wed Apr 15 11:25:21 2009 |
steve | Configuration | VAC | RGA cal completed |
|
|
|
1485
|
Wed Apr 15 03:52:27 2009 |
rana | Update | DMF | NDS client32 updated for DMF | Since |
|