| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2975
|
Mon May 24 14:28:35 2010 |
kiwamu | Update | Electronics | bad power supply of a vme rack | In this morning I found daqawg didn't work.
After looking for the cause, I found |
|
|
2974
|
Mon May 24 11:32:05 2010 |
rana | Update | LSC | 40mUpgrade Field Power and RF Power Spectrum at the ports. 38m/38.55m arm length issue. |
|
|
|
2973
|
Mon May 24 10:03:14 2010 |
rana | Update | LSC | 40mUpgrade Field Power and RF Power Spectrum at the ports. 38m/38.55m arm length issue. |
If you have a working 40m Optickle
model, put it in a common place in the SVN, |
|
|
2972
|
Mon May 24 07:53:57 2010 |
steve | Configuration | PEM | air cond. just turned ON | IFO room temp 27.5C , Please remember to
turn AC back on ! |
|
|
2971
|
Fri May 21 16:41:38 2010 |
Alberto, Jo | Update | Computers | It's a boy! | Today the new Dell computer for the GSCS
(General SURF Computing Side) arrived.
We put it together and hooked it |
|
|
2970
|
Fri May 21 16:37:35 2010 |
steve | Configuration | VAC | tp3's drypump replaced | Bob replaced the tipseal in an other drypump
and I swapped it in. TP3 turbo is running
again, it's foreline pressure is 40 mTorr. |
|
|
2969
|
Fri May 21 16:27:45 2010 |
Alberto | Omnistructure | Environment | The control room is molding... | ... not just because we haven't locked
the interferometer for quite some time. I
mean, it literally stinks. The chiller's |
|
|
2968
|
Fri May 21 16:24:11 2010 |
Koji | Update | LSC | 40mUpgrade Field Power and RF Power Spectrum at the ports. 38m/38.55m arm length issue. | 1. Give us the designed arm length. What
is the criteria?
2. The arm lengths got shorter as |
|
|
2967
|
Fri May 21 14:31:46 2010 |
josephb,alex | Update | CDS | New computer and IO chassis working in 1X4 | Alex brought over a ADC, DAC, and PCIe
card which goes into the computer and talk
to the IO chassis. We tried installing |
|
|
2966
|
Fri May 21 11:56:34 2010 |
Alberto | Update | 40m Upgrading | 40mUpgrade Field Power and RF Power Spectrum at the ports. 38m/38.55m arm length issue. | I update my old 40mUpgrade Optickle model,
by adding the latest updates in the optical
layout (mirror distances, main optics transmissivities, |
7x |
|
2965
|
Fri May 21 08:28:29 2010 |
steve | Configuration | VAC | TP3 turned off |
|
|
|
2964
|
Fri May 21 00:51:06 2010 |
Jenne | Update | IOO | First MC mode measuring (hopefully) done | [Jenne, Kiwamu, Steve]
Round 1 of measuring the MC mode
is pretty much done. Yay. |
|
|
2963
|
Fri May 21 00:30:44 2010 |
Jenne | Update | VAC | TP3 fore pump is very loud | [Jenne, Kiwamu, and Steve via phone]
Around 9:30pm, Kiwamu and I came
back from dinner, and were getting ready |
|
|
2962
|
Fri May 21 00:21:24 2010 |
Jenne | Update | SAFETY | Don't walk down the Y(new convention) arm tonight! | All clear.
|
|
|
2961
|
Thu May 20 20:03:37 2010 |
Jenne | Update | SAFETY | Don't walk down the Y(new convention) arm tonight! | Please don't go
down the Yarm (Old Xarm) for right now, or |
|
|
2960
|
Thu May 20 14:18:59 2010 |
kiwamu | Update | Green Locking | mode profile of 40m cavity | The mode
profile of the green beam going through 40m |
|
|
2959
|
Thu May 20 13:29:40 2010 |
kiwamu | Update | Green Locking | mode profile at PPKTP crystal | I measured again the mode profile
of the beam going through the PPKTP crystal
by using the beam scan. |
|
|
2958
|
Thu May 20 13:12:28 2010 |
josephb | Update | CDS | Preparations for testing lsc,lsp, scy,spy together | In /cvs/cds/caltech/target/fb modified:
master: cleaned up so only io1 (IO
processor), LSC, LSP, SCY, SPY were listed, |
|
|
2957
|
Thu May 20 12:34:46 2010 |
kiwamu | Configuration | 40m Upgrading | optical breadboards with legs | Yesterday Steve and I revived two legs
to mount some optical breadboards outside
of the end table. |
|
|
2956
|
Thu May 20 12:10:44 2010 |
kiwamu | Update | Photos | ETMY end table | I updated the photo of ETMY end table
on the wiki.
http://lhocds.ligo-wa.caltech.edu:8000/40m/Optical_Tables |
|
|
2955
|
Thu May 20 10:06:56 2010 |
Aidan | HowTo | Phase Camera | Phase Camera- raw data video | |
|
|
2954
|
Wed May 19 22:28:05 2010 |
Koji | Update | IOO | Hooray! We locked the MC! (and some other stuff) | Good! What was the key?
The MC2 spot looks very high, but
don't believe the TV image. Believe the result |
|
|
2953
|
Wed May 19 16:09:11 2010 |
josephb | Update | CDS | Racks to small for IO Chassis rails | So I discovered the hard way that the racks
are not standard width, when I was unable
to place a new IO chassis into the racks |
|
|
2952
|
Wed May 19 16:00:18 2010 |
Jenne | Update | IOO | Hooray! We locked the MC! (and some other stuff) | [Jenne, Kevin]
We opened up the MC chambers again,
and successfully got the MC locked today! |
|
|
2951
|
Wed May 19 14:36:46 2010 |
Aidan | HowTo | Phase Camera | Phase Camera algorithm and stuff | I had a think about the algorithm
we might use for the phase camera measurement.
MATLAB has an fft function that will allow |
|
|
2950
|
Tue May 18 23:03:08 2010 |
Jenne | Update | IOO | No real progress.... | [Jenne, Kevin]
No real progress today. We
opened the chambers and again tried to lock |
|
|
2949
|
Tue May 18 16:44:35 2010 |
Koji | Update | IOO | First steps toward MC mode measuring | Here is the upadted list http://lhocds.ligo-wa.caltech.edu:8000/40m/Upgrade_09/Optics
|
|
|
2948
|
Tue May 18 16:19:19 2010 |
josephb | Update | CDS | We have two new IO chassis | We have 2 new IO chassis with mounting
rails and necessary boards for communicating
to the computers. Still need boards |
|
|
2947
|
Tue May 18 15:09:02 2010 |
steve | Configuration | SAFETY | PSL output shutter in order again |
|
|
|
2946
|
Tue May 18 14:30:31 2010 |
josephb | Update | CDS | LSC.mdl problem found and fixed | After having checked old possibilities
and deciding I wasn't imagining the lsc.mdl
file not working, but working as another |
|
|
2945
|
Tue May 18 12:04:13 2010 |
rob | Update | IOO | First steps toward MC mode measuring |
|
|
|
2943
|
Tue May 18 11:54:29 2010 |
steve | Configuration | SAFETY | psl mechanical shutter is not working | As we learned yesterday, the PSL laser
power out put mechanical shutter is not working
in the remote mode. It only works in local |
|
|
2942
|
Tue May 18 01:40:56 2010 |
Koji | Update | IOO | First steps toward MC mode measuring | OK. Don't worry. This is just an initial
confusion which we also had for the suspensions
a while ago. |
|
|
2941
|
Mon May 17 19:42:11 2010 |
Jenne | Update | IOO | First steps toward MC mode measuring | [Jenne, Kevin, Steve]
We made some progress toward getting
the MC's beam profile measured. In |
|
|
2940
|
Mon May 17 17:17:49 2010 |
josephb, steve, alberto, kiwamu | Update | CDS | New CDS computers now in racks. | We placed 3 new computers in the racks.
One in 1X4 (machine running SCX) and 2 in
1Y4 (LSC and SUS). These are 1U chassis, |
|
|
2939
|
Mon May 17 10:57:16 2010 |
steve | Configuration | SUS | damping restored to ETMYs | ETMY-south sus damping was restored |
|
|
2938
|
Mon May 17 02:10:10 2010 |
Koji | Configuration | IOO | How to lock / align the MC | Let
me remind you how to lock and align the IMC
To lock |
|
|
2937
|
Sun May 16 19:25:45 2010 |
Koji | Update | Green Locking | reflected beam at PD | Don't
make a short cut. The beam size at a single
place does not tell you anything. |
|
|
2936
|
Sun May 16 12:51:08 2010 |
kiwamu | Update | Green Locking | reflected beam at PD | Mode matching
to the cavity has been done. |
|
|
2935
|
Sat May 15 04:13:33 2010 |
Koji | Summary | IOO | MC table leveled | Fixing at the next time is absolutely OK.
|
|
|
2934
|
Fri May 14 16:19:22 2010 |
Jenne | Update | PEM | Guts of a Guralp | [Jenne, Rana]
We took apart and examined one of
the Guralp seismometers this afternoon. |
|
|
2933
|
Fri May 14 16:14:37 2010 |
Kevin | Update | Green Locking | Green Laser Beam Profile |
|
|
|
2932
|
Fri May 14 12:14:26 2010 |
josephb | Update | CDS | Need to track down old code for lsc system and remove them | I'm currently in the process of tracking
down what legacy code is interfering with
the new lsc model. |
|
|
2931
|
Fri May 14 10:33:01 2010 |
Zach | Summary | IOO | MC table leveled | Ah... no, I didn't. That explains why there
were loose dogclamps on the table. I wrapped
them in foil and put them on the clean cart. |
|
|
2930
|
Fri May 14 08:18:46 2010 |
steve | Update | Green Locking | Reflection from ETM and ITM ! | I stopped AWG 1 Hz drive to ITMYs.
ITMXe was also driven or oscillating. ITMXe
damping was off, so I turned it on. It did |
|
|
2929
|
Fri May 14 03:30:45 2010 |
Koji | Summary | IOO | MC table leveled | Thanks Zach.This was a great job.
It was not mentioned but: was the
Faraday clamped down on the table? |
|
|
2928
|
Thu May 13 23:59:46 2010 |
Zach | Summary | IOO | MC table leveled | After the recent removal of the old
IMMT and the relocation of the Faraday isolator,
the MC table was tilted a bit (southward |
|
|
2927
|
Thu May 13 15:19:44 2010 |
josephb | Update | CDS | Trying to get lsc.mdl and lsp.mdl working | I had a chat with Alex this morning and
discovered that the dcu_ids 13,14,15,16 are
reserved currently, and should not be used. |
|
|
2926
|
Thu May 13 05:06:43 2010 |
rana | Update | 40m Upgrading | 216 MHz resonance in the POY11 PD killed |
This idea was tried before
by Dale in the ~1998 generation of PDs. Its |
|
|
2925
|
Wed May 12 23:31:17 2010 |
Alberto | Update | 40m Upgrading | 216 MHz resonance in the POY11 PD killed | It turned out that the resonance at 216
MHz in the 11MHz PD that I showed in the
elog entry 2902 |
|