| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
4807
|
Fri Jun 10 20:23:56 2011 |
Larisa Thorne | Update | Electronics | Seismometer Box Update/graphs | (continuation of this)
The noise graphs relating total noise |
|
|
4806
|
Fri Jun 10 18:49:40 2011 |
kiwamu | Update | IOO | Intensity Noise after the MC | Last
night the relative intensity noise (RIN)
of the beam after MC was measured. |
|
|
4805
|
Fri Jun 10 14:50:37 2011 |
Koji | Update | LSC | New LSC code installed | [Koji Jamie]
The new c1lsc code has been installed.
The LSC screens have also been updated (except |
|
|
4804
|
Fri Jun 10 12:04:57 2011 |
Jenne | Update | RF System | Bad RF connections!! | I am in the process of calibrating AS55's
shot noise, and I noticed that the AS55 PD
input to the demod board was only finger-tight. |
|
|
4803
|
Fri Jun 10 12:02:10 2011 |
rana | Update | CDS | Second trends only go back 12 days |
|
|
|
4802
|
Thu Jun 9 20:10:38 2011 |
kiwamu | Update | SUS | ETMY whitening filter : all off | I checked
the state of the whitening filters for the |
|
|
4801
|
Thu Jun 9 18:25:22 2011 |
kiwamu | HowTo | CDS | look back a channel which doesn' exist any more | For
some purposes I looked back the data of some
channels which don't exist any more. |
|
|
4800
|
Thu Jun 9 16:18:03 2011 |
josephb | Update | CDS | Second trends only go back 12 days | While
answering a quick question by Kiwamu, I noticed
we only had second trends going back to 99050000 |
|
|
4799
|
Thu Jun 9 12:21:07 2011 |
kiwamu | Update | PSL | Re : PMC needs help | Nulling
the slow actuation offset fixed the issue. |
|
|
4798
|
Thu Jun 9 10:38:30 2011 |
steve | Update | PSL | PMC needs help | The PMC is losing power. |
|
|
4797
|
Wed Jun 8 23:17:25 2011 |
kiwamu | Update | LSC | DRMI output matrix diagonalization | Approximately
two weeks ago I diagonalized the LSC output
matrix for the DRMI locking. |
|
|
4796
|
Wed Jun 8 22:48:09 2011 |
rana | Update | Cameras | ITM camera lenses changed | I focused these lenses so that we could
get a clean image of the mirrors and the
OSEMs. |
|
|
4795
|
Wed Jun 8 16:41:48 2011 |
valera | Update | ASS | X and Y arm dither alignment status | |
|
|
4794
|
Tue Jun 7 16:11:09 2011 |
steve | Update | Cameras | ITM camera lenses changed | Computar 75-12.5 zooms were installed
for closer look at the resonant spots.
Their alignment and focus needs more loving |
|
|
4793
|
Tue Jun 7 11:39:27 2011 |
Jamie | Update | SUS | No binary output module in ETMY |
|
|
|
4792
|
Mon Jun 6 23:56:16 2011 |
rana, valera | Configuration | SUS | ETMX/ETMY OSEM whitening | We measured the OSEM PD whitening
transfer function of the ETMX OSEM UL whitening
stage ( |
|
|
4791
|
Mon Jun 6 22:41:22 2011 |
rana | Update | SUS | Switching problem in SUS models | Some
weeks ago, Joe, Jamie, and I reworked the
ETMY controls. |
|
|
4790
|
Mon Jun 6 18:29:01 2011 |
Jamie, Joe | Update | CDS | COMPLETE FRONT-END REBUILD (WITH PROBLEMS (fixed)) | Today Joe and I undertook a FULL rebuild
of all front end systems with the head of
the 2.1 branch of the RCG. Here is |
|
|
4789
|
Mon Jun 6 17:28:31 2011 |
steve | Update | Computers | still, no PEM channels |
|
|
|
4788
|
Mon Jun 6 17:22:09 2011 |
valera | Configuration | LSC | Clipping in the X arm 1064 um trans path | I
changed optics in the ETMX transmon path
to remove clipping (which made a false QPD |
|
|
4787
|
Mon Jun 6 16:44:34 2011 |
Koji | Update | Electronics | POY11 tested | The full characterization of POY11 is found
in the PDF.
Resonance at 11.03MHz |
|
|
4786
|
Mon Jun 6 02:09:39 2011 |
rana | Update | Electronics | POY11 Rework Nearly Complete | I've |
|
|
4785
|
Sat Jun 4 15:26:04 2011 |
Larisa Thorne | Update | Electronics | Seismometer Box Update | (continuation of this)
Here are the transfer function and |
|
|
4784
|
Fri Jun 3 18:12:03 2011 |
steve | Update | Computers | no PEM channels | AA filter box was removed and modified
at 1Y7 today. The -5V power supply was current
limited when I plugged it back in. It was |
|
|
4783
|
Fri Jun 3 14:27:32 2011 |
Koji | Update | Electronics | POP55 test results | The full characterization of POP55 is found
in the PDF.
Resonance at 54.49MHz |
|
|
4782
|
Thu Jun 2 23:10:10 2011 |
Koji | Update | Electronics | REFL11 test results (Re: REFL11 fixed) | The full characterization of REFL11 is
found in the PDF.
Resonance at 11.062MHz |
|
|
4781
|
Thu Jun 2 16:31:41 2011 |
Jamie | Update | CDS | aquired SUS channel name suffixes changed from _DAQ to _DQ | CDS changed the suffix for all aquired
channel names from _DAQ to _DQ. When
we rebuilt the sus models, described in the |
|
|
4780
|
Thu Jun 2 16:23:42 2011 |
Jamie | Update | SUS | SUS control models updated to use new sus_single_control library part | A new library part was made for the single
suspension controller (it was originally
made from the c1scx controller), using the |
|
|
4779
|
Thu Jun 2 10:19:37 2011 |
Alex Ivanov | Summary | DAQ | installed new daqd (frame builder) program on fb (target/fb/daqd) | I hope that new daqd code will fix the
problem with non-aligned at 16 seconds frame
file GPS times. |
|
|
4778
|
Wed Jun 1 21:56:43 2011 |
Koji | Update | General | aLIGO BBPD / Green PD final result | Here is the conclusive result for the
circuit configuration for aLIGO BBPD and
40m Green PD. |
|
|
4777
|
Wed Jun 1 13:33:22 2011 |
koji, tara | Update | Electronics | TTFSS #7 | We replaced GE81 by PZT2907A (PNP transistor)
in TTFSS #7, it's working fine.
Last time I broke Q4 transistor, |
|
|
4776
|
Wed Jun 1 11:31:50 2011 |
josephb | Update | CDS | MC1 LR digital reading close to zero, readback ~0.7 volts | There
appears to be a bad cable connection somewhere
on the LR sensor path for the MC1 optic. |
|
|
4775
|
Tue May 31 17:30:42 2011 |
steve | Update | SUS | ETMY damping restored | ETMY's watch dogs were found tripped. They
were restored. |
|
|
4774
|
Tue May 31 16:07:57 2011 |
Larisa Thorne | Configuration | Electronics | Seismometer Box Update | (Continuation of this)
I plugged the circuit into the LISO |
|
|
4773
|
Tue May 31 15:45:37 2011 |
Jamie | Update | CDS | c1iscey IOchassis powered off for some reason. repowered. | We found that both of the c1iscey models
(c1x05 and c1scy) were unresponsive, and
weren't coming back up even after reboot. |
|
|
4772
|
Tue May 31 14:29:00 2011 |
jzweizig | Update | CDS | frames | There seems to be something strange going
on with the 40m frame builder.
Specifically, there is a gap in the |
|
|
4771
|
Tue May 31 11:34:13 2011 |
steve | Summary | SAFETY | safety glasses checked | 1064 nm transmison were measured
of 40m safety glasses as shown . Their performance
did not degrade. They are as good as their |
|
|
4770
|
Tue May 31 11:26:29 2011 |
josephb | Update | CDS | CDS Maintenance | 1) Checked in the changes I had
made to the c1mcp.mdl model just before leaving
for Elba. |
|
|
4769
|
Mon May 30 23:14:27 2011 |
valera | Update | ASC | Y arm initial alignment | I closed all 8 dither loops for the Y arm
initial alignment: 2x2 centering servo (this
worked before) and 2x2 input beam servo for |
|
|
4768
|
Fri May 27 17:52:53 2011 |
steve | Update | LSC | LSC rack cables strain relieved & labeled | LSC rack 1Y2 cables are strain relieved
and labeled. Spare and/or obsolete cables
are laid out on the top of the beam tube |
|
|
4767
|
Thu May 26 17:10:21 2011 |
Jamie | Configuration | LSC | New digital lockin added to LSC model/screen |
|
|
|
4766
|
Wed May 25 20:12:55 2011 |
Jamie | Configuration | LSC | New digital lockin added to LSC model/screen |
|
|
|
4765
|
Wed May 25 19:19:11 2011 |
Jamie | Configuration | CDS | !!!CHECK IN YOUR MODELS!!! | !!!CHECK
IN MODEL CHANGES!!!
Today
I found three models that were modified, |
|
|
4764
|
Wed May 25 19:03:59 2011 |
Jamie | Configuration | CDS | Update rtcds checkout of cds_user_apps with new top-level directory names. | The top-level subsystem subdirectories
in the cds_user_apps source repository were
renamed today to be all lower case. |
|
|
4763
|
Mon May 23 18:16:42 2011 |
Koji | Configuration | LSC | POY55 installed | The DC Transimpedance of POP55 was increased
from 50 Ohm to 10010 Ohm. There is the offset
of 46mV. This should be cancelled in the |
|
|
4762
|
Mon May 23 18:10:41 2011 |
kiwamu | Update | LSC | f2p filters on PRM : not good | During
the DRMI trial I noticed that the f2p filters
on PRM is not quite effective |
|
|
4761
|
Mon May 23 14:28:23 2011 |
kiwamu | Configuration | LSC | POY55 installed | Last
Saturday the POY55 RFPD (see
this entry |
|
|
4760
|
Mon May 23 12:27:26 2011 |
kiwamu | Update | LSC | DRMI trial : details | (PRMI
locking with slightly misaligned SRM)
First I tried locking PRC and |
|
|
4759
|
Mon May 23 00:36:51 2011 |
kiwamu | Update | LSC | DRMI trial : sucess | Eventually the
D |
|
|
4758
|
Sat May 21 17:02:38 2011 |
Koji | Update | Electronics | Alberto's 11MHz was modified to POP55MHz | - Resonant at 55MHz. The transimpedance
is 258Ohm. That is about half of REFL55 (don't
know why). |
|