| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
9970
|
Mon May 19 09:19:44 2014 |
Steve | Update | LSC | happy IFO | 15 hours |
|
|
9971
|
Mon May 19 22:44:21 2014 |
den | Update | PEM | xend sei isolation kit is set |
|
|
|
9972
|
Tue May 20 02:12:35 2014 |
Jenne | Update | LSC | ALS X noise investigation | [Rana, Jenne]
We
have looked at a few things that do and don't |
|
|
9974
|
Tue May 20 11:48:22 2014 |
Steve | Update | SUS | beam dumps added to ETMX_ISCT | Anodized aluminum dumps replaced by 6 razor
beam dumps.
Two more razor beam dumps added this |
|
|
9976
|
Tue May 20 16:48:52 2014 |
ericq | Update | LSC | 3f Stability | So, I really should have done this as soon
as Manasa
measured the arm lengths... I've |
|
|
9977
|
Tue May 20 22:42:28 2014 |
ericq | Update | LSC | 3f Stability | Here's the angles of MICH and PRCL
from the my earlier plot by themselves; this
shows that the individual demod angles in |
|
|
9978
|
Wed May 21 00:18:40 2014 |
Jenne | Update | LSC | PRMI locked with REFL33 vs. REFL165 | Since Q has found that REFL165 will be
better for holding the PRMI while we reduce
the CARM offset, I had a look at locking |
|
|
9979
|
Wed May 21 05:05:39 2014 |
Jenne | Update | LSC | REFL 165 vs 33 investigations | [Rana, Jenne]
We spent some time tonight looking
at locking the PRMI with REFL165 vs. REFL33, |
|
|
9980
|
Wed May 21 09:35:33 2014 |
Steve | Update | SUS | razor beam dumps ETMX_ISCT |
|
|
|
9981
|
Wed May 21 11:11:01 2014 |
manasa | Update | IOO | MC tuned | I found MC unlocked this morning. I looked
at the 2 day trend of the MC suspensions
and found MC2 suspensions have been misaligned. |
|
|
9982
|
Wed May 21 13:18:47 2014 |
ericq | Update | CDS | Suspension MEDM Bug | I fixed a bug in the SUS_SINGLE screen,
where the total YAW output was incorrectly
displayed (TO_COIL_3_1 instead of TO_COIL_1_3). |
|
|
9983
|
Wed May 21 13:20:34 2014 |
manasa | Update | LSC | ALS X noise from angular motion of mirrors |
|
|
|
9984
|
Wed May 21 13:51:19 2014 |
Steve | Update | safety | scope battery recall | Tektronix RECALL
on TDS3000 or TDS300B oscilloscope |
|
|
9986
|
Wed May 21 22:15:37 2014 |
ericq | Update | PSL | PMC relocked | PMC has been unlocked for ~4hrs, not sure
why. It's servo gain was down at -10dB...
Relocked with transmission of .76V, |
|
|
9988
|
Thu May 22 00:30:40 2014 |
manasa | Update | LSC | ALS X noise from angular motion of mirrors | Below are the transfer functions measured
between the angular (pit, yaw) motion of
X arm mirrors and the ALSX error signal. |
|
|
9989
|
Thu May 22 11:21:06 2014 |
Steve | Update | SUS | ETMX oplev |
|
|
|
9990
|
Fri May 23 11:58:28 2014 |
manasa | Update | Green Locking | Y arm green alignment tuned | The Y arm green transmission had come down
to 0.3 and the green steering mirrors on
the Y end table required some minor alignment |
|
|
9991
|
Sat May 24 22:56:57 2014 |
Jenne | Update | Electronics | Amplifier removed from BeatX path | I just realized that I forgot to elog this,
but yesterday afternoon I bypassed the amplifier
in the BeatX path, and now the X beatnote |
|
|
9992
|
Mon May 26 07:59:23 2014 |
Koji | Update | Electronics | Amplifier removed from BeatX path | And the out-of-loop level of the ALSX compared
with the previous measurement is ...?
|
|
|
9993
|
Mon May 26 20:10:14 2014 |
ericq | Update | PSL | PMC relocked | I came in and PMC transmission was at 0.5V,
and ETMX was swinging around a lot, (LSC
mode was on). |
|
|
9994
|
Tue May 27 11:00:43 2014 |
Steve | Update | VAC | RGA scan at day 111 |
Rga scan at pump down 77, vacuum
normal valve configuration, maglev rotation |
|
|
9995
|
Tue May 27 11:58:45 2014 |
Jenne | Update | Electronics | Amplifier removed from BeatX path | Sorry, I had been in a hurry when I worked
on this last week, and again when I wrote
the elog, but I wanted to at least put in |
|
|
9996
|
Tue May 27 21:48:31 2014 |
Jenne | Update | LSC | X green broadband PD not working???!? | Grr. I am very frustrated.
After lunch I redid alignment for both X
and Y green systems (Yarm both at the end |
|
|
9997
|
Tue May 27 22:29:17 2014 |
Jenne | Update | PSL | PSL making noises | Also, while I was working on the PSL table,
I heard noise that sounded like a bearing
rolling around. I suspected the HEPAs, |
|
|
9998
|
Wed May 28 11:55:16 2014 |
Steve | Update | PSL | PSL Innolight controller fan is noisy |
|
|
|
9999
|
Wed May 28 14:13:06 2014 |
manasa | Update | IOO | MC relocked |
|
|
|
10000
|
Wed May 28 17:51:48 2014 |
manasa | Update | LSC | X green broadband PD NOT working |
|
|
|
10001
|
Wed May 28 19:15:38 2014 |
Koji | Update | LSC | X green broadband PD NOT working | If the PD is the suspect, just pull it
from the table and bring it to the PD testing
setup. |
|
|
10002
|
Thu May 29 02:16:02 2014 |
ericq | Update | LSC | High Bandwidth power recycled Yarm. | I'll put more detail in the morning, but
I was able to get the PRM/ITMY/ETMY coupled
cavities locked with 32kHz bandwidth using |
|
|
10003
|
Thu May 29 08:43:34 2014 |
manasa | Update | PEM | Ant season already in | Ant season has set in. I spotted and killed
a few ants around the optics |
|
|
10004
|
Thu May 29 14:40:17 2014 |
Koji | Update | LSC | High Bandwidth power recycled Yarm. | Wait. It is not so clear.
Do you mean that the IFO was locked
with REFL11I for the first time? |
|
|
10005
|
Thu May 29 15:33:55 2014 |
ericq | Update | LSC | High Bandwidth power recycled Yarm. |
|
|
|
10006
|
Fri Jun 6 14:56:09 2014 |
ericq | Update | elog | Aaaaaand we're back! | ELOG is back up and running after last
Friday's disk-crash-a-thon. SVN is still
a work in progress. Jenne and I are now restarting |
|
|
10007
|
Mon Jun 9 09:41:06 2014 |
steve | Update | safety | safety training | 2014 surf students Nichin and Akhil received
40m specific basic safety training last week. |
|
|
10008
|
Mon Jun 9 09:51:11 2014 |
Sai Akhil | Update | Electronics | Frequency Error Measurement of UFC-6000 RF Frequency Counter | Motivation:
To test the
precision of Mini-Circuits Model UFC-6000 |
|
|
10010
|
Mon Jun 9 11:42:00 2014 |
Jenne | Update | CDS | Computer status | Current computer status:
All fast machines except c1iscey
are up and running. I can't ssh to c1iscey, |
|
|
10011
|
Mon Jun 9 12:19:17 2014 |
ericq | Update | CDS | Computer status |
|
|
|
10013
|
Mon Jun 9 19:02:34 2014 |
Evan, Eric | Update | Computer Scripts / Programs | SVN is back | The SVN Apache server was not happy trying
to read from /cvs/cds/caltech/svn/;
it complains "Value too large for defined |
|
|
10015
|
Mon Jun 9 22:26:44 2014 |
rana, zach | Update | CDS | SLOW controls recovery | All of the SLOW computers were
in limbo since the fileserver/nameserver
change, but me and Zach brought them back. |
|
|
10016
|
Mon Jun 9 22:40:36 2014 |
Jenne | Update | CDS | Fast front end computers up | Rana
and I now seem to have the fast front end
computers (c1lsc, c1sus, c1ioo, c1iscex and |
|
|
10017
|
Mon Jun 9 23:08:58 2014 |
Jenne | Update | IOO | MC board checkout | Rana mentioned this in his elog entry re:
SLOW computer recovery, but I want to highlight
it: |
|
|
10018
|
Tue Jun 10 09:25:29 2014 |
Jamie | Update | CDS | Computer status: should not be changing names | I really think it's a bad |
|
|
10020
|
Tue Jun 10 12:49:46 2014 |
Akhil | Update | Computer Scripts / Programs | Interfacing UFC-6000 with Raspberry Pi completed | Goal:
To interface the Mini Circuits
RF Frequency Counter(FC) Model UFC-6000 with |
|
|
10023
|
Wed Jun 11 08:57:49 2014 |
Steve | Update | PEM | air cond maintenance tomorrow morning |
|
|
|
10025
|
Wed Jun 11 14:36:57 2014 |
Jenne | Update | CDS | SLOW controls recovery |
I have brought back c1auxex
and c1auxey. Hopefully this elog |
|
|
10026
|
Wed Jun 11 14:41:11 2014 |
Jenne | Update | SUS | Burt restored c1scxepics | ETMX had default 1's for gains, 0's for
matrix elements, etc., so I did a burt restore
to May 25th, 2pm, which was a few days before |
|
|
10027
|
Wed Jun 11 15:57:18 2014 |
Jenne | Update | CDS | Note on cables for talking to slow computers | We have (now) in the lab 2 cables that
are RJ45-DB9. The gray one is LIGO-made,
while the blue one is store-bought. |
|
|
10028
|
Wed Jun 11 16:01:31 2014 |
Steve | Update | CDS | c1Vac1 and c1vac2 rebooted |
|
|
|
10030
|
Thu Jun 12 10:41:58 2014 |
Steve | Update | PSL | PMC-T trend of 4 years |
|
|
|
10033
|
Thu Jun 12 15:31:47 2014 |
Jamie | Update | CDS | Note on cables for talking to slow computers |
|
|