ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
12308
|
Mon Jul 18 05:05:05 2016 |
Aakash | Update | General | Heater for Seismometer Enclosure | SURF 2016 | I took off the silicon rubber heaters which
were used by a SURF last year for heating
the enclosure. The heater data sheet has |
 |
12309
|
Mon Jul 18 18:44:52 2016 |
varun | Update | CDS | c1lsc FE recovered | c1lsc FE is up and running.
Details:
2) The machine was manually rebooted. |
|
12310
|
Tue Jul 19 13:21:42 2016 |
Johannes | Update | General | Vent progress - ETMY attempted repositioning | [Lydia, Johannes]
We moved ITMY from its original
position to a place near the access point. |
|
12311
|
Tue Jul 19 15:16:43 2016 |
Steve | Update | safety | safety training | Our new graduate student Lydia received
40m specific safety training. |
|
12312
|
Tue Jul 19 15:30:08 2016 |
Steve | Update | General | HEPA dryer and dust | I set up a simple HEPA filter dryer to
dry your clean room garment before
you can put it away into your storage box. |
|
12313
|
Tue Jul 19 16:39:29 2016 |
Lydia | Update | General | ETMX magnet gluing/guiderod excess glue removed | [ericq, Lydia]
The epoxy arrived. Eric managed
to remove the excess glue below the |
 |
12314
|
Wed Jul 20 11:39:07 2016 |
Steve | Update | VAC | vent 78 day 20 | RGA background scan
|
|
12315
|
Wed Jul 20 13:58:55 2016 |
Steve | Update | SUS | SUS damping out of vac chamber | Cheater
cable to be used in clean room pitch
gluing alingment. |
   |
12316
|
Wed Jul 20 14:03:01 2016 |
ericq | Update | SUS | Effect of thicker ruby standoffs | The new ETMX ruby guide rods are slightly
thicker than the old aluminum ones; specifically
1.27mm vs 1.0mm. |
|
12317
|
Thu Jul 21 05:22:26 2016 |
Aakash | Update | General | Temperature measurements across the enclosure | SURF 2016 | I have measured the transfer function of
temperature fluctuations inside the enclosure
to that of the temperature fluctuations outside. |
   |
12318
|
Thu Jul 21 08:24:20 2016 |
Steve | Update | PEM | ants alart | The heat drives the ants to the lab!
Make sure the light doors are tight on the
chambers. |
|
12319
|
Thu Jul 21 12:03:35 2016 |
varun | Update | CDS | DAFI update: Humming noise in DAFI output |
Summary: There |
|
12320
|
Thu Jul 21 14:27:24 2016 |
varun | Update | CDS | DAFI Update: Arbitrary Math block | Summary: I have added
an arbitrary math block to the DAFI model,
which takes two inputs, say X and Y, and |
 |
12321
|
Thu Jul 21 15:03:13 2016 |
varun | Update | CDS | DAFI Update | 1) I have added the status summary of the
DAFI block to the main FE status overview
screen in the c1lsc cloumn. (attachment 1) |
 |
12322
|
Thu Jul 21 17:01:59 2016 |
ericq | Update | General | ETMX magnet gluing/guiderod excess glue removed | One step forward, two steps back...
While attempting to suspend ETMX,
I broke off a side magnet |
|
12323
|
Thu Jul 21 21:38:44 2016 |
Aakash | Update | General | Temperature measurements across the enclosure | SURF 2016 | I have made the changes as suggested by
Gautam. |
|
12324
|
Thu Jul 21 22:02:35 2016 |
varun | Update | CDS | DAFI update: Frequency warping | The code for frequency warping contained
a "printf()" command, which had
caused the system to crash in one another |
|
12325
|
Fri Jul 22 03:02:37 2016 |
Koji | Update | COC | FC painting | [Koji Gautam]
We have worked on the FC painting
on ITMX and ITMY. We |
11x |
12326
|
Fri Jul 22 05:20:26 2016 |
Aakash | Update | General | Temperature measurements across the enclosure | SURF 2016 | Please find the new attached plots and
the new script. |
   |
12327
|
Fri Jul 22 23:03:23 2016 |
gautam | Update | General | ETMX suspension - progress | [ericq, gautam]
Summary:
Today, we attempted to progress |
    |
12328
|
Sun Jul 24 03:43:56 2016 |
ericq | Update | General | Magnet positioning | When Koji and I were gluing magnets to
ETMY, we decided to position the side magnet
based on the empirically observed offsets |
|
12329
|
Mon Jul 25 10:54:55 2016 |
Praful | Update | Computer Scripts / Programs | Finished MEDM Tab on Summary Pages | The MEDM screen capture tab is now working
and up on the summary pages: https://nodus.ligo.caltech.edu:30889/detcharsummary/day/20160725/medm/
Please let me know if you have |
|
12330
|
Mon Jul 25 12:22:18 2016 |
rana | Update | Computer Scripts / Programs | Finished MEDM Tab on Summary Pages | Looks pretty great. However, there's
two problems:
1) Some of the MEDM screens don't |
|
12331
|
Mon Jul 25 13:01:49 2016 |
ericq | Update | General | ETMX suspension - progress | (Full resolution versions of the photos
in this ELOG are on picasa)
The OSEM gender changers were not |
    |
12332
|
Mon Jul 25 13:47:19 2016 |
rana | Update | General | ETMX suspension - progress | Ugh. |
|
12334
|
Mon Jul 25 17:01:54 2016 |
Steve | Update | SUS | ETMX suspension - progress | ITMY side : Magnet od 1.9 mm so wire
to magnet gap ~ 0.2-0.3 mm
|
|
12335
|
Mon Jul 25 20:37:46 2016 |
gautam | Update | General | ETMX suspension - Side OSEM test | [Lydia, gautam]
Summary: We
did some preliminary tests to check if at |
|
12336
|
Tue Jul 26 09:56:34 2016 |
ericq | Update | CDS | c1susaux restarted | c1susaux (which controls watchdogs and
alignments for all non-ETM optics) was down,
the last BURT was done yesterday around 2PM. |
|
12340
|
Tue Jul 26 18:07:57 2016 |
gautam | Update | General | ETMX suspension - Further OSEM Tests | Today, we did the following:
Once again, inserted all
four face OSEMs till the sensor voltage readouts |
|
12344
|
Wed Jul 27 22:42:00 2016 |
Praful | Update | Electronics | EM172 Amplifier | I recreated Den's microphone amplifier
circuit on a solderless breadboard to test
it and make sure it does what it's supposed |
|
12345
|
Thu Jul 28 03:22:28 2016 |
ericq | Update | General | ETMX magnets re-reglued | [gautam, ericq]
Brief summary, some pictures and
such follow in the daytime. |
|
12346
|
Thu Jul 28 08:42:36 2016 |
Steve | Update | SUS | wire clamp | The clamp is in the machine for milling
off the grooves. It's condition is normal.
The edges needs some 800 sand paper so it |
|
12347
|
Thu Jul 28 13:49:44 2016 |
gautam | Update | General | ETMX magnets re-reglued |
|
 |
12348
|
Thu Jul 28 16:43:01 2016 |
Lydia | Update | General | ETMX aluminium standoff groove condition |
I took some pictures with the digital
microscope of the aluminum standoffs |
   |
12349
|
Thu Jul 28 17:48:17 2016 |
gautam | Update | General | ETMY LR magnet broke off | While ETMX magnets were curing, I wanted
to try and suspend ETMY in the endchamber,
put in the OSEMS and see if the magnets aligned |
|
12350
|
Thu Jul 28 22:43:03 2016 |
rana | Update | General | ETMY UL magnet broke off | I'd recommend replacing the wire and
grinding down the clamp to prevent cutting
the wire. Since we have almost never replaced |
|
12351
|
Fri Jul 29 03:32:30 2016 |
ericq | Update | General | ETMX suspended once more | [gautam, ericq]
Tonight's progress on ETMX:
All pickle pickers removed |
|
12353
|
Fri Jul 29 03:59:55 2016 |
ericq | Update | SUS | In air OSEM diagonalization check | The question arose whether we can get good
enough data to diagonize our OSEM sensing
matrices in air. |
|
12354
|
Fri Jul 29 13:17:34 2016 |
Koji | Update | General | Oven | While the air bake oven situation is being
improved, how about to buy a cheepo toaster
oven at Target, BestBuy, or anywhere? |
|
12355
|
Fri Jul 29 15:17:23 2016 |
Steve | Update | SUS | wire and clamping test | Unbaked steel music wire from "Ca
Fine Wire Co" from 24" od spool,
od 0.0017" used. Identical to the one |
|
12356
|
Fri Jul 29 19:37:43 2016 |
Praful | Update | Electronics | Mic Amplifier | I set up a test inverting amplifier circuit
using the LT1677 opamp:
|
7x |
12357
|
Fri Jul 29 20:12:54 2016 |
gautam | Update | SUS | third time - no luck | [lydia, gautam]
Summary: |
|
12359
|
Mon Aug 1 14:09:20 2016 |
Steve | Update | SUS | third time - no luck | Gautam and Steve,
The clamp's left side was jammed
onto the left guide pin. It was installed |
|
12360
|
Mon Aug 1 18:50:29 2016 |
Aakash | Update | General | Acromag Setup | SURF2016 | There were many unknown and unsolved problems
with using modbusApp for linux-arm architecture.
So I tried to install the necessary files |
7x |
12361
|
Mon Aug 1 20:09:37 2016 |
rana | Update | CDS | DAFI Update | I found the DAFI screen as a button inside
of the LSC screen - I think its more logically
found from the sitemap, so I'll move |
|
12362
|
Wed Aug 3 00:15:39 2016 |
gautam | Update | SUS | ETMX suspended | [lydia, steve, ericq, gautam]
Summary: |
|
12363
|
Wed Aug 3 09:26:54 2016 |
Lydia | Update | SUS | ETMX suspended: photos | Here are the photos we took showing the
magnet positions in the OSEMs, and others
showing the positions of the wire and unglued |
8x |
12364
|
Wed Aug 3 10:52:03 2016 |
Steve | Update | General | ETMY soaking dish | ETMY UL epoxy soaking dish. All teflon
in glass.
|
  |
12366
|
Wed Aug 3 15:35:19 2016 |
Aakash | Update | General | Acromag Setup | SURF2016 | Lydia helped me to troubleshoot the Accromag
connection problems which I was facing previously.
If power goes off/turned off manually, the |
|
12367
|
Wed Aug 3 15:36:57 2016 |
Steve | Update | SUS | Ni plated magnets & epoxy ordered | Ni plated SmCo magnets with specification
of LIGO-C1103521-v2 for SOS ordered from Electron |
|