| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
15512
|
Mon Aug 10 07:13:00 2020 |
Yehonathan | Update | BHD | Monte Carlo Simulations | I fixed some stuff in the MCMC simulation:
1. Results are now plotted as shades
from minimum to maximum. I tried making the |
8x |
|
15539
|
Tue Aug 25 05:51:29 2020 |
Yehonathan | Update | BHD | Monte Carlo Simulations | I re-plotted the MCMC results as semi-transparent
lines so that probable lines stick out.
This also reveals what is behind |
8x |
|
15569
|
Mon Sep 14 07:50:01 2020 |
Yehonathan | Update | BHD | Monte Carlo Simulations | Turns out what was causing the instability
in the aLIGO plots were the lock
commands which I forgot to remove before |
10x |
|
15631
|
Fri Oct 16 09:16:37 2020 |
Yehonathan | Update | BHD | Monte Carlo Simulations | Pushed another update to MCMC simulation.
This includes:
Added new imbalances: ITM |
8x |
|
15637
|
Thu Oct 22 11:48:08 2020 |
Yehonathan | Update | BHD | Monte Carlo Simulations | I found this H1 alog entry
by Izumi confirming that the calibrated channels
CAL-CS_* need the same dewhitening filter. |
8x |
|
15727
|
Thu Dec 10 14:48:00 2020 |
Yehonathan | Update | BHD | Monte Carlo Simulations | I have rebuilt the MCMC simulation in an
OOP fashion and incorporated Lance/Pytickle
functionality into it. The usage of the MCMC |
|
|
15734
|
Mon Dec 14 11:09:28 2020 |
Yehonathan | Update | BHD | Monte Carlo loop coupling Simulations | I spent a few hours monkeying around with
the control filters. They are totally made
up and also it's my first time trying |
|
|
15758
|
Mon Jan 11 16:11:51 2021 |
Yehonathan | Update | BHD | Monte Carlo loop coupling Simulations | I dived into the alog to make the OLTFs
in the MC_controls example more realistic.
I was mainly inspired by these entries: |
|
|
15796
|
Thu Feb 4 15:14:55 2021 |
Yehonathan | Update | BHD | SOS assembly | I gathered all the components I could find
from the SOS towers and the cleanroom and
put it all on the table next to the flow |
|
|
15808
|
Tue Feb 16 13:13:39 2021 |
Yehonathan | Update | BHD | SOS assembly | Gautam pointed out that there are extra
Sm-Co magnets stored in the clean optics
cabinet. |
|
|
15811
|
Tue Feb 16 22:59:36 2021 |
Yehonathan | Update | BHD | SOS assembly | Done.
Also, the magnets are nickel-plated.
I guess that doesn't matter for the baking |
|
|
15821
|
Fri Feb 19 12:21:04 2021 |
Yehonathan | Update | BHD | SOS assembly | A summary of things that need to be fabricated/purchased/done:
|
|
|
15832
|
Mon Feb 22 14:06:49 2021 |
Yehonathan | Update | SUS | OSEM testing for SOSs | Continuing with the OSEM testing. I measure
the resistance of the wires from the RLC
meter to the coil to be ~ 0.9ohm. I will |
|
|
15838
|
Wed Feb 24 10:23:03 2021 |
Yehonathan | Update | SUS | OSEM testing for SOSs | Continuing with the new rig, I measure
the resistance of the cable leading to the
coil to be 0.08+(0.52-0.08)+(0.48-0.08)=0.9ohm. |
|
|
15856
|
Wed Mar 3 11:51:07 2021 |
Yehonathan | Update | SUS | OSEM testing for SOSs | I finished testing the OSEMs. I put all
the OSEMs back in the box. The OSEMS were
divided into several bags. I put the OSEM |
|
|
15886
|
Tue Mar 9 14:30:22 2021 |
Yehonathan | Update | SUS | OSEM testing for SOSs | I finished ranking the OSEMS on the OSEM
wiki page. |
|
|
15891
|
Tue Mar 9 18:49:28 2021 |
Yehonathan | Update | SUS | OSEM testing for SOSs | 29 Good OSEMs, of which 1 is questionable
(089) with PD voltage of 1.5V, 5 need some
work (pigtailing, replace/remove/add screws). |
|
|
15922
|
Tue Mar 16 14:37:36 2021 |
Yehonathan | Update | BHD | SOS SmCo magnets Inspection | In the cleanroom, I opened the nickel-plated
SmCo magnet box to take a closer look. I
handled the magnets with tweezers. I wrapped |
|
|
15931
|
Wed Mar 17 14:40:39 2021 |
Yehonathan | Update | BHD | SOS SmCo magnets Inspection | Continuing with envelope number 2
Magnet |
|
|
15962
|
Thu Mar 25 12:11:53 2021 |
Yehonathan | Update | CDS | c1auxey assembly | I finished prewiring the new c1auxey Acromag
chassis (see attached pictures). I connected
all grounds to the DIN rail to save some |
|
|
15964
|
Thu Mar 25 14:58:16 2021 |
Yehonathan | Update | BHD | SOS SmCo magnets Inspection | Redoing magnet measurement of envelope
1:
|
|
|
15969
|
Fri Mar 26 10:25:37 2021 |
Yehonathan | Update | BHD | SOS assembly | I measure some of the dowel pins we got
from Mcmaster with a caliper.
One small pin is 0.093" in |
|
|
15978
|
Tue Mar 30 17:27:04 2021 |
Yehonathan | Update | CDS | c1auxey assembly | {Yehonathan, Jon}
We poked (looked
in situ with a flashlight, not disturbing |
|
|
15999
|
Tue Apr 6 15:42:57 2021 |
Yehonathan | Update | BHD | SOS assembly | We got some dumbells from Re-Source Manufacturing
(see attached). I picked 3 in random and
measured their dimensions: |
|
|
16011
|
Fri Apr 9 20:54:54 2021 |
Yehonathan | Update | BHD | SOS assembly | Today I assembled the skeleton of 6 towers,
without clamps and sensor assembly (attachment
1). |
|
|
16018
|
Mon Apr 12 17:30:11 2021 |
Yehonathan | Update | BHD | SOS assembly | Today, I screwed the plungers on the sensor
plates and installed them on the Towers.
I also installed the wire clamps on the suspension |
|
|
16019
|
Mon Apr 12 18:34:26 2021 |
Yehonathan | Summary | PSL | PMC unlocked at 2pm on Sunday; ~ Restored | PMC lost lock again at around 16:00 April
12. I was able to lock it again but the transmission
is only 0.6 now and REFL is 0.14. |
|
|
16024
|
Tue Apr 13 20:45:16 2021 |
Yehonathan | Update | PSL | Laser amplifier | {Yehonathan, Rana}
We unpacked the content of the
amplifier crate in front of the water fountain |
|
|
16034
|
Thu Apr 15 09:46:24 2021 |
Yehonathan | Update | PSL | Laser amplifier | Some more relevant documents provided by
Matt:
Phase |
|
|
16040
|
Fri Apr 16 10:58:16 2021 |
Yehonathan | Update | General | Glue Freezer completely frozen | {Paco, Anchal, Yehonathan}
We emptied the fridge and moved
the amplifier equipment on top of the amplifier |
|
|
16044
|
Fri Apr 16 18:21:36 2021 |
Yehonathan | Update | PSL | Laser amplifier | I surveyed a bit the 1X1/2 area to plan
for the installation of the laser amplifier.
There is a vacancy at the bottom |
|
|
16045
|
Fri Apr 16 19:07:31 2021 |
Yehonathan | Update | General | Glue Freezer completely frozen | There is still a huge chunk of unmelted
ice in the fridge. I moved the content of
that fridge in the main fridge and put "do |
|
|
16048
|
Mon Apr 19 10:52:27 2021 |
Yehonathan | Update | General | Glue Freezer completely frozen | {Anchal, Paco, Yehonathan}
We took the glue fridge outside. |
|
|
16051
|
Mon Apr 19 19:40:54 2021 |
Yehonathan | Update | General | Glue Freezer completely frozen | {Paco, Yehonathan}
We broke the last chunk of ice
and cleaned the fridge. We move the fridge |
|
|
16052
|
Mon Apr 19 21:54:55 2021 |
Yehonathan | Update | CDS | Updated c1auxey wiring plan | Except for the feed-throughs that require
a DB9-M connector I finished wiring and labeling
the Acromag, following Jon's updated |
|
|
16080
|
Thu Apr 22 17:28:34 2021 |
Yehonathan | Update | PSL | Laser amplifier | According to the aLIGO
70W amplifier interlock concept the flow
rate of the chiller should be between 5 and |
|
|
16098
|
Thu Apr 29 16:35:51 2021 |
Yehonathan | Update | CDS | Updated c1auxey wiring plan | I installed the EPICs base, asyn and modbus
modules according to Jon's
instructions. |
|
|
16103
|
Thu Apr 29 19:55:45 2021 |
Yehonathan | Update | CDS | Updated c1auxey wiring plan | We received a stock of DB9 male feed-through
connectors. That allowed me to complete the
remaining wiring on the c1auxey Acromag chassis. |
|
|
16111
|
Mon May 3 16:49:04 2021 |
Yehonathan | Update | BHD | SOS assembly | I found a "vice" in the cleanroom
(attachment 1). I used it to push dowel pins
into the last suspension block using some |
|
|
16119
|
Tue May 4 19:14:43 2021 |
Yehonathan | Update | General | OSEMs from KAGRA | I put the box containing the untested OSEMs
from KAGRA near the south flow bench on the
floor. |
|
|
16170
|
Tue Jun 1 16:17:06 2021 |
Yehonathan | Update | BHD | SOS assembly | I tried to push the clean Viton tips into
the vented screws just to find out that the
vented holes are too small. We need to drill |
|
|
16178
|
Thu Jun 3 17:15:17 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | As Jon wrote we need to use the NPN configuration
(see attachments). I tested the isolator
channels in the following way: |
|
|
16182
|
Fri Jun 4 14:49:23 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | I made a diagram (Attached). I think it
explains the blue thing in the previous post.
I don't know what is the grounding |
|
|
16187
|
Sun Jun 6 15:59:51 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | According to the BO interface circuit board
https://dcc.ligo.org/D1001266,
PCIN wires are connected to the coil driver |
|
|
16189
|
Mon Jun 7 13:14:20 2021 |
Yehonathan | Update | CDS | BI channels on c1auxey | I added a new XT1111 Acromag module to
the c1auxey chassis. I sanitized and configured
it according to the slow |
|
|
16193
|
Tue Jun 8 11:54:39 2021 |
Yehonathan | Update | CDS | BI channels on c1auxey | I tested the digital inputs the following
way: I connected a DB9 breakout to DB9M-5
and DB9M-6 where digital inputs are hosted. |
|
|
16199
|
Mon Jun 14 15:31:30 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | I checked the BI situation on the HAM-A
coil driver. It seems like these are
sinking BIs and indeed need to be isolated |
|
|
16205
|
Wed Jun 16 17:24:29 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | I updated the wiring diagram according
to Koji's suggestion. According to the |
|
|
16207
|
Wed Jun 16 20:32:39 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | I installed 2 additional isolators in the
Acromag chassis. I set all the input channels
to PNP. I ran the digital inputs (EnableMon |
|
|
16215
|
Fri Jun 18 19:02:00 2021 |
Yehonathan | Update | BHD | SOS assembly | Today I glued some magnets to dumbells.
First, I took 6 magnets (the maximum
I can glue in one go) and divided them into |
|