| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14855
|
Fri Aug 23 18:46:17 2019 |
Jon | Update | CDS | c1iscaux remaining work | I added the list of new c1iscaux channels
to /opt/rtcds/caltech/c1/chans/daq/C0EDCU.ini |
|
|
14856
|
Fri Aug 23 19:10:02 2019 |
Jon | Update | Cameras | GigE camera server is online | Following the death of rossa, which was
hosting the only working environment for
the |
|
|
15093
|
Wed Dec 11 15:01:57 2019 |
Jon | Summary | PSL | PMC cavity ringdown measurement | [Jon, Yehonathan]
We carried out a set of cavity
ringdown measurements of the PMC. The 1/e |
|
|
15111
|
Mon Jan 6 15:36:55 2020 |
Jon | Update | PSL | Assembly underway for c1psl upgrade | [Jon, Yehonathan]
We've begun assembling the
new c1psl Acromag chassis based on Yehonathan's |
|
|
15114
|
Tue Jan 7 18:51:51 2020 |
Jon | Update | PSL | New c1psl server assembled | I've assembled a new SuperMicro rackmount
machine to replace c1psl. It is currently
set up on the electronics bench. |
|
|
15125
|
Wed Jan 15 14:10:28 2020 |
Jon | Configuration | PSL | New EPICS database for C1PSL + C1IOO | Summary
I have completed the
new EPICS channel database for the c1psl
and c1ioo channels |
|
|
15140
|
Wed Jan 22 16:19:47 2020 |
Jon | Update | VAC | TP3 controller errors | Gautam and I debugged a communications
problem with TP3 that was causing its python
service to fail. We traced the problem back |
|
|
15150
|
Thu Jan 23 23:07:04 2020 |
Jon | Configuration | PSL | c1psl breakout board wiring | To facilitate wiring the c1psl chassis
and scripting loopback tests, I've
compiled a distilled spreadsheet with the |
|
|
15151
|
Fri Jan 24 13:56:21 2020 |
Jon | Update | BHD | BHD optics specifications | I've started a spreadsheet for the
BHD optics specifications and populated it
with my best initial guesses. There are a |
|
|
15168
|
Tue Jan 28 19:12:30 2020 |
Jon | Configuration | PSL | Spare channels added to c1psl chassis | After some discussion with Gautam, I decided
to build more spare channels into the new
c1psl machine. This is anticipation of adding |
|
|
15176
|
Thu Jan 30 12:52:10 2020 |
Jon | Update | BHD | Metal OMCs procured | Last night Yehonathan and I located the
two steel PMCs in the QIL, with help from
Anchal. They are currently sitting on my |
|
|
15178
|
Thu Jan 30 17:31:28 2020 |
Jon | Update | PSL | Errant FSS_INOFFSET change | A script I was testing errantly set C1:PSL-FSS_INOFFSET
=> 10 V at about 5:30 pm. I manually reverted
the channel value to 0, but I don't know |
|
|
15184
|
Mon Feb 3 15:22:39 2020 |
Jon | Update | PSL | c1psl progress/Acromag ADC grounding | I tested the c1psl AO channels on the electronics
bench on Friday. While I found all the wiring
to be correct, some of the channels exhibited |
|
|
15194
|
Thu Feb 6 21:54:13 2020 |
Jon | Update | PSL | c1psl bench testing complete | Today I engineered the last piece
of the new c1psl system: the multi-bit
binary output (mbbo) channels that control |
|
|
15226
|
Wed Feb 26 21:43:48 2020 |
Jon | Summary | BHD | Projected IFO noise budget, post-BHD upgrade | To supplement the material presented during
the BHD review, I've put together a projected
noise budget for the 40m. Note these are |
|
|
15241
|
Mon Mar 2 23:49:03 2020 |
Jon | Summary | BHD | Projected IFO noise budget, post-BHD upgrade | Updated noise budget curves, now computed
using the latest version of pygwinc. This
resolves the inconsistency between the gwinc |
|
|
15244
|
Tue Mar 3 18:11:05 2020 |
Jon | Summary | BHD | Projected IFO noise budget, post-BHD upgrade | Revised noise estimates, correcting a couple
of factor of 2 and factor of pi errors found
in the coil driver noise calculation. Also |
|
|
15253
|
Wed Mar 4 22:38:31 2020 |
Jon | Update | PSL | c1psl communications problem resolved | I investigated the problem
reported earlier today with the BIO1 channels.
By logging the systemd messages generated |
|
|
15256
|
Thu Mar 5 19:45:23 2020 |
Jon | Summary | PSL | C1PSL in-situ test results | We've completed
almost all of the in-situ testing of the
c1psl channels. During this |
|
|
15276
|
Fri Mar 13 20:00:50 2020 |
Jon | Update | Computers | Loopback monitoring for slow machines | Summary
Today
I finished implementing loopback monitors
of the up/down state of the slow controls |
|
|
15284
|
Thu Mar 26 17:41:18 2020 |
Jon | Omnistructure | BHD | BHD docs compilation | Since there has been a proliferation of
BHD Google docs recently, I've linked
them all from the BHD |
|
|
15292
|
Thu Apr 2 16:31:33 2020 |
Jon | Update | CDS | C1AUXEY wiring + channel list |
Quote:
|
|
|
15294
|
Fri Apr 3 12:09:53 2020 |
Jon | Update | CDS | C1AUXEY wiring + channel list |
Quote:
|
|
|
15295
|
Fri Apr 3 13:40:07 2020 |
Jon | Update | BHD | BHD front-end complication | I wanted to pass along a complication pointed
out by K. Thorne re: our plan to use Gen1
(old) Dolphin IPC cards in the new real-time |
|
|
15299
|
Tue Apr 7 10:56:39 2020 |
Jon | Update | BHD | BHD front-end complication |
Quote:
|
|
|
15300
|
Tue Apr 7 15:30:40 2020 |
Jon | Summary | NoiseBudget | 40m noise budget migrated to pygwinc | In the past year, pygwinc has expanded
to support not just fundamental noise calculations (e.g.,
quantum, thermal) but also any number of |
|
|
15305
|
Thu Apr 16 21:13:20 2020 |
Jon | Update | BHD | BHD optics specifications | Summary
I've generated
specifications for the new BHD optics. This
includes the suspended relay mirrors as |
|
|
15311
|
Thu Apr 23 09:52:02 2020 |
Jon | Update | Cameras | GigE w better NIR sensitivvity | Nice, and we should also permanently install
the camera server (c1cam)
which is still sitting on the electronics |
|
|
15334
|
Fri May 15 09:18:04 2020 |
Jon | Update | BHD | BHD telescope designs accounting for ASC | Hang and I have reanalyzed the BHD telescope
designs, with the goal of identifying
sufficiently non-degenerate locations for |
|
|
15379
|
Sat Jun 6 14:07:30 2020 |
Jon | Update | BHD | Stock-Part Mode-Matching Telescope Option | Summary
For the initial phase of
BHD testing, we recently discussed whether
the mode-matching telescopes could be built |
|
|
15382
|
Mon Jun 8 17:40:22 2020 |
Jon | Update | BHD | Astigmatism and scattering plots | MM_total = (MM_vert + MM_horiz) / 2.
The large astigmatic MM loss in
the LO case is mainly due to the strong LO4 |
|
|
15384
|
Mon Jun 8 21:45:47 2020 |
Jon | Update | BHD | Astigmatism and scattering plots | Hmm? T1300364
suggests MM_total = Sqrt(MM_Vert * MM_Horiz) |
|
|
15386
|
Tue Jun 9 14:55:43 2020 |
Jon | Update | BHD | MM telescope actuation range requirments | I don't think we ever discussed why
the angular RMS of the ETMs is so much higher
than the ITMs. Maybe that's a separate |
|
|
15389
|
Thu Jun 11 09:37:38 2020 |
Jon | Update | BHD | Conclusions on Mode-Matching Telescopes | After further astigmatism/tolerance analysis
[ELOG
15380, 15387] |
|
|
15402
|
Tue Jun 16 13:35:03 2020 |
Jon | Update | VAC | Temporary vac fix / IFO usable again | [Jon, Jordan, Koji]
Today Jordan reconfigured the vac
system to allow pumping of the main volume |
|
|
15406
|
Thu Jun 18 11:00:24 2020 |
Jon | Update | VAC | Questions/comments on vacuum |
Quote:
|
|
|
15408
|
Thu Jun 18 14:13:03 2020 |
Jon | Update | VAC | Questions/comments on vacuum | I agree there
were MEDM fields, but I can't find any |
|
|
15412
|
Thu Jun 18 22:33:57 2020 |
Jon | Omnistructure | VAC | Vac hardware purchase list | Replacement Hardware Purchase List
I've
created a purchase
list of hardware needed to restore the aging |
|
|
15413
|
Fri Jun 19 07:40:49 2020 |
Jon | Update | VAC | Questions/comments on vacuum | I think we should discuss interlock possibilities at
a 40m meeting. I'm reluctant to make
the system more complicated, but perhaps |
|
|
15421
|
Mon Jun 22 10:43:25 2020 |
Jon | Configuration | VAC | Vac maintenance at 11 am | The vac system is going down at 11 am today
for planned maintenance:
Re-install the repaired |
|
|
15424
|
Mon Jun 22 20:06:06 2020 |
Jon | Configuration | VAC | Vac maintenance complete | This work is finally complete. The dry
pump replacement was finished quickly but
the controls updates required some substantial |
|
|
15446
|
Wed Jul 1 18:03:04 2020 |
Jon | Configuration | VAC | UPS replacements | I looked into how the new UPS devices
suggested by Chub would communicate with
the vac interlocks. There are several possible |
|
|
15456
|
Mon Jul 6 15:10:40 2020 |
Jon | Summary | BHD | 40m --> A+ BHD design analysis | As suggested last week, Hang and I have
reviewed the A+ BHD status
(DRD, CDD, and reviewers' comments) and |
|
|
15462
|
Thu Jul 9 16:02:33 2020 |
Jon | HowTo | CDS | Procedure for setting up BHD front-ends | Here is the procedure for setting up the
three new BHD front-ends (c1bhd, c1sus2,
c1ioo - replacement). This plan is based |
|
|
15465
|
Thu Jul 9 18:00:35 2020 |
Jon | Configuration | VAC | UPS replacements | Chub has placed the order for two new UPS
units (115V for TP2/3 and a 220V version
for TP1). |
|
|
15499
|
Thu Jul 23 15:58:24 2020 |
Jon | Summary | VAC | Vacuum controls refurbishment plan | This year we've struggled with vacuum
controls unreliability (e.g., spurious interlock
triggers) caused by decaying hardware. Here |
|
|
15501
|
Mon Jul 27 15:48:36 2020 |
Jon | Summary | VAC | Vacuum parts ordered | To carry out the next steps of the vac
refurbishment plan [ELOG
15499], I've ordered parts necessary |
|
|
15502
|
Tue Jul 28 12:22:40 2020 |
Jon | Update | VAC | Vac interlock test today 1:30 pm | This afternoon Jordan is going to carry
out a test of the V4 and V5 hardware
interlocks. To inform the interlock improvement |
|
|
15504
|
Tue Jul 28 14:11:14 2020 |
Jon | Update | VAC | Vac interlock test today 1:30 pm | This test has been completed. The IFO configuration
has been reverted to nominal.
For future reference: yes, |
|
|
15525
|
Fri Aug 14 10:03:37 2020 |
Jon | Update | CDS | Timing distribution slot availability | That's great news we
won't have to worry about a new timing
fanout for the two new machines, c1bhd and |
|