| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
15526
|
Fri Aug 14 10:10:56 2020 |
Jon | Configuration | VAC | Vacuum repairs today | The vac system is going down now for planned
repairs [ELOG
15499]. It will likely take most |
|
|
15527
|
Sat Aug 15 02:02:13 2020 |
Jon | Configuration | VAC | Vacuum repairs today | Vacuum work is completed. The TP2 and TP3
interlocks have been overhauled as proposed
in ELOG |
|
|
15528
|
Sat Aug 15 15:12:22 2020 |
Jon | Configuration | VAC | Overhaul of small turbo pump interlocks | Summary
Yesterday I completed
the switchover of small turbo pump interlocks
as proposed in ELOG |
|
|
15537
|
Mon Aug 24 08:13:56 2020 |
Jon | Update | VAC | UPS installation | I'm in the lab this morning to interface
the two new UPS units with the digital controls
system. Will be out by lunchtime. The disruptions |
|
|
15538
|
Mon Aug 24 11:25:07 2020 |
Jon | Update | VAC | UPS installation | I'm leaving the lab shortly. We're
not ready to switch over the vac equipment
to the new UPS units yet. |
|
|
15556
|
Fri Sep 4 15:26:55 2020 |
Jon | Update | VAC | Vac system UPS installation | The vac controls are going down now to
pull and test software changes. Will advise
when the work is completed. |
|
|
15557
|
Fri Sep 4 21:12:51 2020 |
Jon | Update | VAC | Vac system UPS installation | The vac work is completed. All of the vacuum
equipment is now running on the new 120V
UPS, except for TP1. The 230V TP1 is still |
|
|
15558
|
Sat Sep 5 12:01:10 2020 |
Jon | Update | VAC | Vac system UPS installation | Summary
Yesterday's UPS
switchover was mostly a success. The new
Tripp |
|
|
15560
|
Sun Sep 6 13:15:44 2020 |
Jon | Update | DAQ | UPS for framebuilder | Now that the old APC
Smart-UPS 2200 is no longer in use by
the vacuum system, I looked into whether |
|
|
15561
|
Sun Sep 6 14:17:18 2020 |
Jon | Update | Equipment loan | Zurich Instruments analyzer | On Friday, I grabbed the Zurich Instruments
HF2LI lock-in amplifier and brought
it home. As time permits, I will work towards |
|
|
15567
|
Thu Sep 10 15:43:22 2020 |
Jon | Update | BHD | Input noise spectra for A+ BHD modeling | As promised some time ago, I've
obtained input noise spectra from the sites calibrated
to physical units. They are located in a |
|
|
15577
|
Wed Sep 16 12:03:07 2020 |
Jon | Update | VAC | Replacing pressure gauges | Assembled is the list of dead pressure
gauges. Their locations are also circled
in Attachment 1. |
|
|
15692
|
Wed Dec 2 12:27:49 2020 |
Jon | Update | VAC | Replacing pressure gauges | Now that the new Agilent full-range gauges
(FRGs) have been received, I'm putting
together an installation plan. Since |
|
|
15703
|
Thu Dec 3 14:53:58 2020 |
Jon | Update | VAC | Replacing pressure gauges | Update to the gauge replacement plan (15692),
based on Jordan's walk-through today. |
|
|
15724
|
Thu Dec 10 13:05:52 2020 |
Jon | Update | VAC | UPS failure | I've investigated the vacuum controls
failure that occurred last night. Here's
what I believe happened. |
|
|
15729
|
Thu Dec 10 17:12:43 2020 |
Jon | Update | | New SMA cables on order | As requested, I placed an order for an
assortment of new RF cables: SMA male-male,
RG405. |
|
|
15738
|
Fri Dec 18 22:59:12 2020 |
Jon | Configuration | CDS | Updated CDS upgrade plan | Attached is the layout for the "intermediate"
CDS upgrade option, as was discussed on Wednesday.
Under this plan: |
|
|
15739
|
Sat Dec 19 00:25:20 2020 |
Jon | Update | | New SMA cables on order | I re-ordered the below cables, this
time going with flexible, double-shielded
RG316-DS. |
|
|
15764
|
Thu Jan 14 12:19:43 2021 |
Jon | Update | CDS | Expansion chassis from LHO | That's fine, we didn't actually
request those. We bought and already have
in hand new PCIe x4 cables for the chassis-host |
|
|
15766
|
Fri Jan 15 15:06:42 2021 |
Jon | Update | CDS | Expansion chassis from LHO | Koji asked me assemble a detailed breakdown
of the parts received from LHO, which I do
based on the high-res photos |
|
|
15770
|
Tue Jan 19 13:19:24 2021 |
Jon | Update | CDS | Expansion chassis from LHO | Indeed T1800302 is
the document I was alluding to, but I completely
missed the statement about >3 GHz speed. |
|
|
15771
|
Tue Jan 19 14:05:25 2021 |
Jon | Configuration | CDS | Updated CDS upgrade plan | I've produced updated diagrams of the
CDS layout, taking the comments in 15476 into |
|
|
15842
|
Wed Feb 24 22:13:47 2021 |
Jon | Update | CDS | Planning document for front-end testing | I've started writing up a rough testing
sequence for getting the three new front-ends
operational (c1bhd, c1sus2, c1ioo). Since |
|
|
15872
|
Fri Mar 5 17:48:25 2021 |
Jon | Update | CDS | Front-end testing | Today I moved the c1bhd machine from the
control room to a new test area set up behind
(west of) the 1X6 rack. The test stand is |
|
|
15890
|
Tue Mar 9 16:52:47 2021 |
Jon | Update | CDS | Front-end testing | Today I continued with assembly and testing
of the new front-ends. The main progress
is that the IO chassis is now communicating |
|
|
15924
|
Tue Mar 16 16:27:22 2021 |
Jon | Update | CDS | Front-end testing | Some progress today towards setting up
an isolated subnet for testing the new front-ends.
I was able to recover the fb1 backup disk |
|
|
15947
|
Fri Mar 19 18:14:56 2021 |
Jon | Update | CDS | Front-end testing | Summary
Today I finished setting
up the subnet for new FE testing. There
are clones of both fb1 and chiara running |
|
|
15948
|
Fri Mar 19 19:15:13 2021 |
Jon | Update | CDS | c1auxey assembly | Today I helped Yehonathan get started with
assembly of the c1auxey (slow controls) Acromag
chassis. This will replace the final remaining |
|
|
15959
|
Wed Mar 24 19:02:21 2021 |
Jon | Update | CDS | Front-end testing | This evening I prepared a new 2 TB 3.5"
disk to hold a copy of /opt/rtcds and /opt/rtapps
from chiara. This is the final piece of setup |
|
|
15976
|
Mon Mar 29 17:55:50 2021 |
Jon | Update | CDS | Front-end testing | Cloning of chiara:/home/cvs underway
I
returned today with a beefier USB-SATA adapter,
which has an integrated 12 V supply |
|
|
15979
|
Tue Mar 30 18:21:34 2021 |
Jon | Update | CDS | Front-end testing | Progress today:
Outside Internet access for FE
test stand
This morning Jordan |
|
|
15997
|
Tue Apr 6 07:19:11 2021 |
Jon | Update | CDS | New SimPlant cymac | Yesterday Chris and I completed setup of
the Supermicro machine that will serve as
a dedicated host for developing and testing |
|