| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14183
|
Fri Aug 24 10:51:23 2018 |
Steve | Update | VAC | pumpdown 81 at day 38 |
|
|
|
14182
|
Fri Aug 24 08:04:37 2018 |
Steve | Update | General | small earth quake |
|
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14181
|
Thu Aug 23 16:10:13 2018 |
not Koji | Update | IMC | MC/PMC trouble | Great, thanks!
|
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|
14180
|
Thu Aug 23 16:05:24 2018 |
Koji | Update | IMC | MC/PMC trouble | I don't know what had been wrong, but
I could lock the PMC as usual.
The IMC got relocked by AutoLocker. |
|
|
14179
|
Thu Aug 23 15:26:54 2018 |
Jon | Update | IMC | MC/PMC trouble | I tried unsuccessfully to relock the MC
this afternoon.
I came in to find it in a trouble |
|
|
14178
|
Thu Aug 23 08:24:38 2018 |
Steve | Update | SUS | ETMX trip follow-up | Glitch, small amplitude, 350 counts
& no trip.
|
|
|
14177
|
Wed Aug 22 12:22:27 2018 |
rana | Summary | Electronics | Inspection of the possible dual backplane interfaces for Acromag DAQ | I think we don't need to keep Crystal
Ref: we can change this into a regular Wenzel
box with no outside control or monitoring. |
|
|
14176
|
Wed Aug 22 08:44:09 2018 |
Steve | Update | General | earth quake | 6.2M Bandon, OR did not trip any sus
|
|
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14175
|
Wed Aug 22 00:22:05 2018 |
Koji | Summary | Electronics | Inspection of the possible dual backplane interfaces for Acromag DAQ | [Johannes, Koji]
We went around the LSC, PSL, IOO,
and SUS racks to check how many dual backplane |
|
|
14174
|
Tue Aug 21 17:32:51 2018 |
awade | Bureaucracy | Equipment loan | One P-810.10 Piezo Actuators element removed | I've taken a PI Piezo Actuator
(P-810.10)
from the 40m collection. I forgot to note |
|
|
14173
|
Tue Aug 21 09:16:23 2018 |
Steve | Update | Wiki | AP table layout 20180821 |
|
|
|
14172
|
Tue Aug 21 03:09:59 2018 |
johannes | Omnistructure | DAQ | Panels for Acromag DAQ chassis | I expanded the previous panels to 6U height
for the new DAQ chassis we're buying
for the upgrade. I figure it's best if |
|
|
14171
|
Mon Aug 20 15:16:39 2018 |
Jon | Update | CDS | Rebooted c1lsc, slow machines | When I came in this morning no light was
reaching the MC. One fast machine was
dead, c1lsc, and a number of the slow machines: |
|
|
14170
|
Mon Aug 20 14:04:53 2018 |
johannes | Bureaucracy | Equipment loan | Two C30642G PDs removed | EDIT: After discussing with Koji
and checking the existing M2ISS PDs I put
the two C30642G back and took two C30665GH |
|
|
14169
|
Thu Aug 16 23:06:50 2018 |
gautam | Update | SUS | Another low noise bias path idea | I had a very fruitful discussion with Rich
about this circuit today. He agreed
with the overall architecture, but made the |
|
|
14168
|
Thu Aug 16 14:48:14 2018 |
Steve | Update | VAC | why do we need a root pump? |
Basic Pump Throughput Concepts
What
is Pump Throughput?
The manufacturer |
6x |
|
14167
|
Thu Aug 16 07:50:28 2018 |
Steve | Update | VAC | pumpdown 81 at day 30 |
|
|
|
14166
|
Wed Aug 15 21:27:47 2018 |
gautam | Update | CDS | CDS status update | Starting c1cal
now, let's see if the other c1lsc FE
models are affected at all... Moreover, since |
|
|
14165
|
Wed Aug 15 19:18:07 2018 |
gautam | Update | SUS | Another low noise bias path idea | I took another pass at this. Here is what
I have now:
Attachment |
|
|
14164
|
Wed Aug 15 12:15:24 2018 |
gautam | Update | COC | Macroscopic SRC length for SR tuning | Summary:
It |
|
|
14163
|
Tue Aug 14 23:14:24 2018 |
aaron | Update | OMC | OMC scanning/aligning script | I made a script to scan the OMC length
at each setpoint for the two TTs steering
into the OMC. It is currently located on |
|
|
14162
|
Tue Aug 14 02:01:12 2018 |
gautam | Update | LSC | DRMI locking - partial success | After tweaking the AS55 demod phase, SRM
alignment, triggering settings, I got a few
brief |
|
|
14161
|
Tue Aug 14 00:50:32 2018 |
gautam | Update | ASS | X arm ASS still not quite right? | While working on the single arm alignment,
I noticed that today, i was able to get the
X arm transmission back to ~1.22, and the |
|
|
14160
|
Tue Aug 14 00:27:55 2018 |
gautam | Update | LSC | Locking prep | In preparation for attempting some DRMI
locking, I did the following:
Slow machine reboots for |
|
|
14159
|
Mon Aug 13 20:21:10 2018 |
aaron | Update | OMC | New DAC for the OMC | [aaron, gautam]
We finished up making the new c1omc
model (screenshot attached). |
|
|
14158
|
Mon Aug 13 17:20:07 2018 |
aaron | Configuration | Upgrade | Parts list for BHD | I've attached the diagram of what I
mean.
There are a couple caveats and |
|
|
14157
|
Mon Aug 13 11:44:32 2018 |
gautam | Update | Computer Scripts / Programs | Patch updates on nodus | Larry W said that some security issues
were flagged on nodus. So I ran
|
|
|
14156
|
Mon Aug 13 09:56:23 2018 |
Steve | Update | SUS | ETMX trip follow-up | Here is an other big one
|
|
|
14155
|
Sun Aug 12 10:59:34 2018 |
aaron | Configuration | Upgrade | Parts list for BHD | That seems fine, I wasn't thinking
of that beam. in that case could we just
have a PBS directly behind MMT2 and send |
|
|
14154
|
Fri Aug 10 16:43:50 2018 |
gautam | Configuration | Upgrade | Parts list for BHD | Can we use the leakage
beam from MMT2 on the OMC table as the
LO beam? I can't find the spec for this |
|
|
14153
|
Fri Aug 10 11:29:39 2018 |
aaron | Configuration | Upgrade | Parts list for BHD | I've started putting together a list
of things we'll need to buy to do BHD
readout. I'm still messing around with |
|
|
14152
|
Fri Aug 10 01:10:56 2018 |
gautam | Update | LSC | Some vertex locking restored | For
the first time after the whirlwind vent, |
|
|
14151
|
Thu Aug 9 22:50:13 2018 |
gautam | Update | CDS | AlignSoft script modified | After this
work of increasing the series resistance
on ETMX, there have been numerous occassions |
|
|
14150
|
Thu Aug 9 12:40:14 2018 |
gautam | Update | SUS | ETMX trip follow-up | A brief follow-up on this since we discussed
this at the meeting yesterday: the attached
DV screenshot shows the full 2k data for |
|
|
14149
|
Thu Aug 9 12:31:13 2018 |
gautam | Update | CDS | CDS status update | The model seems to have run without issues
overnight. Not completely related, but the
MC1 shadow sensor signals also don't |
|
|
14148
|
Thu Aug 9 02:12:13 2018 |
gautam | Update | COC | South East or West? | Summary:
For operating the SRC in the "Signal-Recycled"
tuning, the SRC macroscopic length needs |
|
|
14147
|
Wed Aug 8 23:06:59 2018 |
gautam | Update | SUS | Another low noise bias path idea | Today while Rich Abbott was here, Koji
and I had a brief discussion with him about
the HV amplifier idea for the coil driver |
|
|
14146
|
Wed Aug 8 23:03:42 2018 |
gautam | Update | CDS | c1lsc model started | As part of this slow but systematic debugging,
I am turning on the c1lsc model overnight
to see if the model crashes return. |
|
|
14145
|
Wed Aug 8 20:56:11 2018 |
Koji | Update | PSL | EOM measuement preparation | Rich and I worked on the EOM measurement.
After the measurement, the setup was reverted
to the nominal state |
|
|
14144
|
Tue Aug 7 23:06:30 2018 |
Koji | Update | PSL | EOM measuement preparation | I was preparing for the aLIGO EOM measuement
to be carried out tomorrow afternoon.
I did a few modifications to the |
|
|
14143
|
Tue Aug 7 22:28:23 2018 |
gautam | Update | CDS | More CDS woes | I am starting the c1x04 model (IOP) on
c1lsc to see how it behaves overnight.
Well, there was apparently an immediate |
|
|
14142
|
Tue Aug 7 11:30:46 2018 |
gautam | Update | CDS | More CDS woes | Overnight, all models on c1sus and c1ioo
seem to have had no stability issues, supporting
the hypothesis that timing issues stem from |
|
|
14141
|
Mon Aug 6 20:41:10 2018 |
aaron | Update | DAQ | New DAC for the OMC | Gautam and I tested out the DAC that he
installed in the latter half of last week.
We confirmed that at least one of the channels |
|
|
14140
|
Mon Aug 6 19:49:09 2018 |
gautam | Update | CDS | More CDS woes | I've left
the c1lsc frontend shutdown for now, |
|
|
14139
|
Mon Aug 6 14:38:38 2018 |
gautam | Update | CDS | More CDS woes | Stability was short-lived it seems. When
I came in this morning, all models on c1lsc
were dead already, and now c1sus is also |
|
|
14138
|
Mon Aug 6 09:42:10 2018 |
Koji | Summary | Computers | Transition of the main NFS disk on chiara | Follow up:
- At least it was confirmed that
the local backup (4TB->2TB) is regularly |
|
|
14137
|
Mon Aug 6 09:34:02 2018 |
Steve | Update | VAC | RGA scan at day 20 |
|
|
|
14136
|
Mon Aug 6 00:26:21 2018 |
gautam | Update | CDS | More CDS woes | I spent most of today fighting various
CDS errors.
I rebooted c1lsc around |
|
|
14135
|
Sun Aug 5 15:43:50 2018 |
gautam | Update | SUS | Another low noise bias path idea | OK, how about this:
Attachment |
|
|
14134
|
Sun Aug 5 13:45:00 2018 |
gautam | Update | SUS | ETMX tripped | Independent from the problems the vertex
machine has been having (I think, unless
it's something happening over the shared |
|