| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2246
|
Mon Oct 8 10:22:09 2018 |
awade | Summary | RF | Some notes on reflectionless RF filters for demodulation electronics | Edit Thu Oct 25 14:57:57 2018 (awade):
Note that the LISO models here have wrong
units. They are supposed to be in units |
|
|
2247
|
Mon Oct 8 15:10:17 2018 |
anchal | Summary | PD | Transimpedance and Dark Noise measurement of all RFPDs in PSL | tl;dr:
Transimpedance |
|
|
2248
|
Thu Oct 11 12:02:46 2018 |
anchal | Summary | PMC | South PMC servo card ready to use | I have mounted south PMC servo card on
a 1U chassis with two acromag cards.
The card should be ready to use. |
|
|
2249
|
Fri Oct 12 14:41:17 2018 |
awade | Summary | Environment | Temperature logging PSL lab (Sep-Oct 2018) | Temperature data in the ATF (QIL) lab has
been collected for a month now. Data
is sampled at 0.1 s intervals and saved |
|
|
2250
|
Fri Oct 19 17:05:10 2018 |
anchal | Summary | NoiseBudget | Summary of present noise budget | Attached is the latest full noise budget
we have. I generated it by rerunning current
noise |
|
|
2251
|
Tue Nov 6 13:41:04 2018 |
anchal | Summary | PMC | PMC installed on South Path | Changes:
The
PMC on the south path has been installed
with the PMC servo card on the rack. |
|
|
2253
|
Sun Nov 18 18:50:39 2018 |
anchal | Summary | South Cavity | South Path up and running again | The South PMC is installed and the South
FSS is running again. Attached is the beam
path profile from ala mode used for the south |
|
|
2263
|
Mon Dec 10 15:40:51 2018 |
anchal | Summary | TempCtrl | Prototype results for transimpedance circuit for Vacuum Can Temperature Sensor | I soldered a prototype board implementing
the transimpedance circuit I, Andrew and
Rana discussed earlier. |
|
|
2272
|
Fri Jan 4 16:42:28 2019 |
anchal | Summary | NoiseBudget | Latest noisebudget update. |
Since we are working on temperature
control of cavities, we worked out a hack
to still take beat note spectrum meanwhile.
|
|
|
2274
|
Fri Jan 4 19:17:00 2019 |
anchal | Summary | TempCtrl | Vacuum Can Temperature Sensors (AD590) transimpedance amplifier board test - RESULTS | Over the break, the test of Vacuum Can
Temperature Sensors transimpedance circuit
was running and fb4 has logged the values. |
|
|
2285
|
Thu Jan 17 11:55:12 2019 |
anchal | Summary | TempCtrl | Vacuum Can Temperature Sensors (AD590) transimpedance amplifier board noise test | I wanted to take a direct spectrum noise
measurement of the circuit. However, if I
have simply hooked the output of the circuit |
|
|
2304
|
Tue Feb 5 20:39:52 2019 |
anchal | Summary | FSS | Complete model of TTFSS box with TF and crossover analysis | I'm attaching the first results of
the transfer function from liso model
of complete TTFSS box. I've also attached |
|
|
2305
|
Wed Feb 6 19:13:06 2019 |
anchal | Summary | FSS | Complete model of TTFSS box with TF and crossover analysis | I added some more graphs to our FSS
analysis.
I modeled AD602 variable |
|
|
2306
|
Wed Feb 6 21:30:24 2019 |
awade | Summary | FSS | Complete model of TTFSS box with TF and crossover analysis | Hmm... Last estimate of V_rms applied to
EOM can't be true.
If laser frequency noise is |
|
|
2307
|
Thu Feb 7 10:33:27 2019 |
anchal | Summary | FSS | Complete model of TTFSS box with TF and crossover analysis |
Quote:
|
|
|
2309
|
Tue Mar 12 17:04:03 2019 |
anchal and awade | Summary | Computers | Migrating epics channels from acromag1 to c3iocserver |
The migration of all EPICS channel
hosting and all python programmes has been
done from Acromag1 to C3IOCServer. Now Acromag1 |
|
|
2310
|
Sun Mar 17 18:28:06 2019 |
awade and anchal | Summary | Computers | Migrating epics channels from acromag1 to c3iocserver: killing acromag1 services | Wandered into the PSL just now. Slow
controls were going wild. Traced it
back to the fact that acromag1 and its auto-restarting |
|
|
2312
|
Sat Mar 23 21:50:40 2019 |
anchal | Summary | Electronics Equipment | Power tripping incident and follow-up | This week on 19th March in the evening,
I was working on replacing the GND connections
of the power supply with thicker wires and |
|
|
2325
|
Wed Apr 17 10:40:54 2019 |
Koji | Summary | Equipment loan | Borrowing an IPA/Acetone glass bottoles CTN->OMC | I borrowed a small isopropanol glass bottle
from CTN to OMC (Apr 17, 2019)
I borrowed a small acetone glass |
|
|
2327
|
Thu Apr 25 20:24:27 2019 |
anchal | Summary | Electronics Equipment | Adjustable TTL Trigger Generator Box | Today I made a standalone Adjustable TTL
Trigger generator box. Following are some
features: |
|
|
2329
|
Sun Apr 28 22:29:18 2019 |
rana | Summary | Electronics Equipment | should I use an OpAmp as a Comparator? | not all amps are good for
use as a comparator |
|
|
2332
|
Tue Apr 30 18:55:06 2019 |
anchal | Summary | Electronics Equipment | Follow up on TTL Trigger generator box | But I used AD620 which is an instrumentation
amplifier, not opamp. I thought comparators
are made with differential amplifiers (from |
|
|
2336
|
Mon May 6 20:12:22 2019 |
Anjali | Summary | Equipment loan | Borrowed components | I borrowed the following components from
PSL lab to QIL lab
1. Mixer (Minicircuit, ZFM-3-S+) |
|
|
2339
|
Thu May 9 12:16:55 2019 |
anchal | Summary | FSS | Saving PDH error signal values | I have made a SMA cable of length 1.952m
after optimizing phase delay of LO. This
is giving the maximum PDH error signal. |
|
|
2340
|
Fri May 10 15:50:09 2019 |
anchal | Summary | Computers | modbus shifted to a git repo for version control | I today shifted our modbus (db files for
EPICS channels, ioc command files and docker-compose
file to run the services) over to this |
|
|
2341
|
Mon May 13 16:25:14 2019 |
anchal | Summary | Computers | Converted all PSL_Lab links to CTN links | We have changed the logbook name from PSL_Lab
to CTN. To keep all the links working, I
ran the attached script in a local copy of |
|
|
2342
|
Mon May 13 16:54:15 2019 |
awade | Summary | Computers | Converted all PSL_Lab links to CTN links | Awesome. Can you do the same for crosslinks
to the old ATF_lab logbook name (ATF_Lab->
QIL)? |
|
|
2354
|
Tue Jun 4 20:44:21 2019 |
rana | Summary | Other | next steps |
Fix the temperature control so
that the fluctuation over hours time scale
is low as Tara/Evan had it. This will allow |
|
|
2394
|
Mon Aug 19 15:54:51 2019 |
anchal | Summary | TempCtrl | Vac Can Heater Driver not working! | I had aligned the North Cavity before the
weekend and was about to align south one
today when I saw that the modematching on |
|
|
2396
|
Tue Aug 20 19:38:36 2019 |
anchal | Summary | Computers | Framebuilder re-configured | I updated ctn_scripts\channelFramebuilderConfigFileCreator.py to
work with the new format of modbus hosting
through docker (and cleaned it a bit). Also, |
|
|
2397
|
Wed Aug 21 10:28:58 2019 |
anchal | Summary | TempCtrl | Vacuum Can Step Response | Utilizing the fact that the heater stopped
last Friday, I fitted the day to extract
out a time constant for cooling down of the |
|
|
2403
|
Wed Aug 28 09:49:44 2019 |
anchal | Summary | scatter | Beam Dump Status | We need to switch out normal flat-faced
beam dumps with triangular cavity beam dumps
in all places where they are not present. |
|
|
2419
|
Fri Sep 6 11:51:17 2019 |
awade | Summary | TempCtrl | Summary of parameters and dimensions for thermal modeling | There's an error here. The factor of
2 should not be there. Correct equation would
be: |
|
|
2426
|
Fri Sep 13 16:46:54 2019 |
anchal | Summary | TempCtrl | Cavity heater resistances remeasured | Present understanding
CTN:2035
was the last measurement of cavity shield |
|
|
2428
|
Mon Sep 16 17:05:00 2019 |
anchal | Summary | BEAT | Beatnote Frequency stabalization | Over the weekend, I ran Relay Tuning method
for the PID of beatnote frequency control.
After CTN:2426 this |
|
|
2506
|
Mon Dec 30 10:33:33 2019 |
anchal | Summary | Other | Summary of questions asked in December | For the convenience of others, I'm
summarizing the open questions I asked on
elog in December. Comments on the posts, |
|
|
2592
|
Sat Oct 10 08:43:30 2020 |
anchal | Summary | Electronics Equipment | Red Pitaya and Moku characterization | I set up Red Pitaya, Wenzel Crystal, and
Moku at my apartment and took frequency noise
measurements of Red Pitaya and Wenzel Crystal |
|
|
2598
|
Thu Nov 26 11:26:14 2020 |
agupta | Summary | TempCtrl | Cavity temperature estimate | Measurement and estimation method:
125N-1064
Thermal continuous tuning coefficient is |
|
|
2602
|
Wed Dec 2 13:43:43 2020 |
anchal | Summary | Equipment loan | Transferred two gold box RFPDs to 40m | I transferred two Gold Box RFPDs labeled
SN002 and SN004 (both resonant at 14.75 MHz)
to 40m. I handed them to Gautam on Oct 22, |
|
|
2611
|
Fri Jan 28 15:18:27 2022 |
Anchal | Summary | Equipment loan | CTN raided by 40m tribes | [Anchal, Paco]
CTN was raided today afternoon
between 2 pm and 3 pm by 40m tribes. They |
|
|
8
|
Thu Nov 12 18:01:10 2009 |
Frank | Things to Buy | RefCav | heaters for the other two chambers | in order
to improve the stability of the chamber temperature
the current plan is to add a heater and insulation |
|
|
9
|
Thu Nov 12 20:56:38 2009 |
rana | Things to Buy | RefCav | heaters for the other two chambers | I think its important to think of a good
solution, since we may want to retrofit some
other chambers. |
|
|
10
|
Fri Nov 13 10:56:32 2009 |
Frank | Things to Buy | RefCav | heaters for the other two chambers |
|
|