| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
1589
|
Tue Oct 13 16:47:55 2015 |
Aidan, Antonio | Summary | Environment | PEM monitor computer is ready to run - needs license | We've set up the PEM monitor computer
to broadcast the temperature channels to
EPICS. |
|
|
1815
|
Mon Jan 23 14:18:31 2017 |
Aidan, Antonio | Summary | PEM | It's alive! Newport temperature sensors resurrected | The (Windows 7) computer that runs the
OPC server is in the TCS Lab. The EPICS server
on this machine needs rebooting at the moment. |
|
|
1537
|
Wed Dec 17 20:30:36 2014 |
Aidan, Evan | DailyProgress | | Minor changes to layout of cavity transmitted path |
|
|
|
1584
|
Tue Oct 6 09:27:25 2015 |
Aidan, Evan | Notes | NoiseBudget | iPython Noise Budget located in 40m SVN | /trunk/docs/algaas_ctn/sourceFiles/ |
|
|
1534
|
Mon Dec 15 20:43:49 2014 |
Aidan, Kate, Evan | DailyProgress | PMC | South Faraday isolator needs help |
|
|
|
1535
|
Tue Dec 16 14:06:35 2014 |
Aidan, Kate, Evan | Summary | Environment | Task list | Some tasks not included on the list:
Temperature loops
Cavities
|
|
|
1569
|
Tue Aug 11 16:49:55 2015 |
Aidan, Rich, Antonio | Summary | BEAT | Diagnosing the terrible beat signal. RCAV HV supply not showing current drawn | The beat signal looks awful. It has some
amplitude modulation at 6.75MHz and looks
like it has some strange saturation effects |
|
|
1570
|
Thu Aug 13 09:07:04 2015 |
Aidan, Rich, Antonio | Summary | BEAT | PLL locked on beat note - TTFSS boxes were being used incorrectly previously | We investigated the way we were locking
the PDH loops using the TTFSS boxes. Here's
what we previously did: |
|
|
16
|
Thu Nov 19 16:06:30 2009 |
Alberto | Computing | Computers | Elog debugging output - Down time programmed today to make changes | We want the elog process to run in verbose
mode so that we can see what's going. The
idea is to track the events that trigger |
|
|
17
|
Thu Nov 19 18:50:33 2009 |
Alberto | Computing | Computers | Elog debugging output - Down time programmed today to make changes |
|
|
|
2182
|
Thu May 10 18:18:06 2018 |
Anchal | DailyProgress | BEAT | Beam Profiling Beatnote detector | Today I took more measurements after reflecting
off the beam by 90 degrees to another direction
and using the Beam Profiler Dataray Beamr2-DD. |
|
|
2578
|
Sun May 31 11:44:20 2020 |
Anchal | DailyProgress | NoiseBudget | Bayesian Analysis Finalized | I've implemented all the proper analysis
norms that Jon suggested and are mentioned
in the previous |
|
|
2580
|
Thu Jun 4 09:18:04 2020 |
Anchal | DailyProgress | NoiseBudget | Bayesian Analysis Finalized | Better measurement captured today.
Final result of CTN experiment
as of June 4th 9 am:
|
|
|
2582
|
Thu Jun 11 14:02:26 2020 |
Anchal | DailyProgress | NoiseBudget | Bayesian Analysis Finalized | I realized that in my noise budget I was
using higher incident power on the cavities
which was the case earlier. I have made the |
|
|
2584
|
Mon Jun 15 16:43:58 2020 |
Anchal | DailyProgress | NoiseBudget | Better measurement on June 14th | Final result of CTN experiment
as of June 15th 5 pm:
|
|
|
2586
|
Tue Jun 23 17:28:36 2020 |
Anchal | DailyProgress | NoiseBudget | Better measurement on June 22nd (as I turned 26!) | Final result of CTN experiment
as of June 23 5 pm:
|
|
|
2587
|
Wed Jun 24 21:14:58 2020 |
Anchal | DailyProgress | NoiseBudget | Better measurement on June 24th | Final result of CTN experiment
as of June 24 9 pm:
|
|
|
2588
|
Fri Jun 26 12:38:34 2020 |
Anchal | DailyProgress | NoiseBudget | Bayesian Analysis Finalized, Adding Slope of Bulk Loss Angle as variable | I added the possibility of having a power-law
dependence of bulk loss angle on frequency.
This model of course matches better with |
|
|
2589
|
Tue Sep 15 15:13:44 2020 |
Anchal | Notes | Environment | HEPA filters switched on. Measurement stopped. | I have switched on HEPA filters to high,
both on top of the main table and on top
of the flow bench. |
|
|
2599
|
Mon Nov 30 10:28:08 2020 |
Anchal | Notes | Laser | North laser not switching on, power supply display not working | I shorted the interlock terminals on the
North laser power supply and still as soon
as I turn the key to 'ON' position, |
|
|
2607
|
Wed Jan 27 15:12:05 2021 |
Anchal | Notes | Environment | Small leak or drip in the lab on West End | I noticed small amount of water on the
floor (Attachment 1) on the west end of the
lab. Immediately above it is a pipe which |
|
|
2608
|
Thu Feb 11 18:01:39 2021 |
Anchal | DailyProgress | InstrumentCharacterization | SR560 Intermodulation Test | I added script SRIMD.py
in 40m/labutils/netgpibdata which allows
one to measure second order intermodulation |
|
|
2612
|
Mon Aug 22 20:18:21 2022 |
Anchal | Summary | NoiseBudget | Birefringence noise in thermo-optic noise | I followed the analysis of this recently
published paper Jan
Meyer et al 2022 Class. Quantum Grav. 39 |
|
|
2613
|
Tue Aug 23 19:56:21 2022 |
Anchal | Summary | NoiseBudget | Birefringence noise in thermo-optic noise | I made a few changes in my calculations
today, which changed the noise contribution
of this photoelastic noise (coatTPE) to roughly |
|
|
2615
|
Thu Aug 25 19:19:27 2022 |
Anchal | Summary | NoiseBudget | Looking at the measured and estimated photothermal transfer functions | The photothermal transfer function measurement
made back in 2014 showed some cancellation
of thermo-optic noise, but there were some |
|
|
2616
|
Thu Aug 25 19:38:01 2022 |
Anchal | Summary | NoiseBudget | Birefringence noise in thermo-optic noise |
|
|
|
2617
|
Fri Aug 26 15:56:38 2022 |
Anchal | Summary | NoiseBudget | Checking with Martin Fejer's calculations | Martin Fejer recently gave two talks in
a coatings workshop where he showed calculations
regarding the thermal photoelastic channel. |
|
|
2177
|
Tue Apr 24 14:37:39 2018 |
Anchal and Andrew | DailyProgress | BEAT | Beam Profiling Beatnote detector | Today, we did the beam profiling for the
beatnote detector just before the photodiode.
I have attached the data taken. The z values |
|
|
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+) |
|
|
1566
|
Thu Aug 6 23:49:10 2015 |
Antonio | Summary | FSS | power transmitted through the cavities and control signal | The light transmitted from both the
cavities has been monitored while the cavities
where locked (Vacav = 1.369 V, Vrcav = 5.7909 |
|
|
1567
|
Mon Aug 10 17:49:41 2015 |
Antonio | Summary | EOM | error-signal end EOM | On saturday a qualitative effect of
the modulation produced by the EOM located
in the PDH-north loop has been checked. |
|
|
1575
|
Thu Aug 20 13:55:22 2015 |
Antonio | Summary | FSS | OLTF Transfer functions of the North loop | In order
to have a better understanding of the FSS |
|
|
1578
|
Wed Sep 2 22:13:47 2015 |
Antonio | Summary | BEAT | PLL locking AGAIN | Description
As described in the elog entry
n. 1577 we were not able to lock the PLL |
|
|
1579
|
Sun Sep 13 10:40:29 2015 |
Antonio | DailyProgress | BEAT | PLL measured noise | Summary
|
|
|
1580
|
Sun Sep 13 11:31:04 2015 |
Antonio | DailyProgress | BEAT | PLL noise comparison at different PDH gain settings | Summary
|
|
|
1581
|
Sun Sep 13 12:44:14 2015 |
Antonio | DailyProgress | FSS | OLTF of the north loop (now with data) | Summary
|
|
|
1582
|
Sun Sep 13 13:56:04 2015 |
Antonio | DailyProgress | Electronics Equipment | Gain Knobs calibration on the North side | Summary
|
|
|
1587
|
Sun Oct 11 23:16:34 2015 |
Antonio | DailyProgress | VCO | Marconi ( IFR 2023a) OLTF, noise and calibration | Summary
=========
Before starting to work on reducing |
|
|
1588
|
Mon Oct 12 16:22:19 2015 |
Antonio | DailyProgress | VCO | Marconi ( IFR 2023a) OLTF, noise and calibration | I add a PLL transfer function taken with
the SR785: It shows a unity gain frequency
of ~54kHz instead of ~27kHz. |
|
|
1590
|
Wed Oct 14 20:30:27 2015 |
Antonio | DailyProgress | BEAT | PLL noise | Summary
|
|
|
1592
|
Fri Oct 16 22:24:35 2015 |
Antonio | Summary | BEAT | PLL noise and beat frequency at 50MHz | Summary
Today the beat frequency was
very difficult to find. Something changed, |
|
|
1593
|
Sun Oct 18 20:15:55 2015 |
Antonio | DailyProgress | ISS | ISS on the North path and new optical setup | Summary
|
|
|
1595
|
Sun Oct 25 21:52:43 2015 |
Antonio | DailyProgress | EOM | Beam profile measurement | Before the installation of the AEOM in
the South cavity I wanted to have look to
the beam profile along the paths. EOMs provokes |
|
|
1596
|
Sun Oct 25 22:15:35 2015 |
Antonio | Summary | EOM | AEOM installed in the South path. Noise issue. | Summary
The AEOM has been installed in
the South path replacing the EOM 21MHz used |
|
|
1599
|
Thu Oct 29 20:14:33 2015 |
Antonio | DailyProgress | AOM | EAOM removed | In order to debug the intensity noise that
I found after the installation of the EAOM
in the South path I have removed it from |
|
|
1600
|
Thu Oct 29 21:06:53 2015 |
Antonio | DailyProgress | Laser | Current setup of the lasers (to be changed) and power measurements | Summary
While I was debugging the "high"
intensity noise at the ISSPD north i have |
|
|
1601
|
Sat Oct 31 21:24:19 2015 |
Antonio | DailyProgress | AOM | EAOM implemented in the South path again (2) | The
EAOM is again in place but not the lambda/4 |
|
|
1603
|
Wed Nov 4 10:54:30 2015 |
Antonio | HowTo | Documentation | elog etiquette | Scusami :-(. D'ora in poi usero'
solo PDF :-)!!!
|
|
|
1604
|
Wed Nov 4 11:14:24 2015 |
Antonio | DailyProgress | ISS | ISS on South path is "working" | Summary
|
|
|
1605
|
Wed Nov 4 11:28:37 2015 |
Antonio | DailyProgress | BEAT | Beat noise did not improve with the ISSs ON | Summary
|
|