Meeting

7/1 2016 Skype Telecon

KC and JGP will consider closer for the optical configuration (please upload new info)
KK will check if we have all necessary components
KK, KC and JGP will discuss about the disital software in Seoul
SK and KK will meet in Kamioka for a preparation (8/10)
We'll have another skype meeting before the site work

JGP will prepare the drawing of the configuration (on the pylon optical table)
JGP will prepare the required circuits (signal amps).
For the online data taking and analysis, we will need a digital model and MEDM screens. JGP will prepare the initial concept of the digital software.
With the prepared concept, we will build the model and make MEDM screens during KC/JGP visit (~1day).
We noticed that the digital software cannot do arc tangent. We will consider to use an approximation.
As planned, KK and SK will collect the necessary hardware on 8/10 (DC power supply, 50m cable, cable adaptors, AA filter)
KK will let JGP know about the Dsub 9 pin assignment to connect to an AA filter.

JGP will get the drawing in a few days.
All the parts will arrive today. KC and JGP will carry them (no shipping).
JGP will assemble and test the circuits this week. Reports will be made next week.
Model and MEDM screens will be prepared with Kirii-kun on 8/10 as well as the first phase of the visit.
KC will think about the approximation formula of art tangent to use in the digital model.
SJ will submit the "tunnel entrance form" for the experiment.
KK will send the Dsub pin assignment today.
KK will find AA filter soon.

The parts arrived; some mechanical parts were found wrong; JGP have fixed them; JGP will assemble today.
The drawing of the optical table (python table) will be done today by JGP.
Test result of the setup will be emailed.
KC made the new algorithm without arc tangent. JGP will check the formulas with real data. KK will check if it can be done in the CDS system or not.
Check the safety rule.
SJ will submit the mine entrance form.
JGP will carry the clumps (which is to fix the sensor on the table).

Target is Physics Letter A.
To check the calibration again with the peak areas and higher harmonics taken into account.
To check the drift data with the calibration factor.
To check if the oplev noise went down or not after we took the tiltsensor out.
For paper, KK and SK will write the intro part, and JGP will write the resulting part.
Email to Kanda-san (KSC) about the open data

We do not understand the calibration factors (or the spectrum magnitudes) change between tilt sensors and oplevs
We will re-center the MCE oplev on Monday
An excitation peak will be inserted on MCE and see if the peak height change in time
We will have another local meeting on Wednesday morning.

oplev noise floor change of the last measurement is most likely because of the tilt sensor installation
Jungyu will come to KAGRA and we will repeat the measurement
Windshields will be available thanks to Akutsu san in the next measurement
Schedule is not fixed yet

2nd visit klog list http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/IOO/TiltSensor/Documents2
How can we proceed with KAGRA open data regulations?
- Kawamura-sensei will contact to Kanda-san
- Then Kokeyama will ask to KSC board
Paper contents
- Comparison between oplev and tiltsensor spectra
- present a cal peak to show tiltsensor is properly seeing the mirror motion
- dark/ADC noise limit of tiltsensor
How can we estimate the tiltsensor dark or ADC noise limit?
- Junegyu and Kyuman will study
Target is Optics Letters
Make a rough draft by Niigata f2f meeting
Next call will be a few days before f2f meeting for the presentation there

KAGRA/Subgroups/IOO/TiltSensor/Meeting (last edited 2017-06-13 15:32:24 by KeikoKokeyama)