= Meeting =

[[attachment:Note_First_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

== 7/8 2016 in Sogang University ==
 * 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.



== 8/2 2016 Skype Telecon ==
=== Preparation ===
 * 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.

=== Other note ===
 * No IR laser beam during the experiment.
 * We have to check again about the safety lecture.

=== Next meeting ===
 * Next meeting will be 8/5 9:20 am. KK will call everyone on skype.
 
== 8/4 2016 Skype telecon ==
 * 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).

== 10/6 2016 skype telecon ==

 * 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

=== paper contents ===
 * we could calibrate oplev using the tilt sensor
 * They agreed ok
 * Tiltsensor's dynamic range was much larger than oplevs
 * environmental perturbation to be improved


== 10/20 2016 Local metting (KK & SJ) ==
 * 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.

== 10/26 2016 skype meeting ==
 * 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

== 3/1 2017 skype meeting ==
 * 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

== 4/13 2017 skype meeting ==

MinutesMeeting0413

== 6/13 2017 skype meeting ==

 * Junegyu edit the draft by 6/14 evening
 * Seiji & Keiko will read by the end of this weekend (6/18)
 
 * The new design to manufacture was fixed
 * Seiji found the way to pay by the Japanese company to the Korean company