Simulation Summary (so-far) Meeting
2020 Nov 11, 3pm - 5pm, zoom2
Guest
Hiro Yamamoto Sensei
Participants
Kokeyama, Hirose, Wang, YamamotoH, Leonaridi, Koyama, Oshino, Akutus, Michimura, Yuzurihara, Somiya, Miyakawa, Oshino
Agenda
Topic |
Speaker |
Slide Link |
Dur |
Finesse IFO model |
Kokeyama |
5 mins |
|
OMC model |
Park |
|
5 mins |
Finesse GUI |
Koyama, Hirose |
10 mins |
|
Birefringence |
Wang |
10 mins |
- We will have free discussion time after each talk, which is not shown in the table
Minues
OMC
- Wedge angles of OMC1, OMC2 matters?
Should we include the thickness (and wedge) of OMC1? (Somiya-san) Gouy phase difference between V and H is <1 deg, which should be negligible.
- (Hiro-san)The slope (from HOM 0 -8 of the experiment) maybe reflecting the spatial abbreviation of the test masses having longer wavelength more than short wavelength
(Akutsu-san) Aso-san’s document: this. The current OMC is base on the **-R500.*** files. It is nice to confirm it with him! In my memo, with this document, I did double-checking of the Aso-san’s ray-trace with another commercial simulator.
GUI
- The windows installation procedure is ready
- (Hiro-san) Can you add mirrors? - No
- We can expand the configuration, such as OMC and IMC.
- (Akutsu-san) Can you change macroscopic lengths? - Yes
Birefringence
Mach-Zhender model to simulate S->S, S->P, P->S, P->P conversion.
- The intuitive understanding of this model is to convert S-P basis to e-o basis (extraordinary and ordinary axes) by the first BS, and covert back to S-P by the second BS.
- Are the phi maps really correct
- We need alpha_{-} map for the simulation
- We look for measurement data with circular polarization (P.6 of Haoyou's slide)
- Is phi and alpha_{-} related?
This measurement shows only a few degree birefringence (sample sapphire, NAOJ measurement) whereas our phi map is -40~40 degrees.
Hirose-san paper (showing the measurement method)
- Maybe we can have a small meeting with Matteo nad Aso-san for their help?