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| = In-vac PD/QPD layout meeting 2024/11/20 = Participants: Ray-Kuang Lee, Huali Chen, Yoichi Aso, Yuta Michimura |
= Chat on simulations 2021/09/14 = Participants: Haoyu Wang, Tomotada Akutsu, Yoichi Aso, Yuta Michimura, (Keiko Kokeyama) |
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| Zoom meeting | Zoom meeting: https://zoom.us/j/5045179604 |
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| * Start with AS layout, and then to REFL and POP * By the end of February * Hope to have another person to work on the in-vac layout, as we will need to design the layout for different chambers as well in the future. * In-air AS table layout and some Gouy phase telescope designs live here: * https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9817 * KFC interface optics design lives here: * https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15526 * Most updated OMC chamber drawing lives here (could be slightly different from the reality due to recent activities in OMC chamber): * https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15729 * We want to follow similar Gouy phase telescope design in LIGO * https://dcc.ligo.org/LIGO-T1000247/public |
* '''Decisions''' * Increase the frequency of the simulation meeting to biweekly. Doodle the slot [Haoyu]. * Ask Haoyu and other simulators to join the commissioning(integration) meeting on Wednesday 11:00. * Ask June Gyu the status of OMC model and may be ask him to join birefringence model development. * Current simulation activities * GUI development by Koyama-kun. GUI will be useful for commissioners * IFO model by Kokeyama-san for simulating sensing matrix etc. Haoyu will take over. * OMC model by June Gyu to compare measured OMC scan results with the simulation. May be halted. * Birefringence model by Haoyu. Currently constructing the model. Freq noise coupling etc will be calculated once ready. * Starting point of simulation useful for the site work. * Try to reproduce directly reflected beam from ITM at POP. Dirty shape from birefringence or clipping? * BS s/p reflectivity unbalance and polarization rotation from periscope etc. would change the shape of s/p beam shape. * Comparing the simulation result with POP s-pol/p-pol camera image is a starting point. * Big task will be to check ASC with birefringence included. * Commissioning meeting on Wednesday 11:00 is useful for communication between on-site people and off-site people. |
Chat on simulations 2021/09/14
Participants: Haoyu Wang, Tomotada Akutsu, Yoichi Aso, Yuta Michimura, (Keiko Kokeyama)
Zoom meeting: https://zoom.us/j/5045179604
Minutes
Decisions
- Increase the frequency of the simulation meeting to biweekly. Doodle the slot [Haoyu].
- Ask Haoyu and other simulators to join the commissioning(integration) meeting on Wednesday 11:00.
- Ask June Gyu the status of OMC model and may be ask him to join birefringence model development.
- Current simulation activities
- GUI development by Koyama-kun. GUI will be useful for commissioners
- IFO model by Kokeyama-san for simulating sensing matrix etc. Haoyu will take over.
- OMC model by June Gyu to compare measured OMC scan results with the simulation. May be halted.
- Birefringence model by Haoyu. Currently constructing the model. Freq noise coupling etc will be calculated once ready.
- Starting point of simulation useful for the site work.
- Try to reproduce directly reflected beam from ITM at POP. Dirty shape from birefringence or clipping?
- BS s/p reflectivity unbalance and polarization rotation from periscope etc. would change the shape of s/p beam shape.
- Comparing the simulation result with POP s-pol/p-pol camera image is a starting point.
- Big task will be to check ASC with birefringence included.
- Try to reproduce directly reflected beam from ITM at POP. Dirty shape from birefringence or clipping?
- Commissioning meeting on Wednesday 11:00 is useful for communication between on-site people and off-site people.