<> ---------- = VIS Meeting = Date: 2025/3/28 10:00-11:00 [[https://zoom.us/j/203743987|Zoom]] Participants: Ushiba, Washimi, Sato, Tanaka, Takahashi == Topics == === Type-A === * ACCs for the IP controls. * Evaluation of the ACC is ongoing with DGS in ATC. === Type-B/Bp === * Enclosure for the SG card into an independent box. * Tanaka-san made a prototype box. It is better to mount a 1U pannel like [[https://www.monotaro.com/p/8834/8145/|this]]. * Yaw damper for Type-B. * We asked ATC about the design of the IRM damper as the item in 2025FY. Conceptual design is [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16608|here]]. Actuator noise should be estimated by comparing it with the OSEM. * IP for Type-Bp. === Type-C === * Active isolation table for OMC. * Akutsu-san closs-checked the model with the Mathematica code. Jacks under the support bellows may be necessary to adjust the height of the table. * The new geophone pre-amp boards had a problem. The power lines were grounded. * Vibration in the IFI chamber * The geophone pod was assembled and passed the leak check, but we gave up on installing it. Washimi-san suggested a handmade in-vac. [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16609|mini-geophone]]. * The STM2 was successfully fixed on 26th. * Small Type-C suspensions with mini-GAS. === R&D === == Discussion == == Next meeting == * 2025/4/11 10:00-