The 14th KAGRA International Workshop

Session

Poster session

15 May 2026, 17:50

Conveners

Poster session

• Helios Vocca (Università di Perugia)

106. Deep Reinforcement Learning for Lock Acquisition Optimization in Non Linear Optical Cavities.

Andrea Svizzeretto

Poster

Speeding up the locking procedure and establishing the resonance condition of optical cavities are crucial aspects to improve the duty cycle of gravitational wave detectors, enhancing the time within we are able to detect new significant signals. However, the process is highly challenging due to several non-linear effects, such as cavity ringing and resonance drift caused by thermal effect and...

83. Development of a hybrid low-frequency vibration isolation system

Ryutaro Takahashi (National Astronomical Observatory of Japan)

Poster

Ultimate seismic isolation at low frequencies is necessary for 3rd-generation gravitational-wave detectors. To isolate low-frequency seismic motions, we suggest a hybrid two-stage system with an inverted pendulum and a Roberts linkage. It is possible to tune each resonant frequency independently. We plan to make a prototype hybrid suspension in the TAMA facility.

86. Modeling of a seismic attenuation system for gravitational wave detectors

Alessandro Kotchian (INFN Perugia, Univ. Perugia)

Poster

Implementation of deep reinforcement learning for seismic noise attenuation in gravitational-wave detectors. The Gymnasium environment simulates a mirror with 4 actuators on which the agent, such as DDPG, can act to stabilize it.

85. Numerical modeling of quantum noise in gravitational waves detectors

Greta Tosti

Poster

This project simulates the quantum noise of gravitational waves interferometric detectors in different configurations: no squeezing injection, frequency independent squeezing and frequency dependent squeezing (with filter cavity). It implements substrate losses and intra-cavity arm losses. EPR squeezing injection is also implemented, future developments include the fine tuning of the...

90. TOrsion Bar Antenna as a Testbed for 3G Detector

Tatsuya Sugioka (University of Tokyo)

Poster

TOrsion-Bar Antenna (TOBA) is a ground-based gravitational wave detector using torsion pendulums. The resonant frequency of torsional motion is ∼ 1 mHz, therefore TOBA has good sensitivity in low frequency. TOBA can detect IMBH binary mergers, Newtonian noise, and even contribute to earthquake early warning systems. A prototype Phase-III TOBA is under development to demonstrate noise reduction...