Imaging Detector for Ultracold Neutrons using SOI Pixel Sensors and its Application to an Experimental Test of the Weak Equivalence Principle

15 Dec 2017, 09:20
20m
Conference Center (Okinawa Institute of Science and Technology Graduate University (OIST))

Conference Center

Okinawa Institute of Science and Technology Graduate University (OIST)

OIST, Onna, Okinawa 904-0495, Japan
ORAL SOI detectors Session15

Speaker

Yoshio Kamiya (University of Tokyo (JP))

Description

The Weak Equivalence Principle (WEP) is one of the fundamental concepts of the theory of General Relativity. It has long been subjected to experimental tests, and possible anomalies are evaluated using the ratio of inertial and gravitational masses or the Eotvos parameter. However, most experimental tests have been performed in the classical regime and only few tests have been attempted in the quantum regime. In this talk, we propose an experimental test of the WEP in the quantum regime by simultaneously measuring the energy and length scales of gravitationally bound ultracold neutrons. We develop a time-resolving imaging device based on an event-driven SOI pixel sensor with a neutron converter layer. We will present the detailed design and characteristics of this detector.

Authors

Akihiro Koyama (University of Tokyo) Ayaki Takeda (University of Miyazaki) Prof. Ikuo Kurachi (HIgh Energy Accelerator Research Organization) Johnny Alejandro Mora Grimaldo Kenji Shimazoe (The University of Tokyo) Kenta Uchida (University of Tokyo (JP)) Sachio Komamiya (The University of Tokyo) Takeshi Tsuru (Kyoto University) Tatsuki Ose (The University of Tokyo) Yasuo Arai (High Energy Accelerator Research Organization (JP)) Yoshio Kamiya (University of Tokyo (JP)) Yoshiyuki Onuki (University of Tokyo) Yuri Yoshihara

Presentation materials