Development of multilayer neutron interferometer for measurement of gravitationally induced phase

Research Project

Project/Area Number	24684018
Research Category	Grant-in-Aid for Young Scientists (A)
Allocation Type	Partial Multi-year Fund
Research Field	Particle/Nuclear/Cosmic ray/Astro physics
Research Institution	The Institute of Physical and Chemical Research
Principal Investigator	SEKI Yoshichika 独立行政法人理化学研究所, 光量子工学研究領域, 特別研究員 (90585209)
Project Period (FY)	2012-04-01 – 2015-03-31
Project Status	Completed (Fiscal Year 2014)
Budget Amount *help	¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000) Fiscal Year 2013: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000) Fiscal Year 2012: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
Keywords	中性子 / 干渉計 / 中性子干渉計 / 多層膜 / 重力
Outline of Final Research Achievements	We have advanced the multilayer neutron interferometer for the measurement of COW phase induced in the neutron wave function by gravitational interaction between the neutron and the Earth. For the phase stability, the rigidity of mounting mechanism for the beam splitters has been improved and the feedback mechanism for guiding magnetic field has been introduced. For utilization of white beam, it has been shown that we should use not just supermirrors but multi-colored mirrors to avoid phase dispersion in mirrors. We also have evaluated the possibility of the detection of phases induced by general-relativistic effects.

Report

(4 results)