Study of radiofrequency technique for a direct neutrino mass measurement

2015 Fiscal Year Final Research Report

• Project/Area Number: 24654073
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: HASEGAWA MASAYA 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 助教 (60435617)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 電波観測 / ニュートリノ

Outline of Final Research Achievements

The main goal oof this study is to establish a new method for measuring the electron energy based on a radio-frequency technique toward a direct neutrino absolute mass measurement.
Electrons emit the cyclotron radiation in the magnetic field, which is related to the energy of the electron , thus provides a new form of non-destructive spectroscopy.
We designed a prototype detector system which will be used for the proof-of-concept of the frequency-based technique. By using the simulation, we showed the energy resolution of 0.1eV level is possible with this method in principle. In parallel, we evaluated basic performance of detector system which consists of horn antenna for detecting radio-waves, low-pass filter and cryogenic amplifier, and confirm it's promising to detect the electrons with good signal-to-noise ratio. We also started the designing work of the detector for a future neutrino mass measurement.

Free Research Field

宇宙物理