Development of technique for neutron beam focusing by magnetic flux lattice

• Project/Area Number: 17H02816
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: 一般財団法人総合科学研究機構(総合科学研究センター(総合科学研究室)及び中性子科学センター(研究開発
• Principal Investigator: Suzuki Jun-ichi 一般財団法人総合科学研究機構(総合科学研究センター(総合科学研究室)及び中性子科学センター(研究開発, 中性子科学センター, 主任研究員 (40354899)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000); Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2017: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
• Keywords: 中性子 / 集光 / 磁束格子 / 量子ビーム / 中性子光学

Outline of Final Research Achievements

The aim of this study is to develop a new method of focusing a neutron beam with a strong focusing force by creating a magnetic flux lattice by means of a multipole magnetic field such as a sextupole field in a superconductor and diffracting neutrons through this lattice. We have performed experiments to compare the focusing power above and below the superconducting transition temperature. A change in focusing power was observed, but it could not be increased below the transition temperature. It is necessary to identify the reason why the neutron did not meet the diffraction conditions of the magnetic flux lattice due to the multipole field.

Academic Significance and Societal Importance of the Research Achievements

磁束格子を中性子の制御に応用するための技術開発に挑戦した。しかし、期待通りの成果を得るためには更なる磁束格子デザイン、形成に関する研究が必要である。

Research Products

• [Presentation] Neutron beam control by a vortex lattice (2019)
  • Author(s): J. Suzuki, K. Ohishi, H. Kira, Y. Kawamura, K. Hiroi
  • Organizer: The 3rd Asia-Oceania Conference on Neutron Scattering
  • Int'l Joint Research
• [Presentation] The small and wide angle neutron scattering instrument (TAIKAN) of J-PARC (2018)
  • Author(s): J. Suzuki, S. Takata, K. Ohishi, H. Iwase, K. Kawamura, K. Hiroi, T. Morikawa, M. Sahara
  • Organizer: The 17th International Conference on Small Angle Scattering
  • Int'l Joint Research