A novel property of anti-Helmholz coils for in-coil syntheses of antihydrogen atoms: formation of a focused spin-polarized beam

We demonstrate here that cold antihydrogen beams formed and extracted from a cusp magnet (anti-Helmholtz coils) are well focused and spin-polarized. A new discovery was the fact that the antihydrogen beam follows the well-known lens formula of optical lenses with its focal length properly scaled wit...

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Bibliographic Details
Published inNew journal of physics Vol. 16; no. 8; pp. 83026 - 10
Main Authors Nagata, Yugo, Yamazaki, Yasunori
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 12.08.2014
Subjects
Antihydrogen
atomic and molecular beam sources and techniques
beam optics
Beams (radiation)
Coils
Cold spinning
Cusps
exotic atoms and molecules
Field strength
Kinetic energy
Lenses
Magnetic fields
Magnetic lenses
Magnetic moments
Matter & antimatter
Optimization
Physics
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Summary:We demonstrate here that cold antihydrogen beams formed and extracted from a cusp magnet (anti-Helmholtz coils) are well focused and spin-polarized. A new discovery was the fact that the antihydrogen beam follows the well-known lens formula of optical lenses with its focal length properly scaled with the initial kinetic energy, the magnetic field strength and the magnetic moment. Furthermore, the simulation revealed that for a certain kinetic energy region of antihydrogen atoms, the optimum production position is upstream of the center of the cusp magnet, where a well-known nested potential configuration can be applied.
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ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/16/8/083026