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The Optimization of Uniform Magnetic Field for an Experimental Search for Axion-
S/W OPERA-3D 등록일 2020.11.27 조회수 1558
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The Optimization of Uniform Magnetic Field for an Experimental Search for Axion-mediated Spin- Dependent Interaction

Dongok Kim1, Yunchang Shin2, Yannis K. Semertzidis1,2

1Korea Advanced Institute of Science and Technology(KAIST), Daejeon 34141, South Korea,

2Center for Axion and Precision Physics Research(CAPP), Institute for Basic Science(IBS),

Daejeon 34141, South Korea


Possible interaction between unpolarized and polarized nuclei in long range may provide

a new source for PT-violation. Moody and Wilczek proposed that such force might be

mediated by the axion. A new idea of tabletop experiment searching for such interaction

has been proposed from ARIADNE collaboration including SQUID NMR with polarized

3He nuclei using the metastability-exchange optical pumping (MEOP) method. In this

method, uniform magnetic field is required to produce the polarized 3He gas with a laser

at 1083 nm. We describe the finite element method (FEM) as well as the semi-analytical

approach to generate uniform field to preserve polarization with a number of Helmholtz

Coils compared with each other.



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