Development of a Superconducting Solenoid for Hyperfine Structure Measurement of Muonium at the J-PARC

Author

Sasaki, K.-I. ; Sugano, M. ; Ohkubo, R. ; Iinuma, H. ; Ogitsu, T. ; Saito, N. ; Shimomura, K. ; Yamamoto, Akiyasu

Author_Institution

High Energy Accel. Res. Organ. (KEK), Tsukuba, Japan

Volume

22

Issue

3

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

4500904

Lastpage

4500904

Abstract

A superconducting solenoid for a new Muonium HyperFine Structure, MuHFS, measurement at J-PARC is being developed. High homogeneity of magnetic field below 1 ppm is required for this experiment. Superconducting main coils were designed and error fields caused by the main coil misalignment were evaluated for designing superconducting shim coils. The coil deformation by the coil winding, thermal contraction and hoop stress due to the magnetic force was also estimated. Quench protection study was performed to determine the parameters of superconducting strand.

Keywords

deformation; hyperfine structure; magnetic field measurement; magnetic fields; magnetic forces; muonium; quenching (thermal); solenoids; superconducting coils; J-PARC; MuHFS; coil deformation; coil winding; error fields; hoop stress; hyperfine structure measurement; magnetic field; magnetic force; main coil misalignment; muonium hyperfine structure; quench protection study; superconducting main coils; superconducting shim coils design; superconducting solenoid; superconducting strand; thermal contraction; Magnetic noise; Magnetic resonance imaging; Magnetic shielding; Superconducting coils; Superconducting magnets; Windings; Hyperfine transition; J-PARC; muonium; superconducting solenoid;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2011.2176301

Filename

6082399