Superconducting Dipole Magnet for Strangeness Physics Program at J-PARC

Jung Keun Ahn; Sung Hyun Kim; Shin Hyung Kim; Kenichi Imai; Hiroyuki Sako; Seyong Choi; Toshiyuki Takahashi

doi:10.1109/TASC.2016.2517023

Superconducting Dipole Magnet for Strangeness Physics Program at J-PARC

Jung Keun Ahn, Sung Hyun Kim, Shin Hyung Kim, Kenichi Imai, Hiroyuki Sako, Seyong Choi, Toshiyuki Takahashi

Department of Physics

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

A large-acceptance superconducting dipole magnet is currently under construction for extensive strangeness nuclear physics programs at Japan Proton Accelerator Research Complex (J-PARC), Japan. The conduction-cooled superconducting magnet is composed of two circular coils with a radius of 500 mm, vertically 500 mm apart from each other. This Helmholtz-type magnet was designed to keep the field uniformity B_r/B_y at the level of 1% over the inner region of 500 mm in diameter and 500 mm in height. Our main detector is a time projection chamber that uses parallel E and B fields. If there is a transverse component, drifting electrons would take helical paths due to the E × B effect. As a result, the field uniformity is crucial in the design of the magnet. The maximum field strength is 1.5 T. We report our design study and coil test results using a test cryochamber.

Original language	English
Article number	7378891
Journal	IEEE Transactions on Applied Superconductivity
Volume	26
Issue number	4
DOIs	https://doi.org/10.1109/TASC.2016.2517023
State	Published - Jun 2016

Keywords

Conduction cooling
Helmholtz-type
J-PARC
time projection chamber

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10.1109/TASC.2016.2517023

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title = "Superconducting Dipole Magnet for Strangeness Physics Program at J-PARC",

abstract = "A large-acceptance superconducting dipole magnet is currently under construction for extensive strangeness nuclear physics programs at Japan Proton Accelerator Research Complex (J-PARC), Japan. The conduction-cooled superconducting magnet is composed of two circular coils with a radius of 500 mm, vertically 500 mm apart from each other. This Helmholtz-type magnet was designed to keep the field uniformity Br/By at the level of 1% over the inner region of 500 mm in diameter and 500 mm in height. Our main detector is a time projection chamber that uses parallel E and B fields. If there is a transverse component, drifting electrons would take helical paths due to the E × B effect. As a result, the field uniformity is crucial in the design of the magnet. The maximum field strength is 1.5 T. We report our design study and coil test results using a test cryochamber.",

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AU - Ahn, Jung Keun

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AU - Sako, Hiroyuki

AU - Choi, Seyong

AU - Takahashi, Toshiyuki

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AB - A large-acceptance superconducting dipole magnet is currently under construction for extensive strangeness nuclear physics programs at Japan Proton Accelerator Research Complex (J-PARC), Japan. The conduction-cooled superconducting magnet is composed of two circular coils with a radius of 500 mm, vertically 500 mm apart from each other. This Helmholtz-type magnet was designed to keep the field uniformity Br/By at the level of 1% over the inner region of 500 mm in diameter and 500 mm in height. Our main detector is a time projection chamber that uses parallel E and B fields. If there is a transverse component, drifting electrons would take helical paths due to the E × B effect. As a result, the field uniformity is crucial in the design of the magnet. The maximum field strength is 1.5 T. We report our design study and coil test results using a test cryochamber.

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Superconducting Dipole Magnet for Strangeness Physics Program at J-PARC

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Keywords

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