Compact 3-T superconducting magnet for nucleosynthesis reaction experiments

Shin Hyung Kim; Jung Keun Ahn

doi:10.1016/j.nima.2023.168062

Compact 3-T superconducting magnet for nucleosynthesis reaction experiments

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

Abstract

A compact 3-T superconducting magnet with an active-target time projection chamber and a gamma-ray detector array was constructed for stellar nucleosynthesis studies. This magnet was newly developed based on the previous 1.5-T Helmholtz magnet (Kim and Ahn, 2021) to achieve higher magnetic field and larger space for the detector system. Conduction-cooled Helmholtz coils with an inner diameter of 40 cm generate a central magnetic field of up to 3.0 T at a current of 90.5 A. The operational goal is 2.5 T in nucleosynthesis experiments. The magnet has a large opening between two coils to accommodate the active-target time projection chamber and the gamma-ray detector array. The magnet operates at ramping rates of 0.008–0.02 A/s without quenching and generates highly uniform magnetic field strength within 1% of the central value over a volume of 10 × 10 × 10 cm³, covering a size of active-target time projection chamber. Herein, we report the results of the first excitation test and the field mapping.

Original language	English
Article number	168062
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	1049
DOIs	https://doi.org/10.1016/j.nima.2023.168062
Publication status	Published - 2023 Apr

Bibliographical note

Funding Information:
The authors would like to thank the technical staff at KR-Tech. This study was also supported by the National Research Foundation of Korea (Grant No. 2020R1A3B2079993 ).

Funding Information:
The authors would like to thank the technical staff at KR-Tech. This study was also supported by the National Research Foundation of Korea (Grant No. 2020R1A3B2079993).

Publisher Copyright:
© 2023 Elsevier B.V.

Keywords

Conduction cooling
Helmholtz coils
Stellar nucleosynthesis
Superconducting magnet

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nima.2023.168062

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title = "Compact 3-T superconducting magnet for nucleosynthesis reaction experiments",

abstract = "A compact 3-T superconducting magnet with an active-target time projection chamber and a gamma-ray detector array was constructed for stellar nucleosynthesis studies. This magnet was newly developed based on the previous 1.5-T Helmholtz magnet (Kim and Ahn, 2021) to achieve higher magnetic field and larger space for the detector system. Conduction-cooled Helmholtz coils with an inner diameter of 40 cm generate a central magnetic field of up to 3.0 T at a current of 90.5 A. The operational goal is 2.5 T in nucleosynthesis experiments. The magnet has a large opening between two coils to accommodate the active-target time projection chamber and the gamma-ray detector array. The magnet operates at ramping rates of 0.008–0.02 A/s without quenching and generates highly uniform magnetic field strength within 1% of the central value over a volume of 10 × 10 × 10 cm3, covering a size of active-target time projection chamber. Herein, we report the results of the first excitation test and the field mapping.",

keywords = "Conduction cooling, Helmholtz coils, Stellar nucleosynthesis, Superconducting magnet",

author = "Kim, {Shin Hyung} and Ahn, {Jung Keun}",

note = "Funding Information: The authors would like to thank the technical staff at KR-Tech. This study was also supported by the National Research Foundation of Korea (Grant No. 2020R1A3B2079993 ). Funding Information: The authors would like to thank the technical staff at KR-Tech. This study was also supported by the National Research Foundation of Korea (Grant No. 2020R1A3B2079993). Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

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doi = "10.1016/j.nima.2023.168062",

language = "English",

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AU - Kim, Shin Hyung

AU - Ahn, Jung Keun

N1 - Funding Information: The authors would like to thank the technical staff at KR-Tech. This study was also supported by the National Research Foundation of Korea (Grant No. 2020R1A3B2079993 ). Funding Information: The authors would like to thank the technical staff at KR-Tech. This study was also supported by the National Research Foundation of Korea (Grant No. 2020R1A3B2079993). Publisher Copyright: © 2023 Elsevier B.V.

PY - 2023/4

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N2 - A compact 3-T superconducting magnet with an active-target time projection chamber and a gamma-ray detector array was constructed for stellar nucleosynthesis studies. This magnet was newly developed based on the previous 1.5-T Helmholtz magnet (Kim and Ahn, 2021) to achieve higher magnetic field and larger space for the detector system. Conduction-cooled Helmholtz coils with an inner diameter of 40 cm generate a central magnetic field of up to 3.0 T at a current of 90.5 A. The operational goal is 2.5 T in nucleosynthesis experiments. The magnet has a large opening between two coils to accommodate the active-target time projection chamber and the gamma-ray detector array. The magnet operates at ramping rates of 0.008–0.02 A/s without quenching and generates highly uniform magnetic field strength within 1% of the central value over a volume of 10 × 10 × 10 cm3, covering a size of active-target time projection chamber. Herein, we report the results of the first excitation test and the field mapping.

AB - A compact 3-T superconducting magnet with an active-target time projection chamber and a gamma-ray detector array was constructed for stellar nucleosynthesis studies. This magnet was newly developed based on the previous 1.5-T Helmholtz magnet (Kim and Ahn, 2021) to achieve higher magnetic field and larger space for the detector system. Conduction-cooled Helmholtz coils with an inner diameter of 40 cm generate a central magnetic field of up to 3.0 T at a current of 90.5 A. The operational goal is 2.5 T in nucleosynthesis experiments. The magnet has a large opening between two coils to accommodate the active-target time projection chamber and the gamma-ray detector array. The magnet operates at ramping rates of 0.008–0.02 A/s without quenching and generates highly uniform magnetic field strength within 1% of the central value over a volume of 10 × 10 × 10 cm3, covering a size of active-target time projection chamber. Herein, we report the results of the first excitation test and the field mapping.

KW - Conduction cooling

KW - Helmholtz coils

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KW - Superconducting magnet

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Compact 3-T superconducting magnet for nucleosynthesis reaction experiments

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Bibliographical note

Keywords

ASJC Scopus subject areas

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