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Title: Analysis of an adjustable field permanent magnet solenoid

Abstract

A feasibility study has been performed on an adjustable-field permanent magnet (PM) solenoid concept in an effort to reduce the dependence that linear induction accelerators have on large direct current power supplies and associated cooling systems. The concept relies on the ability to reorient sections of the PMs and thus redirect their magnetization vector to either add to or subtract from the on-axis magnetic field. This study concentrated on the focal strengths and emittance growths for two different designs, both with 19 cm bore diameters extending 53 cm in length. The first design is expected to produce peak magnetic fields ranging from 260 to 900 G (0.026 to 0.09 T) while the second design is expected to produce peak magnetic fields ranging from 580 to 2100 G (0.058 to 0.21 T). Finally, although the PM configuration generates a variable magnetic field and the torques acting on PMs within the assembly appear manageable, the emittance growth is larger than that of a DC solenoid.

Authors:
; ; ;
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1372117
Alternate Identifier(s):
OSTI ID: 1371673
Report Number(s):
LA-UR-17-23068
Journal ID: ISSN 0168-9002; S0168900217306617; PII: S0168900217306617
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Published Article
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Volume: 868 Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; permanent magnet

Citation Formats

Burris-Mog, T., Burns, M., Chavez, A., and Schillig, J. Analysis of an adjustable field permanent magnet solenoid. Netherlands: N. p., 2017. Web. doi:10.1016/j.nima.2017.06.013.
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Burris-Mog, T., Burns, M., Chavez, A., & Schillig, J. Analysis of an adjustable field permanent magnet solenoid. Netherlands. https://doi.org/10.1016/j.nima.2017.06.013
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Burris-Mog, T., Burns, M., Chavez, A., and Schillig, J. Sun . "Analysis of an adjustable field permanent magnet solenoid". Netherlands. https://doi.org/10.1016/j.nima.2017.06.013.
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@article{osti_1372117,
title = {Analysis of an adjustable field permanent magnet solenoid},
author = {Burris-Mog, T. and Burns, M. and Chavez, A. and Schillig, J.},
abstractNote = {A feasibility study has been performed on an adjustable-field permanent magnet (PM) solenoid concept in an effort to reduce the dependence that linear induction accelerators have on large direct current power supplies and associated cooling systems. The concept relies on the ability to reorient sections of the PMs and thus redirect their magnetization vector to either add to or subtract from the on-axis magnetic field. This study concentrated on the focal strengths and emittance growths for two different designs, both with 19 cm bore diameters extending 53 cm in length. The first design is expected to produce peak magnetic fields ranging from 260 to 900 G (0.026 to 0.09 T) while the second design is expected to produce peak magnetic fields ranging from 580 to 2100 G (0.058 to 0.21 T). Finally, although the PM configuration generates a variable magnetic field and the torques acting on PMs within the assembly appear manageable, the emittance growth is larger than that of a DC solenoid.},
doi = {10.1016/j.nima.2017.06.013},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 868,
place = {Netherlands},
year = {Sun Oct 01 00:00:00 EDT 2017},
month = {Sun Oct 01 00:00:00 EDT 2017}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1016/j.nima.2017.06.013
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Works referenced in this record:

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An adjustable linear Halbach array
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