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Title: A magnetic field cloak for charged particle beams

Abstract

Shielding charged particle beams from transverse magnetic fields is a common challenge for particle accelerators and experiments. In this study, we demonstrate that a magnetic field cloak is a viable solution. It allows for the use of dipole magnets in the forward regions of experiments at an Electron Ion Collider (EIC) and other facilities without interfering with the incoming beams. The dipoles can improve the momentum measurements of charged final state particles at angles close to the beam line and therefore increase the physics reach of these experiments. In contrast to other magnetic shielding options (such as active coils), a cloak requires no external powering. We discuss the design parameters, fabrication, and limitations of a magnetic field cloak and demonstrate that cylinders made from 45 layers of YBCO high-temperature superconductor, combined with a ferromagnetic shell made from epoxy and stainless steel powder, shield more than 99% of a transverse magnetic field of up to 0.45 T (95% shielding at 0.5 T) at liquid nitrogen temperature. Lastly, the ferromagnetic shell reduces field distortions caused by the superconductor alone by 90% at 0.45 T.

Authors:
 [1];  [2];  [3];  [4];  [5];  [2];  [4];  [4];  [4];  [6];  [4];  [4];  [4];  [4];  [4];  [4];  [4];  [4];  [7]
+ Show Author Affiliations
  1. Stony Brook Univ., NY (United States). Department of Physics and Astronomy; Brookhaven National Lab. (BNL), Upton, NY (United States). Superconducting Magnet Division
  2. Stony Brook Univ., NY (United States). Department of Physics and Astronomy; University of Washington, Seattle, WA (United States). Department of Physics
  3. Stony Brook Univ., NY (United States). Department of Physics and Astronomy; Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Department
  4. Stony Brook Univ., NY (United States). Department of Physics and Astronomy
  5. Stony Brook Univ., NY (United States). Department of Physics and Astronomy; University of Virginia, Charlottesville, VA (United States). Department of Physics
  6. Stony Brook Univ., NY (United States). Department of Physics and Astronomy; Brookhaven National Lab. (BNL), Upton, NY (United States). Collider Accelerator Department
  7. Stony Brook Univ., NY (United States). Department of Physics and Astronomy; Northeastern University, Boston, MA (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1413946
Alternate Identifier(s):
OSTI ID: 1549279
Report Number(s):
BNL-114725-2017-JA
Journal ID: ISSN 0168-9002; R&D Project: PO 004; KB0202012; TRN: US1800599
Grant/Contract Number:  
SC0012704; AC02-98CH10886
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 877; Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Relativistic Heavy Ion Collider; Electron Ion Collider; Interaction region; Magnetic field shielding; Magnetic field cloaking

Citation Formats

Capobianco-Hogan, K. G., Cervantes, R., Deshpande, A., Feege, N., Krahulik, T., LaBounty, J., Sekelsky, R., Adhyatman, A., Arrowsmith-Kron, G., Coe, B., Dehmelt, K., Hemmick, T. K., Jeffas, S., LaByer, T., Mahmud, S., Oliveira, A., Quadri, A., Sharma, K., and Tishelman-Charny, A. A magnetic field cloak for charged particle beams. United States: N. p., 2017. Web. doi:10.1016/j.nima.2017.09.034.
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Capobianco-Hogan, K. G., Cervantes, R., Deshpande, A., Feege, N., Krahulik, T., LaBounty, J., Sekelsky, R., Adhyatman, A., Arrowsmith-Kron, G., Coe, B., Dehmelt, K., Hemmick, T. K., Jeffas, S., LaByer, T., Mahmud, S., Oliveira, A., Quadri, A., Sharma, K., & Tishelman-Charny, A. A magnetic field cloak for charged particle beams. United States. https://doi.org/10.1016/j.nima.2017.09.034
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Capobianco-Hogan, K. G., Cervantes, R., Deshpande, A., Feege, N., Krahulik, T., LaBounty, J., Sekelsky, R., Adhyatman, A., Arrowsmith-Kron, G., Coe, B., Dehmelt, K., Hemmick, T. K., Jeffas, S., LaByer, T., Mahmud, S., Oliveira, A., Quadri, A., Sharma, K., and Tishelman-Charny, A. Mon . "A magnetic field cloak for charged particle beams". United States. https://doi.org/10.1016/j.nima.2017.09.034. https://www.osti.gov/servlets/purl/1413946.
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@article{osti_1413946,
title = {A magnetic field cloak for charged particle beams},
author = {Capobianco-Hogan, K. G. and Cervantes, R. and Deshpande, A. and Feege, N. and Krahulik, T. and LaBounty, J. and Sekelsky, R. and Adhyatman, A. and Arrowsmith-Kron, G. and Coe, B. and Dehmelt, K. and Hemmick, T. K. and Jeffas, S. and LaByer, T. and Mahmud, S. and Oliveira, A. and Quadri, A. and Sharma, K. and Tishelman-Charny, A.},
abstractNote = {Shielding charged particle beams from transverse magnetic fields is a common challenge for particle accelerators and experiments. In this study, we demonstrate that a magnetic field cloak is a viable solution. It allows for the use of dipole magnets in the forward regions of experiments at an Electron Ion Collider (EIC) and other facilities without interfering with the incoming beams. The dipoles can improve the momentum measurements of charged final state particles at angles close to the beam line and therefore increase the physics reach of these experiments. In contrast to other magnetic shielding options (such as active coils), a cloak requires no external powering. We discuss the design parameters, fabrication, and limitations of a magnetic field cloak and demonstrate that cylinders made from 45 layers of YBCO high-temperature superconductor, combined with a ferromagnetic shell made from epoxy and stainless steel powder, shield more than 99% of a transverse magnetic field of up to 0.45 T (95% shielding at 0.5 T) at liquid nitrogen temperature. Lastly, the ferromagnetic shell reduces field distortions caused by the superconductor alone by 90% at 0.45 T.},
doi = {10.1016/j.nima.2017.09.034},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 877,
place = {United States},
year = {Mon Oct 02 00:00:00 EDT 2017},
month = {Mon Oct 02 00:00:00 EDT 2017}
}
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https://doi.org/10.1016/j.nima.2017.09.034
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