Materials selection for ferromagnetic compensation in accelerator magnets

Author

Collings, E.W. ; Sumption, M.D.

Author_Institution

Battelle Memorial Inst., Columbus, OH, USA

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

408

Lastpage

411

Abstract

The magnetic hysteresis loops of Fe, Ni, and Ni-Cu in several geometrical forms were measured at 4.2 K. These materials were then evaluated for possible use as ferromagnetic correction elements in magnets wound from superconductive strands. The influences of demagnetization and cold work on the shape of the hysteresis loop were considered, and the saturation magnetizations, as well as the approach to saturation, were measured. Finally, several schemes were developed which would allow the selected alloys to be used for ferromagnetic compensation.<>

Keywords

accelerator magnets; compensation; copper alloys; ferromagnetic materials; iron; magnetic hysteresis; nickel; nickel alloys; superconducting magnets; 4.2 K; Fe; NbTi/Cu; Ni; Ni-Cu; accelerator magnets; ferromagnetic compensation; ferromagnetic correction elements; saturation field adjustment; superconducting magnets; superconductive strands; Accelerator magnets; Demagnetization; Iron; Magnetic hysteresis; Magnetic materials; Shape measurement; Shape memory alloys; Superconducting materials; Superconductivity; Wounds;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.402583

Filename

402583