Hybrid Quadrupole With Variable Gradient and Precise Regulation of the Magnetic Center

Author

Bondarchuk, E. ; Doinikov, N. ; Kovrizhnykh, N. ; Krause, B. ; Muratov, V. ; Obidenko, T. ; Petrov, A. ; Pflueger, J. ; Shangin, V. ; Sinram, K.

Author_Institution

Efremov Inst., St. Petersburg

Volume

16

Issue

2

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

1566

Lastpage

1569

Abstract

Three versions of hybrid quadrupoles 2a₀=15mm in aperture with shunting elements made of soft magnetic material (SMM) are analyzed. It is shown that Version 1 allows for gradient variation in the range of G=40-90 T/m and the regulation of magnetic center at G_max during the rotation of external ring with shunting inserts. Authors have also analyzed the possibility to regulate the position of quadrupole magnetic axis by rotating additional rods made of hard magnetic material (HMM). The analysis has revealed that in Version 2 the radial displacement of shunts and components of their sections affect the magnetic parameters of the quadrupole. Finally, Version 3 of hybrid yokeless quadrupole is considered. The gradient variation and magnetic center regulation are provided by the radial displacement of HMM pole parts

Keywords

magnetic hysteresis; permanent magnets; soft magnetic materials; hard magnetic material; hybrid quadrupole; magnetic center; magnetic parameters; quadrupole magnetic axis; rods; shunting elements; soft magnetic material; variable gradient; Apertures; Bonding; Hidden Markov models; Magnetic analysis; Magnetic flux; Magnetic materials; Magnetic separation; Permanent magnets; Sections; Soft magnetic materials; Hysteresis; magnetic center; permanent magnets; quadrupole;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2006.869979

Filename

1643155