3-D Transient Process Calculations For Fast Cycling Superferric Accelerator Magnets

Author

Fischer, Egbert ; Kurnyshov, Roman ; Moritz, Gebhard ; Shcherbakov, Petr

Author_Institution

Gesellschaft fur Schwerionenforschung mbH, Darmstadt

Volume

16

Issue

2

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

407

Lastpage

410

Abstract

Fast cycling superferric magnets are planned for use in the new International Accelerator Facility for Antiprotons and Ion Research (FAIR) at GSI, Darmstadt. The efficiency of this magnet is basically defined by the AC loss at liquid helium temperatures in the construction elements of the dipoles and quadrupoles (iron yoke, coil, beam pipe restraints and suspension). A detailed knowledge of the 3D magnetic field, the eddy current distributions and their transient behavior is necessary to minimize the hysteresis and the eddy current losses through the use of an appropriate design. Methodical problems are considered for finite element calculations (ANSYS) of eddy currents in a laminated iron yoke. The results for window-frame dipoles and quadrupoles of the Nuclotron type are given. We present the influence of nonlinear and anisotropic magnetic and electrical properties of laminated steel and of bulk restraint elements

Keywords

accelerator magnets; beam handling techniques; eddy currents; finite element analysis; hysteresis; ion accelerators; storage rings; superconducting magnets; 3-D transient process calculations; 3D magnetic field; AC loss; ANSYS; Darmstadt; FAIR; GSI; International Accelerator Facility for Antiprotons and Ion Research; beam pipe restraints; bulk restraint elements; coil; dipoles; eddy current distributions; electrical properties; fast cycling superferric accelerator magnets; finite element calculations; hysteresis; laminated iron yoke; laminated steel; liquid helium temperatures; nonlinear anisotropic magnetic properties; quadrupoles; superconducting magnet; suspension; window-frame dipoles; Accelerator magnets; Coils; Eddy currents; Helium; Ion accelerators; Iron; Magnetic fields; Magnetic levitation; Structural beams; Temperature; AC losses; accelerator magnets; eddy currents; finite-element methods; superconducting magnet;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2005.864338

Filename

1642874