Geometric and magnetic measurements of the gantry dipole for the HICAT medical accelerator

Author

Moritz, G. ; Pschorn, I. ; Klos, F. ; Weipert, M.

Author_Institution

GSI Gesellschaft fuer Schwerionenforschung, Darmstadt, Germany

Volume

14

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

612

Lastpage

615

Abstract

Part of the HICAT medical accelerator, under construction at Heidelberg, Germany, is a huge gantry dipole. The magnet design was already reported at MT-17. This paper summarizes the main construction features. The geometric measurements are made with a laser tracker and include the determination of the iron core dimensions, the fiducialization and the alignment of the magnetic measurement equipment. Goal of the magnetic measurements was to shim the effective field boundary, to measure the integral field quality and the absolute integral field values. Dynamic field data in the central and in the fringe field are also reported.

Keywords

beam handling equipment; biomedical equipment; cancer; magnetic field measurement; radiation therapy; superconducting magnets; HICAT medical accelerator; dipole magnet; dynamic field data; effective field boundary; fiducialization; gantry dipole; geometric measurements; iron core; laser tracker; magnetic measurement; magnetic measurements; Acceleration; Coordinate measuring machines; Integral equations; Iron; Lamination; Magnetic cores; Magnetic field measurement; Magnetic separation; Magnetic variables measurement; Saturation magnetization; Dipole magnet; fiducialization; gantry; laser tracker;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2004.830000

Filename

1324868