The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 2004
Filed:
Apr. 16, 2003
Hartmut Eickhoff, Darmstadt, DE;
Thomas Haberer, Darmstadt, DE;
Peter Spiller, Darmstadt, DE;
Marius Pavlovic, Darmstadt, DE;
Gesellschaft fuer Schwerionenforschung mbH, Darmstadt, DE;
Abstract
The present invention relates to a scanning System for a heavy ion gantry comprising a scanner magnet ( ) for a high energy ion beam used in a heavy ion cancer therapy facility having a maximal bending angle (&agr;) of about 1.5. degree; a curvature radius of about 22 m; a path length of about 0.6 m and a gap height (h) and a gap width (w) in the range of 120 mm to 150 mm. Further each scanner magnet ( ) comprises one glued yoke element made of steel plates having a thickness of up to 0.3 mm and being alloyed with up to 2% silicon. This yoke element has a width in the range of 300 mm to 400 mm, a height in the range of 200 mm to 250 mm and a length in the range of 500 to 600 mm. A coil for each scanner magnet ( ) has a number of windings in the range of 50 to 70. Further the system ( ) comprises a 90 degree dipole ( ) positioned downstream of said scanner magnets ( ) having an aperture adapted to the scanning area, and enclosing a yoke element with gaps to increase the homogeneity of the electric field. Additionally the system encloses beam diagnostic plate type detectors ( ) stapled downstream of said 90 degree bending magnet ( ).