Gesellschaft Fuer Schwerionenforschung Mbh

Gesellschaft Fuer Schwerionenforschung Gmbh

Gsi Helmholtzzentrum Fur Schwerionenforschung Gmbh

Ulrich Ratzinger

Bernhard Schlitt

Alwin Schempp

Alexander Bechthold

Gerhard Kraft

Thomas Haberer

Dieter Schardt

Hartmut Eickhoff

Bernhard Franczak

Wolfgang Enghardt

Marius Pavlovic

Ulrich Weber

Ludwig Dahl

Wilma Kraft-Weyrather

Stefan Setzer

Serguej Minaev

Michael Kraemer

Juergen Klabunde

Udo Krause

Aleksiy Dolinski

Rainer Hinz

Joerg Pawelke

Michael Krämer

Jörg Pawelke

Jürgen Klabunde

The present invention relates to an apparatus for pre-acceleration of ions and optimized matching of beam parameters used in a heavy ion application comprising a radio frequency quadruple accelerator (RFQ) having two mini-vane pairs supported by a plurality of alternating stems accelerating the ions from about 8 keV/u to about 400 keV/u and an intertank matching section for matching the parameters of the ion beam coming from the radio frequency quadruple accelerator (RFQ) to the parameters required by a subsequent drift tube linear accelerator (DTL).

Apparatus for pre-acceleration of ion beams used in a heavy ion beam application system

The invention relates to a drift tube accelerator () for the acceleration of ion packets in ion beam acceleration systems, wherein a housing () consists of a longitudinally divided three-part vacuum tank () having a central unit () and a lower half-shell () comprising a structured lower steel block () and an upper half-shell () comprising a structured upper steel block (). (The cavity arranged between the central unit () and the structured steel blocks () has at least two acceleration regions (), between which there is arranged a magnetic focussing device (), which focuses the ion beam from one region () to the next region ().)The drift tube accelerator () according to the invention has such a stable and massive structure that it requires no external supporting aids of any kind in order to obtain alignment, which is reliable and accurate to a few micrometers, of the acceleration components within the drift tube accelerator () with respect to the longitudinal axis () of ion beam guidance of the central unit (). The massive structure of the drift tube accelerator () according to the invention can be used in general for any linear accelerator.

Drift tube accelerator for the acceleration of ion packets

The present invention relates to a device for electron beam pulse formation and amplification comprising an electron beam axis () for microstructuring and amplifying current pulses. Such a device is especially suitable for pulse frequencies of from 100 to 400 MHz and power amplifications of several megawatts. The device can be used especially for ion beam acceleration, the device being arranged directly in an ion accelerator tank () having a central container axis () for guiding and accelerating a pulsed ion beam () in the container axis (). The electron beam pulse formation and amplification device () is arranged with its electron beam axis () transverse and offset relative to the container axis () and comprises outside the ion accelerator tank () device components for microstructuring the electron beam () and, inside the container, comprises device components for output coupling of the electron beam to the consumer, which, in a preferred embodiment, is the ion beam () itself. The present invention relates also to corresponding methods of, on the one hand, ion beam acceleration and, on the other hand, electron beam pulse formation and amplification.

Device and method for ion beam acceleration and electron beam pulse formation and amplification

Apparatus for pre-acceleration of ion beams used in a heavy ion beam applications system

An ion beam therapy system and method for operating the system includes a source of ions ( ), an accelerator system ( ) and an ion beam transport system ( ) for directing an ion beam to a plurality of treatment stations ( ) to treat patients. The ion beam transport system ( ) includes a gantry ( ) carrying a vertical deflection system ( ) and horizontal deflection system ( ) positioned upstream from a last bending magnet (65) so as to provide a parallel scanning mode by an edge focusing effect.

Ion beam therapy system and a method for operating the system

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Darmstadt, Germany

Ulrich Ratzinger