Varian Medical Systems Particle Therapy Gmbh

Varian Medical Systems Particle Therapy Gmbh & Co Kg

Heinrich Roecken

Jan Timmer

Thomas Stephani

Uwe Behrens

Christian Baumgarten

Peter Vom Stein

In various embodiments, a radiation therapy system can include a cyclotron that outputs a charged particle beam. In addition, the radiation therapy system can include an apparatus to receive the charged particle beam from the cyclotron. The apparatus decelerates or further accelerates the charged particle beam to produce a reduced or increased energy charged particle beam. The apparatus can include a radio frequency structure.

Energy modulation of a cyclotron beam

Systems and methods are provided to perform efficient, automatic cyclotron initialization, calibration, and beam adjustment. A process is provided that allows the automation of the initialization of a cyclotron after overnight or maintenance imposed shutdown. In one embodiment, five independent cyclotron system states are defined and the transition between one state to another may be automated, e.g., by the control system of the cyclotron. According to these embodiments, it is thereby possible to achieve beam operation after shutdown with minimal manual input. By applying an automatic procedure, all active devices of the cyclotron (e.g., RF system, extraction deflectors, ion source) are respectively ramped to predefined parameters.

System and method for automated cyclotron procedures

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Bonn, Germany

Heinrich Roecken