Ion Beam Applications S.a.

Bertrand Bauvir

Bruno Marchand

The invention concerns a device () for regulating the intensity of a beam extracted from a particle accelerator, such as a cyclotron, used for example for protontherapy, said particles being generated from an ion source. The invention is characterized in that it comprises at least: a comparator () determining a difference &#x3b5; between a digital signal Irepresenting the intensity of the beam measured at the output of the accelerator and a setpoint value Iof the beam intensity: a Smith predictor () which determines on the basis of the difference &#x3b5;, a correct value of the intensity of the beam I; an inverted correspondence table () supplying, on the basis of the corrected value of the intensity of the beam I, a setpoint value Ifor supply arc current from the ion source ().

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Liege, Belgium

Bertrand Bauvir