Patent ID: 6881970
Filing Date: 2005-04-19
Classification: A61N,G21K,H05H

Abstract:
1. A charged particle beam irradiation equipment for irradiating charged particle beam to an object, comprising a first scanning electromagnet for scanning a charged particle beam in a first direction, a second scanning electromagnet for scanning a charged particle beam in a second direction which intersecting with the first direction, a first power supply for applying a voltage to the first scanning electromagnet, and a second power supply for applying a voltage to the second scanning electromagnet, wherein said first power supply comprises a first power supply unit having no filter and a second power supply unit having a filter, said second power supply comprises another first power supply unit having no filter and another second power supply unit having another filter, a first scanning electromagnet control device for controlling said first power supply unit and said second power supply unit in said first power supply, and a second scanning electromagnet control device for controlling said another first power supply unit and said another second power supply unit in said second power supply.