Development of beam current control system in RF-knockout slow extraction

Development of beam current control system in RF-knockout slow extraction

A raster scanning method has been developed for cancer therapy at NIRS–HIMAC. This method requires a high-accuracy beam current control and fast beam-on/off switching. We have developed a feedback control system of the beam current with the RF-knockout slow extraction method. The system has allowed...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2011-12, Vol.269 (24), p.2915-2918
Hauptverfasser: Mizushima, K., Sato, S., Shirai, T., Furukawa, T., Katagiri, K., Takeshita, E., Iwata, Y., Himukai, T., Noda, K.
Format: Artikel
Sprache:eng
Schlagworte:
Beam currents
Control systems
Delay
Extraction
Feedback control
Heavy-ion therapy
Raster scanning
RF-knockout slow extraction
Ripples
Scanning irradiation
Switching
Synchrotron
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Zusammenfassung:A raster scanning method has been developed for cancer therapy at NIRS–HIMAC. This method requires a high-accuracy beam current control and fast beam-on/off switching. We have developed a feedback control system of the beam current with the RF-knockout slow extraction method. The system has allowed a stable response to beam-on/off switching using a feedback control delay function with a beam-current ripple of 7%.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2011.04.039