Spiral FFAG lattice design tools. Application to 6-D tracking in a proton-therapy class lattice
- 作者：J. Fourrier ; F. Martinache ; F. Mé ; ot ; J. Pasternak
- 关键词：FFAG ; Spiral scaling FFAG ; Fixed field accelerator ; 6-D tracking ; Fringe field ; Non-linear beam dynamics ; Medical synchrotron ; Hadron-therapy
- 刊名：Nuclear Instruments and Methods in Physics Research Section A ; Accelerators ; Spectrometers ; Detectors and Associated Equipment
- 出版年：2008
- 期刊代码：41_01689002
- 类别：ph
- 出版时间：1 May 2008
- 卷：589
- 期：2
- 页码：133-142
- 文件大小：1481 K
摘要
Methods have been developed, based on ray-tracing, for 3-D modelling of magnetic fields and particle motion in spiral scaling FFAG accelerators. They allow efficient simulation of particle motion in the presence of the strong field non-linearities found in FFAG magnets, and of overlapping fields in configurations of neighbouring magnets. This provides a useful tool for spiral FFAG lattice design and optimization, and for 6-D tracking studies. As illustration, the approach is applied to the design of a 180 MeV medical class proton FFAG now being studied under the RACCAM hadron-therapy project.