Design Study of a Mini Cyclotron for the Application of Biomedical Accelerator Mass Spectrometry

摘要

A small cyclotron has been considered for the use of biomedical accelerator mass spectrometer (BAMS). Over adecade ago a few cyclotrons had been constructed and tested for AMS, but technical problems of instability and poortransmission efficiency caused to discontinue further developments. The major reason of the demise of cyclotron AMS wasthe dominance of commercial Tandem-based AMS facilities. Now BAMS may ask for more compact system, and perhapsusing positive ions to accelerate isotope tracers is a favorable feature. The design of a cyclotron to meet the requirements ofBAMS has been performed by adopting a compact magnet with high stability and a flat-topping rf system to increasetransmission efficiency.