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Description
A 6 MeV S-band radiofrequency accelerating cavity has been designed and simulated for compact medical linear accelerators, particularly for intraoperative radiotherapy systems. The π/2-mode standing-wave structure operates at a frequency of 2.998 GHz. It was optimized through three-dimensional electromagnetic simulations using CST software to attain a high accelerating gradient, efficient power use, and a uniform field distribution.
Detailed analyses of cell geometry and coupling aperture parameters were conducted to enhance the shunt impedance further while reducing peak surface fields. The cavity components have been manufactured and assembled, and are prepared for preliminary RF testing. Initial results demonstrate the suitability of this S-band cavity design as a compact and efficient accelerating structure for advanced, next-generation medical linear accelerators, including portable IORT systems.
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