10 MeV、＞80 Gy/s@1 m的光子FLASH放疗射线源

>80 Gy/s@1 m FLASH photon source at 10 MeV

摘要: 报道了基于常温射频直线加速器建成的10 MeV光子FLASH放疗射线源样机，采用高平均电流电子束轰击高速旋转辐射转化靶，在距离靶点1 m远处的固体水模内，X射线剂量率达到80.5 Gy/s，达到未来临床实验与推广所需剂量率阈值。

Abstract: A normal-conducting S-band linear accelerator based 10 MeV photon FLASH radiotherapy X-ray source prototype was built. By using high-energy, high average current electron beam hitting a rotating target, a high dose rate of 80.5 Gy/s at a source-axis distance of 1 m was successfully obtained, which reaches the threshold for future clinical trial.