Abstract

A method for controlling the synchrotron beam intensity during proton irradiation of patients is proposed. The control is based on the installation of two precision “warm-liquid” pad chambers, one at the exit from the last scanning magnet and the other in front of the patient. The intensity density of the beam directed to the irradiated target using two pad chambers is measured. The measured intensity density profiles are compared with specified parameters; the beam is turned off if the measured parameters deviate from the permissible ones. The result is an increase in the proton therapy conformity due to the continuous dose and dose field boundary control in the target for each accelerator pulse.

中文翻译：

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通过“ Prometheus”加速器上的“温暖液体”垫腔进行光束监测的功能

摘要

提出了一种在患者质子辐照过程中控制同步辐射束强度的方法。该控制基于两个精密“温液”垫腔的安装，一个在最后一个扫描磁铁的出口，另一个在患者前面。测量使用两个垫板腔室引导到被照射目标的光束的强度密度。将测得的强度密度分布与指定参数进行比较；如果测量的参数偏离允许的参数，则关闭光束。结果是由于针对每个加速器脉冲的目标中的连续剂量和剂量场边界控制，质子治疗的顺应性增加。