Aoyama T, Maekoshi H, Tsuzaka M, Koyama S
Nagoya University College of Medical Technology, Japan.
Med Phys. 1995 Dec;22(12):2101-2. doi: 10.1118/1.597499.
A new type of beam-energy monitor is described, which has been developed to check the energies of electron beams from radiotherapy accelerators. The monitor consists of a pair of scintillating fibers and photodiode read-out circuits that measure the energy dependence of electron transmission through a wedge-shaped absorber. A linear energy response and 1% accuracy for energy constancy measurements are attained with the monitor. The monitor having advantages of simple mechanical and electronic constructions, small size, and low cost is suitable for practical use as a portable device.
本文描述了一种新型的束流能量监测器，它是为检测放射治疗加速器产生的电子束能量而开发的。该监测器由一对闪烁光纤和光电二极管读出电路组成，用于测量电子透过楔形吸收体时的能量依赖性。该监测器实现了线性能量响应，能量稳定性测量精度达到1%。该监测器具有机械和电子结构简单、体积小、成本低等优点，适合作为便携式设备实际使用。
