Song Yingdong, Yang Haibo, Zhang Yuezhao, Liao Jianwei, Jia Yanhao, Ma Peng, Hou Yufeng, Sun Xiangming, Wang Hulin, Song Haisheng, Zhao Chengxin
College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
Sensors (Basel). 2024 Apr 9;24(8):2387. doi: 10.3390/s24082387.
To monitor the position and profile of therapeutic carbon beams in real-time, in this paper, we proposed a system called HiBeam-T. The HiBeam-T is a time projection chamber (TPC) with forty Topmetal-II- CMOS pixel sensors as its readout. Each Topmetal-II- has 72 × 72 pixels with the size of 83 μm × 83 μm. The detector consists of the charge drift region and the charge collection area. The readout electronics comprise three Readout Control Modules and one Clock Synchronization Module. This Hibeam-T has a sensitive area of 20 × 20 cm and can acquire the center of the incident beams. The test with a continuous 80.55 MeV/u C beam shows that the measurement resolution to the beam center could reach 6.45 μm for unsaturated beam projections.
为了实时监测治疗用碳离子束的位置和轮廓，在本文中，我们提出了一种名为HiBeam-T的系统。HiBeam-T是一个时间投影室（TPC），其读出装置为40个Topmetal-II-CMOS像素传感器。每个Topmetal-II有72×72像素，尺寸为83μm×83μm。探测器由电荷漂移区和电荷收集区组成。读出电子设备包括三个读出控制模块和一个时钟同步模块。这个HiBeam-T的灵敏面积为20×20 cm，能够获取入射束的中心。用连续的80.55 MeV/u碳离子束进行的测试表明，对于未饱和束投影，束中心的测量分辨率可达6.45μm。
