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Alexander Schilling¹, Max Aehle¹, Johan Alme²

¹Chair for Scientific Computing, University of Kaiserslautern-Landau (RPTU), 67663 Kaiserslautern, Germany.

Biomedical physics & engineering express

|March 12, 2025

概括

优化电荷扩散模型可以提高质子计算机断层扫描和范围验证的准确性. 特定应用的模型,如 pCT 的功率定律和范围验证的 Cauchy-Lorentz 模型,可提高 ALICE 像素检测仪 (ALPIDE) 望远镜的性能.

科学领域:

粒子物理学粒子物理学
医学物理医学物理
探测器技术探测器技术

背景情况:

单立体主动像素传感器对于不同领域的带电粒子跟踪至关重要.
阿里斯像素检测器 (ALPIDE) 用于质子计算断层扫描 (pCT) 和粒子治疗范围验证.
准确的电荷扩散建模对于解释像素探测器中的能量沉积至关重要.

研究的目的:

使用ALPIDE传感器优化电荷扩散模型,用于PCT和现场范围验证.
评估不同电荷扩散模型对下游应用性能的影响.
为特定应用确定最有效的扩散模型.

主要方法:

来自丹麦粒子治疗中心的实验数据被用于模型优化.
各种电荷扩散模型的参数与实验数据相匹配.
评估了下游任务性能,以量化电荷扩散建模的影响.

主要成果:

与通用模型相比,特定应用的电荷扩散模型产生了优异的结果.
一个功率定律模型证明了质子计算机断层扫描的最佳性能.
一个2D Cauchy-Lorentz分布模型为质子范围验证提供了更好的协议.
用多种方法评估下游任务对于性能指标估计至关重要.

结论:

电荷扩散模型的选择显著影响粒子跟踪应用的性能.
用ALPIDE像素望远镜进行质子范围验证时,建议使用2D Cauchy-Lorentz分布模型.
优化,针对特定应用的扩散模型提高了基于ALPIDE的像素望远镜的实用性.

关键词:

电荷扩散扩散是指电荷的扩散.一个单一的活跃像素传感器.质子计算机断层扫描 (PCT) 是一种计算机断层扫描.质子疗法是一种质子疗法.范围验证范围验证范围验证

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