电子加速器扫描盒前端法兰传热的数值模拟

加速器内电子束团在传输过程中因束流传输截面发散或偏离中心,会超出尺寸一定的传输器件.为防止因此导致扫描盒前端法兰盘局部温升过高,在法兰的外侧安装温度传感器以实时监测受照点的温度,从而及时调整系统的电流、电压、聚焦等有关参数.建立了法兰盘两侧热传导的数学模型,用数值模拟的方法计算得出了放置温度传感器的测量点B和受照点A的温度关系.计算结果与实验值符合,证明了数学模型的正确性,并为加速器的调试、运行提供了一种重要的检测手段.

Numerical simulation of heat transfer on flange plate in front of the electron accelerator's scanning case

Electron beam in accelerators can exceed the transferring hole as a result of beam divergence or eccentricity.Temperature Sensors were introduced on the exterior face of the flange plate to measure the temperature of the radiated area so as to make necessary adjustments timely of current,volt,focus,etc.This paper presents the mathematical model of heat transfer on flange plate.Heat transfer relations were obtained between measurement point B and irradiated point A.The calculated results match with experiments.The mathematical model has been verified,and it could be used as a measurement tool for accelerators' debugging and operation.