一、引言二极管是强流脉冲电子束加速器(REBA)的关键部件(见图1),粒子束的产生和聚焦是在二极管里完成的。二极管性能的研究主要依赖于对束流的诊断,而诊断包括电压、电流、束流能量、X射线辐射测量等等,通常要用多种方法对上述参量进行联合诊断,以互 I. INTRODUCTION Diodes are a key component of the intense pulsed electron beam accelerator (REBA) (Figure 1). The generation and focusing of the particle beam is done in the diode. The research of diode performance mainly depends on the diagnosis of the beam, and the diagnosis includes voltage, current, beam energy, X-ray radiation measurement and so on. Usually, a variety of methods are used to jointly diagnose the above parameters,