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反磁回路(Diamagnetic loop,DML)诊断强流脉冲电子束半径的技术是一种可在线诊断的技术．这种诊断技术与其他方法(如三梯度法)相配合可以同时在线诊断强流脉冲电子束的发射度、束包络斜率等参数．介绍了反磁回路诊断电子束时间分辨均方根半径的原理,并建立了相应的装置,通过标定给出了定标系数．利用反磁回路诊断装置测量了2MeV直线感应型注入器出口处双脉冲强流电子束包络的均方根半径分别为6．84mm和5．63mm,和用分幅相机同步测量的结果具有较好的一致性．
Diamagnetic loop (DML) The technique of diagnosing the intensity of a pulsed electron beam with a high intensity is an online diagnostic technique. This diagnostic technique in conjunction with other methods (such as the three-gradient method) can be simultaneously online diagnosis of high-intensity pulsed electron beam emission, beam envelope slope and other parameters. The principle of time-resolved root-mean-square radius of diagnosis of electron beam with anti-magnetic circuit is introduced and the corresponding device is established. The calibration coefficient is given by calibration. The mean square root radius of the double-pulsed high-current electron beam envelope at the exit of the 2MeV linear induction injector was measured by using a diamagnetic circuit diagnosis device, respectively, and the results were compared with the synchronous measurement by the framing camera Good consistency.