变像管扫描相机扫描速度及非线性的标定技术

变像管扫描相机在超快物理过程的研究中具有广泛的应用。扫描速度及其非线性作为相机的主要技术指标之一,其准确度对实验结果有着重要影响。为了准确获取数据,确保实验结果的可靠性,采用皮秒光脉冲源、标准具及精密延时器,对高速变象管相机扫描速度和扫描速度非线性进行了实验标定,取得了较好的扫描速度非线性实验数据。结果表明,标定的变像管扫描相机最大扫描速度非线性为±3.52%;标定结果最大相对误差为±1.4%。这一结果对有效提高实验数据处理和物理分析的可靠性是有很大帮助的。

Sweep speed and its nonlinearity calibration for an image-converter tube streak camera

Image-converter tube streak cameras are commonly used in study on ultra-high speed physical phenomena. The sweep speed and its nonlinearity are main parameters of an image-converter tube streak camera and its accuracy has great effect on experimental results of ultra-high speed physical phenomena. The cause of nonlinearity was explained in theory. A method was introduced to calibrate the sweep speed and its nonlinearity, in which a picosecond light pulse source, an etalon and a high precision time delay device was used. Better experimental results were obtained with ±3.52% maximum nonlinearity of the sweep speed and its relative error of measurement was ±1.4%，which improved the reliability of experimental data processing and analysis effectively.