【摘要】 在Ｒ值扫描中利用大角度Ｂｈａｂｈａ事例测量积分亮度，较之以往的同类 过程积分亮度的测量，在事例选择和探测效率的确定方面都作了较大的改进。 用不同的测量方法对本文的结果进行了检查，发现几种结果在误差范围内是一 致的．但本文的测量优化了事例选择条件，所以在一定程度上改善了系统误差．更多还原

【Abstract】 A method is introduced for the measurement of integrated luminosity in R scan by large-angle Bhabha events. Compared with the previous method, some improvements have been made in both events selection and determination of detection efficiency. Several methods are employed to check our results and have given compatible luminosities within errors.更多还原