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大型强子对撞机 (LHC)运行时具有很高的辐射背景 ,为达到所要求的电磁量能器的测量精度对研制中的钨酸铅晶体的抗辐照性能提出了很高的要求 .本文主要介绍了用6 0 Co的γ射线 ,在相应的辐照剂量率辐照下 ,对几种全尺寸( 2 3cm长 )钨酸铅晶体抗辐照性能的评估和测量方法 .研究了晶体在侧面辐照条件下对光产额及纵向发光均匀性的影响 ,给出了对几种晶体的测量结果
Large Hadron Collider (LHC) has a high radiation background during operation. In order to achieve the required measurement accuracy of the electromagnetic energy meter, the anti-irradiation performance of the lead tungstate crystal under development is very high. In this paper, the evaluation and measurement methods of several full-size (2 3cm long) lead tungstate crystals irradiated by 60Co γ-rays at different irradiation dose rates are described in this paper. Under the condition of lateral irradiation, the influence on the light yield and the vertical luminescence uniformity is given. The measurement results of several kinds of crystals