【摘要】 本文报道了我们采用改进的Bridgman法为欧洲核子研究中心 (CERN)大型强子对撞机 (LHC)上的紧凑型 μ子螺线管 (CMS)实验生长的大尺寸掺Y3 + 钨酸铅闪烁晶体 ,给出了晶体的光学和闪烁性能 ,如光致发光谱、X射线致发光光谱、纵 /横向的透射光谱、光产额以及辐照硬度。测试结果表明 ,掺Y2 O3 的钨酸铅晶体光产额很高 (>13pe/MeV) ,且全为 10 0ns以内的快发光 ,其辐照硬度已接近CMS电磁量能器 (ECAL)端帽晶体的要求 ,同一批晶体彼此间的性能一致性好。更多还原

【Abstract】 In this paper, we presented the study of large-size Y³⁺-doped PbWO₄ crystal grown using a modified Bridgman method for the CMS experiment at the Large Hadron Collider at CERN. The optical and scintillation properties of the crystal were given, including photo-luminescence and X-ray stimulated luminescence spectra, longitudinal and transverse transmittance spectra, light yield, and radiation hardness. The measurement results indicate that the crystal has very highlight yield values （>13 pe/MeV）, fast scintillation within 100ns, and the radiation hardness close to the need for CMS-ECAL End Cap crystals. A good consistency is shown among the same batch of crystals.更多还原