CAJ | 학술논문

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Y2O3的钨酸铅晶体光产额很高(>13pe/MeV),且全为100ns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.
본문보도료아문채용개진적Bridgman법위구주핵자연구중심(CERN)대형강자대당궤(LHC)상적긴주형μ자라선관(CMS)실험생장적대척촌참Y3+오산연섬삭정체,급출료정체적광학화섬삭성능,여광치발광보、X사선치발광광보、종/횡향적투사광보、광산액이급복조경도.측시결과표명,참Y2O3적오산연정체광산액흔고(>13pe/MeV),차전위100ns이내적쾌발광,기복조경도이접근CMS전자량능기(ECAL)단모정체적요구,동일비정체피차간적성능일치성호.
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.