探测器原型的物理与测量

Title,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,探测器原型的物理与测量,Continued,Sep. 15, 2005,天然放射性,PMT,玻璃的放射性,假定为,1,1,1,ppm,，45,个,PMT,的放射性为 (,scaled from DYB simulation),U:,11 Hz,(1MeV) Th:,4 Hz,(1MeV) K:,37 Hz,(1MeV),Cut 0.5MeV，rates double!,PMT,玻璃本底:,10,Hz,(Super-K,玻璃) 或,41,Hz,(Hamamatsu),2,Radon,北京地铁内氡气浓度,1748,Bq/m,3,新建住房氡气浓度的国家控制标准：,1,MeV):,62 per 100 decays,; Mean E=1.5 MeV,Photon Mass Attenuation coefficients,(,PDG Fig 27.15 and ref. therein,),1/(/) (cm,2,/g),1 MeV,1.5,MeV,4,MeV,Air (Dry),15.7,19.3,32.5,Iron,16.7,20.5,30.2,Water/Liquid,14.1,17.4,29.4,Oil: 0.85 g/cm,3,Air 1.29E-3 g/cm,3,2100,Bq,Radon Backgrounds: 2100 Bq*0.62*0.06 =,78 Hz,14,Bq/m,3,4,其它参数,内罐半径0.45米，高1米，,0.51 吨,（假定0.8,g/cm,3,),45,PMT，,150,p.e./,MeV,，,能量精度,10%1,MeV,10,MeV,平均,33,p.e./PMT,1,MeV,点源，跟,PMT 110 cm ,2 p.e.,10,MeV,点源，距,PMT 20 cm,Max: 640 p.e.,45,cm gamma catcher，,距,PMT 65 cm,Max: 60 p.e.,Shower,Muon,:,假定 400,MeV,1400 p.e./PMT,5,n(Gd) capture,放射源在正中间,均匀的中子,6,