photomultiplier xp2020/ur 07/08/2007 100 200 300 400 500 600 700 800 0,1 1 10 100 sk (ma/w) wavelength (nm) 1500 2000 2500 3000 3500 1e+4 1e+5 1e+6 1e+7 1e+8 gain vht(v) a c recommended voltage divider type a for maximum gain k g d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 a 2 8 2 1.5 1 1 1 1 1 1 1 1 1 1 (total : 23.5) type c for linearity k g d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 a 2 8 2 1.5 1 1 1 1 1 1 1.5 1.5 3 2.5 (total : 28) * characteristic measured and mentioned on the test ticket of each tube description window material photocathode refr. index at 420nm multiplier structure borosilicate glass bi-alkali 1.48 linear focused photocathode characteristics min typ max unit spectral range : maximum sensitivity at : 270-650 420 nm nm sensitivity : luminous : blue * : radiant, at 420nm 7.5 70 10 80 a/lm a/lmf ma/w characteristics with voltage divider a min typ max unit gain slope (vs supp. volt., log/log) 9 for a gain of 3x10 7 v supply voltage * 2200 3000 3200 v anode dark current * 20 100 na background noise * single electron spectrum resolution peak to valley ratio pulse amplitude resolution for 137 cs 15000 70 2.5 7.2 25000 cps % % gain halved for a magnetic field of : perpendicular to axis "n" : parallel to axis "n" : 0.15 0.12 mt mt for a supply voltage of : 3000v min typ max unit linearity (2%) of anode current up to : 25 ma anode pulse : rise time : duration at half height : transit time : 1.6 3.7 27 ns ns ns 12-stage 51mm (2"), round tube typical gain curve application energy physics features very fast good linearity high gain typical spectral
photomultiplier xp2020/ur 07/08/2007 outline (dimensions in mm) limiting values min max unit anode luminous sensitivity 10 8 supply voltage 3300 v continuous anode current 0.2 ma voltage between : g and photocathode : first dynode and pk : consecutive dynode (except 11 & 12) : dynodes d11 and d12 : anode and d12: 600 80 300 1400 400 600 700 v v v v v ambient temperature : short operation (<30 mn) : continuous operation & storage : -30 -30 +80 +50 c c variants xp2020/ur finishing f with flying leads ? 0.5 fb with flying leads and plastic base also, other variants can be made. please, contact us to discuss any specific product requirements. k: cathode dn: dynode a: anode nc: not connected sp: short pin ic: internal connection nc: not conne cted ct: coating g: focusing electrode n: plane of symetry of the mu ltiplier mass : 240g accessories : socket : fe1120 mu-metal shield : ms172 voltage divider : vd124k/t
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