XP2020 Datasheet | Photonis

photomultiplier tubes product specification Standard very fast, 12-stage, 51 mm (2") round tube Applications : High and medium energy physics where the number of photons to be detected is very low and where utmost time characteristics are required. This tube Features a good linearity, a very low background noise and extremely good time characteristics and good single electron spectrum Window : Material : borosilicate glass Photocathode : bi-alkali Refr. index at 420 nm : 1.48 Structure : linear focused Nb of stages : 12 240 g Description : .. Multiplier : Mass : Photocathode characteristics Spectral range : Maximum sensitivity at : Sensitivity - : † Luminous : Blue : Radiant, at 420 nm : min : 7.5 typ : typ : 290-650 420 70 10 80 nm nm µA/lm µA/lm F m A/W Characteristics with voltage divider A Gain slope (vs supp. volt., log/log) † † † For a gain of : Supply voltage : Anode dark current ‚: Background noise ƒ : Single electron spectrum „ : resolution peak to valley ratio Pulse amplitude resolution for 137 Cs … : Gain halved for a magnetic field of : perpendicular to axis "n" : parallel with axis "n" : max: min : max: max : 2600 1750 100 2500 typ: typ : typ: typ: typ. 9 3 x 10 7 2000 10 900 70 2.5 7.2 0.15 0.12 V n A c/s % % m T m T Characteristics with voltage divider C † : 2800 4.0 x 106 280 1.7 2.7 28 7 2000 3.0 x 107 25 1.6 3.7 ns V m A ns ns ns p F p F For a supply voltage of 2500 Gain 4.0 x 107 Linearity (2%) of an. current up to : 70 Anode pulse ‡ Rise time : 1.5 Duration at half height : 2.4 Transit Time 30 31 Transit Time Spread Standard deviation : .25 Capacitances anode to all grid to K + D1 + D5 : PAGE 1/3 08/09/98 ABCDE photomultiplier tubes product specification Remended voltage divider Type A for maximum gain K G D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 A 1.2 2.8 1.2 1.8 1 1 1 1 1 1 1 1 1 1 (total :17) Type B for best timing / linearity promise K G D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 A 1.2 2.8...