Hamamatsu PMT tests L Classen O Kalekin J
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Hamamatsu PMT tests L. Classen, O. Kalekin. J. Reubelt KM 3 Ne. T Meeting Catania, 20. 02. 2012
R 6233 MOD PMTs 53 PMTs delivered and tested Results on QE, TTS and gain measurements are presented Quantum efficiency O. Kalekin, Hamamatsu PMT tests, KM 3 Ne. T Meeting, Catania, 20. 02. 2012
R 6233 MOD PMTs Gain HV for gain 5 x 106 O. Kalekin, Hamamatsu PMT tests, KM 3 Ne. T Meeting, Catania, 20. 02. 2012
R 6233 MOD PMTs Dark rate O. Kalekin, Hamamatsu PMT tests, KM 3 Ne. T Meeting, Catania, 20. 02. 2012
R 6233 MOD PMTs Transit time spread O. Kalekin, Hamamatsu PMT tests, KM 3 Ne. T Meeting, Catania, 20. 02. 2012
R 12199 PMTs 3 PMTs delivered and tested 80 mm diameter, new dynode structure – faster O. Kalekin, Hamamatsu PMT tests, KM 3 Ne. T Meeting, Catania, 20. 02. 2012
R 12199 PMTs Serial Number Voltage, V @ 5 e 6 gain TTS, ns FWHM Dark counts k. Hz ZB 5618 1160 6. 33 x 106 4. 128 4. 16 1. 4 0. 42 ZB 5619 1170 6. 53 x 106 4. 011 4. 54 2. 3 1. 35 ZB 5626 1170 6. 36 x 106 4. 279 4. 47 1. 2 0. 53 Black – Hamamatsu Blue – ECAP O. Kalekin, Hamamatsu PMT tests, KM 3 Ne. T Meeting, Catania, 20. 02. 2012 25 o(? ) 20 o
R 12199 PMTs Quantum efficiency: Hamamatsu vs ECAP Discrepancies – stray light in monochromator (? ) O. Kalekin, Hamamatsu PMT tests, KM 3 Ne. T Meeting, Catania, 20. 02. 2012
R 12199 PMTs Quantum efficiency: R 12199 vs R 6233 MOD O. Kalekin, Hamamatsu PMT tests, KM 3 Ne. T Meeting, Catania, 20. 02. 2012
R 12199 PMTs Detection efficiency: R 12199 vs R 6233 MOD: same QE @ 470 nm ZB 5618 vs ZB 5048 & ZB 3525 Pulsed LED (470 nm) with diffuser, PMTs at 2. 5 m, #p. e. per pulse The same procedure for other two R 12199 Eff(R 12199)=0. 94 x. Eff(R 6233 mod) O. Kalekin, Hamamatsu PMT tests, KM 3 Ne. T Meeting, Catania, 20. 02. 2012
R 12199 PMTs Detection efficiency at 470 nm: R 12199 vs R 6233 MOD Collection efficiency 75% O. Kalekin, Hamamatsu PMT tests, KM 3 Ne. T Meeting, Catania, 20. 02. 2012 90%