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| PHOTOMULTIPLIER TUBES R331, R331-05 For Liquid Scintillation Counting Bialkali Photocathode, 51mm (2 Inch) Diameter, 12 Stages, Head-On Type The R331 and the R331-05 are 51mm (2 Inch) diameter series photomultiplier tubes specifically developed for the liquid scintillation counting. They feature low background noise, high tritium efficiency, good linearity and high gain. The R331 uses a synthetic silica input window and the R331-05 uses a low K content borosilicate glass input window, both with a frosted surface and convex-concave shape. They offer minimized glass scintillations and high collection efficiency. FEATURES Tritium efficiency in tritium window................................ 60% Typ. Background noise in tritium window...............16cpm Typ. (R331) 18cpm Typ. (R331-05) Tritium end point (T.E.P.) voltage.................................. 1700V Typ. Dark pulse summation at T.E.P. voltage.............. 3 x 104cpm Max. Figure of merit (E2/B).......................................................... 200 Typ. GENERAL Parameter Spectral Response Wavelength of Maximum Response Photocathode Window Material Dynode Direct Material Minimum Useful Area Material Shape Structure Number of Stages Anode to Last Dynode R331 160 to 650 420 Bialkali R331-05 300 to 650 Unit nm nm -- CATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%) Figure 1: Typical Spectral Response TPMHB0505EA 100 R331 CATHODE RADIANT SENSITIVITY mm dia. 46 Synthetic silica Low K content -- borosilicate (Frosted) glass (Frosted) -- Concave-Convex Linear focused 12 2 2.5 21-pin glass base 151 E678-21A (Supplied) -- -- pF pF -- g -- 10 R331-05 1 QUANTUM EFFICIENCY Interelectrode Anode to All Other Capacitances Electrodes Base Weight Suitable Socket 0.1 0.01 200 400 600 800 WAVELENGTH (nm) Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office. Information furnished by HAMAMATS U is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. (c) 1998 Hamamatsu Photonics K.K. PHOTOMULTIPLIER TUBES R331, R331-05 MAXIMUM RATINGS (Absolute Maximum Values) Parameter Supply Voltage Between Anode and Cathode Between Anode and Last Dynode Value 2500 500 0.2 -80 to +50 Unit Vdc Vdc mA C NOTES A: Averaged over any interval of 30 seconds maximum and the whole photocathode is illuminated. B: The light source is a tungsten filament lamp operated at a distribution temperature of 2856K. The light input is 0.01 lm and 150 volts are applied between the cathode and all other electrodes connected together as anode. C: The value is cathode output current when a blue filter (Corning CS 5-58 polished to 1/2 stock thickness) is interposed between the light source and the tube under the same condition as Note B. D: Measured with the same light source as Note B and the light input is 0.1lm. The anode-to-cathode supply voltage and voltage distribution ratio are shown in Table 1. E: Background noise after 30 minute storage in darkness. F: The rise time is the time for the output pulse to rise from 10% to 90% of the peak amplitude when the entire photocathode is illuminated by a delta function light pulse of 400nm. G: The electron transit time is the interval between the arrival of a delta function light pulse at the input window of the tube and the time when the output pulse reaches the peak amplitude. In measurement the entire photocathode is illuminated. Average Anode Current A Ambient Temperature CHARACTERISTICS (at 25C) Parameter Luminous B Cathode Sensitivity Quantum Efficiency at 390nm Radiant at 420nm Blue Anode Sensitivity Gain D Anode Dark R331 Count E Time Response D R331-05 Anode Pulse Rise Time Electron Transit Time Transit Time Spread G H F C Min. 60 -- -- 9.0 30 -- -- -- -- -- -- -- Typ. 90 25 85 10.5 120 1.1 x 105 1.3 x 106 16 18 2.6 48 1.1 Max. -- -- -- -- -- -- -- -- -- -- -- -- Unit A/lm % mA/W A/lm-b A/lm A/W -- cpm cpm ns ns ns Luminous D Radiant at 420nm H: Also called transit time jitter. This is the fluctuation in electron transit time between individual pulses in the single photoelectron state, and may be defined as the FWHM of the frequency distribution of the transit times. Table 1: Voltage Distribution Ratio K G Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11Dy12 P Electrodes 4 0 1 1.4 1 1 1 1 1 1 1 1 1 1 Distribution Ratio Supply Voltage: 1500Vdc, K: Cathode, Dy: Dynode, P: Anode, G: Grid * Shield should be connected to Dy5. Figure 2: Typical Anode Luminous Sensitivity and Gain 105 TPMHB0506EA Figure 3: Typical Anode Output Wave form TPMHB0507EA 108 ANODE LUMINOUS SENSITIVITY (A/lm) 104 107 103 106 SE NS IT IV IT Y GA 102 105 GAIN IN (5mV/div) 100 AN OD E LU M 101 104 RISE TIME : 2.6ns FALL TIME : 9.7ns SUPPLY VOLTAGE: 1500V INPUT LIGHT WAVELENGTH: 400nm IN OU S 103 (5ns/div) 10-1 500 102 3000 700 1000 1400 2000 SUPPLY VOLTAGE (V) Figure 4: Typical Time Response TPMHB0508EA Figure 5: Typical Transit Time Spread TPMHB0510EA 200 SUPPLY VOLTAGE : 1500V FWHM : 1100ps INPUT LIGHT WAVELENGTH: 400nm 100 80 60 40 104 ELECT IT TIM RELATIVE COUNTS RON T RANS E 103 102 TIME (ns) 20 101 10 8 6 4 100 ANOD E PUL SE RIS E TIM E -10 -8 -6 -4 -2 0 2 4 6 8 10 2 TIME (ns) 1 500 700 1000 1400 2000 3000 SUPPLY VOLTAGE (V) PHOTOMULTIPLIER TUBES R331, R331-05 Figure 6: Dimensional Outline and Basing Diagram (Unit: mm) 53.0 1.5 FACEPLATE 46MIN. Socket (Supplied) (E678-21A) 51 19 PHOTOCATHODE 50 0.2 126 2 HA COATING R5 13MAX. SH IC DY10 DY8 IC 10 11 12 DY12 13 9 DY6 14 8 P7 15 DY4 DY11 6 16 DY2 17 G DY9 5 DY7 3 2 DY5 1 DY3 DY1 4 18 IC 19 20 IC 21 4 6 TACCA0011EA TPMHA0072EB K IC * Shield (SH) should be connected to Dy5. HAMAMATSU PHOTONICS K.K., Electoron Tube Center 314-5, Shimokanzo, Toyooka-village, Iwata-gun, Shizuoka-ken, 438-0193, Japan, Telephone: (81)539/62-5248, Fax: (81)539/62-2205 U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P. O. Box 6910, Bridgewater. N.J. 08807-0910, U.S.A., Telephone: (1)908-231-0960, Fax: (1)908-231-1218 Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658 France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: (33)1 69 53 71 00, Fax: (33)1 69 53 71 10 United Kingdom: Hamamatsu Photonics UK Limted: Lough Point, 2 Gladbeck Way, Windmill Hill, Enfield, Middlesex EN2 7JA, United Kingdom, Telephone: (44)181-367-3560, Fax: (44)181-367-6384 North Europe: Hamamatsu Photonics Norden AB: Farogatan 7, S-164-40 Kista Sweden, Telephone: (46)8-703-29-50, Fax: (46)8-750-58-95 Italy: Hamamatsu Photonics Italia: S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741 13 21 PIN BASE 5 56.8 TPMH1209E01 JUL. 1998 |
Price & Availability of R331
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