R2949

R2949 HAMAMATSU | Alldatasheet

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Parameter Description/ValueUnit Spectral Response Wavelength of Maximum Response Photocathode Window Material Dynode Direct Interelectrode Capacitances Base Weight Suitable Socket (Option) Suitable Socket Assembly (Option) nm nm mm pF pF g 185 to 900 400 Multialkali 8 × 6 UV glass Multialkali Circular-cage Approx. 4 Approx. 6 11-pin base JEDEC No. B11-88 Approx. 45 E678-11A E717-21 Material Minimum Useful Size Secondary Emitting Surface Structure Number of Stages Anode to Last Dynode Anode to All Other Electrodes PHOTOMULTIPLIER TUBE R2949 (Low Dark Counts Type of R928) Information furnished by HAMAMATSU 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. © 1998 Hamamatsu Photonics K.K. Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office. Modified R928, 8 × 6mm Photocathode Area Size Low Dark Counts, Extended Red Multialkali, High Sensitivity For Photon Counting Applications Figure 1: Typical Spectral Response TPMSB0155EA The R2949 is a 28mm (1-1/8 inch) diameter, 9-stage, side-on type pho- tomultiplier tube having the same extended red multialkali photo- cathode as the R928. The R2949 features very low dark counts, extremely high quantum efficiency, high gain, good S/N ratio and wide spectral response from UV to near infrared. The R2949 is well suited for use in various low-level photometries such as general single photon counting applications and fluorescence life time measurement. The R2949 is directly interchangeable with the R928. High Cathode Sensitivity High Anode Sensitivity (at 1000V) 5A/W Low Drift and Hysteresis 100 0.1 0.01 200 400 600 800 1000 WAVELENGTH (nm) CATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%) CATHODE RADIANT SENSITIVITY QUANTUM EFFICIENCY

MAXIMUM RATINGS (Absolute Maximum Values at 25°C) Parameter Value Unit Supply Voltage Average Anode Current A Ambient Temperature Vdc Vdc mA 1250 250 0.1 -80 to +50 Between Anode and Cathode Between Anode and Last Dynode PHOTOMULTIPLIER TUBE R2949 CHARACTERISTICS (at 25 °C) Table 1: Voltage Distribution Ratio Parameter Min. Unit Cathode Sensitivity Anode Sensitivity Gain E Anode Dark Counts F Anode Dark Current F ENI (Equivalent Noise Input) G Time Response E Anode Current Stability K µA/lm mA/W mA/W mA/W mA/W mA/W µA/lm-b A/lm A/W A/W A/W A/W A/W cps cps nA W ns ns 140 0.1 1000 Max. 500 Typ. 25.3 200 3.5 0.3 7.5 2000 1.8 × 10 5.2 × 105 6.8 × 105 4.1 × 105 3.5 × 104 1.0 × 107 300 1.2 × 10 -16 2.2 0.1 1.0 Quantum Efficiency Luminous B Radiant Red/White Ratio C with R-68 Filter Blue D Luminous E Radiant Anode Pulse Rise Time H Electron Transit Time J Current Hysteresis Voltage Hysteresis at 255nm at 194nm at 254nm at 400nm at 633nm at 852nm at 194nm at 254nm at 400nm at 633nm at 852nm at +25°C at -20°C NOTES A: Averaged over any interval of 30 seconds maximum. B: The light source is a tungsten filament lamp operated at a distribution temperature of 2856K. Supply voltage is 100 volts between the cathode and all other electrodes connected together as anode. C: Red/white ratio is the quotient of the cathode current measured using a red filter interposed between the light source and the tube by the cathode current measured with the filter removed under the same conditions as Note B. D: 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 conditions as Note B. E: Measured with the same light source as Note B and with the anode-to-cathode supply voltage and voltage distribution ratio shown in Table 1. F: Measured with the same supply voltage and the voltage distribution ratio as Note E after 30 minute storage in the darkness. G: ENI is an indication of the photon limited signal-to-noise ratio. It refers to the amount of light in watts to produce a signal-to-noise ratio of unity in the output of a photomultiplier tube. where q = Electronic charge (1.60 × 10 -19 coulomb) ldb = Anode dark current (after 30 minute storage) in darkness) in amperes G = Gain Δf = Bandwidth of the system in hertz. 1 hertz is used. S = Anode radiant sensitivity in amperes per watt at the wavelength of peak response. H: The rise time is the time for the output pulse to rise from 10% to 90% of the peak amplitude when the entire pho- tocathode is illuminated by a delta function light pulse. J: The electron transit time is the interval between the arrival of delta function light pulse at the entrance window of the tube and the time when the anode output reaches the peak amplitude. In measurement, the whole photocathode is illuminated. K. Hysteresis is temporary instability in anode current after light and voltage are applied. (1) Current Hysteresis The tube is operated at 750 volts with an anode current of 1 microampere for 5 minutes. The light is then removed from the tube for a minute. The tube is then re-illuminated at the previous light level for a minute to measure the variation. (2)Voltage Hysteresis The tube is operated at 300 volts with an anode current of 0.1 microampere for 5 minutes. The light is then removed from the tube and the supply voltage is quickly increased to 800 volts. After a minute, the supply voltage is reduced to the previous value and the tube is re-illuminated for a minute to measure the variation. Supply Voltage= 1000Vdc K: Cathode, Dy: Dynode, P: Anode Electrodes Distribution Ratio K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 P ENI = 2q•ldb•G•Δf S Hysteresis = × 100 (%) Imax. - Imin. Ij Imin.Ii Imax. ANODE CURRENT 05 67 (MINUTES) TIME

Figure 6: Single Photon Pulse Height Distribution Figure 7: Dimensional Outline and Basing Diagram (Unit: mm) TPMS1045E01 JUN. 1998 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 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: Färögatan 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.: Via Della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)2-935 81 733, Fax: (39)2-935 81 741 TPMSB0160EA TACCA0064EA TACCA0002ED TPMSA0016EA Figure 8: Optional Accessories (Unit: mm) E678-11A (Socket) D Type Socket Assembly E717-21 PHOTOMULTIPLIER TUBE R2949 3.5 418 POTTING COMPOUND R to R10 C1 to C3 : 330kΩ : 0.01µF 3.5 33.0 ± 0.3 49.0 ± 0.3 38.0 ± 0.3 4.8 L450 ± 10 31.0 ± 0.5 HOUSING (INSULATOR) R10 DY9 DY8 DY7 DY6 DY5 DY4 DY3 DY2 DY1 SIGNAL GND SIGNAL OUTPUT RG-174/U (BLACK) -HV AWG22 (VIOLET) P K POWER SUPPLY GND AWG22 (BLACK) SOCKET PIN No.PMT Warning-Personal Safety Hazards Electrical Shock — Operating voltage applied to this device presents shock hazard. * Hamamatsu also provides C4900 series modular type high voltage power supplies and C6270 series DP type socket assemblies which incorporate a DC to DC converter type high voltage power supply. 5 76 KDY1 DY2 DY3 DY4 DY5 DY6 DY7 DY8 DY9 P DIRECTION OF LIGHT 29.0 ± 1.7 8MIN. PHOTOCATHODE 6MIN. 49 ± 1 80MAX. 94MAX. 7MIN. INSULATION COVER 32.2 ± 0.5

11 PIN BASE

JEDEC No. B11-88 104 7.5 × 103 5.0 × 103 2.5 × 103 0 512 PULSE HEIGHT (Channel) COUNTS PER CHANNEL (cps)DARK SIGNAL + DARK AMBIENT TEMP. SUPPLY VOLTAGE* WAVELENGTH OF INCIDENT LIGHT DARK COUNTS : 25°C : 730Vdc : 800nm : 300cps DISCRIMINATION LEVEL * The supply voltage is set at gain to be 1 × 10