PHOTOMULTIPLIER TUBES R928, R955 Extended Red, High Sensitivity, Multialkali Photocathode 28 mm (1-1/8 Inch) Diameter, 9-Stage, Side-On Type The R928 and R955 feature extremely high quantum efficiency, high current amplification, good S/N ratio and wide spectral response from UV to near infrared. The R928 employs a UV glass envelope and the R955 has a fused silica envelope for UV sensitivity extension. The R928 and R955 are well suited for use in broad-band spectrophotometers, atomic absorption spectrophotometers, emission spectrophotometers and other precision photometric instruments. FEATURES ●Wide Spectral Response R928 ..................................................... 185 nm to 900 nm R955 ..................................................... 160 nm to 900 nm ●High Cathode Sensitivity Luminous ......................................................... 250 µA/lm Radiant at 400 nm ............................................. 74 mA/W ●High Anode Sensitivity (at 1000 V) Luminous ......................................................... 2500 A/lm Radiant at 400 nm ..................................... 7.4 × 105 A/W ●Low Drift and Hysteresis Figure 1: Typical Spectral Response SPECIFICATIONS 100 GENERAL R955 Unit nm nm nm — mm — — — — — pF pF — g °C °C — — CATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%) Parameter Description/Value R928 185 to 900 Spectral R955 160 to 900 Response 400 Wavelength of Maximum Response MateriaI Multialkali Photocathode Minimum Effective Area 8 × 24 R928 UV glass Window R955 Fused silica Material Multialkali Secondary Emitting Surface Circular-cage Structure Dynode 9 Number of Stages 4 Direct Interelectrode Anode to Last Dynode 6 Anode to All Other Electrodes Capacitances Base 11-pin base JEDEC No. B11-88 Weight Approx. 45 Operating Ambient Temperature -30 to +50 Storage Temperature -30 to +50 SuitabIe Socket E678–11A (Sold Separately) E717–63 (Sold Separately) SuitabIe Socket Assembly E717–74 (Sold Separately) TPMSB0001EB 10 CATHODE RADIANT SENSITIVITY R928 QUANTUM EFFICIENCY 1 0.1 0.01 100 200 300 400 500 600 700 800 900 1000 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 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. ©2006 Hamamatsu Photonics K.K. PHOTOMULTIPLIER TUBES R928, R955 MAXIMUM RATINGS (Absolute Maximum Values) Parameter Between Anode and Cathode Supply Voltage Between Anode and Last Dynode Average Anode Current A Value 1250 250 0.1 Unit V V mA CHARACTERISTlCS (at 25 °C) Parameter Min. Quantum Efficiency (at Peak Wavelength) Luminous B at 194 nm at 254 nm Radiant at 400 nm at 633 nm at 852 nm Red/White Ratio C Blue Sensitivity Index D Luminous E at 194 nm at 254 nm Radiant at 400 nm at 633 nm at 852 nm Cathode Sensitivity Anode Sensitivity — 140 — — — — — 0.2 — 400 — — — — — — — — — — — — — Gain E Anode Dark Current F (After 30 min Storage in Darkness) ENI (Equivalent Noise Input) H Anode Pulse Rise Time I E Time Response Electron Transit Time J Transit Time Spread (TTS) K Light Hysteresis Anode Current Stability L Voltage Hysteresis R928 Typ. 25.4 (at 260 nm) 250 18 52 74 41 3.5 0.3 8 2500 1.8 × 105 5.2 × 105 7.4 × 105 4.1 × 105 3.5 × 104 1.0 × 107 3 1.3 × 10-16 2.2 22 1.2 0.1 1.0 Max. Min. — — — — — — — — — — — — — — — — — 50 — — — — — — 140 — — — — — 0.2 — 400 — — — — — — — — — — — — — R955 Typ. 29.0 (at 220 nm) 250 43 56 74 41 3.5 0.3 8 2500 4.3 × 105 5.6 × 105 7.4 × 105 4.1 × 105 3.5 × 104 1.0 × 107 3 1.3 × 10-16 2.2 22 1.2 0.1 1.0 Max. Unit — % — — — — — — — — — — — — — — — 50 — — — — — — µA/lm mA/W mA/W mA/W mA/W mA/W — — A/lm A/W A/W A/W A/W A/W — nA W ns ns ns % % 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 V 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(Toshiba R-68) 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 condition as Note B. E: Measured with the same light source as Note B and with the voltage distribution ratio shown in Table 1 below. Table 1:Voltage Distribution Ratio Electrode Distribution Ratio K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 1 1 1 1 1 SuppIy Voltage: 1000 V, K: Cathode, 1 1 1 Dy: Dynode, 1 P 1 P: Anode F: Measured with the same supply voltage and voltage distribution ratio as Note E after removal of light. G:Measured at a supply voltage adjusted to provide an anode sensitivity of 100 A/lm. H: 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. ENI = 2q.ldb.G.∆f S where q = Electronic charge (1.60 × 10-19 coulomb). ldb = Anode dark current(after 30 minute storage) in amperes. G = Gain. ∆f = Bandwidth of the system in hertz. 1 hertz is used. S = Anode radiant sensitivity in amperes per watt at the wavelength of peak response. I: 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. 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: Also called transit time jitter. This is the fluctuation in electron transit time between individual pulses in the signal photoelectron mode, and may be defined as the FWHM of the frequency distribution of electron transit times. ANODE CURRENT L: Hysteresis is temporary instability in anode current after light and voltage are applied. l max. li l min. (2)Voltage Hysteresis The tube is operated at 300 V with an anode current of 0.1 µA for 5 minutes. The light is then removed from the tube and the supply voltage is quickly increased to 800 V. After a minute, the supply voltage is then reduced to the previous value and the tube is re-illuminated for a minute to measure the variation. TIME 5 0 6 7 (minutes) TPMSB0002EA lmax. Hysteresis = lmin. li × 100 (%) Figure 2: Anode Luminous Sensitivity and Gain Characteristics 105 (1)Light Hysteresis The tube is operated at 750 V with an anode current of 1 µA for 5 minutes. The light is then removed from the tube for a minute. The tube is then re-illuminated by the previous light level for a minute to measure the variation. TPMSB0003ED Figure 3: Typical Time Response 100 108 TPMSB0004EC 80 60 107 40 TRANS IT TIME 103 106 105 TIME (ns) TYPICAL ANODE SENSITIVITY 102 20 GAIN ANODE LUMINOUS SENSITIVITY (A/lm) TYPICAL GAIN 104 10 8 6 101 MINIMUM ANODE SENSITIVITY 104 4 RISE T IME 100 103 10-1 500 700 2 102 1500 1000 1 500 700 1000 1500 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) Figure 4: Typical Temperature Coefficient of Anode Sensitivity Figure 5: Typical Temperature Characteristic of Dark Current (at 1000 V, after 30 min storage in darkness) TPMSB0005EB TPMSB0006EB 100 160 800 nm 140 ANODE DARK CURRENT (nA) 600 nm ANODE SENSITIVITY (%) 120 100 400 nm 80 60 40 10 1 0.1 20 0 -30 -20 -10 0 +10 +20 +30 +40 TEMPERATURE (°C) +50 0.01 -30 -20 -10 0 +10 +20 +30 +40 TEMPERATURE (°C) +50 PHOTOMULTIPLIER TUBES R928, R955 Figure 6: Dimensional Outline and Basing Diagram (Unit: mm) 28.5 ± 1.5 Figure 7: Socket (Unit: mm) Sold Separately E678-11A 8 MIN. 49 38 PHOTOCATHODE DY6 6 7 80 MAX. DY7 8 DY8 DY3 3 94 MAX. DY2 9 DY9 2 5 10 P 1 11 29 K DY1 4 DIRECTION OF LIGHT 18 49.0 ± 2.5 24 MIN. DY4 4 33 5 3.5 DY5 Bottom View (Basing Diagram) 32.2 ± 0.5 11 PIN BASE JEDEC No. B11-88 TPMSA0008EA TACCA0064EA Figure 8: D Type Socket Assembly (Unit: mm) Sold Separately E717-63 E717-74 HOUSING (INSULATOR) 10 P 38.0 ± 0.3 DY8 49.0 ± 0.3 C2 7 DY6 6 DY9 26.0±0.2 TOP VIEW 4 DY3 3 DY2 2 DY1 K 1 2 2.7 0.7 DY4 A G R4 HOUSING (INSULATOR) POTTING COMPOUND 22.4±0.2 K ° 10 R2 30° -HV AWG22 (VIOLET) DY7 7 C1 DY6 6 DY5 5 DY4 4 DY3 3 DY2 2 DY1 K 1 R6 R5 R1 to R10 : 330 kΩ C1 to C3 : 10 nF R3 0.7 R1 11 C2 R8 8 R4 SIDE VIEW R3 C3 R9 R7 7 4 5 R1 to R10 : 330 kΩ C1 to C3 : 10 nF R5 31.0 ± 0.5 DY8 R10 9 32.0±0.5 C1 R7 R6 SIGNAL OUTPUT (A) GND (G) 10 8 DY7 DY5 30.0 +0 -1 C3 R9 SOCKET PIN No. P 9 R8 29.0 ± 0.3 450 ± 10 R10 PMT 14.0±0.5 DY9 SIGNAL GND SIGNAL OUTPUT RG-174/U(BLACK) POWER SUPPLY GND AWG22 (BLACK) 26.0±0.2 SOCKET PIN No. 32.0±0.5 PMT 3.5 33.0 ± 0.3 5 R2 R1 11 -HV (K) 4- 2.8 R13 * "Wiring diagram applies when -HV is supplied." To supply +HV,connect the pin "G" to+HV, and the pin "K" to the GND. BOTTOM VIEW TACCA0002EH TACCA0277EA * Hamamatsu also provides C4900 series compact high voltage power supplies and C6270 series DP type socket assemblies which incorporate a DC to DC converter type high voltage power supply. Warning–Personal Safety Hazards Electrical Shock–Operating voltages applied to this device present a shock hazard. WEB SITE www.hamamatsu.com HAMAMATSU PHOTONICS K.K., Electron Tube Division 314-5, Shimokanzo, Iwata City, Shizuoka Pref., 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 E-mail: [email protected] Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658 E-mail: [email protected] France: Hamamatsu Photonics France S.A.R.L.: 19, 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 E-mail: [email protected] United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road Welwyn Garden City Hertfordshire AL7 1BW, United Kingdom, Telephone: 44-(0)1707-294888, Fax: 44(0)1707-325777 E-mail: [email protected] North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171-41 SOLNA, Sweden, Telephone: (46)8-509-031-00, Fax: (46)8-509-031-01 E-mail: [email protected] 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 E-mail: [email protected] TPMS1001E07 JUL. 2006. 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