PHOTOSENSOR MODULE WITH THERMOELECTRIC COOLER H7844 Reduces dark current to 1/50 that at room temperature after only 3 minutes of cooling The H7844 is a photosensor module consisting of a newly developed high sensitivity side-on photomultiplier tube, a high-voltage power supply circuit and a thermoelectric cooler. Cooling is super-efficient in the H7844 because the thermoelectric cooler is directly coupled to the photocathode of the photomultiplier tube. This also drastically reduces thermal noise (thermal electrons) emitted from the photocathode to allow making accurate measurements with a high signal to noise ratio even at very low light levels. As a result of cooling, dark current reduces down to 1/50 at room temperature after only 3 minutes of cooling. Besides shorter cooling time and lower power consumption compared to conventional methods that cool the entire photomultiplier tube, the H7844 completely eliminates the problem of condensation during cooling. SPECIFICATIONS Parameter Anode Cathode Input Voltage Max. Input Voltage for Main Unit Max. Input Current for Main Unit Max. Input Voltage for Thermoelectric Cooler Max. Input Current for Thermoelectric Cooler Max. Output Signal Current *1 Max. Control Voltage Recommended Control Voltage Adjustment Range Effective Area Spectral Response Range Peak Sensitivity Wavelength Min. Luminous Sensitivity Typ. Blue Sensitivity Index (CS 5-58) Typ. Radiant Sensitivity *2 Typ. Min. Luminous Sensitivity *1 Typ. Radiant Sensitivity *1 *2 Typ. Gain *1 Typ. Typ. 1 3 Dark Current * * Max. Equivalent Noise Input (ENI) *1 *2 *3 Rise Time *1 Max. Ripple Noise *1 *4 (peak to peak) Settling Time *5 Operating Ambient Temperature *6 Storage Temperature *6 Weight Value +11.5 to +15.5 +18 40 3.75 3.9 58 +1.2 (Input impedance: 100 kΩ) +0.3 to +1.1 9 × 14 185 to 900 400 140 300 9.0 76 400 3000 7.6 × 105 1.0 × 107 0.1 0.5 2.4 × 10-17 2.2 0.5 0.2 +5 to +40 -20 to +50 290 (at 25 °C) Unit V V mA V A µA V V mm nm nm µA/lm — mA/W A/lm A/W — nA W ns mV s °C °C g *1: Control voltage +1.0 V (PMT supply voltage -1000 V), with cooler operated *2: At peak sensitivity wavelength *3: After 30 minutes storage in darkness *4: Signal cable RG-174/U, Cable length 450 mm, Load resistance 1 MΩ, Load capacitance 22 pF *5: The time required for the output to reach a stable level following a change in the control voltage from +1.0 V to +0.5 V. *6: No condensation 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. ©2005 Hamamatsu Photonics K.K. PHOTOSENSOR MODULE WITH THERMOELECTRIC COOLER H7844 COOLING SPECIFICATIONS Description / Value Thermoelectric cooling 20 Approx. 3 Parameter Cooling Method Max. Cooling Temperature (∆T) *7 *8 Cooling Time *7 *7: Input current to thermoelectric cooler = 2.1 A Unit — °C min *8: Photocathode temperature difference from ambient CHARACTERISTICS ●Spectral Response ● Anode dark current after cooling has started (at 25 °C) TPMOB0180EA 100 10 (at 25 °C) TPMOB0181EA 10 ANODE DARK CURRENT (nA) CATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%) CONTROL VOLTAGE: +1.0 V (PMT SUPPLY VOLTAGE: -1000 V) QUANTUM EFFICIENCY CATHODE RADIANT SENSITIVITY 1 0.1 1 0.1 0.01 0.01 100 200 300 400 500 600 700 800 900 1000 0 1 2 ●Equivalent Noise Input (ENI) ●Gain vs. Control Voltage (at 25 °C) TPMOB0182EA 109 CONTROL VOLTAGE: +1.0 V (PMT SUPPLY VOLTAGE: -1000 V) BAND WIDTH: 1 Hz WITH COOLER OPERATED (at 25 °C) TPMOB0183EA WITH COOLER OPERATED 108 10-14 107 106 GAIN EQUIVALENT NOISE INPUT (W) 5 4 TIME (min) WAVELENGTH (nm) 10-13 3 10-15 105 104 10-16 103 10-17 200 300 400 500 600 700 800 WAVELENGTH (nm) 900 1000 102 0.3 0.4 0.5 0.6 0.7 0.8 1.0 CONTROL VOLTAGE (V) 1.2 1.5 SENSITIVITY ADJUSTMENT AND COOLING OPERATION VOLTAGE PROGRAMMING POWER SUPPLY for COOLING FAN +12 V BNC-R GND COAXIAL CABLE (CURRENT OUTPUT) THERMOELECTRIC COOLER (ORANGE) GND (GREEN) +3.2 V 2 A to 2.8 A POWER SUPPLY +11.5 V to +15.5 V GND LOW VOLTAGE INPUT (RED) GND (BLACK) Vref OUTPUT +1.2 V (BLUE) Vcont INPUT (WHITE) GND POWER SUPPLY for THERMOELECTRIC COOLER +0.3 V to +1.1 V GND POWER SUPPLY for Vcont • Adjust the control voltage when adjusting the anode sensitivity or gain of the PMT. • Electrically isolate the reference voltage output. (This output is not used.) • Low voltage input can also be used to supply the power to the cooling fan. In this case, the low voltage input must be set to +12 V. • Always run the cooling fan while the thermoelectric cooler is operating. RESISTANCE PROGRAMMING POWER SUPPLY for COOLING FAN +12 V BNC-R GND COAXIAL CABLE (CURRENT OUTPUT) THERMOELECTRIC COOLER (ORANGE) GND (GREEN) +3.2 V 2 A to 2.8 A POWER SUPPLY +11.5 V to +15.5 V GND CW LOW VOLTAGE INPUT (RED) GND (BLACK) Vref OUTPUT +1.2 V (BLUE) Vcont INPUT (WHITE) GND POWER SUPPLY for THERMOELECTRIC COOLER • Monitor the control voltage when adjusting the anode sensitivity or gain of the PMT with a trimmer potentiometer. MONITOR POTENTIOMETER (10 kΩ) • We are currently developing a new integrated power supply that simultaneously supplies power for the photomultiplier tube, thermoelectric cooler and cooling fan. Please contact our sales office for more information. TPMOC0189EA PHOTOSENSOR MODULE WITH THERMOELECTRIC COOLER H7844 DIMENSIONAL OUTLINE (Unit: mm) CONNECTOR FOR COOLING FAN 48.0 44.5 COOLING FAN * 21.0 52.0 6.8±0.3 * When installing the H7844 photosensor module, be sure to allow enough space around the cooling fan for heat dissipation. WINDOW TOP VIEW EFFECTIVE AREA (9 × 14) PHOTOCATHODE 33.0 MOUNTING THREADED HOLE (2 × 4-M3 DEPTH 3) 7.7 RECEPTACLE FOR THERMOELECTRIC COOLER JST SLR-02VF L=60±10 8.0 15.5 23.0 87.0 77.0 33.5 2.6 106.0 51.2 7.4 30.6 5.0 9.0 20.0 20.0±0.3 POWER INPUT HIROSE HR10A-7R-6P 1 6 2 38.0 MOUNTING THREADED HOLE (4-M3 DEPTH 3) 32.0 FRONT VIEW 63.0 SIDE VIEW SIGNAL OUTPUT BNC-R REAR VIEW 5 3 4 1: GND 2: LOW VOLTAGE INPUT +15 V 3: Vcont +0.3 V to +1.1 V 4: Vref 5: GND 6: NC Power cable with connector (HIROSE HR10A-7P-6S) is supplied with the H7844. 600 ± 20 42.0 BOTTOM VIEW MOUNTING THREADED HOLE (4-M3 DEPTH 10) BLACK : GND RED : LOW VOLTAGE INPUT (+11.5 to +15.5 V) WHITE : Vcont INPUT (+0.3 V to +1.1 V) BLUE : Vref OUTPUT (+1.2 V) Thermoelectric cooler cable (AMP 179228-3) is supplied with the H7844 *Dimensional tolerance is ±0.5 mm unless otherwise specified. GND : AWG18 (GREEN) 600 ± 20 THERMOELECTRIC COOLER : AWG18 (ORANGE, +3.2 V, 2 A to 2.8 A) Cooling fan lead wire (JST SLP-02V) is supplied with the H7844 FAN : AWG24 (RED, +12 V) GND: AWG24 (BLACK) 600 ± 20 TPMOA0036EA WEB SITE http://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.: 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 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] TPMO1032E01 JUN. 2005. 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