R2486-02

POSITION-SENSITIVE PHOTOMULTIPLIER TUBES WITH CROSSED WIRE ANODES R2486 SERIES 3˝ Diameter Circular Envelope Position-Sensitive PMT with Crossed Wire Anodes For Nuclear Medical Instruments, High Energy Physics Experiments Introduction The R2486 series have a bialkali photocathode, a 12-stage coarse mesh dynode structure, and multiple anode wires crossing one another in the X and Y directions. Output signals from each anode can be divided through external resistive chains and derived from X and Y electrodes as the position signals. This crossed-wire anode construction features high spatial resolution, high position linearity, and easy signal processing for scintillation imaging. A 5-inch diameter type R3292 is also available. Applications GCompact Gamma Camera GAnimal PET GRadiation Imaging Voltage divider circuit and resistive chains for signal processing simplify connection to measuring instruments. The following versions are available to handle various applications. 1. R2486: Flying lead type (Fig. 9) 2. R2486-01: Provided with high-voltage divider circuit; enables direct reading of signals from each anode through an IC socket. (Fig. 10) 3. R2486-02: Provided with high-voltage divider circuit and resistive chains for signal processing, simplifying connection to external devices. (Fig. 11) 4. R2486-03: Variant type of R2486-02 having HA coating and µ-metal shielding. (Fig. 12) 5. R2486-04: Variant type of R2486-03 with the aluminum case. (Fig.13) The R2486 series enables the acquisition of 2-dimensional information with a single tube. Until now, the task of obtaining 2-dimensional information required the use of an arrangement of multiple PMTs. This approach was costly and required complex hardware. The R2486 series were developed as position-sensitive PMTs to enable this information acquisition with a single tube. 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. ©2001 Hamamatsu Photonics K.K. POSITION-SENSITIVE PHOTOMULTIPLIER TUBES R2486 SERIES GENERAL Parameter Spectral Response Wavelength of Maximum Response Photocathode Material Material Shape Window Thickness Index of Refraction at 420 nm Structure Dynode Number of Stages Anode Number of Wires Effective Area Description/Value 300 to 600 420 Bialkali Borosilicate glass Plano-plano 3.0 ± 0.3 1.5 Coarse mesh 12 16 (X) + 16 (Y) 50 Unit nm nm — — — mm — — — — mm 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 150 volts between the cathode and all other electrodes connected together as an anode. C: The value is cathode output current when a blue filter (Corning CS No. 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 with the anode-to-cathode supply voltage and voltage distribution ratio shown in Table 1. E: Measured with the same supply voltage and voltage distribution ratio as Note D at 30 minutes after removal of light. 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. G: The electron transit time is the interval between the arrival of a delta function light pulse at the entrance window of the tube and the time the output pulse reaches the peak amplitude. In measurement the entire photocathode is illuminated. H: In the case of R2486 MAXIMUM RATINGS Parameter Supply Voltage Between Anode and Cathode Average Anode Current AH R2486 Ambient R2486-01, -02, -03, -04 Temperature Value 1300 0.1 -80 to +50 -30 to +50 Unit V dc mA °C CHARACTERISTICS (Typ. at 25 °C) Parameter Luminous B Radiant at 420 nm Blue Sensitivity index Cathode Sensitivity (CS 5-58) C Quantum Efficiency at 390 nm (peak) Luminous Anode Sensitivity D Radiant at 420 nm Gain D Anode Dark Current E Rise Time F Time Response D Electron Transit Time G Value 80 72 9.0 23 40 36 × 103 5.0 × 105 20 5.5 17 Unit µA/lm mA/W — % A/lm A/W — nA ns ns Table 1: Voltage Distribution Ratio and Supply Voltage Electrodes K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11 Dy12 Distribution Ratio 1 1 1 1 1 1 1 1 1 1 1 1 1 Supply Voltage: 1250 V dc, K: Cathode, Dy: Dynode, P: Anode P 2 Figure 1: Typical Spectral Response 100 TPMHB0495EA Figure 2: Typical Gain 107 TPMHB0482EB CATHODE RADIANT SENSITIVITY CATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%) 106 10 105 QUANTUM EFFICIENCY GAIN 1 104 103 0.1 102 0.01 200 400 600 800 101 300 500 700 1000 1500 WAVELENGTH (nm) SUPPLY VOLTAGE (V) Figure 3: Example of Spatial Resolution TPMHB0481EB Figure 4: Example of Spatial Resolution as a Function of Incident Photoelectrons TPMHB0150EC ANODE SPATIAL RESOLUTION (FWHM) COUNT PER CHANNEL SUPPLY VOLTAGE=1250 V WAVELENGTH=565 nm SPOT SIZE= 1.0 mm SPOT INTERVAL=1.0 mm on PHOTOCATHODE NUMBER OF INCIDENT PHOTOELECTRONS=4000 per EVENT (mm) 1.0 0.8 0.6 WAVELENGTH=565 nm SPOT SIZE= 1.0 mm FWHM=0.3 mm 0.4 PITCH= 3.75 mm NUMBER= 16 + 16 (X) (Y) 0.2 0.1 2 10 103 104 105 CHANNEL NUMBER NUMBER OF INCIDENT PHOTOELECTRONS (per/event) NOTE: The above data is measured with spot light source. The spot size is 1 mm in diameter, and the wavelength is 565 nm. The light is operated in pulse mode so that light intensity of 4,000 photoelectrons is obtained. The light source is scanned with 1 mm step on the photocathode, the output signal is calculated and plotted in accordance with the position of the light source. The fluctuation of the position signal is 0.3 mm at FWHM. 3 POSITION-SENSITIVE PHOTOMULTIPLIER TUBES R2486 SERIES Figure 5: Spatial Resolution X-Axis 100 TPMHB0678EA Y-Axis TPMHB0679EA SUPPLY VOLTAGE: -1000 V WAVELENGTH: 420 nm 80 100 X8 SUPPLY VOLTAGE: -1000 V WAVELENGTH: 420 nm RELATIVE OUTPUT (%) RELATIVE OUTPUT (%) X9 80 Y9 Y8 60 FWHM: 8.6 mm 40 60 FWHM: 9.5 mm 40 20 20 0 100 15 30 45 60 75 0 100 15 30 45 60 75 POSITION (mm) POSITION (mm) Figure 6: Test Condition of Spatial Resolution SPOT SIZE: 1 mm Figure 7: Example of Scintillation Imaging TPMHF0062 10 mm SCAN INPUT WINDOW (t=3 mm) 10 mm 10 mm PHOTOELECTRON PHOTOCATHODE MESH DYNODE CROSS WIRE ANODE ...(X8, X9 or Y8, Y9) PHOTOCATHODE 2 mm Position of collimator NaI (TI): 5 mmt + 57Co Supply Voltage = 1250 V Material: lead Thickness: 10 mm Position of Incident Radiation TPMHC0206EA OPERATING EXAMPLE The R2486-02 can be connected to commercially available general-purpose measuring instruments. The figure below shows a typical connection example. Ortec Position-Sensitive Detector Analyzer (NIM Module) can be connected to the R2486-02. SUMMING AMP. ORTEC 533 XA XB YC YD XA XB DELAY LINE AMP. XA + XB POSITION INPUT ENERGY INPUT POSITION INPUT ENERGY INPUT XA XA + XB X POSITION ADC R2486-02 YC YD YC + YD PREAMPLIFIER INTEGRATION YC YC + YD Y POSITION ADC ORTEC 460 POSITION SENSITIVE DETECTOR ANALYZER ORTEC 464 PC TPMHC0156EB 4 Figure 8: X- and Y-Axis of R2486 Series GUIDE MARK X-1 Y-1 Y-16 X-16 TOP VIEW TPMHC0207EA DIMENSIONAL OUTLINE (Unit: mm) Figure 9: R2486 76 ± 1 50 MIN. 3 PHOTOCATHODE 13 MAX. 40.0 ± 0.5 54.0 ± 0.5 CATHODE PIN 60 3.75 X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 X13 X14 X15 X16 DY6 DY4 Y6 Y5 Y7 Y8 X16 X15 SEMI FLEXIBLE LEADS X DY8 DY10 X14 X13 X12 X11 X10 X9 Y16 Y15 Y14 X4 X3 X2 X1 Y9 Y10 Y13 Y12 Y11 X5 3.75 Y4 Y3 DY12 DY2 Y2 Y1 Y K DY1 X8 X7 X6 DY3 DY11 DY5 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 Y10 Y11 Y12 Y13 Y14 Y15 Y16 DY9 DY7 ANODE PATTERN (TOP VIEW) BOTTOM VIEW 75 MAX. TPMHA0422EB 55 ± 2 5 POSITION-SENSITIVE PHOTOMULTIPLIER TUBES R2486 SERIES DIMENSIONAL OUTLINE (Unit: mm) Figure 10: R2486-01 76 ± 1 50 MIN. 3 PHOTOCATHODE 55 ± 2 X X16 X15 X14 X13 X12 Y5 Y6 Y7 Y8 IC SOCKET (SNAP SIP) EMC 14120-01-445 IC SOCKET PITCH 2.54 2.54 Y4 Y3 Y2 Y1 X8 X7 X6 X5 X4 X3 X2 X1 HV-IN 75+1 -0 66 X11 X10 X9 Y16 Y15 Y14 Y9 Y10 Y11 Y12 Y13 Y 2- 3.2 BOTTOM VIEW TPMHA0423EB 1000 ± 100 C1 1R 2R 2R 2R C2 2R WIRE ANODE X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 X13 X14 X15 X16 DY12 DY11 DY10 DY9 DY8 DY7 4 -H.V: RG-174/U 2R 2R 20 ± 1 1.6 84 MAX. 1R : 180 kΩ 1/2 W 2R : 360 kΩ 1/2 W C1 : 0.002 µF/2 kV C2 : 0.01 µF/500 V 2R C3 : 0.01 µF/500 V 2R 2R C3 10 kΩ 2R DY6 DY5 DY4 DY3 DY2 DY1 2R 2R F K Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 Y10 Y11 Y12 Y13 Y14 Y15 Y16 1R RG-174U HV IN TPMHC170EA 6 Figure 11: R2486-02 76 ± 1 50 MIN. PHOTOCATHODE 3 55 ± 2 11.2 20 ± 1 SIGNAL OUTPUT : 0.8D COAXIAL CABLES -H.V : RG-174/U X XB YC YD XA Y 1000 ± 100 86.2 ± 3.0 TPMHA0160ED BOTTOM VIEW Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 Y10 Y11 Y12 Y13 Y14 Y15 Y16 X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 X13 X14 X15 X16 C3 DY12 DY11 DY10 DY9 DY8 DY7 DY6 DY5 DY4 DY3 DY2 DY1 F K 1R 2R 2R 2R 2R 2R 2R 1R 2R 2R C2 2R 2R 2R 2R C1 10 kΩ 1R: 180 kΩ 1/2 W 2R: 360 kΩ 1/2 W C1: 0.002 µF/2 kV C2: 0.01 µF/500 V C3: 0.01 µF/500 V RG-174U HV IN XA XB YC YD EACH RESISTOR: 1 KΩ TPMHC0086ED 7 POSITION-SENSITIVE PHOTOMULTIPLIER TUBES R2486 SERIES Figure 12: R2486-03 Variant type of R2486-02 having HA coating and µ-metal shielding. PHOTOCATHODE HA COATING 77 ± 1 76 ± 1 50 Min. 3 55 ± 2 11.2 20 ± 1 MAGNETIC SHIELD HEAT SHRINKABLE TUBE LIGHT SHIELD H.V: RG-174/U 1000 ± 100 SIGNAL OUTPUT : 0.8D COAXIAL CABLES 86.2 ± 3.0 TPMHA0490EA Figure 13: R2486-04 Variant type of R2486-03 with the aluminum case. ALUMINUM CASE SIGNAL OUTPUT 0.8D COAXIAL CABLE 88 ± 0.1 HV RG-174/U 120.0 ± 0.2 1000 ± 100 TPMHA0424EA HOMEPAGE URL http://www.hamamatsu.com HAMAMATSU PHOTONICS K.K., Electron 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 E-mail: usa@hamamatsu.com Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658 E-mail: info@hamamatsu.de 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: infos@hamamatsu.fr 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: info@hamamatsu.co.uk 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: info@hamamatsu.se 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: info@hamamatsu.it TPMH1206E02 DEC. 2001 IP