View R2949_301343.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

PHOTOMULTIPLIER TUBE
R2949
(Low Dark Counts Type of R928) Modified R928, 8 x 6mm Photocathode Area Size Low Dark Counts, Extended Red Multialkali, High Sensitivity For Photon Counting Applications
FEATURES
Low Dark Counts ................................................. 300cps (at 25C) Low Dark Current ............................................. 2nA (after 30min.) Wide Spectral Response ........................................ 185 to 900 nm High Cathode Sensitivity Luminous ...................................................................... 200A/lm Radiant at 400nm ........................................................... 68mA/W High Anode Sensitivity (at 1000V) Luminous ...................................................................... 2000A/lm Radiant at 400nm .................................................... 6.8 x 105A/W Low Drift and Hysteresis The R2949 is a 28mm (1-1/8 inch) diameter, 9-stage, side-on type photomultiplier tube having the same extended red multialkali photocathode 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.
GENERAL
Parameter Spectral Response Wavelength of Maximum Response Photocathode Material Minimum Useful Size Secondary Emitting Surface Dynode
Direct Interelectrode Capacitances
Figure 1: Typical Spectral Response
Description/Value Unit 185 to 900 400 Multialkali 8x6 UV glass Multialkali Circular-cage 9 Approx. 4 Approx. 6 11-pin base JEDEC No. B11-88 Approx. 45 E678-11A E717-21 nm nm -- mm -- -- -- -- pF pF -- g -- --
0.01 200 400 600 800 1000 100
TPMSB0155EA
CATHODE RADIANT SENSITIVITY
CATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%)
10 QUANTUM EFFICIENCY
Window Material Structure Number of Stages Anode to Last Dynode Anode to All Other Electrodes
1
Base Weight Suitable Socket (Option) Suitable Socket Assembly (Option)
0.1
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 TUBE R2949
MAXIMUM RATINGS (Absolute Maximum Values at 25C)
Parameter Supply Voltage Between Anode and Cathode Between Anode and Last Dynode
A
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. ENI = 2q*ldb*G*f S
Value 1250 250 0.1 -80 to +50
Unit Vdc Vdc mA C
Average Anode Current Ambient Temperature
CHARACTERISTICS (at 25C)
Parameter Quantum Efficiency at 255nm Min. -- 140 -- -- -- -- -- 0.1 -- 1000 -- -- -- -- -- --
F
Typ. 25.3 200 18 52 68 41 3.5 0.3 7.5 2000 1.8 x 105 5.2 x 4.1 x 105 105 6.8 x 105 3.5 x 104 1.0 x 107 300 3 2 1.2 x 10-16
Max. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 500 -- 25 -- -- -- -- --
Unit % A/lm mA/W mA/W mA/W mA/W mA/W -- A/lm-b A/lm A/W A/W A/W A/W A/W -- cps cps nA W ns ns % %
Luminous B at 194nm Cathode Sensitivity Radiant at 254nm at 400nm at 633nm at 852nm Red/White Ratio Blue D Luminous E at 194nm Anode Sensitivity Radiant at 254nm at 400nm at 633nm at 852nm Gain E Anode Dark Counts Anode Dark Current at +25C at -20C
F G C
with R-68 Filter
where q = Electronic charge (1.60 x 10-19 coulomb) ldb = Anode dark current (after 30 minute storage) in darkness) 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. H: 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. Hysteresis is temporary instability in anode current after light and voltage are applied.
ANODE CURRENT
-- -- -- -- -- -- -- --
ENI (Equivalent Noise Input) Time Response
E
Anode Pulse Rise Time H Electron Transit Time J Voltage Hysteresis
2.2 22 0.1 1.0
Ii 0 5 6
Imin.
Imax. TIME
Anode Current Current Hysteresis Stability K
7 (MINUTES)
Hysteresis =
Imax. - Imin. Ij
x 100 (%)
Table 1: Voltage Distribution Ratio
Electrodes Distribution Ratio K 1 Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 1 1 1 1 1 1 1 1 1 P
(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
Figure 2: Anode Sensitivity and Gain Characteristics
TPMSB0156EA
Figure 3: Typical Time Response
TPMSB0157EA
104
108
200
ANODE LUMINOUS SENSITIVITY (A/lm)
103
107
100 80 60
TY PI CA LA M NO IN T DE IM YP UM IC SE AN AL NS OD GA IT IV E IN A IT SE N Y D NS IT IV IT Y
102
106
40
TRAN
SIT TIM
E
TIME (ns)
20
101
105
GAIN
10 8 6 4
100
104
RISE
10-1 103 2
TIME
10-2 200
300
500
700
1000
102 1500
1
300
500
700
1000
1500
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
Figure 4: Typical Temperature Coefficient of Anode Sensitivity
TPMSB0158EA
Figure 5: Typical Temperature Characteristic of Dark Counts
TPMSB0159EA
160 800nm 140 600nm
10000
120
1000 400nm
ANODE SENSITIVITY (%)
100
80
DARK COUNTS (cps)
100
60
40
10
20
0
-40
-20
0
+20
+40
0 -40
-20
0
+20
+40
TEMPERATURE (C)
TEMPERATURE (C)
PHOTOMULTIPLIER TUBE R2949
Figure 6: Single Photon Pulse Height Distribution
104
TPMSB0160EA
Figure 7: Dimensional Outline and Basing Diagram (Unit: mm)
29.0 1.7 8MIN. PHOTOCATHODE 7MIN. DY5 DY4 4 80MAX. DY3 3 94MAX. DY2 2 1 11 K DY6 6 DY7 8 DY8 9 DY9 10 P
COUNTS PER CHANNEL (cps)
7.5 x 103
AMBIENT TEMP. : 25C SUPPLY VOLTAGE*: 730Vdc WAVELENGTH OF INCIDENT LIGHT : 800nm : 300cps DARK COUNTS
5
7
5.0 x 103
6MIN.
49 1
2.5 x 103 DARK 0 0
SIGNAL + DARK
DY1
DIRECTION OF LIGHT
512 DISCRIMINATION LEVEL
PULSE HEIGHT (Channel)
* The supply voltage is set at gain to be 1 x 106
32.2 0.5 11 PIN BASE JEDEC No. B11-88
INSULATION COVER
TPMSA0016EA
Figure 8: Optional Accessories (Unit: mm) E678-11A (Socket)
49 38
D Type Socket Assembly E717-21
PMT 5 3.5 33.0 0.3 P R10 DY9 38.0 0.3 49.0 0.3 DY8 DY7 DY6 DY5 31.0 0.5 HOUSING (INSULATOR)
TACCA0064EA
SOCKET PIN No. 10
33
C3 C2 C1
SIGNAL GND SIGNAL OUTPUT RG-174/U (BLACK) POWER SUPPLY GND AWG22 (BLACK)
3.5
9 R9 8 R8 7 R7 6 5 4 R4 3 R3 2 R2 1 R1 11 -HV AWG22 (VIOLET)
TACCA0002ED
5
29
4.8
29
R6 R to R10 : 330k C1 to C3 : 0.01F R5
18
4
DY4 DY3 DY2 POTTING COMPOUND DY1 K
* 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.
450 10
L
Warning-Personal Safety Hazards Electrical Shock -- Operating voltage applied to this device presents shock hazard.
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.: Via Della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)2-935 81 733, Fax: (39)2-935 81 741
TPMS1045E01 JUN. 1998

▲Up To Search▲

Price & Availability of R2949

	To Download R2949 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .