Datasheet

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. IP
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