GENERAL
FEATURES
Parameter
Description/Value
Unit
Spectral Response
Wavelength of Maximum Response
Photocathode
Window Material
Dynode
Base
Socket (Supplied)
nm
nm
--
mm dia.
--
--
m
--
--
--
--
--
--
--
300 to 650
420
Bialkali
21
Borosilicate glass
1.500
0.001
Less than
50
Plano-concave
Circular-cage
10
14-pin glass base
12-pin base JEDEC No. B12-43
E678-14C (supplied)
E678-12A (supplied)
Material
Minimum Useful Size
Material
Index of Refraction at 420nm
Faceplate Flatness
Shape
Structure
Number of Stages
R1924
R1924-01
R1924
R1924-01
PHOTOMULTIPLIER TUBES
R1924, R1924-01
Information furnished by HA MAM ATS 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.
1998 Hamamatsu Photonics K.K.
Subject to local technical requirements and regulations, availability of products included in this promotional material may var y. Please consult with our sales office.
For Scintillation Counting, Photon Counting, Ruggedized, Low Profile,
25mm (1 Inch) Diameter, Bialkali Photocathode (300nm to 650nm), 10 Stages, Head-on Type
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Value
Unit
Supply Voltage
Average Anode Current
A
Ambient Temperature
Vdc
Vdc
mA
C
1250
250
0.1
-80 to +50
Between Anode and Cathode
Between Anode and Last Dynode
The R1924 and R1924-01 are 1" diameter series photomultiplier tubes. They feature a low- profile configuration and a rugged con-
struction suited for radiation detecting instruments. They provide high quantum efficiency, fast time response and excellent energy
resolution, so they are well suited to scintillation counting application and photon counting application.
Rugged Construction
Low Profile Configuration
High Quantum Efficiency at 420nm ................................. 26%
Excellent Pulse Height Resolution
with
137
Cs and Nal (Tl) ............................................ 7.8%
Fast Time Response .......................................... 2ns at 1000V
APPLICATIONS
Scintillation Counting
-ray survey meter, Door monitor, Hand monitor, etc.
Photon Counting
Fluorescence spectrophotometer, Chemiluminescence
spectrophotometer, etc.
CHARACTERISTICS (at 25
C)
Parameter
Min.
Unit
Cathode Sensitivity
Anode Sensitivity
Gain
D
Anode Dark Current
E
Time Response
Pulse Height Resolution
J
%
A/lm
mA/W
A/lm-b
A/lm
--
nA
ns
ns
ns
%
--
60
--
--
20
--
--
--
--
--
--
--
--
--
--
--
--
20
--
--
--
--
Max.
Typ.
26
90
85
10.5
100
1.1
10
6
3
2.0
19
1.1
7.8
Quantum Efficiency at 420nm
Luminous
B
Radiant at 420nm
Blue
C
Luminous
D
Anode Pulse Rise Time
F
Electron Transit Time
G
Transit Time Spread
H
Supply Voltage: 1000Vdc, K: Cathode, Dy: Dynode, P: Anode
Table 1: VOLTAGE DISTRIBUTION RATIO
Electrodes
Distribution Ratio
K
Dy1
3
Dy2
1
Dy3
1
Dy4
1
Dy5
1
Dy6
1
Dy7
1
Dy8
1
Dy9
1
1
1
Dy10
P
Figure 2: Typical Gain and Dark Current Characteristics
TPMHB0551EA
PHOTOMULTIPLIER TUBES R1924, R1924-01
NOTES
A: Averaged over any interval of 30 seconds maximum and the whole
photocathode is illuminated.
B: The light source is a tungsten filament lamp operated at a distribution
temperature of 2856K. The light input is 0.01 lm and 150 volts are
applied between the cathode and all other electrodes connected
together as anode.
C: 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.
D: Measured with the same light source as Note B and the light input is
0.1
lm. The anode-to-cathode supply voltage and voltage distribu-
tion ratio are shown in Table 1.
E: Measured with the same supply voltage and voltage distribution ratio
as Note D after 30-minute storage in darkness.
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 (410nm). The anode-to-cathode supply
voltage and voltage distribution ratio are shown in Table 1.
G: The electron transit time is the interval between the arrival of a delta
function light pulse (410nm) at the entrance window of the tube and
the time the output pulse reaches the peak amplitude. In measure-
ment the entire photocathode is illuminated. The anode-to-cathode
supply voltage and voltage distribution ratio are shown in Table 1.
H: Also called transit time jitter. This is the fluctuation in electron transit
time between individual pulses in the single photoelectron state, and
may be defined as the FWHM of the frequency distribution of the
transit times. The anode-to-cathode supply voltage and voltage distri-
bution ratio are shown in Table 1 and wavelength of light pulse is
410nm.
J: The pulse height resolution is measured with
137
Cs and Nal(Tl) scintil-
lator (3/4" diameter
3/4" thickness). The anode-to-cathode supply
voltage and voltage distribution ratio are shown in Table 1.
Figure 3: Typical Time Response
TPMHB0552EA
Figure 1: Typical Spectral Response
TPMHB0204EA
200
800
600
400
0.01
0.1
1
10
100
CATHODE RADIANT SENSITIVITY (mA/W)
QUANTUM EFFICIENCY (%)
WAVELENGTH (nm)
CATHODE
RADIANT
SENSITIVITY
QUANTUM
EFFICIENCY
500
600
700
800
1000
1200
1400
10
-10
10
-8
10
-7
10
-6
10
-11
SUPPLY VOLTAGE (V)
ANODE DARK CURRENT (A)
GAIN
10
-9
10
3
10
5
10
6
10
7
10
2
10
4
TYPICAL
GAIN
TYPICAL
DARK CURRENT
40
1
0.8
0.4
0.6
0.2
0.3
10
20
8
4
6
2
500
1000
1500
SUPPLY VOLTAGE (V)
TIME (ns)
RISE TIME
TRANSIT
TIME
SPREAD
TRANSIT
TIME
Figure 4: Typical Pulse Height Distribution
with
137
Cs & Nal(Tl)
TPMHB0553EA
Figure 5: Typical Single Photoelectron Pulse Height
Distribution
TPMHB0554EA
Figure 6: Typical Temperature Coefficient of Anode
Sensitivity
TPMHB0555EA
Figure 7: Typical Temperature Characteristics of Dark
Current
TPMHB0556EA
0
200
2
4
6
8
10
10
3
400
600
800
1000
CHANNEL NUMBER
RELA
TIVE COUNTS
SOURCE:
137
Cs
SCINTILLATOR: NaI (Tl) 3/4"
3/4"t
SUPPLY VOLTAGE: 868V
RESOLUTION-7.8(%)
LLD
CHANNEL NUMBER
COUNTS PER CHANNEL
FULL
SCALE 10
4
WAVELENGTH OF INCIDENT LIGHT: 400 (nm)
SUPPLY VOLTAGE: 1000 (V)
LOWER LEVEL DISCRI.: 70 (ch)
TEMPERATURE: 25 (
C)
DARK COUNTS: 154 (cps)
SIGNAL + DARK
DARK
0
200
0.2
0.4
0.6
0.8
1
400
600
800
1000
+1.2
+0.8
+0.4
0
-0.4
-0.8
-1.2
200
300
500
600
400
700
WAVELENGTH (nm)
TEMPERA
TURE COEFFICIENT
(%/
C)
100
10
1
0.1
0.01
-20
-40
0
+20
+40
TEMPERATURE (
C)
ANODE DARK CURRENT
(nA)
(AFTER 30 MINUTE STORAGE)
TPMH1224E01
AUG. 1998
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 Limited: 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: Frgatan 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.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741
TACCA0004EA
TPMHA0436EA
Figure 8: Dimensional Outline and Basing Diagram (Unit: mm)
Figure 9: Dimensional Outline and Basing Diagram (Unit: mm)
PHOTOMULTIPLIER TUBES R1924, R1924-01
Socket
(E678-14C)
R1924
Warning - Personal Safety Hazards
Electrical Shock -- Operating voltage
applied to this device presents shock hazard.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
K
DY1
DY6
DY5
DY7
DY9
P
IC
IC
DY10
DY8
DY3
DY4
DY2
SHORT PIN
25.4
0.5
21MIN.
13MAX.
43.0
1.5
FACEPLATE
PHOTOCATHODE
14 PIN BASE
7
2.5
26
11.6
30
35
44
19.1
9
25
2- 3.5
TACCA0009EB
TPMHA0437EA
Socket
(E678-12A)
R1924-01
DY1
DY3
DY5
DY7
P
DY9
DY10
DY8
DY6
DY4
DY2
3
4
5
6
10
11
12
13
14
17
K
Temporary Base Removed
DY1
DY3
DY5
DY7
P
DY9
DY2
K
1
2
3
4
5
6
7
8
9
10
11
12
DY10
DY8
DY6
DY4
Bottom View
2
8
25.4
0.5
21MIN.
13MAX.
43.0
1.5
50MIN.
FACEPLATE
PHOTOCATHODE
SEMIFLEXIBLE
LEADS
12 PIN BASE
JEDEC
No. B12-43
37.3
0.5
40
47
5
8
15
17
2- 3.2
34
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