Compact / Lightweight, Wide Dynamic Range,
Integrated Photon Counting Circuit, ECL Output
The H3460-53 and -54 Photon Counting Heads consist of a
25mm (1") diameter photon counting photomultiplier tube and a
high-speed amplifier/discriminator in a compact case. By simply
connecting power supplies for the photomultiplier tube and am-
plifier/discriminator, plus a pulse counter to the output, photon
counting with high S/N ratio will be performed. Since the H3460-53
and -54 have a superior pulse-pair resolution, there is no sub-
stantial pulse overlapping up to 10
7
cps, thus high-precision pho-
tometry with excellent linearity is possible.
lnformation furnished by HA MAM ATS U is believed to be reliabIe. However, no responsibility is assumed for possibIe inaccuracies or ommissions. Specifications are
subject to change without notice. No patent right are granted to any of the circuits described herein.
1995 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.
H3460-54
PHOTON COUNTING HEADS
H3460-53
Figure 1: Block Diagram
Figure 2: Typical Linearity (Dynamic Range)
MAXIMUM RATINGS
Parameter
Value
Supply Voltage for PMT
Count Rate (Random Pulses)
Operating Temperature
Supply Voltage for Amplifier
/Discriminator
+1250
+8, 6
20
0 to +50
Vdc
Vdc
Mcps
Storage Temperature
40 to +50
Unit
RECOMMENDED OPERATING CONDITIONS
Parameter
Value
Supply Voltage for PMT
Supply Voltage for Amplifier
/Discriminator
Approx. +1000
B
5
Vdc
Vdc
Unit
SPECIFICATIONS
Parameter
Value
Counting Linearity
A
Dark Count (at +25 )
Minimum Effective Size
of Photocathode
21
13
mm dia.
Voltage Divider Current
(at +1000Vdc)
A at 10% deviation from linear output.
230
A
Mcps
H3460-53
180
cps Max.
H3460-54
300
cps Max.
Spectral Response
300 to 650
nm
Unit
SPECIFICATIONS OF AMPLIFIER/DISCRIMINATOR
Pulse Pair Resolution
Discrimination Level
(Input Equivalent)
8 ns
Output
ECL balanced line, 3 ns width
Power Requirements
+5 Vdc/35 mA, -5 Vdc/150 mA
-3 to -25 mVdc
B Input voltage is positive only.
TPHOC0001EA
+
PMT
PULSE
AMPLIFIER
COMPA-
RATOR
VOLTAGE
DIVIDER
PULSE SHAPER
OUTPUT
ECL
BALANCED LINE
+5Vdc
5Vdc
LLD
MONITOR
GND
+HV
LLD
ADJ
TPHOB0001EB
RELATIVE OUTPUT COUNT
RELATIVE INPUT LIGHT
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
PHOTON COUNTING HEADS H3460-53, H3460-54
Figure 3: Typical Spectral Response
Figure 4: Temperature Characteristics of Dark Count
Figure 5: Count Efficiency Characteristics for H3460-53
Figure 6: Count Efficiency Characteristics for H3460-54
TPHOB0002EA
200
0.01
QUANTUM EFFICIENCY (%)
WAVELENGTH (nm)
400
600
800
0.1
1
10
100
H3460-54
H3460-53
TPHOB0003EA
0
AMBIENT TEMPERATURE (
C)
10
1
DARK COUNT (cps)
10
20
30
40
50
10
2
10
3
10
4
10
5
H3460-53
H3460-54
TPHOB0004EA
10
16
INPUT LIGHT (W)
10
1
OUTPUT COUNT (cps)
10
15
10
14
10
13
10
12
10
11
10
10
10
2
10
3
10
4
10
5
10
6
10
7
10
8
600nm
400nm
500nm
TPHOB0005EA
INPUT LIGHT (W)
OUTPUT COUNT (cps)
10
16
10
1
10
15
10
14
10
13
10
12
10
11
10
10
10
2
10
3
10
4
10
5
10
6
10
7
10
8
400nm
500nm
600nm
Figure 7: Dimensional Outline (Unit: mm)
TPHOA0001EB
ALUMINUM HOUSING
HEAT-SHRINKABLE TUBE
WITH MAGNETIC SHIELD (t=0.2mm)
115 1.0
LOW VOLTAGE INPUT CABLE FOR
AMPLIFIER/DISCRIMINATOR
(TWISTED-PAIR LINE:GRAY)
+
5V(ORANGE)
5V(WHITE)
GND(SHIELD)
SIGNAL OUTPUT CABLE
(TWISTED-PAIR LINE:BLACK)
POSITIVE(RED)
NEGATIVE(WHITE)
GND(SHIELD)
1000 50
HIGH VOLTAGE
WIRES FOR PMT
+
HV(RED)
GND(BLACK)
DISCRIMINATION LEVEL
MONITOR
SCREW FOR ADJUSTMENT
OF DISCRIMINATION LEVEL
34 0.5
5
21 MIN.
PMT
PHOTOCATHODE
SOCKET
TPHO1001E03
SEP. 1995
PHOTON COUNTING HEADS H3460-53, H3460-54
TPHOC0002EA
+
H3460
ECL LINE
RECEIVER
WAVEFORM
SHAPER
MULTI-
PLEXER
ECL TTL
PRESCALER
SELECT
TTL
OUTPUT
Block Diagram of C3589 Prescaler
PRESCALER C3589 (For futher information, please contact our sales offices.)
The C3589 Prescaler converts the ECL output pulses from the
H3460 series into TTL level signals. The output pulses can be
divided by 10.
The use of the C3589 makes it possible to carry out photon
counting with a wide dynamic range without using a high-
speed counter.
RELATED PRODUCTS
EXAMPLE OF PHOTON COUNTING SYSTEM
TPHOC0003EB
C3589
H3460
-53, -54
PHOTON COUNTING
HEAD
PRESCALER
ECL OUTPUT
C4720
TTL
PULSE
+HV/
5V
POWER SUPPLY
(For futher information, please
contact our sales offices)
PULSE COUNTER
+
HV
5V
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, 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: 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.: Via Della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)2-935 81 733, Fax: (39)2-935 81 741
PDF 
ZIP