38
Product Variations
Specifications
The H7155 series are compact photon counting head devices consisting of a
metal package photomultiplier tube along with a high-speed photon counting
circuit and a high-voltage power supply circuit. The high voltage supply for
photomultiplier tube and the discriminator level are preset to optimum values,
allowing photon counting measurement by just connecting a +5 V supply.
The H7155-20 has an internal prescaler of division by 4. This prescaler im-
proves the count linearity 4-fold compared to the H7155.
Metal package PMT
Photon Counting Head H7155 Series
Type No.
Parameter
H7155
H7155-20
Input Voltage
Max. Input Voltage
Max. Input Current
Effective Area
Peak Sensitivity Wavelength
Count Sensitivity
Count Linearity *
1
Dark Count *
3
Pulse-pair Resolution
Output Pulse Width
Output Pulse Height *
4
Recommended Load Resistance
Signal Output Logic
Operating Ambient Temperature
Storage Temperature
Weight
+4.5 to +5.5
+6
8
420
50
Positive logic
+5 to +40
-20 to +50
75
H7155
50
1.2
10
5
2.7
10
5
2.2
10
5
2.1
10
4
1.5
10
6
100
500
70
30
3.6
3.0
H7155-20
70
1.2
10
5
*
2
2.7
10
5
*
2
2.2
10
5
*
2
2.1
10
4
*
2
10
10
6
*
2
100 *
2
500 *
2
10
Depends on count rate.
2.2
2.0
Unit
V
V
mA
mm
nm
s
-1
pW
-1
s
-1
s
-1
ns
ns
V
--
C
C
g
300 nm to 650 nm
Spectral Response
No
Yes
Prescaler
*1: Random pulse, at 10 % count loss
*2: Output count will be decreased to 1/4 after the prescaler.
*3: After 30 minute storage in darkness
*4: With input voltage +5 V, Load resistance 50
and Coaxial cable RG-174/U (450 mm)
300 nm
400 nm
500 nm
600 nm
Typ.
Max.
Typ.
Min.
39
Characteristics
(Count sensitivity, Dark count)
Block Diagram
Dimensional Outlines
(Unit: mm)
TPHOB0040EC
TPHOB0047EA
TPHOC0035ED
TPHOA0017ED
COUNT SENSITIVITY (s
-1
pW
-1
)
WAVELENGTH (nm)
200
300
400
10
3
10
4
10
5
10
6
600
700
800
900
500
H7155
10
5
10
4
10
3
10
2
10
1
10
0
5
10
15
20
25
30
35
40
TEMPERATURE (
C)
D
ARK COUNT (s
-1
)
H7155
Option
(Optical Fiber Adapter) (Unit: mm)
TACCA0055EA
4-M2
FC-R
14.0
0.2
8.5
3.5
0.2
SIDE VIEW
FRONT VIEW
22.0
0.5
E5776-51 (SMA Type)
4-M2
SMA
14.0
0.2
10.7
5.0
3.0
SIDE VIEW
FRONT VIEW
22.0
0.5
TACCA0239EA
E5776 (FC Type)
Photon Counting Heads
PMT
COMPARATOR
PULSE
SHAPER
+
-
HV POWER SUPPLY
VOLTAGE DIVIDER
CIRCUIT
LLD.
R
L
50
OUTPUT
TO
PULSE
COUNTER
+5 V
GND
AMP
POSITIVE
LOGIC
POWER INPUT
50.0
0.5
30.0
0.2
0.5
10
18
14.0
.0.2
50.0
0.5
22.0
0.5
14.0
.0.2
4
EFFECTIVE AREA
( 8 MIN.)
4-M2 DEPTH: 4
4-M3 DEPTH: 4
SIGNAL OUTPUT
BNC-R CONNECTOR
POWER INPUT CONNECTOR
HIROSE HR10A-7R-4P
15
20
450
20
POWER INPUT CONNECTOR
HIROSE HR10A-7P-4S
Vcc (+5 V)
GND SHIELD
40.0
0.2
5
9.4
WINDOW
POWER CABLE (SUPPLIED)
PHOTOCATHODE
FRONT VIEW
SIDE VIEW
REAR VIEW
1: Vcc +5 V
2: GND
3: IC*
4: IC*
*IC: Internal Connection
(Do not use)
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