Datasheet

Side-on PMT
Photon Counting Head H8259 Series
The H8259 series is a photon counting head device containing a 28-mm (11/8") diameter side-on photomultiplier tube, high-speed photon counting circuit,
and a high-voltage power supply circuit. The photomultiplier tube sensitive in
the near IR region usually has a large dark count due to thermal noise but high
S/N measurements can be obtained since a low-noise photomultiplier tube is
selected. The high voltage supply for photomultiplier tube and the discrimination
level are preset to optimum values, allowing photon counting measurement by
just connecting a +5 V supply.
An electronic gate circuit (shutter circuit) is also included to eliminate extraneous light such as excitation light from the measurement.
Product Variations
Type No.
H8259
H8259-01
H8259-02
Spectral Response
185 nm to 680 nm
185 nm to 850 nm
185 nm to 900 nm
Features
Low dark count in UV to visible range
Low dark count in UV to near IR range
High sensitivity and low dark count in UV to near IR range
This product can't be used at vacuum environment or reduced pressure environment. Please pay attention when the H8259 series is used for
measuring the light below 190 nm.
Specifications
(at +25 °C)
H8259
Parameter
Input Voltage
Max. Input Voltage
Max. Input Current
Effective Area
Peak Sensitivity Wavelength
Count
Sensitivity
Typ.
4 × 20
300 nm
400 nm
500 nm
600 nm
700 nm
800 nm
900 nm
400
2.1 × 105
2.6 × 105
1.9 × 105
7.5 × 104
1.5 × 103
—
—
Count Linearity *1
Dark Count *2
Typ.
Max.
Gate Input
Mode
Switching Ratio
Level
Input Impedance
Gate Width (FWHM)
Repetition Rate
Max.
Pulse-pair Resolution
Output Pulse Width
Min.
Output Pulse Height *3
Typ.
Recommended Load Resistance
Signal Output Logic
Operating Ambient Temperature *4
Storage Temperature *4
Weight
Gate
H8259-01
+4.5 to +5.5
+6
80
30
80
430
2.7 × 105
3.3 × 105
3.2 × 105
2.3 × 105
6.8 × 104
1.6 × 104
—
2.5 × 106
80
200
Normally ON
1/1000
C-MOS (High level: +3.5 V to +5.0 V)
1
50 µs to ∞
10
35
30
2.0
2.2
50
Positive logic
+5 to +40
-20 to +50
220
*1: Random pulse, at 10 % count loss
*2: After 30 minutes storage in darkness
*3: With input voltage +5 V, Load resistance 50 Ω and Coaxial cable RG-174/U (450 mm)
56
H8259-02
4×6
400
2.5 × 105
3.0 × 105
2.5 × 105
2.0 × 105
1.4 × 105
7.5 × 104
3.0 × 102
*4: No condensation
Unit
V
V
mA
mm
nm
s-1·pW-1
s-1
400
800
s-1
—
—
—
kΩ
—
kHz
ns
ns
V
Ω
—
°C
°C
g
Photon Counting Heads
Characteristics (Count sensitivity, Dark count)
TPHOB0023EE
104
106
TPHOB0024EE
H8259-01
COUNT SENSITIVITY (s-1·pW-1)
H8259-02
H8259-02
103
DARK COUNT (s-1)
105
H8259
104
H8259-01
102
H8259
101
103
100
100
200
300
400
500
600
700
800
900
5
10
WAVELENGTH (nm)
AMP
20
25
30
35
40
AMBIENT TEMPERATURE (°C)
Block Diagram
PMT
15
Gate Timing Chart
100 µs to ∞
PULSE
SHAPER
COMPARATOR
50 µs to ∞
+3.5 V to +5 V at 1 kΩ
OUTPUT
+
-
RL
50 Ω
LLD
POSITIVE
LOGIC
HV POWER SUPPLY /
VOLTAGE DIVIDER
CIRCUIT
TO
PULSE
COUNTER
GATE SIGNAL
INPUT
PMT
OPERATION
0V
ON
OFF
DELAY TIME:
600 ns MAX.
GND
+5 V
POWER INPUT
DELAY TIME:
500 ns MAX.
MIN. GATE "OFF" TIME: 50 µs
GATE INPUT
TPHOC0044EB
TPHOC0023ED
Dimensional Outlines (Unit: mm)
DETAILS OF INPUT WINDOW
SIGNAL OUTPUT
BNC-R
MOUNTING THREADED HOLE
(4-M3 DEPTH: 10)
MOUNTING THREADED HOLE
(2 × 2-M3 DEPTH: 10)
FRONT VIEW
SIDE VIEW
+2
20 -0
8
WINDOW
PHOTOCATHODE
TOP VIEW
REAR VIEW
WINDOW
55.0 ± 0.5
4.5 ± 0.3
*Internal Connection (Do not use)
+0.5
1.5 - 0
EFFECTIVE
AREA
(H8259, -01: 4 × 20)
(H8259-02: 4 × 6)
17.2 ± 0.5
85.0 ± 0.5
POWER INPUT
HIROSE HR10A-7R-6P
1: GND
2: LOW VOLTAGE INPUT (+5 V)
3: IC*
4: IC*
5: GND
6: GATE
0 V: OPEN, +5 V: CLOSE
+1.0
2.5 -0
6
10.0 ± 0.5
23.0 ± 0.8
5.0 ± 0.5
50.0 ± 0.5
38.0 ± 0.8
8.0 +0.5
-0
95.0 ± 1.0
27.0 ± 0.5
24.0 +0.5
-0
87.0 ± 0.5
R3
EFFECTIVE AREA
(H8259, -01: 4 × 20)
(H8259-02 : 4 × 6)
55.0 ± 0.5 (H8259, -01)
55.0 ± 1.0 (H8259-02)
38.0 ± 0.5
FRONT VIEW
TPMOC0167EA
Power cable with connector (HIROSE HR10A-7P-6S) is supplied with the H8259 series
700 ± 20
BLACK : GND
RED : LOW VOLTAGE INPUT (+5 V)
GREEN: GATE SIGNAL INPUT
(0 V or GND: OPEN, +5 V: CLOSE)
WHITE : NC
BLUE : NC
TPHOA0027EB
57
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