Datasheet

Metal package PMT with Cooler
Photon Counting Head H7421 Series
The H7421 series is a photon counting head device containing a metal package photomultiplier tube having a GaAsP/GaAs photocathode and a thermoelectric cooler. The thermoelectric cooler reduces thermal noise generated
from the photocathode which also offers a high quantum efficiency, allowing
measurement to be made with a good S/N ratio even at very low light levels.
The H7421-40 has high sensitivity on wavelength from 300 nm to 720 nm.
The H7421-50 is sensitive over a wide spectral range from 380 nm to 890 nm.
The photomultiplier tube is maintained at a constant temperature by monitoring the output from a thermistor installed near the photomultiplier tube and
regulating the current to the thermoelectric cooler.
Heatsink with fan (A7423) sold separately
Product Variations
Type No.
H7421-40
H7421-50
Spectral Response
300 nm to 720 nm
380 nm to 890 nm
Features
GaAsP photocathode, QE 40 % at peak wavelength
GaAs photocathode, QE 12 % at peak wavelength
This product can't be used at vacuum environment or reduced pressure environment.
Specifications
Parameter
Input Voltage
Max. Input Voltage for Main Unit
Max. Input Current for Main Unit
Max. Input Voltage for Thermoelectric Cooler
Max. Input Current for Thermoelectric Cooler
Effective Area
Peak Sensitivity Wavelength
420 nm
550 nm
Count Sensitivity Typ.
800 nm
Count Linearity *1
Typ.
Dark Count *2 *3
Max.
Pulse-pair Resolution
Output Pulse Width
Min.
Output Pulse Height *4
Typ.
Recommended Load Resistance
Signal Output Logic
Operating Ambient Temperature *5
Storage Temperature *5
Weight
H7421-40
H7421-50
+4.5 to +5.5
+6
50
2.6
2.2
5
580
4.7 × 105
7.6 × 105
—
1.5 × 106
100
300
800
6.5 × 104
2.1 × 105
3.9 × 105
1.5 × 106
125
375
70
30
3.0
3.6
50
Positive logic
+5 to +35
-20 to +50
340
Unit
V
V
mA
V
A
mm
nm
s-1·pW-1
s-1
s-1
ns
ns
V
Ω
—
°C
°C
g
*1: Random pulse, at 10 % count loss
*2: PMT setting temperature 0 °C, used with C8137, M9011 and A7432
*3: After 30 minutes storage in darkness
*4: With input voltage +5 V, Load resistance 50 Ω and Coaxial cable RG-174/U (450 mm)
*5: No condensation
Cooling Specifications
Parameter
Cooling Method
Max. Cooling Temperature (∆T) *6
Cooling Time *6
*6: Input current to thermoelectric cooler = 2 A
52
H7421-40 / H7421-50
Thermoelectric cooling
35
Approx. 5
Unit
—
°C
min
Photon Counting Heads
Characteristics (Count sensitivity, Dark count)
106
TPHOB0042ED
TPHOB0046EB
1000
H7421-40
DARK COUNT (s-1)
COUNT SENSITIVITY (s-1·pW-1)
H7421-50
105
104
H7421-50 (when used
with C8137, A7423)
100
103
10
H7421-40 (when used wih C8137, A7423)
5
10
15
20
25
30
35
40
45
AMBIENT TEMPERATURE (°C)
102
300
400
500
600
700
800
900
1000
WAVELENGTH (nm)
Block Diagram
POWER INPUT for
THERMOELECTRIC
COOLER
THERMISTOR
AMP
COMPARATOR
PULSE
SHAPER
OUTPUT
+
THERMOELECTRIC
COOLER
TO
PULSE COUNTER
–
PMT
LLD
HV POWER SUPPLY /
VOLTAGE DIVIDER
CIRCUIT
RL = 50 Ω
POSITIVE
LOGIC
GND
+5 V
POWER INPUT
TPHOC0042EG
Dimensional Outlines (Unit: mm)
POWER INPUT
TAJIMI PRC03-23A10-7M
THREADED HOLE
for A7423 (8-M3 DEPTH: 2)
ACROSS SECTION
PHOTOCATHODE
5
THREADED HOLE
for A7412 (4-M2 DEPTH: 2)
56.0 ± 0.3
PHOTOCATHODE
5
A
8-M3C
20.0 ± 0.2
20.0 ± 0.2
36.0 ± 0.3
9.5 ± 0.1
FRONT VIEW
53.6 ± 0.2
TOP VIEW
MOUNTING THREADED
HOLE (4-M3B)
44.0 ± 0.2
25.4 ± 0.2
M25.4 P = 1/32"
C-MOUNT
SIGNAL OUTPUT
BNC-R
7.2
10.2
M25.4 P=1/32"
C-MOUNT
PMT
4.0 ± 0.1
15.0 ± 0.2
O-RING GROOVE
(S-28 O-RING INCLUDED)
18.5 ± 0.2
22.2 ± 0.2
26.0 ± 0.2
WINDOW
6.4 ± 0.2
7.4 ± 0.2
14.8 ± 0.2
16.3 ± 0.2
CCROSS SECTION
BCROSS SECTION
6.5 ± 0.2
2.0
± 0.2
M3
DEPTH: 4.0 Max.
M3
DEPTH: 4.0 Max.
GUIDE MARK
16.3 ± 0.2
F
19.0 ± 0.2 25.0 ± 0.2
104 ± 1
SIDE VIEW
A
E G
D
B
C
A: THERMISTOR 1
B: THERMISTOR 2
C: PELTIER ELEMENT +
D: PELTIER ELEMENT –
E: LOW VOLTAGE
INPUT(+5 V)
F: IC*
G: GND
*IC: Internal Connection (Do not use)
TAJIMI PRC03-23A10-7M
TPHOA0021ED
53
Metal package PMT with Cooler
Options for H7421 Series
1
SOLD SEPARATELY
POWER SUPPLY UNIT
with TEMPERATURE
CONTROL M9011
Vcont
CHK2
Vcont-ADJ
Don't use
CHK3
CHK4
CN04
6
CN5
INPUT
12 V
1
CABLES
(Included with M9011
or C8137)
GND
2
CHK1
OPTICAL
FIBER
OPTICAL FIBER
ADAPTER
A7412
HEATSINK with FAN
A7423
2345
SW2
CN03
CN01
4
ON
SW1
6
POWER SUPPLY UNIT
with TEMPERATURE CONTROL
C8137
DIRECT INPUT
5
SAMPLE
C-MOUNT
LENS
C-MOUNT
ADAPTER
A7413
PHOTONCOUNTING HEAD
H7421 SERIES
3
INPUT
AC 100 V to
AC 240 V
ON
SIGNAL CABLE
E1168-05
ON
COUNTER
● Heatsink with Fan A7423
● Signal Cable E1168-05
The temperature of the H7421 outer case rises due to the
thermoelectric cooler housed in the case. The A7423 heatsink
efficiently radiates away this heat to prevent a temperature
rise in the H7421. The A7423 can be easily installed onto the
H7421 with four M3 screws. Apply a coat of heat conductive
grease onto the joint surface shared by the H7421 and
A7423.
Parameter
Value
Unit
Input Voltage
V
12
During Lock
mA
140
Input Current
mA
90
During Operation
V
10.2 to 13.8
Operating Voltage
g
120
Weight
This signal cable comes attached to a BNC connector for
easily connecting the H7421 to external equipment.
● Power Supply Unit with Temperature Control M9011
The M9011 is an on-board type power supply unit.
By just connecting to 12 V supply, the M9011 provides power
necessary to operate the H7421 series. The M9011 also
controls the thermoelectric cooler in the H7421 series so that
the output and noise can be maintained at constant levels
even when the ambient temperature changes. The
thermoelectric cooler and PMT operation can be controlled
from an external device by connecting it to the I/O connector
on the M9011.
Parameter
Description / Value
35
Max. Cooling Temperature (∆T)
12
Input Voltage
1.2
Max. Input Current
15.8
Max. Power Consumption
5
Main Circuit Output Voltage
2.2
Max. Output Current for Thermoelectric Cooler
12
Output Voltage for Fan
Thermoelectric Cooler Non-insulated TTL level input
Control Signal
PMT
Non-insulated TTL level input
Input Voltage
Fan
Non-insulated TTL level input
Error Signal Thermoelectric
Non-insulated TTL level output
Output Voltage Cooler
PMT
5
LED Output
Error
5
0
Setting Cooling Temperature
120
Weight (excluding cables)
54
TPHOC0040EE
Unit
°C
V
A
V·A
V
A
V
—
—
V
°C
g
● Optical Fiber Adapter (FC Type) A7412
The A7412 is an FC type optical fiber connector that attaches
to the light input window of the H7421. The A7412 can easily
be secured in place with four M2 screws.
● C-mount Adapter A7413
The A7413 mount adapter is used when a C-mount lens protruding 4 mm or more from the flange-back must be installed
onto the H7421.
● Power Supply Unit with Temperature Control C8137
The C8137 is a power supply unit with a temperature control
function. Just connecting to an AC source of 100 V to 240 V
generates the output voltages for the thermoelectric cooler
and the A7423 fan, needed for operating the H7421. The photomultiplier tube temperature can be maintained to 0 °C by
monitoring the thermistor and regulating the output current for
the thermoelectric cooler.
Parameter
Max. Cooling Temperature (∆T)
Setting Cooling Temperature
(preset at factory)
AC Input Voltage
Input Voltage Frequency
Power Consumption
Main Circuit Output Voltage
Max. Current for Thermoelectric Cooler
Output Voltage for Fan
Weight
Value
35
Unit
°C
0
°C
100 to 240
50 / 60
30
+5
2.2
12
1
V
Hz
V·A
V
A
V
kg
Photon Counting Heads H7421 Series
Options (Unit: mm)
4 Optical Fiber Adapter (FC Type) A7412
1 Heatsink with Fan A7423
4- 2.2
4 TAPERED DEPTH 1.5
M8 P=0.75
2.5
52.0 ± 0.5
16.5 ± 0.3 22.2 ± 0.2
LEAD LENGTH 50 ± 10
3.0
9.5
5.5 3
4-M2 L=3
15
FRONT VIEW
LIGHT SHIELD SHEET
(THICKNESS: 0.5)
9
SIDE VIEW
TOP VIEW
TACCA0190EB
4-M3 (SUPPLIED)
SIDE VIEW
TACCA0188ED
M25.4 P=1/32" C-MOUNT
30
JST XMR-02V
92.0 ± 0.5
22
53.6 ± 0.3
8
M25.4 P=1/32" C-MOUNT
19.2 ± 0.3
40 ± 1
24.5 ± 0.5
5 C-mount Adapter A7413
4
14
TACCA0191EA
2 Power Supply Unit with Temperature Control M9011
4-M2
15.0 ± 0.1
70.0 ± 0.1
6 Power Supply Unit with Temperature Control C8137
28.0 ± 0.2
POWER
50.0 ± 0.2
SW1
ON
CN03
2345
CHK2
GND
Vcont
CHK3
ON
160.0 ± 0.5
CN04
CN5
CHK1
ON
CHK4
Don't use
FRONT VIEW
Vcont-ADJ
46.0 ± 0.5
5.0 ± 0.1
100.0 ± 0.3
42
1
SW2
8
CN01
6
40.0 ± 0.1
PHOTOSENSOR SWITCH
FAN CABLE
212 ± 1
1500 ± 50
12.5
SIDE VIEW
MODULE OUTPUT
AC INPUT
MODULE CABLE
1500 ± 50
POWER CABLE
FAN OUTPUT
EXTERNAL
I/O CABLE
FUSE
REAR VIEW
1000 ± 50
POWER CABLE
1000 ± 50
+50
1500 -0
EXTERNAL
I/O HOUSING
FAN CABLE
+50
1500 -0
TACCA0252EA
AC CABLE
1800 to 2000
3 Signal Cable E1168-05
BNC-P
+50
0
1500 -
TACCA0237EB
BNC-P
TACCA0148EA
55
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