v10308u Hamamatsu Photonics, K.K.,, v10308u Datasheet - Page 13

• Manufacturer Part Number: v10308u
• Description: Image Intensifiers
• Manufacturer: Hamamatsu Photonics, K.K.,

GWIRING DIAGRAM
GWIRING DIAGRAM
Recommended Operation (Example)
Normal Operation
Supply Voltage (See Figure 12.)
NOTE: 1
Gate Operation
Figure 13: Gate Operation
Normally-OFF mode
The V
photocathode, so no image appears on the phosphor screen.
An image appears only when a gate pulse (V
the photocathode.
Photocathode – MCP-in (Vk)
MCP-in – MCP-out (V
MCP-out – Phosphor Screen (Vs)
Clamping method for using a vacuum chamber
with the V
There are two basic circuits for gate operation as shown in Figure 13 below. The supply voltages V
those in normal operation. Gate operation is controlled by changing the bias voltage (V
B
18 mm or
EXAMPLE V
The maximum supply voltage and recommended supply voltage
for the MCP-in and MCP-out are noted on the test data sheet
when the products is delivered. Please refer to the test data
sheet for these values.
0
is constantly applied as a reverse bias to the
PULSE
GENERATOR
GATE ON
PULSE
V
25 mm
B
G
O-RING
=+30 V
=-230 V
VACUUM
CHAMBER
PHOTOCATHODE
V
G
U-07, -08
MCP
LIGHT
C
)
1
R
....1 Stage MCP
...............................150 V to 200 V
2 Stages MCP 1000 V to 1800 V
3 Stages MCP 1500 V to 2700 V
VACUUM FLANGE
V
B
PHOTOELECTRONS
...................5000 V to 6000 V
V
INPUT WINDOW
FIBER OPTIC PLATE
MCP
V
MCP
U-07/-08
C, R: Chose the value in consideration of pulse width and repetition rate.
C: High voltage type.
G
) is applied to
500 V to 1000 V
V
S
TII C0062EA
PHOSPHOR
SCREEN
TII C0018EC
NOTE: A compact high-voltage power supply is available. (See page 15.)
The V
photocathode, so an image is always seen on the phosphor
screen during operation. The image disappears only when a
gate pulse (V
Figure 12: Normal Operation
Normally-ON mode
PHOTOCATHODE
Any electrode (for photocathode, MCP and phosphor screen) can
be connected to ground potential.
B
EXAMPLE V
150 V to 200 V
0
PULSE
GENERATOR
is constantly applied as a forward bias to the
GATE OFF
PULSE
G
) is applied to the photocathode.
V
B
G
PHOTOCATHODE
=-200 V
=+230 V
V
K
B
V
) between the photocathode and MCP-in.
G
1 Stage MCP 500 V to 1000 V
2 Stages MCP 1000 V to 1800 V
3 Stages MCP 1500 V to 2700V
MCP (1 TO 3 STAGE)
LIGHT
C
R
V
MCP
GREEN
V
PHOTOELECTRON
B
MCP
VIOLET
and Vs are the same as
MCP
V
V
MCP
S
1
PHOSPHOR
1
1
SCREEN
5000 V to 6000 V
BLACK
V
S
RED
PHOSPHOR
SCREEN
TII C0017ED
TII C0019EE
12