45

Block Diagram

Gate Timing Chart

Photon Counting Heads

TPHOC0023EC

TPHOC0044EB

TPHOA0027EB

TPMOC0167EA

PMT

COMPARATOR

PULSE

SHAPER

+

-

HV POWER SUPPLY

VOLTAGE DIVIDER

CIRCUIT

Vref

50

Ω

OUTPUT

+5 V

POWER INPUT

GND

GATE INPUT

AMP

POSITIVE

LOGIC

TO

PULSE

COUNTER

19.0

± 0.5

- 0

R3

FRONT VIEW

SIDE VIEW

REAR VIEW

C1

4-M3 DEPTH: 10

2

× 2-M3 DEPTH: 10

POWER INPUT

HIROSE HR10A-7R-6P

EFFECTIVE AREA

(H8259, -01: 4

× 20)

(H8259-02 : 4

× 6)

SIGNAL OUTPUT

BNC-R

POWER CABLE WITH CONNECTOR (HIROSE HR10A-7P-6S) IS SUPPLIED WITH THE H8259 SERIES

50.0

± 0.5

38.0

± 0.5

27.0

± 0.5

10.0

± 0.5

1: GND

2: Vcc +5 V

3: IC*

4: IC*

5: GND

6: GATE

0 V: OPEN, 5 V: CLOSE

*Internal Connection (Do not use)

700

± 20

BLACK

RED

GREEN

: GND

: LOW VOLTAGE INPUT (+5 V)

: GATE SIGNAL INPUT

(0 V or GND: OPEN, 5 V: CLOSE)

50

µs to

∞

100

µs to

∞

GATE SIGNAL

INPUT

+3.5 V to +5 V at 1 k

Ω

PMT

OPERATION

ON

OFF

0 V

DELAY TIME:

600 ns MAX.

MIN. GATE "OFF" TIME: 50

µs

DELAY TIME:

500 ns MAX.

WINDOW

EFFECTVE

AREA

(H8259, -01: 4

× 20)

(H8259-02: 4

× 6)

2.5

+1.0

-0

1.5

+0.5

-0

8

PHOTOCATHODE

WINDOW

TOP VIEW

FRONT VIEW

TPHOB0023EE

TPHOB0024ED

WAVELENGTH (nm)

200

100

300

400

600

700

800

900

500

H8259-02

H8259

H8259-01

AMBIENT TEMPERATURE (

°C)

10

20

30

40

H8259-02

H8259-01

H8259