FLAT PANEL TYPE

MULTIANODE PHOTOMULTIPLIER TUBE ASSEMBLY H8500, H8500B

NOTES

A:

B:

C:

D:

E:

F:

G:

H:

The light source is a tungsten filament lamp operated at a distribution temperature of 2856 K. Supply voltage is 150 volts between the cathode and

all other electrodes connected together as anode.

The value is cathode output current when a blue filter(corning CS 5-58 polished to 1/2 stock thickness) is interposed between the light source and

the tube under the same condition as Note A.

Measured with the same light source as Note A and with the anode-to-cathode supply voltage and voltage distribution ratio shown in Table 1 below.

Measured with the same supply voltage and voltage distribution ratio as Note C after 30 minute storage in darkness.

Those are test data when a signal from a central channel of 64 anodes is used, while all photocathode are illuminated by pulsed light source.

The rise time is the time for the output pulse to rise from 10 % to 90 % of the peak amplitude when the whole photocathode is illuminated by a delta

function light pulse.

The electron transit time is the interval between the arrival of delta function light pulse at the entrance window of the tube and the time when the

anode output reaches the peak amplitude. In measurement, the whole photocathode is illuminated.

Also called transit time jitter. This is the fluctuation in electron transit time between individual pulses in the single photoelectron event, and defined

as the FWHM of the frequency distribution of electron transit time.

Table 1: Voltage Distribution Ratio and Supply Voltage

Figure 1: Typical Spectral Response

Figure 2: Typical Gain Characteristics

CHARACTERISTICS (at 25

°C)

Parameter

Min.

Unit

Cathode Sensitivity

Anode Sensitivity

Pulse Linearity per Channel (

±2 % deviation)

Uniformity (Condition Figure 3)

Cross-talk

Quantum Efficiency at 420 nm

50

8.0

—

—

0.5

—

—

—

—

—

—

—

—

60

9.5

24

90

1.5

0.1

6

0.8

6

0.4

1

1: 2

3

µA/lm

—

%

A/lm

—

nA

nA

ns

ns

ns

mA

—

%

—

—

—

—

—

—

50

—

—

—

—

1: 4

—

Typ.

Max.

Supply Voltage: -1000 V, K: Cathode, Dy: Dynode, GR: Guard Ring P: Anode

Electrodes

Distribution Ratio

K

Dy1

1

Dy2

1

Dy3

1

Dy4

1

Dy5

1

Dy6

1

Dy7

11

Dy8

Dy9

Dy10 Dy11 Dy12

GR

P

1

1

1

1

0.9

0.1

TPMHB0695ED

TPMHB0696EC

100

10

1

0.1

0.01

200

300

400

500

WAVELENGTH (nm)

600

700

800

CATHODE

RADIANT

SENSITIVITY

QUANTUM

EFFICIENCY

700

800

900

1000

SUPPLY VOLTAGE (V)

1100