A: Averaged over any interval of 30 seconds maximum.

B: The light source is a tungsten filament lamp operated at

a distribution temperature of 2856K. Supply voltage is

100 volts between the cathode and all other electrodes

connected together as anode.

C: Red/White ratio is the quotient of the cathode current

measured using a red filter (Toshiba R-68) interposed

between the light source and the tube by the cathode

current measured with the filter removed under the same

conditions as Note B.

D: 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 B.

E: Measured with the same light source as Note B and with

the voltage distribution ratio shown in Table 1 below.

F: Measured with the same supply voltage and voltage

distribution ratio as Note E after removal of light.

G: The rise time is the time for the output pulse to rise from

10 % to 90 % of the peak amplitude when the entire

photocathode is illuminated by a delta function light

pulse.

H: 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 amplitube. In measurement, the whole

photocathode is illuminated.

I : Also called transit time jitter. This is the fluctuation in

electron transit time between individual pulses in the

single photoelectron mode, and may be defined as the

FWHM of the frequency distribution of electron transit

times.

J : Hysteresis is temporary instability in anode current after

light and voltage are applied.

(1)Light Hysteresis

The tube is operated at 750 volts with an anode

current of 1 microampere for 5 minutes. The light is

then removed from the tube for a minute. The tube is

then re-illuminated by the previous light level for a

minute to measure the variation.

(2)Voltage Hysteresis

The tube is operated at 300 volts with an anode

current of 0.1 micro-ampere for 5 minutes. The light is

then removed from the tube and the supply voltage is

quickly increased to 800 volts. After a minute, the

supply voltage is then reduced to the previous value

and the tube is re-illuminated for a minute to measure

the variation.

PHOTOMULTIPLIER TUBE R9220

NOTES

SPECIFICATIONS

Hysteresis =

× 100(%)

lmax. – lmin.

li

TPMSB0002EA

TIME

max.

l

min.

l

i

l

0

5

6

7 (minutes)

Electrodes

K

Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9

P

Ratio

1

111

1

1

1111

SuppIy Voltage: 1000 V, K: Cathode, Dy: Dynode, P: Anode

Table 1: Voltage Distribution Ratio

GENERAL

MAXIMUM RATINGS (Absolute Maximum Values)

CHARACTERISTlCS (at 25

°C)

Value

1250

250

0.1

V

V

mA

Unit

Parameter

Supply

Voltage

Typ.

Max.

Unit

—

—

—

—

—

—

—

—

—

—

50

—

—

—

—

—

%

%

%

µA/lm

mA/W

mA/W

—

—

A/lm

A/W

—

nA

ns

ns

ns

%

%

26.3

23.4

13.3

450

85

68

0.4

12.5

4500

8.5

1.0

10

2.2

22

1.2

0.1

1.0

Min.

Quantum

Efficiency

Radiant

Radiant at 450 nm (peak)

Light Hysteresis

Voltage Hysteresis

at 260 nm

at 450 nm

at 633 nm

at 450 nm

at 633 nm

—

—

—

375

—

—

—

—

1000

—

—

—

—

—

—

—

Parameter

Cathode

Sensitivity

Anode

Sensitivity

(After 30 min Storage in Darkness)

Time

Response

Anode Current

Between Anode and Cathode

Between Anode and Last Dynode

Parameter

Description/Value

Unit

Spectral Response

Wavelength of Maximum Response

Photocathode

Window Material

Dynode

Direct

Interelectrode

Capacitances

Base

Weight

Operating Ambient Temperature

Storage Temperature

SuitabIe Socket

SuitabIe Socket Assembly

185 to 900

450

Multialkali

8

× 24

UV glass

Circular-cage

9

4

6

11-pin base JEDEC No. B11-88

Approx. 45

-30 to +50

-30 to +50

E678–11A (Sold Separately)

E717–63 (Sold Separately)

nm

nm

—

mm

—

—

—

pF

pF

—

g

°C

°C

—

—

MateriaI

Minimum Effective Area

Structure

Number of Stages

Anode to Last Dynode

Anode to All Other

Electrodes