For Scintillation Counting, Fast Time Response

76mm(3 Inch) Diameter, Bialkali Photocathode, 12–Stage Head–On Type

GENERAL

Parameter

Description / Value

Unit

Spectral Response

300 to 650

nm

Wavelength of Maximum Response

420

nm

Photocathode

MateriaI

MateriaI

Shape

Bialkali

Structure

Number of Stages

Minimum Effective Area

65

mm dia.

Window

Borosilicate glass

Dynode

Suitable Socket

Plano–concave

Linear focused

12

E678–21A (supplied)

MAXIMUM RATINGS (Absolute Maximum Values)

Parameter

Value

Supply Voltage

Between Anode and Cathode

2500

Unit

Vdc

mA

Average Anode Current

0.2

CHARACTERISTlCS (at 25

)

Parameter

Max.

Typ.

Min.

Cathode

Sensitivity

Gain

Anode Dark Current (after 30min. storage in darkness)

Radiant at 420nm

Radiant at 420nm

Blue (CS–5–58 filter)

A/lm

A/lm

A/lm b

A/W

mA/W

Anode Pulse Rise Time

2.6

ns

nA

Transit Time Spread (FWHM)

at 2% Deviation

at 5% Deviation

Electron Transit Time

90

85

10.5

450

60

9.0

50

Time Response

Pulse Linearity

Anode Sensitivity

48

2.0

80

110

10

60

Unit

ns

ns

mA

mA

4.3

Luminous (2856K)

Luminous (2856K)

Anode characteristics are measured with the voItage distribution ratio shown below.

NOTE:

Electrodes

K

Dy1

G

Dy2

Dy3

Dy4

Dy5

Dy6

Dy7

Dy8

Dy9

Dy10 Dy11

Dy12

P

Ratio

4

0

1

1.4

1

11

1

11

1

1

1

1

SuppIy Voltage : 1500Vdc,

K : Cathode,

Dy : Dynode,

P : Anode,

G : Grid

VOLTAGE DlSTRlBUTlON RATlO AND SUPPLY VOLTAGE

Electrodes

K

Dy1

G

Dy2

Dy3

Dy4

Dy5

Dy6

Dy7

Dy8

Dy9

Dy10 Dy11

Dy12

P

Ratio

4.3

0

1

1.6

1

11

1

1

1

1.6

2

3.3

2

SuppIy Voltage : 2000Vdc,

K : Cathode,

Dy : Dynode,

P : Anode,

G : Grid

SPECIAL VOLTAGE DlSTRlBUTlON RATlO FOR PULSE LINEARITY MEASUREMENTS

PHOTOMULTlPLlER TUBE

R6091

lnformation furnished by HA MAM ATS U is believed to be reliabIe. However, no responsibility is assumed for possibIe inaccuracies or commission. Specifications are

subjected to change without notice. No patent right are granted to any of the circuits described herein.

Subject to local technical requirements and regulations, availability of products included in this promotional material may var y. Please consult with our sales office.