Ruggedized, High Temperature (175

°C) PMT for Oil Well Logging

51 mm (2 Inch) Diameter, 10-Stage, Head-on Type

CHARACTERISTICS (at 25

°C)

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subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2010 Hamamatsu Photonics K.K.

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GENERAL

MAXIMUM RATINGS (Absolute Maximum Values)

PHOTOMULTIPLIER TUBE

R4607A-01

Parameter

Min.

Unit

Cathode Sensitivity

Anode Sensitivity

Gain

Anode Dark Current (after 30 min storage in darkness)

Time Response

Luminous (2856 K)

Radiant at 375 nm

Blue Sensitivity Index (CS 5-58)

Luminous (2856 K)

Radiant at 375 nm

Anode Pulse Rise Time

Electron Transit Time

20

—

4

5

—

—

—

—

—

40

51

6

20

2.5

5

3*

2.2

28

µA/lm

mA/W

—

A/lm

A/W

—

nA

ns

ns

—

—

—

—

—

—

20

—

—

Typ.

Max.

Parameter

Unit

Spectral Response

Wavelength of Maximum Response

Photocathode

Window Material

Dynode

Operating Ambient Temperature

Storage Temperature

Base

Suitable Socket

MateriaI

Minimum Effective Area

Structure

Number of Stages

300 to 650

375

High temp. bialkali

46

Borosilicate glass

Circular and Linear-focused

10

-30 to +175

-80 to +175

15-pin glass base

E678-15C (supplied)

nm

nm

—

mm

—

—

—

°C

°C

—

—

Description / Value

Parameter

Unit

Supply Voltage

Average Anode Current

Between Anode and Cathode

Between Anode and Last Dynode

1800

250

0.2

V

V

mA

Value

* 1.5

µA at 175 °C

VOLTAGE DlSTRlBUTlON RATlO AND SUPPLY VOLTAGE

Supply Voltage: 1500 V dc, K: Cathode, Dy: Dynode, P: Anode

Electrodes

Ratio

K

Dy1

2

Dy2

1

Dy3

1

Dy4

Dy5

1

Dy6

1

Dy7

11

Dy8

Dy9

Dy10

P

11

11

ENVIRONMENTAL TESTING

±1 ms, 3 impact shocks per direction (6 directions)

(Only initial production tubes are tested)