FW100

Coaxial S-4 phototube designed for fast detection and measurement of nuclear radiation through optically coupled radiation-conversion systems. Its fast photoelectric response supports time-sensitive radiation instrumentation.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

ITT Laboratories FW100 is a coaxial s-4 phototube for fast detection and measurement of nuclear radiation.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: -
Nominal heater current: -
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

PhotoemissiveDetector

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Coaxial photodiode; photosensitivity and dark-current data retained as parameters.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1962 ITT

Published operating points and test conditions from this source.

SECTION 1

PhotoemissiveDetector

Characteristic

Cathode type
S-4
Nominal output impedance
50 ohm

Other

Cathode luminous sensitivity
30 uA/lm
Cathode radiant sensitivity at 4000 A
0.029 uA/uW
Maximum dark current at 6 kV
0.00001 mA
Nominal operating anode voltage
6000 V

Application

Application
Nuclear-radiation detection

Construction

Geometry
Coaxial diode