7817

Ten-stage two-inch end-on S-11 photomultiplier designed for scintillation counting, spectroscopy, photometry, and flying-spot scanners. Its dynode chain provides high gain for weak optical or scintillation signals.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: B14-38
Socket code: -
Base pins: 14
Nominal heater: -

Description

10-stage 2-inch end-on S-11 photomultiplier for scintillation counting, spectroscopy, photometry and flying-spot scanners.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: B14-38
Socket code: -
Base pins: 14
Nominal heater voltage: -
Nominal heater current: -
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

B14-38 - 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

Photomultiplier

X-ray radiationInterelectrode capacitances

Max plate voltage: 2000 V
Max plate dissipation: 1 W

Photomultiplier; 2000 V maximum anode-to-cathode supply and 1 W average anode dissipation.

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

1960 CBS Hytron

Published operating points and test conditions from this source.

SECTION 1

Photomultiplier

Other

Anode-cathode supply voltage maximum
2000 V
Last dynode-anode voltage maximum
250 V
Cathode-first dynode voltage maximum
400 V
Cathode-focusing electrode voltage maximum
400 V
Average anode current maximum
5 mA

Characteristics

Cathode luminous sensitivity
80 uA/lm
Average
Current amplification
170000 ratio
Va-k=1250V