Baspik > Products > Detectors > Open Detectors > Detectors for Quantitative Dignal Measurement > SEM-7B Secondary Electron Multiplier

SEM-7B Secondary Electron Multiplier

SEM-7B secondary electron multiplier with 25 mm active area diameter is intended for the detection of particulate and other short-wavelength electromagnetic radiation fluxes as part of scientific and industrial equipment, including space instruments.

Rimmed microchannel plates 25-10A MCPs with 33 mm overall diameter, 25 mm active area diameter and 10 µm channel diameter are used in this device.

Specification

Schematic diagram

Basic parameters

Parameter, unit	Value
Parameter, unit	min	max
Supply voltage at ≥ 1×10⁷ gain, V		2300
Single electron pulse height resolution, %		120
Dark count rate density, count/sec×cm²		3

Overall dimensions

Parameter	Unit	Value
Maximum diameter	mm	50
Input window area	cm²	5

Reference data

Parameter	Unit	Value
Pulse leading edge rise time	ns	0.6–0.7
Full width at half maximum (FWHM)	ns	1.5–2