Dm. Khazins, ELECTRONIC NOISE CALCULATIONS FOR A FAST CURRENT-AMPLIFIER WITH A WAVE-GUIDE LINE AT ITS INPUT, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 330(1-2), 1993, pp. 316-319
A formula is deduced for the electronic noise of a fast current amplif
ier with a waveguide line at its input and an integrator at the output
. For the case of a short line the result is the same as if there was
a capacitor of the line capacitance at the amplifier input instead of
the line. However, as soon as the line delay-time exceeds half of the
integration time, the integrated noise charge ceases to depend on any
of the waveguide line parameters. The calculations are compared with m
easurements.