Data di Pubblicazione:
2007
Citazione:
Generation of short THz bunch trains in a RF photoinjector / M. Boscolo, M. Ferrario, I. Boscolo, F. Castelli, S. Cialdi. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 577:3(2007), pp. 409-416.
Abstract:
A radiofrequency electron gun joined to a compressor can generate trains of THz sub-picosecond electron pulses by illuminating the photocathode with trains of laser pulses. Assuming a prompt electron emission, each laser pulse generates an electron disk at the cathode. The disk train evolves toward a slightly modulated slug having a peculiar sawtooth energy modulation. This kind of energy modulation is transformed into a density modulation within a velocity-bunching compressor recovering at a good extent the initial multi-disk profile. The electron beam evolution is analyzed through simulations looking at its features as function of pulse and frequency characteristics of the laser and of the accelerator parameters.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
electron pulse trains; laser; photoemission; Rf gun; space-charge; RF compressor
Elenco autori:
M. Boscolo, M. Ferrario, I. Boscolo, F. Castelli, S. Cialdi
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