Longitudinal Space Charge Effects in Bunched Electron Beams Travelling through a Malmberg-Penning Trap

Autor: M. Romé, F. Cavaliere, M. Cavenago, F. De Luca, G. Maero, B. Paroli, R. Pozzoli, Giuseppe Bertin, Franca De Luca, Giuseppe Lodato, Roberto Pozzoli, Massimiliano Romé
Rok vydání: 2010
Předmět:
Zdroj: AIP Conference Proceedings.
ISSN: 0094-243X
DOI: 10.1063/1.3460148
Popis: Nanosecond pulsed electron beams in the 1–10 keV energy range have been characterized by means of an electrostatic diagnostic in the Malmberg‐Penning trap ELTRAP. The beam length has been inferred through the numerical analysis of the signals measured across the overall load impedance of a planar charge collector. The presence of space charge effects leading to a longitudinal spread of the beam during its transport are evidenced at low injection energies. This feature has also been tested with the use of a one‐dimensional fluid model and with two‐dimensional, cylindrically‐symmetric Particle‐In‐Cell simulations, whose results are compared to the experimental observations.
Databáze: OpenAIRE