Pulsed electron source characterization with the modified three gradient method

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Results from the Modified Three Gradient Method (MTGM), applied to a pulsed high intensity electron source, are presented. The MTGM makes possible the non-destructive determination of beam emittance in the space charge presence [1]. We apply the MTGM to an experimental system equipped with a Pierce convergent diode, working in pulse mode, and having a directly heated cathode as electron source. This choice was mainly motivated by the availability of an analytical characterization of this source type [2], as well as the extended use of the Pierce type sources in linear accelerators. The experimental data are processed with a numerical matching program, based on the K-V equation for an axially symmetric configuration [3], to determine the emittance and object cross-over position and diameter. The variation of these parameters is further investigated with respect to both electrical and constructive characteristics of the source: cathode heating current, extraction voltage, and cathode-anode distance.
Paper THAP068, ICALEPCS 2001, PDF

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Accelerator Physics, Instrumentation and Detectors

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http://salesiana.dossiersoluciones.com/handle/123456789/84399

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/physics/0111099
 http://arxiv.org/abs/physics/0111099

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arXiv