Analysis of space charge fields using Lienard–Wiechert potentials and the method of images in the RF-free electron laser photoinjectors
| Autor: | Wa'el Salah, J.-L. Coacolo, Roger Jones |
|---|---|
| Přispěvatelé: | Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2009 |
| Předmět: |
Nuclear and High Energy Physics
Charges image Field (physics) Physics::Instrumentation and Detectors Accelerated Electron Beam Method of image charges 7. Clean energy 01 natural sciences Photocathode law.invention [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph] Physics::Plasma Physics Method of images law 0103 physical sciences 010306 general physics Instrumentation Physics 010308 nuclear & particles physics Free-electron laser Space charge Cathode Lienard–Wiechert retarded potentials Physics::Accelerator Physics Atomic physics Photoinjector Beam (structure) |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2009, 607, pp.498-504. ⟨10.1016/j.nima.2009.05.188⟩ |
| ISSN: | 0168-9002 |
| DOI: | 10.1016/j.nima.2009.05.188 |
| Popis: | Based on Lienard–Wiechert retarded potentials and the potential due to a beam-induced image charge on the cathode, a rigorous relativistic description of a beam transport inside an RF-photoinjector is presented. Velocity-dependent effects are explicitly taken into account. Simulations are presented for parameters appropriate to the ELSA photocathode where velocity-dependent effects are particularly important. These simulations reveal that at the center of the cathode ( r =0, z =0) the beam's self-field and the field driven by the charges image on the cathode are equal. However, the self-field of the beam is dominated by the field due to the charges image on the cathode as one moves from the tail to the head of the beam. Far from the cathode, the self-field becomes the dominant one. |
| Databáze: | OpenAIRE |
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