skip to main content

SciTech ConnectSciTech Connect

Title: Short wavelength limits of current shot noise suppression

Shot noise in electron beam was assumed to be one of the features beyond control of accelerator physics. Current results attained in experiments at Accelerator Test Facility in Brookhaven and Linac Coherent Light Source in Stanford suggest that the control of the shot noise in electron beam (and therefore of spontaneous radiation and Self Amplified Spontaneous Emission of Free Electron Lasers) is feasible at least in the visible range of the spectrum. Here, we present a general linear formulation for collective micro-dynamics of e-beam noise and its control. Specifically, we compare two schemes for current noise suppression: a quarter plasma wavelength drift section and a combined drift/dispersive (transverse magnetic field) section. We examine and compare their limits of applicability at short wavelengths via considerations of electron phase-spread and the related Landau damping effect.
Authors:
 [1] ; ;  [2]
  1. Faculty of Exact Sciences, Department of Physics, Tel Aviv University, Tel Aviv (Israel)
  2. Faculty of Engineering, Department of Physical Electronics, Tel Aviv University, Tel Aviv (Israel)
Publication Date:
OSTI Identifier:
22303598
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPARATIVE EVALUATIONS; CONTROL; CURRENTS; ELECTRON BEAMS; ELECTRONS; FREE ELECTRON LASERS; LANDAU DAMPING; LINEAR ACCELERATORS; MAGNETIC FIELDS; NOISE; WAVELENGTHS