About SciDoc
Document Search

DOCUMENT METADATA
SLAC Publication: SLAC-PUB-16124
SLAC Release Date: October 21, 2014
Generation of Stable Sub-femtosecond Hard X-ray pulses with Optimized Nonlinear Bunch Compression
Huang, Senlin.
In this paper, we propose a simple scheme that leverages existing x-ray FEL hardware to produce stable single-spike, sub-femtosecond x-ray pulses. By optimizing a high-harmonic radio-frequency linearizer to achieve nonlinear compression of a low charge (20 pC) electron beam, we obtain a sharp current profile possessing a few-fs full width at half maximum temporal duration. A reverse undulator taper is applied to enable lasing only within the current spike, where longitudinal space charge forces ... Show Full Abstract
In this paper, we propose a simple scheme that leverages existing x-ray FEL hardware to produce stable single-spike, sub-femtosecond x-ray pulses. By optimizing a high-harmonic radio-frequency linearizer to achieve nonlinear compression of a low charge (20 pC) electron beam, we obtain a sharp current profile possessing a few-fs full width at half maximum temporal duration. A reverse undulator taper is applied to enable lasing only within the current spike, where longitudinal space charge forces induce an electron beam time-energy chirp. Simulations based on the Linac Coherent Light Source parameters show that stable single-spike x-ray pulses with a duration less than 200 attoseconds can be obtained. Show Partial Abstract
Download File:
  • Interest Categories: Accelerator Physics, X-Ray Free Electron Laser