Beam Echo Effect for Generation of Short-Wavelength Radiation

Conference · Wed Dec 09 04:00:00 EST 2009

OSTI ID:969264

Stupakov, G

The Echo-Enabled Harmonic Generation (EEHG) FEL uses two modulators in combination with two dispersion sections to generate a high-harmonic density modulation starting with a relatively small initial energy modulation of the beam. After presenting the concept of the EEHG, we address several practically important issues, such as the effect of coherent and incoherent synchrotron radiation in the dispersion sections. Using a representative realistic set of beam parameters, we show how the EEHG scheme enhances the FEL performance and allows one to generate a fully (both longitudinally and transversely) coherent radiation. We then discuss application of the echo modulation for generation of attosecond pulses of radiation, and also using echo for generation of terahertz radiation. We present main parameters of a proof-of-principle experiment currently being planned at SLAC for demonstration of the echo modulation mechanism.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 969264
• Report Number(s): SLAC-PUB-13819
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
Accelerators
ACCPHY
XFEL
COHERENT RADIATION
FREE ELECTRON LASERS
HARMONIC GENERATION
MODULATION
PERFORMANCE
RADIATIONS
STANFORD LINEAR ACCELERATOR CENTER
SYNCHROTRON RADIATION