Channeling 2018

Session

W2.1 Advanced Generation of THz and X-ray beams

Sep 28, 2018, 11:20 AM

Conveners

W2.1 Advanced Generation of THz and X-ray beams

• Alexander Aryshev (KEK)

33. Dispersion Relations for Different Types of Radiation from Periodic Structures: Similarities and Differences

Dr Alexey Tishchenko (National Research Nuclear University "MEPhI")

9/28/18, 11:20 AM

Oral presentation

In this report we discuss the similarities and differences of dispersion relations for different types of radiation in periodic structures – resonant transition radiation from multilayered stack of films, Smith-Purcell radiation, parametric X-ray radiation in crystals, undulator radiation. We show that the key factor here is the existence of frequency dependent dielectric permittivity leads to...

158. Delhi Light Source: a compact FEL-THz facility

Dr Subhendu Ghosh (Inter University Accelerator Centre)

9/28/18, 11:50 AM

Oral presentation

A compact pre-bunched Free Electron Laser facility named as Delhi Light Source is under construction at IUAC [1]. A low emittance electron beam (~ 4 - 8 MeV) will be produced by a photocathode based normal conducting RF gun and will be injected into a compact undulator magnet to produce intense THz radiation (0.18 to 2.85 THz). The gun, electron beam transport, undulator and experimental...