Radiation from Relativistic Electrons in Periodic Structures "RREPS-15"

Dielectric Based THz Radiation and Acceleration: Present Status and Perspectives

10 Sept 2015, 10:00

30m

Invited 1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation 1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation

Speaker

Alexei Kanareykin (St.Petersburg Electrotechnical University "LETI", Russia; Euclid Techlabs LLC,USA)

Description

Cherenkov radiation from particle bunches is of considerable importance in many areas of fundamental and applied physics. Recent experiments has demonstrated that proper adjustment of the electron beam parameters to the guiding structure geometry scaled from sub millimeter dielectric waveguides to nanoscale periodic structures allows to generate radiation, ranging from low terahertz to visible light. Using Cherenkov radiation generated by a high current bunch passing a dielectric wake-field accelerator (DWA) may provide a significant cost saving and reduction of the linear collider or FEL facility size. Femtosecond or picosecond electron bunches are used for high power THz generation for particle acceleration as well. With this talk, we present our recent developments on (1) wakefields generation by using dielectric based structures and introducing an energy modulation that allows high power THz radiation in the range 0.5 - 1 THz (2) THz passive energy chirp correction (3) a concept for a multi-beamline FEL driven by high repetition rate dielectric based wakefield accelerators.

External references

• S1.2