Speaker
Dr
Karo Ispirian
(Alikhanian National Laboratory, Yerevan Physics Institute)
Description
For the production of intense monochromatic X-ray bunches it is considered the radiation produced by relativistic electrons in a radiator consisting of a stack of plates combined with a four-crystal X-ray monochromator (FCrM). The mechanism of resonance transition radiation (RTR) produced by electrons in the radiator is considered in three different schemes for obtaining single and periodic intense X-ray bunches:
a) the femtosecond pulses of electrons generate the RTR in the radiator and then the RTR photons interact with the specially adjusted FCrM for the monochromatization and narrowing of the X-ray pulses;
b) the assembly of FCrM and the radiator is considered in the condition when a positive feedback between micro bunched electron beam and generated X-ray pulses is provided for narrowing and multiple enhancement by stimulated RTR;
c) the system consisting of the FCrM, RTR radiator and long undulator of XFELS is considered when RTR is generated by micro bunched electron beam in a train and enhancement conditions.
In order to enhance the X-ray bunch amplitude the second b) and third c) methods use feedback from radiation produced by periodic electron bunches in RTR stack radiator and in existing SASE arrangements respectively.
Authors
Dr
Alexander Kubankin
(Laboratory of Radiation Physics, Belgorod State University)
Dr
Karo Ispirian
(Alikhanian National Laboratory, Yerevan Physics Institute)
Dr
M. Ispiryan
(Alikhanian National Laboratory, Yerevan Physics Institute)
