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

High Brightness Compton X-ray Source Development at KEK

10 Sept 2015, 10:30

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

Nobuhiro Terunuma (High Energy Accelerator Research Organization (KEK), Tsukuba, Japan)

Description

We have been developing a high brightness X-ray source based on the Inverse Compton scattering (ICS) between an electron beam and a laser pulse stacked in an optical cavity. The X-ray which energy is in the order of 10 keV, have a wide variety of application for material, biological and medical researches. The synchrotron light sources as the several GeV electron ring have been contributing to supply these X-rays. The ICS can deliver these X-rays by using an electron beam of several 10 MeV. The accelerator is expected to be a compact to fit in the university and hospital. The developments on both of the high intensity electron beam and the high power stacked laser are essential to realize the compact high brightness X-ray source. Two compact electron accelerators in KEK, the Laser Undulator Compact X-ray (LUCX) and the compact Energy Recovery Linac (cERL), are available for the development. The LUCX is a S-band pulse RF accelerator and accelerates an electron beam of 1000 bunches/pulse up to 24 MeV. The cERL is a test accelerator for the energy recovery linac with 1.3 GHz superconducting RF cavities and supplies a “CW” electron beam which suitable to realize the high brightness X-ray source. The development of the ICS X-ray source at cERL has been started in March 2015. We will report the recent activities in LUCX and cERL.