BEAM ACCELERATION EXPERIMENT IN X-BAND GHZ LINAC FOR COMPTON SCATTERING X-RAY GENERATION Hirotoshi Masuda The University of Tokyo

outline Background X-ray source of X-band Linac at UT Beam line and RF Recently update  RFgun  Alpha magnet Compton scattering Conclusion and next step

background X-rays of keV are great use in medical science, biology, and material science Most synchrotron radiation sources are too large to be widely used for monochromatic X-rays. One solution to realize a remarkable compactness is laser-electron collision 50m

X-ray source of X-band Linac at UT

RF waveguide and beamline

RF system

RFgun update problem

RFgun update Resonant frequency Shunt inpedance 67MΩ/m Q-value 9232

Magnetic field evaluation of alpha-magnet Figure3 magnetic field simulation of alpha magnet

Beam parameter

Compton scattering

installed the slit (2mm,3mm) in the achromatic arc for reducing the background X-ray noise

Beam vibration

Output RF error effects electron beam vibration

conclution and next plan The thermionic cathode RF gun was upgraded and succeeded in stable operation in high power test. we could transport 38.5mA beam to beam dump. We alomost established the whole system of the the compact X-ray source and are woring on collision test between electron beam and laser for X-ray generation. We change alpha-magnet to achromatic arc for compressing electron beam from RFgun.

conclution and next plan The thermionic cathode RF gun was upgraded and succeeded in stable operation in high power test. we could transport 38.5mA beam to beam dump. We alomost established the whole system of the the compact X-ray source and are woring on collision test between electron beam and laser for X-ray generation. We change alpha-magnet to achromatic arc for compressing electron beam from RFgun.

Phase adjustmet of 3 dB hybrid