Beam energy compression system for the LUEh-300 MeV

Description and test results of beam energy compression system (BECS) as the exit of the LUEh-300 linear electron accelerator, are given. The BECS consists of a magnetic debuncher and accelerating section-compressor. The existing beam translation system is used as the debuncher. The accelerating section presents a circular diaphragmatic waveguide, 1152 mm long, the wave type transformers being connected to the ends of it. Result of BECS testing at the LUEh-300 accelerator showed: the system ensures the decrease in beam spread to the value less than 0.1% without the loss of its intensity in the energy range (100-300) MeV; the system possesses an ability to stabilize beam energy (in the case of the beam initial energy variation within +-0.5 it provides the beam energy stabilization with coefficient 10; the use of series supply of beam bending magnets of the debuncher and lense focusing permits to stabilize the beam position on a target with an accuracy of 0.2 mm/hr