Sterilization installation electron beam dynamics optimization
Some methods to increase efficiency of electron beam usage in sterilization installation, simulated by computer code “Beam Scanning”, are presented. These methods include a correction of the current waveform in deflecting magnet, forming slightly convergent electron flow and irradiation of lateral object sides by low-energy electrons in the energy spectrum.
Compact electron linacs for radiation technology systems
Compact, self-contained electron beam systems are used for sterilization of medical devices and materials, treatment of medical and infectious wastes, non-intrusive inspection of cargo containers, etc. These systems, having massive local radiation shielding, require compact accelerators. 5-MeV and 7-MeV electron linacs are presented in this paper. The accelerators use standing wave biperiodic structures fed by magnetron generators with 2.8 GHz frequency. The accelerators do not use an external magnetic field for the beam focusing. Bunching, acceleration and focusing of the beam are performed by an RF field of the accelerating structure.
A Compact Electron Linac Using Side-Coupled Structure
The design and some performances of a side-coupled structure used in an electron linac are described. The high shunt impedance of 97 MΩ/m is obtained at 3 GHz. With a peak rf power of 1.4 MW and a 270 mm long structure, the peak beam current of 130 mA can be accelerated from 70 keV to 4 MeV. This means that the peak accelerating field of about 30 MV/m is stably obtained. Moreover, the diameter of the accelerated electron beam is less than 2 mm without external focusing.