Development of a Dedicated Beam-forming System for Material and Bioscience Research with High Intensity, Small Field Electron Beam of LILLYPUTobreakspace {}3 Accelerator at Wrocl aw Technology Park

摘要

The primary use of the LILLYPUT 3 accelerator at the Nondestructive TestingLaboratory at Wroclaw Technology Park is X-ray radiography for nondestructivetesting, including R&D of novel techniques for industrial and medical imaging.The scope of possible applications could be greatly extended by providing asystem for irradiation with electron beam. The purpose of this work was todesign such a system, especially for high dose rate, small field irradiationsunder cryogenic conditions for material and bioscience research. In this work,two possible solutions, based either on beam scanning or scattering andcollimation, were studied and compared. It was found that under existingconditions efficiency of both systems would be comparable. The latter one wasadopted due to its simplicity and much lower cost. The system design wasoptimized by means of detailed Monte Carlo modeling. The system is beingcurrently fabricated at National Centre for Nuclear Research in 'Swierk.