LOW INTENSITY ELECTRON BEAM MONITORING AND BEAM APPLICATIONS AT OPU LINAC

Low intensity beams are generated with a 18 MeV S- band electron linear accelerator at Osaka Prefecture University. The minimum charge of electrons in a pulsed beam is about several aC. Study has been made to establish the methods for measuring the intensity and the spatial profile of the beam at electron charges of a beam in aC to pC regions. In pC region a beam monitor using a charge-sensitive amplifier and a two dimensional monitor using a scintillator and a CCD camera have been developed. The characteristics of thermoluminescence dosimeters and two-dimensional radiation dosimeters as monitors in fC region have been investigated. From the results it has been found that these dosimeters can be applied to monitoring the low intensity electron beams. Possible beam application researches are discussed.