AN ACOUSTIC CONVERTER USED TO MEASURE IONIZING RADIATION ENERGY LOSS

摘要

A monitor is proposed based on ultrasonic production when ionizing radiation passes through a medium. The recording element is a 0.2 mm aluminum plate mounted in a ceramic acoustic converter AC in the form of a wedge of thickness 2 mm. The low plate thickness minimizes the beam parameter distortion, while special technology used in the AC provides high sensitivity. The device has been calibrated in the proton beam from the ITEP accelerator at 200 MeV with 2.10~9 -6.10~(10) particles in a pulse and a pulse length of 70 nsec.