A beam diagnostic multisensor for low energy radioactive beams

During the last years the EXotics with CYclotron and Tandem (EXCYT) facility has been developed at LNS-INFN in Catania, in order to produce radioactive ion beams in the energy range accessible to the 15 MV Tandem Van de Graaf accelerator, with intensity around 105 particles per second (pps). In order to guarantee quick and precise beam transport procedures, the facility has been equipped with a high sensitivity beam diagnostics, well designed for very low intensity beams. In this paper we describe the features and the experimental results of the device developed for the low energy beam line (10-300 keV) of the facility. Such a multisensor device is mainly based on particle detectors and allows to collect the needed parameters in real time. In particular it can measure the X-Y transverse beam profile and intensity, and can identify the radioisotopes present in the beam.