Concept of Beam Instrumentation System for High-Intensity DARIA Proton Linac

Beam diagnostics is one of the main tasks during operation of charged particle accelerators. The paper presents a concept of a beam instrumentation system that provides diagnostic procedures and allows to measure and adjust the clue beam parameters in a linear resonant proton accelerator of a compact neutron source DARIA: current, position, profile, emittance, energy, phase characteristics. An important requirement is to provide measurements during the accelerator tuning procedure, when the beam parameters can be changed in a wide range. It is proposed to include in the main structure of the system such types of diagnostic devices as beam current transformers, stripline beam position monitors, wire scanners, ionization beam cross-section monitor, slit emittance meter, bunch shape monitor, water-cooled Faraday cup. A particular attention is paid to a non-destructive method due to a high pulse and average beam intensity in conjunction with a relatively low beam energy to provide continuous operational control of the beam parameters. Main physical principles of operation, typical characteristics, as well as features of the practical implementation of the devices are included. A possible arrangement layout of diagnostic units along the accelerator is proposed, taking into account peculiarities of using the proposed types of detectors in various parts of the accelerator.