OVERVIEW OF THE ESS-BILBAO MOBILE DIAGNOSTICS TEST STAND

A MObile diagnostics Test Stand (MOTS) is being designed at ESS-Bilbao in order to characterise the beam at the end of the Radio Frequency Quadrupole (RFQ) at 3 MeV. Injection of the beam from the RFQ to the Drift Tube Linac (DTL) tank and acceleration up to 12 MeV is a sensitive operation in the accelerating chain. The output beam of the RFQ should be fully characterised and tuned to optimise this operation. To perform this characterisation the MOTS is being designed with a set of diagnostic devices to measure also beam parameters after the Medium Energy Beam Transport (MEBT), and with minor modifications after the first tank of the DTL. The most important beam parameters that will be measured with the test stand are the beam current and the beam energy. Other important parameters are the beam emittance, the transverse beam position and the profile and bunch length. This contribution describes the beam properties that will be measured and the corresponding instrumentation devices, and presents a general layout of the MOTS.