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The Beam Dump Facility (BDF) project is a proposed general-purpose facilityat CERN, dedicated to beam dump and fixed target experiments. In its initialphase, the facility is foreseen to be exploited by the Search for HiddenParticles (SHiP) experiment. Physics requirements call for a pulsed 400 GeV/cproton beam as well as the highest possible number of protons on target (POT)each year of operation, in order to search for feebly interacting particles.The target/dump assembly lies at the heart of the facility, with the aim ofsafely absorbing the full high intensity Super Proton Synchrotron (SPS) beam,while maximizing the production of charmed and beauty mesons. High-Z materialsare required for the target/dump, in order to have the shortest possibleabsorber and reduce muon background for the downstream experiment. The highaverage power deposited on target (305 kW) creates a challenge for heatremoval. During the BDF facility Comprehensive Design Study (CDS), launched byCERN in 2016, extensive studies have been carried out in order to define andassess the target assembly design. These studies are described in the presentcontribution, which details the proposed design of the BDF production target,as well as the material selection process and the optimization of the targetconfiguration and beam dilution. One of the specific challenges and novelty ofthis work is the need to consider new target materials, such as a molybdenumalloy (TZM) as core absorbing material and Ta2.5W as cladding.Thermo-structural and fluid dynamics calculations have been performed toevaluate the reliability of the target and its cooling system under beamoperation. In the framework of the target comprehensive design, a preliminarymechanical design of the full target assembly has also been carried out,assessing the feasibility of the whole target system.

Design of a high power production target for the Beam Dump Facility at CERN