Design, Manufacturing and Tests of the LIPAc High Energy Beam Transport Line. Accepted version

Abstract

The International Fusion Materials Irradiation Facility (IFMIF) is a projected accelerator-based, D-Li neutron source for

fusion reactor materials qualification. LIPAc (Linear IFMIF Prototype Accelerator) is an accelerator aiming to generate

a 125 mA, 9 MeV continuous wave deuteron beam, which is currently being commissioned in Rokkasho (Japan) with

the objective of validating the IFMIF accelerator design.

In LIPAc, a 10 m long High Energy Beam Transport line (HEBT) will connect the exit of the superconducting linac to

the beam dump. The HEBT line must accommodate the diagnostics for beam characterization and open the beam at the

end to allow its stopping at the beam dump. The line contains several magnets to control the beam shape and its

trajectory, maintaining beam losses below 1W/m along the beamline to limit activation of surrounding elements and

allow hands-on maintenance.

In this work, the LIPAc HEBT line project is described since its origins. A summary of the beam dynamics calculations

and other studies (vacuum, radioprotection, assembly, alignment) that led to the conceptual design of the line is done.

After that, the detailed design of the line is presented, justifying the main design decisions taken and finally, the

manufacturing and procurement process and the acceptance tests performed are summarized.