Optics for ARC 5

Optics for the arc at 755 MeV. Appropriate recirculation optics are of fundamental concern in a multi-pass machine to preserve beam quality. The design comprises three different regions, the linac optics, the recirculation optics and the merger optics. two-step-achromat spreaders and mirror symmetric recombiners have been implemented. The switchyard separates all three arcs into 1 meter high vertical stack. The 180 deg arc is made of 8 dipoles

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