An &i&e&/i&&sup&+&/sup&&i&e&/i&&sup&-&/sup&/&i&γγ&/i&/&i&ep&/i& Accelerator Complex at a Future Circular Collider

摘要

This is the second paper by the author describing versatile accelerator complexes that could be built at a Future Circular Collider (FCC) in order to produce e ~(+)e ~(-), γγ and ep collisions. The facility described here features an ILC-based e ~(+)e ~(-) collider placed tangentially to the FCC tunnel. If the collider is positioned asymmetrically with respect to the FCC tunnel, electron (or positron) bunches could be accelerated by both linacs before they are brought into collision with the 50-TeV beams from the FCC proton storage ring (FCC-pp). The two linacs may also form a part of the injector chain for FCC-pp. The facility could be converted into a γγ collider or a source of multi-MW beams for fixed-target experiments.