No. 72 (2017): Future Energy-Frontier Circular Colliders

Issue Editors: M. Benedikt and F. Zimmermann, Editor-in-Chief: Y. H. Chin

This issue of the ICFA Newsletter first reports from the existing SuperKEKB and LHC, including their future plans, and then reviews key challenges in accelerator physics, key technologies, technical infrastructure and civil engineering for the proposed 100 km lepton and hadron colliders FCC-ee, CEPC, FCC-hh, and SPPC. The compilation is completed by a few articles on the High Energy LHC, a proposed 27 TeV hadron collider in the existing 27 km tunnel at CERN, which could be realized by using the 16 Tesla magnet technology developed for the FCC hadron collider.