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Oliver Brüning and Lucio Rossi discuss an upgrade of the Large Hadron Collider (LHC), the High-Luminosity LHC (HL-LHC), which aims to significantly increase the luminosity.
Edda Gschwendtner and Patric Muggli discuss the concept of plasma wakefield acceleration and its potential for future particle colliders and other applications.
Michael Benedikt and Frank Zimmermann describe the Future Circular Collider, a proposed collider-based research infrastructure that can be realized in successive steps.
Shinichiro Michizono describes the International Linear Collider, a proposed 250 GeV electron–positron collider using superconducting radiofrequency technology.
Many small research reactors used as neutron sources are being shut down. To replace them, new facilities are being developed. In particular, compact accelerator-based neutron sources can take up many of the activities previously supported by reactor-based facilities.
Physics keeps changing and so do classification and subject indexing. Arthur Smith recalls the final updates to the Physics and Astronomy Classification Scheme (PACS) and the development of the Physics Subject Headings (PhySH), and ponders future directions.
Modern theoretical physics is indivisible. Ideas flow freely and fruitfully across traditional boundaries separating materials physics, fundamental physics and cosmology. How did this state of affairs come to be? What are its outstanding results? Is there more to come? Frank Wilczek discusses the synergy between the different fields of physics.
