LBNL, Berkeley, California
Historically, progress in high-energy physics has largely been determined by development of more-capable accelerators. This trend continues with the imminent commissioning of the Large Hadron Collider and the worldwide development effort toward the International Linear Collider. Looking beyond these machines, there are two scientific areas ripe for further exploration–the energy frontier and the precision frontier. To explore the energy frontier, two approaches toward multi-TeV beams are being studied, an electron-positron linear collider based on a novel two-beam powering system (CLIC), and a Muon Collider. Work on the precision frontier involves accelerators with very high intensity, including a proposed Super-B Factory and a muon-based Neutrino Factory. Without question, one of the most promising approaches is the development of muon-beam accelerators. Such machines would substantially advance the state of the art in accelerator design and, to reap their scientific potential, require sophisticated instrumentation to characterize the beam and control it with unprecedented precision.
