Very high field structure-based acceleration research at UCLA
by
James Rosenzweig(UCLA)
→
Europe/Rome
Sala Azzzurra (LNS)
Sala Azzzurra
LNS
Description
At UCLA, high gradient acceleration research extends from innovative use of structures to laser and plasma-based acceleration. In this talk we concentrate on advanced work in structures, emphasizing: new RF techniques using cryogenic metallic cavities; THz accelerators based on dielectric wakefields; and infrared-laser driven dielectric structures. In the case of cryogenic cavities, we discuss the extremely promising work performed in collaboration with SLAC and INFN on the development of RF photoinjectors with peak fields extending up to 300 MV/m; this scenario yields beam brightness over an order of magnitude higher than that achieved with current approaches. In UCLA research into dielectric wakefield acceleration (DWA), we show that up to 2 GV/m fields are accessed, permitting uniquely powerful new THz sources and giving compelling options for future linear colliders and free-electron laser light sources. New high field physics in materials are uncovered in the process. Finally, we discuss a promising approach to very compact accelerators for medicine and industry using dielectric laser acceleration (DLA), a field that pushes the frontiers in high brightness beams, nanofabrication, and photonics.
Biographical Sketch:
James Rosenzweig is a Distinguished Professor of Physics and has served thefive years as Chair pf the University of California, Los Angeles, Dept. of Physics and Astronomy. In research, he is the Director of a large, student-oriented research group at UCLA, termed the Particle Beam Physics Laboratory. This multi-disciplinary program is concerned with fundamental aspects of high brightness, ultra-fast electron beam systems, with application to advanced accelerators based on lasers, wakefields, and plasmas, and to next generation radiation production, such as free-electron lasers (FELs) and inverse Compton scattering (ICS) sources. This research program has a strong on-campus component based on lower energy photoinjectors, and a large external program located at user facilities (FACET, ATF) and collaborating institutions both in the US and abroad (e.g. SPARC in Frascati. These off-campus activities enable research into wakefield acceleration as well as FEL and ICS physics and their applications. Prof. Rosenzweig is the author or co-author of over 520 scientific articles, has written a textbook on the physics of charged particle and laser beams, and an editor of several advanced topical research books. As department chair, he has responsible for numerous educational outreach programs and initiatives. Prof. Rosenzweig has been a visiting scientist at Argonne National Lab, Fermilab, and INFN-LNF, and a visiting professor at the University of Rome. He is a lifetime member and Fellow of the American Physical Society and the Optical Society of America. He has been the recipient of Sloan and Wilson Fellowships, and has received the International Free-electron Prize. In addition to university service he is active in the scientific community through editorial series. He has co-founded several industrial accelerator companies.
