• R.C. Webber, T.N. Khabiboulline, R.L. Madrak, G.V. Romanov, V.E. Scarpine, J. Steimel, D. Wildman
  Fermilab, Batavia

The Fermilab High Intensity Neutrino Source program has built and commissioned a pulsed 325 MHz RFQ. The RFQ has successfully accelerated a proton beam at the design RF power. Experiences encountered during RFQ conditioning, including the symptoms and cause of a run-away detuning problem, and the first beam results are reported.

• S. Nagaitsev, M. Popovic, G.V. Romanov, R.C. Webber, V.P. Yakovlev
  Fermilab, Batavia
• Q. Ji, D. Li, T. Schenkel, J.W. Staples, S.P. Virostek
  LBNL, Berkeley, California

A multi-MW proton facility, Project X has been proposed and currently under development at Fermilab. Project X is critical for future development of accelerator complex for future high energy physics programs in the US. In collaboration with Fermilab, LBNL is actively involved in the development and design studies of the front-end system for Project X. The front-end system would consist of H^- ion source(s), low-energy beam transport (LEBT), normal conducting CW Radio-Frequency-Quadrupole (RFQ) accelerator(s), medium-energy beam transport (MEBT), beam chopper(s) and normal conducting CW rebuncher cavities. We will review and present R&D programs and recent study progress on the front-end system of Project X. These studies may include beam dynamics simulations and concepts for LEBT, RFQ, MEBT and narrow band chopper, and preliminary conceptual designs of normal conducting CW RFQ(s) and rebuncher cavities.