• S.P. Virostek, M.D. Hoff, D. Li, J.W. Staples
  LBNL, Berkeley, California

Project X is a proposed multi-MW proton facility at Fermi National Accelerator Laboratory. It is the key element for future accelerator complex development intended to support world-leading High Energy Physics (HEP) programs. The Project X front-end would consist of H^- ion source(s), a low-energy beam transport (LEBT), radio-frequency quadrupole (RFQ) accelerator(s), and a medium-energy beam transport (MEBT). To support current and future HEP experiments at Fermilab, a CW RFQ is required. One of the chosen RFQ designs has a resonant frequency at 325 MHz. The RFQ provides bunching of the 10 mA H^- beam with acceleration up to 2.5 MeV and wall power losses of less than 250 kW. LBNL is currently developing the early designs for various components in the Project X front-end. The RFQ design concept and the preliminary RF and thermal analyses are presented here.

• 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.