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Accession Number DE2012-1045203
Title Upgrade of the Drive LINAC for the AWA Facility Dielectric Two-Beam Accelerator.
Publication Date Jul 2012
Media Count 3p
Personal Author D. Mihalcea J. Power M. Conde W. Gai Z. Li
Abstract We report on the design of a seven-cell, standing-wave, 1.3-GHz rf cavity and the associated beam dynamics studies for the upgrade of the drive beamline LINAC at the Argonne Wakefield Accelerator (AWA) facility. The LINAC design is a compromise between single-bunch operation (100 nC (at) 75 MeV) and minimization of the energy droop along the bunch train during bunch-train operation. The 1.3-GHz drive bunch-train target parameters are 75 MeV, 10-20-ns macropulse duration, and 16 x 60 nC microbunches; this is equivalent to a macropulse current and beam power of 80 A and 6 GW, respectively. Each LINAC structure accelerates approximately 1000 nC in 10 ns by a voltage of 11 MV at an rf power of 10 MW. Due to the short bunch-train duration desired ((approx)10 ns) and the existing frequency (1.3 GHz), compensation of the energy droop along the bunch train is difficult to accomplish by means of the two standard techniques: time-domain or frequency-domain beam loading compensation. Therefore, to minimize the energy droop, our design is based on a large stored energy rf cavity. In this paper, we present our rf cavity optimization method, detailed rf cavity design, and beam dynamics studies of the drive beamline.
Keywords Beam dynamics
Dielectric materials
Linear accelerators
Materials science
Stored energy
Wakefield accelerators

Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 46 - Physics
Corporate Author Stanford Linear Accelerator Center, Menlo Park, CA. Theory Group.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1302
Contract Number DE-AC02-76SF00515

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