Abstract
The proposed 8 GeV proton driver (PD) linac at FNAL is based on 436 independently phased superconducting (SC) resonators (Foster and MacLachlan 2002 Proc. LINAC-2002 p 826). The linac includes a front end up to ∼420 MeV and a high energy section operating at 325 and 1300 MHz respectively. A room temperature (RT) radio frequency quadrupole (RFQ) and short H-type resonators are proposed for the initial acceleration of the H-minus or proton beam up to 10 MeV. From 10 to ∼420 MeV the voltage gain is provided by SC spoke-loaded cavities. In the high-energy section, the acceleration is provided by the International Linear Collider (ILC)-style SC elliptical cell cavities. The beam physics and the lattice design for the FNAL 8 GeV linac are discussed in this paper.
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