Preliminary RF design of an X-band linac for the EuPRAXIA@SPARC_LAB project

Abstract

In the framework of the upgrade of the SPARC LAB facility at INFN-LNF, named EuPRAXIA@SPARC LAB, a high gradient linac is foreseen. One of the most suitable options is to realize it in X-band. A preliminary design study of both accelerating structures and power distribution system has been performed. It is based on 0.5 m long travelling wave (TW) accelerating structures operating in the 2π/3 mode and fed by klystrons and pulse compressor systems. The main parameters of the structures and linac are presented with the basic RF linac layout.

CLIC X-band technology developments and their use in compact accelerators for research, medicine and industry.

“…The European project EuPraxiaSparcLab [8] makes use of a compact 1 GeV X-band linac to demonstrate electron beam driven plasma wakefield acceleration (PWA). At CERN an x-band injector is used to inject the probe beam into a proton driven plasma wakefield acceleration experiment (AWAKE) [9].…”

ARIA—A VUV Beamline for EuPRAXIA@SPARC_LAB

“…The beam is then accelerated by two sets of 8 X-band RF linac sections, 26 separated by a magnetic chicane to further compress the electrons. The beam energy at the linac end is up to about 500 MeV when we use the following PWFA section for better control of the electron bunches parameters.…”

The Innovative FEL design by the CompactLight Collaboration

“…In sequence, a C-band booster is made up of four 2m long traveling wave accelerating structures fed by one klystron and one pulse compressor. The C-band structure parameters are listed in Table 4 and they have been found using the same algorithm illustrated in [11]. Each structure has a linear tapering of the irises.…”