Speaker
Description
The EuPRAXIA@SPARC_LAB facility will be the first plasma-driven free-electron laser user facility and will host two different beamlines: the AQUA beamline, a SASE FEL designed to operate in the water window down to 3-4 nm, and the ARIA beamline, a seeded HGHG FEL operating in the VUV spectral range from 50 to 180 nm.
The beam driving these FELs is accelerated up to 1-1.2 GeV by an X-band normal conducting linear accelerator followed by a plasma wakefield acceleration stage.
The main FEL amplifier of AQUA consists of an array of ten APPLE-X permanent magnet undulator modules, each 2 m long and with a period length of 18 mm. The HGHG configuration for ARIA works with a modulator and four APPLE-X permanent magnet undulator modules with a period of 10 cm and 4.8 cm respectively.
The main design studies of such undulators are discussed, evaluating the tolerance of resistive wall wakefields, magnetic field errors and misalignments, as well as their impact on the FEL performance.
