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Inicio  /  Instruments  /  Vol: 3 Par: 4 (2019)  /  Artículo
ARTÍCULO
TITULO

GeV-Class Two-Fold CW Linac Driven by an Arc-Compressor

Alberto Bacci    
Angelo Bosotti    
Simone Di Mitri    
Illya Drebot    
Luigi Faillace    
Paolo Michelato    
Laura Monaco    
Michele Opromolla    
Rocco Paparella    
Vittoria Petrillo    
Marcello Rossetti Conti    
Andrea Renato Rossi    
Luca Serafini and Daniele Sertore    

Resumen

We present a study of an innovative scheme to generate high repetition rate (MHz-class) GeV electron beams by adopting a two-pass two-way acceleration in a super-conducting Linac operated in Continuous Wave (CW) mode. The beam is accelerated twice in the Linac by being re-injected, after the first pass, in opposite direction of propagation. The task of recirculating the electron beam is performed by an arc compressor composed by 14 Double Bend Achromat (DBA). In this paper, we study the main issues of the two-fold acceleration scheme, the electron beam quality parameters preservation (emittance, energy spread), together with the bunch compression performance of the arc compressor, aiming to operate an X-ray Free Electron Laser. The requested power to supply the cryogenic plant and the RF sources is also significantly reduced w.r.t a conventional one-pass SC Linac for the same final energy.

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