The FEL SASE operation, bunch compression and the beam heater

OPTICS COMMUNICATIONS

卷:284

Article

Dattoli, G.¹  Labat, M.¹  Migliorati, M.^2,3  Ottaviani, P. L.⁴  Pagnutti, S.⁵  Sabia, E.⁶ 

[1] ENEA, Unita Tecn Sviluppo Applicaz Radiaz, Lab Modellist Matemat, Ctr Ric Frascati, I-00044 Frascati, Italy

[2] Univ Roma La Sapienza, I-00161 Rome, Italy

[3] LNF INFN, Frascati, Italy

[4] Associato Sez INFN, Bologna, Italy

[5] ENEA, Unita Tecn Metodi Sicurezza Reattori & Ciclo Comb, Lab Sviluppo Metodi & Supporto Informat, Ctr Ric, Bologna, Italy

[6] ENEA, Unita Tecn Tecnol Portici, Ctr Ric Portici, I-80055 Naples, Italy

关键词: Free electron lasers;    Landau damping;    Self amplified spontaneous emission;    Synchrotron light;    Electron beam accelerators;    Coherent synchrotron radiation;    Micro-bunching instability;    Laser heater;   

DOI  :  10.1016/j.optcom.2010.11.052

来源: Elsevier

【 摘 要 】

We discuss the conditions required for an optimal SASE FEL operation when bunch compression techniques are exploited to enhance the bunch peak current. We discuss the case of velocity bunching and magnetic bunch compression. With reference to the latter technique we provide a quantitative estimate of the amount of laser heater power necessary to suppress the micro-bunching instability without creating any problem to the SASE dynamics. (C) 2010 Elsevier B.V. All rights reserved.

【 授权许可】

Free