CERN Accelerating science

Article
Title	Ampere Average Current Photoinjector and Energy Recovery Linac
Author(s)	Ben-Zvi, Ilan ; Burrill, A ; Calaga, R ; Cameron, P ; Chang, X ; Gassner, D M ; Hahn, H ; Hershcovitch, A ; Hseuh, H C ; Johnson, P ; Kayran, D ; Kewisch, J ; Lambiase, R F ; Litvinenko, Vladimir N ; McIntyre, G ; Nicoletti, A ; Rank, J ; Roser, T ; Scaduto, J ; Smith, K ; Srinivasan-Rao, T ; Wu, K C ; Zaltsman, A ; Zhao, Y
Affiliation	(BNL, Upton, Long Island, New York AES, Medford, NYJefferson Lab, Newport News, Virginia)
Publication	2004
In:	26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. THBOC04
Subject category	Accelerators and Storage Rings
Abstract	High-power Free-Electron Lasers were made possible by advances in superconducting linac operated in an energy-recovery mode, as demonstrated by the spectacular success of the Jefferson Laboratory IR-Demo. In order to get to much higher power levels, say a fraction of a megawatt average power, many technological barriers are yet to be broken. BNL’s Collider-Accelerator Department is pursuing some of these technologies for a different application, that of electron cooling of high-energy hadron beams. I will describe work on CW, high-current and high-brightness electron beams. This will include a description of a superconducting, laser-photocathode RF gun employing a new secondary-emission multiplying cathode and an accelerator cavity, both capable of producing of the order of one ampere average current.