Time-interleaved multienergy acceleration for an x-ray free-electron laser facility

• Published in: Physical review special topics. PRST-AB. Accelerators and beams Vol. 16; no. 8; p. 080701
• Main Authors: Hara, Toru, Tamasaku, Kenji, Asaka, Takao, Inagaki, Takahiro, Inubushi, Yuichi, Katayama, Tetsuo, Kondo, Chikara, Maesaka, Hirokazu, Matsubara, Shinichi, Ohshima, Takashi, Otake, Yuji, Sakurai, Tatsuyuki, Sato, Takahiro, Tanaka, Hitoshi, Togashi, Tadashi, Togawa, Kazuaki, Tono, Kensuke, Yabashi, Makina, Ishikawa, Tetsuya
• Format: Journal Article
• Language: English
• Published: American Physical Society 01-08-2013
• ISSN: 1098-4402; 1098-4402
• DOI: 10.1103/PhysRevSTAB.16.080701

To meet the demand from the growing number of user experiments, multi-beam-line operation with a wide spectral range is seriously considered in x-ray free-electron laser facilities. In a conventional design, the beam line of low photon energies branches off from the middle of the accelerator to take out low energy electron beams. Here in this paper, a novel method is proposed to deliver bunch-to-bunch energy changed electron beams at the end of the accelerator. Since all accelerator components are operated in steady state, this method enables quasisimultaneous operation of multi-beam-line in the same undulator hall without degrading the stability and performance of the electron beam.