Open AccessCompact undulator line for a high‐brilliance soft‐X‐ray free‐electron laser at MAX IV
Author(s) -
Mak Alan,
Salén Peter,
Goryashko Vitaliy
Publication year - 2019
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s160057751900290x
Subject(s) - undulator , lasing threshold , free electron laser , physics , laser , optics , spontaneous emission , superradiance , atomic physics
The optimal parameter space for an X‐ray free‐electron laser (FEL) in the self‐amplified spontaneous emission (SASE) operation mode is examined. This study focuses on FEL operation with a shorter undulator period and higher undulator strength made available through recent developments in in‐vacuum, cryogenic and superconducting undulators. Progress on short‐period undulator technologies is surveyed and FEL output characteristics versus undulator parameters are computed. The study is performed on a case of the planned soft‐X‐ray FEL at the MAX IV Laboratory in Sweden. An extension of the SASE mode into the harmonic lasing self‐seeded mode is also analysed.