Open AccessPhoton transport of the superradiant TeraFERMI THz beamline at the FERMI free‐electron laser
Author(s) -
Svetina Cristian,
Mahne Nicola,
Raimondi Lorenzo,
Perucchi Andrea,
Di Pietro Paola,
Lupi Stefano,
Schmidt Bernhard,
Zangrando Marco
Publication year - 2016
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/s1600577515021414
Subject(s) - beamline , undulator , terahertz radiation , physics , optics , free electron laser , laser , femtosecond , fermi gamma ray space telescope , electron , beam (structure) , nuclear physics , astrophysics
TeraFERMI is the new terahertz (THz) beamline for pump–probe studies on the femtosecond time‐scale, under construction at the FERMI free‐electron laser (FEL) facility in Trieste, Italy. The beamline will take advantage of the coherent radiation emitted by the spent electrons from the FEL undulators, before being dumped. This will result in short, coherent, high‐power THz pulses to be used as a pump beam, in order to modulate structural properties of matter, thereby inducing phase transitions. The TeraFERMI beamline collects THz radiation in the undulator hall and guides it along a beam pipe which is approximately 30 m long, extending across the safety hutch and two shielding walls. Here the optical design, which will allow the efficient transport of the emitted THz radiation in the experimental hall, is presented.