Author/Authors :
Gluskin، نويسنده , , E. and Benson، نويسنده , , C. and Dejus، نويسنده , , R.J. and Hartog، نويسنده , , P.K.Den and Deriy، نويسنده , , B.N. and Makarov، نويسنده , , O.A. and Milton، نويسنده , , S.V. and Moog، نويسنده , , E.R. and Ogurtsov، نويسنده , , V.I. and Trakhtenberg، نويسنده , , E.M. and Robinson، نويسنده , , K.E. and Vasserman، نويسنده , , I.B. and Vinokurov، نويسنده , , N.A. and Xu، نويسنده , , S.، نويسنده ,
Abstract :
A self-amplified spontaneously emitting (SASE) free-electron laser (FEL) for the visible-to-ultraviolet spectral range is under construction at the Advanced Photon Source at Argonne National Laboratory. The amplifier part of the FEL consists of twelve identical 2.7-m-long sections. Each section includes a 2.4-m-long, 33-mm-period hybrid undulator, a quadrupole lens, and a set of electron beam and radiation diagnostics equipment. The undulators will operate at a fixed magnetic gap (approx. 9.3 mm) with K=3.1. The electron beam position will be monitored using capacitive beam position monitors, YAG scintillators with imaging optics, and secondary emission detectors. The spatial distribution of the photon beam will be monitored by position sensitive detectors equipped with narrow-band filters. A high-resolution spectrograph will be used to observe the spectral distribution of the FEL radiation.
