Broad-band electron spectroscopy: a novel concept based on Thomson   scattering
  The spectrum of relativistic electron bunches with large energy dispersion is hardly obtainable with conventional magnetic spectrometers.   We present a novel spectroscopic concept, based on the analysis of the photons generated by Thomson Scattering of a probe laser pulse inpinging with arbitrary incidence angle onto the electron bunch.   The feasibility of a single-pulse spectrometer, using an energy-calibrated CCD device as detector, is investigated. Numerical simulations performed in conditions typical of a real experiment show the effectiveness and accuracy of the new method. 
P. Tomassini, M. Galimberti, A. Giulietti, D. Giulietti, L.A. Gizzi,   L. Labate