Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1823312 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2013 | 4 Pages |
Abstract
We have studied the electron beam transverse adaptation in an FEL oscillator in a very large interval of wavelength (3 to 150 μm) and electron energy range (12 to 45 MeV). Beam dimensions are measured by a moving wire whose temperature dependent resistivity is monitored. By a fast motion of the wire we measure its temperature increase at each transverse position before thermal equilibrium takes place. The beam profile is then directly proportional to the series of the measured values. The results fits well the analytical theory of FEL beam adaptation, even when the undulator vacuum chamber is used as an optical waveguide.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
J.-M. Ortega, B. Rieul, J.-P. Berthet, F. Glotin, R. Prazeres,