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Steady-state FEL: particle dynamics in the FEL portion of a two-beam accelerator

Description: Motivated by its use in a Two-Beam Accelerator, we have studied a ''steady-state'' FEL; i.e., a periodic but very long structure in which the electron beam energy is replenished once a period with a short induction acceleration unit. We have studied longitudinal particle motion in such a device using a 1-D simulation code. We show that after an initial start-up section, particle detrapping from the pondermotive wave is minimal in a steady-state FEL of several kilometers. A simple linear model of particle diffusion is shown to describe the numerical results quite well.
Date: September 1, 1985
Creator: Sternbach, E. & Sessler, A.M.
Partner: UNT Libraries Government Documents Department

A new version of a free electron laser Two-Beam Accelerator

Description: A new version of a Two-Beam Accelerator is proposed in which in each period of the drive structure a very small input microwave signal is amplified to a large power level and then completely removed and transferred to the accelerating structure. In this manner a number of difficulties with the original version are eliminated or greatly relieved; namely, rf phase and amplitude sensitivity, growth of sidebands, and rf manipulation (removal of the microwaves from the drive structure, and transmission of microwave power through the accelerating cavities). 11 refs., 6 figs., 2 tabs.
Date: September 1, 1988
Creator: Sessler, A.M.; Sternbach, E. & Wurtele, J.S.
Partner: UNT Libraries Government Documents Department

Elements of a realistic 17 GHz FEL/TBA design

Description: Recently, renewed interest in an FEL version of a two-beam accelerator (TBA) has prompted a study of practical system and structure designs for achieving the specified physics goals. This paper presents elements of a realistic design for an FEL/TBA suitable for a 1 TeV, 17 GHz linear collider. 13 refs., 8 figs., 2 tabs.
Date: January 1, 1989
Creator: Hopkins, D.B.; Halbach, K.; Hoyer, E.H.; Sessler, A.M. & Sternbach, E.J.
Partner: UNT Libraries Government Documents Department