The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 16, 2018
Filed:
May. 10, 2015
Jefferson Science Associates, Llc, Newport News, VA (US);
David R. Douglas, Yorktown, VA (US);
Robert Legg, Newport News, VA (US);
R. Roy Whitney, Newport News, VA (US);
George Neil, Williamsburg, VA (US);
Thomas Joseph Powers, Poquoson, VA (US);
JEFFERSON SCIENCE ASSOCIATES, LLC, Newport News, VA (US);
Abstract
A method of varying the output of a free electron laser (FEL) on very short time scales to produce a slightly broader, but smooth, time-averaged wavelength spectrum. The method includes injecting into an accelerator a sequence of bunch trains at phase offsets from crest. Accelerating the particles to full energy to result in distinct and independently controlled, by the choice of phase offset, phase-energy correlations or chirps on each bunch train. The earlier trains will be more strongly chirped, the later trains less chirped. For an energy recovered linac (ERL), the beam may be recirculated using a transport system with linear and nonlinear momentum compactions M, which are selected to compress all three bunch trains at the FEL with higher order terms managed.