Method for energy dither of a particle beam
A method for varying the wavelength of a free electron laser (FEL) by applying an energy dither to the charged particles supplying the FEL. Bunches of charged particle beams are accelerated by cavities that are operated at a harmonic of the bunch repetition rate. The method involves adding one or more secondary radiofrequency accelerator cavities after the primary beam transport and near the wiggler to apply a fluctuation between individual bunches with a pseudo-random distribution. The secondary radiofrequency accelerator cavities provide fine variations of the beam energy about a nominal operating point. Operating a free electron laser (FEL) with a 1% change in the electron beam energy via the added secondary cavities will result in a 2% wavelength variation of the FEL output.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-06OR23177
- Assignee:
- Jefferson Science Associates, LLC (Newport News, VA)
- Patent Number(s):
- 10,483,712
- Application Number:
- 16/292,474
- OSTI ID:
- 1600311
- Resource Relation:
- Patent File Date: 03/05/2019
- Country of Publication:
- United States
- Language:
- English
Free-electron laser
|
patent | February 1989 |
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