Method for energy dither of a particle beam
Abstract
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.
- Inventors:
- Issue Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1600311
- Patent Number(s):
- 10483712
- Application Number:
- 16/292,474
- Assignee:
- Jefferson Science Associates, LLC (Newport News, VA)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
- DOE Contract Number:
- AC05-06OR23177
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 03/05/2019
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Powers, Thomas Joseph, Douglas, David R., Evtushenko, Pavel, Benson, Stephen V., and Neil, George. Method for energy dither of a particle beam. United States: N. p., 2019.
Web.
Powers, Thomas Joseph, Douglas, David R., Evtushenko, Pavel, Benson, Stephen V., & Neil, George. Method for energy dither of a particle beam. United States.
Powers, Thomas Joseph, Douglas, David R., Evtushenko, Pavel, Benson, Stephen V., and Neil, George. Tue .
"Method for energy dither of a particle beam". United States. https://www.osti.gov/servlets/purl/1600311.
@article{osti_1600311,
title = {Method for energy dither of a particle beam},
author = {Powers, Thomas Joseph and Douglas, David R. and Evtushenko, Pavel and Benson, Stephen V. and Neil, George},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {11}
}
Works referenced in this record:
Free-electron laser
patent, February 1989
- Neil, George R.; Edighoffer, John A.
- US Patent Document 4,809,281