Title :
First-, second-, and third-order achromatic bend systems for free-electron laser applications
Author :
Rusthoi, D.P. ; Wadlinger, E.A.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
The authors evaluated and compared several achromatic bend systems for the application of transporting a spent electron beam exiting the wiggler of a free-electron laser (FEL). For high-power, efficient FELs, the design of a postwiggler electron-beam transport system is challenging because of the large double-peaked momentum distribution caused by the laser. The optics systems had to be able to handle electron-beam power arbitrarily distributed between the two momentum peaks. This system included not only the achromatic bend but also the final transport that involved a beam distribution or rastering system targetting a beamstop. The salient features of 11 achromatic bend systems and the characteristics by which to choose one system over another are discussed.<>
Keywords :
beam handling equipment; electron beams; free electron lasers; achromatic bend systems; beam distribution; beamstop; free-electron laser applications; postwiggler electron-beam transport system; rastering system; spent electron beam; wiggler; Electron optics; Free electron lasers; Laboratories; Laser applications; Laser beams; Particle beam optics; Particle beams; Space charge; Taylor series; Undulators;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164378
