Author: Rosenzweig, J.B.
Paper Title Page
THA1WC02
Inverse Free-Electron-Laser Based Inverse Compton Scattering: An All-Optical 5th Generation Light Source  
 
  • J.B. Rosenzweig
    UCLA, Los Angeles, California, USA
 
  Funding: U.S. DHS DNDO Contract No. 2014-DN-077-ARI084-01 and US DOE Grant No. DE-SC0009914
Com­pact mono­chro­matic X-ray sources based on very high field ac­cel­er­a­tion and very short pe­riod un­du­la­tors may rev­o­lu­tion­ize di­verse ad­vanced X-ray ap­pli­ca­tions rang­ing from novel X-ray ther­apy tech­niques to ac­tive in­ter­ro­ga­tion of ma­te­ri­als, by mak­ing them ac­ces­si­ble in cost and size. Such com­pact­ness may be ob­tained by an all-op­ti­cal ap­proach, which em­ploys a laser-dri­ven high gra­di­ent ac­cel­er­a­tor based on in­verse free elec­tron laser (IFEL), fol­lowed by an in­verse Comp­ton scat­ter­ing (ICS) IP, a scheme where a laser is used as an un­du­la­tor. We dis­cuss ex­per­i­men­tal progress in un­der­stand­ing high-in­ten­sity ef­fects in ICS, as well as the de­vel­op­ment of an ef­fi­cient IFEL. We then de­scribe the proof-of-prin­ci­ple of an all-op­ti­cal IFEL-based sys­tem , where a TW-class CO2 laser pulse is split in two, with half used to ac­cel­er­ate a high qual­ity elec­tron beam up to 84 MeV through the IFEL in­ter­ac­tion, and the other half acts as an elec­tro­mag­netic un­du­la­tor to gen­er­ate up to 13 keV X-rays via ICS. These re­sults demon­strate the fea­si­bil­ity of this scheme, which can be joined with other tech­niques such as laser re­cir­cu­la­tion to yield very com­pact, high bril­liance, keV to MeV pho­ton sources.
 
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