Author: Opanasenko, A.
Paper Title Page
TUP079 A Swedish Compact Linac-based THz/X-ray Source at FREIA 545
 
  • V.A. Goryashko
    Private Address, Uppsala, Sweden
  • A. Opanasenko
    NSC/KIPT, Kharkov, Ukraine
  • V. Zhaunerchyk
    University of Gothenburg, Gothenburg, Sweden
  
  THz ra­di­a­tion en­ables prob­ing and con­trol­ling low-en­ergy ex­ci­ta­tions in mat­ter such as mol­e­c­u­lar ro­ta­tions, DNA dy­nam­ics, spin waves and Cooper pairs. In view of grow­ing in­ter­est to the THz ra­di­a­tion, the Swedish FEL Cen­ter and FREIA Lab­o­ra­tory are work­ing on the con­cep­tual de­sign of a com­pact mul­ti­color pho­ton source for mul­ti­dis­ci­pli­nary re­search. We pre­sent the de­sign of such a source dri­ven by high-bright­ness elec­tron bunches pro­duced by a su­per­con­duct­ing lin­ear ac­cel­er­a­tor. A THz source is en­vi­sioned as an FEL os­cil­la­tor since this en­ables not only gen­er­a­tion of THz pulses with a band­width down to 0.01% (with in­ter-pulse lock­ing tech­nique) but also gen­er­a­tion of short pulses with sev­eral cy­cles in du­ra­tion by de­tun­ing the res­onator. For pump-probe ex­per­i­ments, the THz source will be com­ple­mented with an X-ray source. One of the most promis­ing op­tions is the in­verse Comp­ton scat­ter­ing of quan­tum laser pulses from elec­tron bunches. Such an X-ray source will op­er­ate in water win­dow with out­put in­ten­sity com­pa­ra­ble to a sec­ond gen­er­a­tion syn­chro­tron. The en­vi­sioned THz/X-ray source is com­pact with a cost com­pa­ra­ble to the cost of one beam­line at a syn­chro­tron.