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Koeth, T.W.

Paper Title Page
THPE043 Demonstration of Transverse-to-longitudinal Emittance Exchange at the Fermilab Photoinjector 4614
 
  • A.S. Johnson, H.T. Edwards, T.W. Koeth, A.H. Lumpkin, P. Piot, J. Ruan, J.K. Santucci, Y.-E. Sun, R. Thurman-Keup
    Fermilab, Batavia
  
 

Phase space ma­nip­u­la­tion tech­niques with­in two de­grees of free­dom are fore­seen to en­hance the per­for­mances of next gen­er­a­tion ac­cel­er­a­tors such as high-en­er­gy physics col­lid­ers and ac­cel­er­a­tor based light sources. At the Fer­mi­lab A0 pho­toin­jec­tor, a proof-of-prin­ci­ple ex­per­i­ment to demon­strate the ex­change of the trans­verse and lon­gi­tu­di­nal emit­tances is on­go­ing. The emit­tance ex­change beam­line con­sists of a 3.9 GHz nor­mal con­duct­ing de­flect­ing mode cav­i­ty flanked by two doglegs. Elec­tron bunch­es with charges of 250 pC and en­er­gy of 14.3 MeV are rou­tine­ly sent through the ex­chang­er. In this paper, we re­port our lat­est re­sults on the demon­stra­tion of emit­tance ex­change ob­tained with sig­nif­i­cant­ly im­proved beam di­ag­nos­tics. We also com­pare our ex­per­i­men­tal re­sults with a sim­ple nu­mer­i­cal model.