Aberration corrected emittance exchange
Author(s)
Nanni, Emilio Alessandro; Graves, William S.
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Full exploitation of emittance exchange (EEX) requires aberration-free performance of a complex imaging system including active radio-frequency (rf) elements which can add temporal distortions. We investigate the performance of an EEX line where the exchange occurs between two dimensions with normalized emittances which differ by multiple orders of magnitude. The transverse emittance is exchanged into the longitudinal dimension using a double dogleg emittance exchange setup with a five cell rf deflector cavity. Aberration correction is performed on the four most dominant aberrations. These include temporal aberrations that are corrected with higher order magnetic optical elements located where longitudinal and transverse emittance are coupled. We demonstrate aberration-free performance of an EEX line with emittances differing by four orders of magnitude, i.e., an initial transverse emittance of 1 pm-rad is exchanged with a longitudinal emittance of 10 nm-rad.
Date issued
2015-08Department
MIT Nuclear Reactor LaboratoryJournal
Physical Review Special Topics - Accelerators and Beams
Publisher
American Physical Society
Citation
Nanni, E. A., and W. S. Graves. "Aberration corrected emittance exchange." Phys. Rev. ST Accel. Beams 18, 084401 (August 2015).
Version: Final published version
ISSN
1098-4402