TY - CPAPER
AU - Stupakov, G.
AU - Emma, P.
TI - Reversible Electron Beam Heater without Transverse Deflecting Cavities
J2 - Proc. of FEL2015
AB - Suppression of microbunching instability in modern FELs is an important issue that often limits the performance of the machine. A technique to suppress the instability with the help of a reversible electron beam heater was proposed by C. Behrens, Z. Huang, and D. Xiang [*]. It employs transverse deflecting cavities synchronized in a way that one of the cavities, located before a bunch compressor, generates a slice energy spread, while the other one removes it after the beam passes through the bunch compressor. Being an attractive approach, this concept unfortunately imposes extremely tight tolerances on the synchronization of the cavities. In this paper we demonstrate that a reversible heater equivalent to that of Behrens et al. can be designed using much simpler elements: bend magnets and quadrupoles in combination with the energy chirp of the beam.
PB - JACoW
CY - Geneva, Switzerland
SP - 166
EP - 170
KW - emittance
KW - electron
KW - cavity
KW - optics
KW - synchrotron
DA - 2015/12
PY - 2015
SN - 978-3-95450-134-2
DO - 10.18429/JACoW-FEL2015-MOP056
UR - http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/mop056.pdf
ER -