Two-Bunch Operation at the FERMI FEL Facility

Penco, Giuseppe; Allaria, Enrico; Bassanese, Silvano; Cinquegrana, Paolo; Cleva, Stefano; Danailov, Miltcho; Demidovich, Alexander; Di Mitri, Simone; Ferianis, Mario; Gaio, Giulio; Gauthier, David; Giannessi, Luca; Predonzani, Mauro; Rossi, Fabio; Roussel, ElÃ©onore; Spampinati, Simone; Trovò, Mauro

doi:10.18429/JACoW-IPAC2017-WEPAB037

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RIS citation export for WEPAB037: Two-Bunch Operation at the FERMI FEL Facility

TY - CONF
AU - Penco, G.
AU - Allaria, E.
AU - Bassanese, S.
AU - Cinquegrana, P.
AU - Cleva, S.
AU - Danailov, M.B.
AU - Demidovich, A.A.
AU - Di Mitri, S.
AU - Ferianis, M.
AU - Gaio, G.
AU - Gauthier, D.
AU - Giannessi, L.
AU - Predonzani, M.
AU - Rossi, F.
AU - Roussel, E.
AU - Spampinati, S.
AU - Trovò, M.
ED - Schaa, Volker RW
ED - Arduini, Gianluigi
ED - Pranke, Juliana
ED - Seidel, Mike
ED - Lindroos, Mats
TI - Two-Bunch Operation at the FERMI FEL Facility
J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017
C1 - Copenhagen, Denmark
T2 - International Particle Accelerator Conference
T3 - 8
LA - english
AB - FERMI is a linac-driven free electron laser (FEL) based upon the High Gain Harmonic Generation (HGHG) scheme. In standard conditions a bunch of 700 pC of charge with sub mm-mrad emittances is accelerated to 1.2-1.5GeV in a normal conducting S-band linac and drives FEL-1 or FEL-2 undula-tor line, which lase respectively in the range 100-20nm or 20-4nm. A number of two-color schemes have been implemented at FERMI for pump/probe experiments, all consisting in making two portions of the same electron bunch lase at two different wavelengths, with a time-separation from 0 to few hundreds of fs. In order to increase the time separation to ns and tens of ns we have explored the acceleration of two inde-pendent electron bunches separated by multiple of the linac main radio-frequency period, i.e. 333ps. Measure-ments and characterization of this two-bunch mode oper-ation are presented, including trajectory control, impact of longitudinal and transverse wakefields on the trailing bunch and manipulation of the longitudinal phase space.
PB - JACoW
CP - Geneva, Switzerland
SP - 2663
EP - 2665
KW - linac
KW - wakefield
KW - laser
KW - FEL
KW - electron
DA - 2017/05
PY - 2017
SN - 978-3-95450-182-3
DO - 10.18429/JACoW-IPAC2017-WEPAB037
UR - http://jacow.org/ipac2017/papers/wepab037.pdf
ER -