Control of Seeded FEL Pulse Duration Using Laser Heater Pulse Shaping

Grattoni, Vanessa; Allaria, Enrico; Badano, Laura; Danailov, Miltcho; Demidovich, Alexander; Di Mitri, Simone; Ferrari, Eugenio; Giannessi, Luca; Penco, Giuseppe; Roussel, ElÃ©onore; Sigalotti, Paolo; Spampinati, Simone; Trovò, Mauro; Veronese, Marco

doi:10.18429/JACoW-IPAC2017-WEPAB034

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RIS citation export for WEPAB034: Control of Seeded FEL Pulse Duration Using Laser Heater Pulse Shaping

TY - CONF
AU - Grattoni, V.
AU - Allaria, E.
AU - Badano, L.
AU - Danailov, M.B.
AU - Demidovich, A.A.
AU - Di Mitri, S.
AU - Ferrari, E.
AU - Giannessi, L.
AU - Penco, G.
AU - Roussel, E.
AU - Sigalotti, P.
AU - Spampinati, S.
AU - Trovò, M.
AU - Veronese, M.
ED - Schaa, Volker RW
ED - Arduini, Gianluigi
ED - Pranke, Juliana
ED - Seidel, Mike
ED - Lindroos, Mats
TI - Control of Seeded FEL Pulse Duration Using Laser Heater Pulse Shaping
J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017
C1 - Copenhagen, Denmark
T2 - International Particle Accelerator Conference
T3 - 8
LA - english
AB - New Free-Electron Laser facilities deliver VUV and X-ray radiation with pulse length in the range of hundreds and tens of fs. A further reduction of the FEL pulse length is desired by those experiments aiming at probing ultrafast phenomena. Unlike SASE FEL, where the pulse duration is mainly driven by the electron bunch duration, in a seeded FEL the pulse duration can be determined by the seed laser properties. The use of techniques able to locally deteriorate the electron beam properties such as emittance or energy spread have been used in SASE FELs to reduce the region of the electron beam that is able to produce FEL radiation and hence reduce the FEL pulse length. The temporal shaping of the laser heater can be used to create an electron beam characterized by a very large energy spread all along the bunch except for a small region. We report measurements of the effect of the laser heater shaping on the electron beam phase-space performed at FERMI. Impact on the final FEL pulse properties are predicted with a series of numerical simulations.
PB - JACoW
CP - Geneva, Switzerland
SP - 2654
EP - 2656
KW - laser
KW - electron
KW - FEL
KW - simulation
KW - experiment
DA - 2017/05
PY - 2017
SN - 978-3-95450-182-3
DO - 10.18429/JACoW-IPAC2017-WEPAB034
UR - http://jacow.org/ipac2017/papers/wepab034.pdf
ER -