09.12.2012 Views

Abstracts Brochure - CERN

Abstracts Brochure - CERN

Abstracts Brochure - CERN

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

MOPCH019<br />

MOPCH020<br />

26-Jun-06 16:00 - 18:00 MOPCH — Poster Session<br />

the storage ring and the microbunching becomes thermalized. As a consequence, a correct theoretical understanding<br />

of the process requires a proper modelling of the turn-by-turn evolution of the electron-beam phase space, both inside<br />

the undulators (where the FEL interaction takes place) and along the ring. To simulate this process we have coupled<br />

an ad hoc modified version of the 3D numerical code Ginger (which models the FEL interaction) together with a linear<br />

one-turn map (which propagates the electron beam along the ring). We present our results and draw a comparison<br />

with previous simplified approaches. We also present the first benchmarking of experiments carried out with the<br />

ELETTRA storage-ring FEL.<br />

Baseline Design of the Linac Upgrade for Fermi<br />

G. D’Auria, P. Craievich, M.M. Milloch (ELETTRA) L.R. Doolittle,<br />

A. Ratti (LBNL)<br />

50<br />

The FERMI FEL requires a major upgrade of<br />

the existing linac, which needs to be transformed<br />

from being the injector for the ELET-<br />

TRA light source, to becoming the source for<br />

the FERMI FEL. In this work, we present the baseline design, including the integration of the 7 additional systems from<br />

the LIL linac, and one X-band station as linearizers. We will present the new layout with the required modifications<br />

and additions to the existing infrastructure to meet the more demanding needs of the system. Such modifications<br />

include a new RF controller, improvements in the modulator stability and an upgrade to the average power capabilities<br />

of the system to operate at 50 Hz. Test results from the characterization of the existing systems will be included, as<br />

well as plans for future development.<br />

Design and Optimization of the FERMI @ Elettra FEL Layout<br />

G. De Ninno, E. Allaria, B. Diviacco (ELETTRA) W.M. Fawley, G.<br />

Penn (LBNL) W. Graves (MIT)<br />

The FERMI @ ELETTRA project at Sincotrone<br />

Trieste will be comprised of two FEL’s, each<br />

based on the principle of seeded harmonic<br />

generation. The first undulator line, FEL-1,<br />

will operate in the 40-100 nm wavelength range and will rely upon one stage of harmonic up-conversion. The second<br />

undulator line, FEL-2, extends the output spectral domain to the 10 -40 nm wavelength range and will use two harmonic<br />

stages operating as a cascade. We review the FEL studies that have led to the final design and present results of<br />

numerical simulations with GENESIS and GINGER codes including those examining the effects of undulator errors<br />

and shot-to-shot fluctuations in multiple input parameters.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!