Abstracts Brochure - CERN

MOPCH — Poster Session 26-Jun-06 16:00 - 18:00
conventional (periodic) cavity despite the need of accurate machining. A copper prototype made of 17 separated
cells has been built following numerical simulation. In this paper we report on preliminary measurements of its RF
properties. The main characteristics of the cooling system for the final device are also addressed.
Photoemission and Morphological Properties of Mg and Pb Films Deposited by Laser Ablation
and Vacuum Arc
Advanced high brightness injectors require
photocathodes with fast response,high quan- G. Gatti, L. Cultrera, F. Tazzioli, C. Vicario (INFN/LNF)
tum efficiency and good surface uniformity.
Both Mg films deposited by laser ablation and Pb films deposited by vacuum arc could satisfy these requirements.
Their emission and morphology are compared.
Status of the SPARX FEL Project
The SPARX project is an R&D activity to develop
techniques and critical components for
future X-ray FEL facilities. The project is
based on the upgrade of the existing Frascati
800MeV LINAC in order to generate an ultra-high
peak brightness electron beam with
the goal of a single pass FEL experiment
in the range of 3-5 nm, both in SASE and
SEEDED FEL configuration. In this paper
we report the progress of the collaboration
together with start to end simulation results
based on a combined scheme of RF compression
techniques and the use of a tunable magnetic
chicane with positive and negative R56
compression.
Status of the SPARC Project
C. Vaccarezza, D. Alesini, M. Bellaveglia, S. Bertolucci, M.E. Biagini,
R. Boni, M. Boscolo, M. Castellano, A. Clozza, G. Di Pirro, A. Drago,
A. Esposito, M. Ferrario, D. Filippetto, V. Fusco, A. Gallo, A. Ghigo,
S. Guiducci, M. Migliorati, L. Palumbo, L. Pellegrino, M.A. Preger,
C. Sanelli, M. Serio, F. Sgamma, B. Spataro, A. Stella, F. Tazzioli,
M. Vescovi, C. Vicario (INFN/LNF) F. Alessandria, A. Bacci, F.
Broggi, C. De Martinis, D. Giove, M. Mauri (INFN/LASA) L. Catani,
E. Chiadroni, A. Cianchi, C. Schaerf (INFN-Roma II) S. Cialdi, C.
Maroli, V. Petrillo, M. Rome, L. Serafini (INFN-Milano) F. Ciocci, G.
Dattoli, A. Doria, F. Flora, G.P. Gallerano, L. Giannessi, E. Giovenale,
G. Messina, P.L. Ottaviani, G. Parisi, L. Picardi, M. Quattromini, A.
Renieri, C. Ronsivalle (ENEA C.R. Frascati) P. Emma (SLAC) M.
Mattioli (Università di Roma I La Sapienza) A. Mostacci (Rome
University La Sapienza) P. Musumeci (INFN-Roma) S. Reiche, J.B.
Rosenzweig (UCLA)
The SPARC Project is starting the commissioning
of its photo-injector. RF gun, RF L. Serafini (INFN-Milano)
sources, RF network and control, power supplies,
emittance meter, beam diagnostics and control to measure the RF gun beam are installed. The photocathode
drive laser has been characterized in terms of pulse shape and quality. We expect to conduct beam measurements
at RF gun exit in the next future and consequently to start the installation of accelerating sections. The design of
the 12 m undulator for the FEL experiment has been completed and the first undulator section out of 6 is under
construction: we expect to characterize it at Frascati ENEA laboratory within the next months. SPARC as a facility
will host FEL experiments using SASE, seeding and non-linear resonant harmonics. Additional R&D on X-band
and S-band structures for velocity bunching are in progress, as well as studies on new photocathode materials and
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