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M. Bellaveglia

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Last Name: Bellaveglia

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13 papers
title: Self-Amplified Spontaneous Emission Free-Electron Laser with an Energy-Chirped Electron Beam and Undulator Tapering
format: journal article
publisher: Physical Review Letters
year: 8 April 2011
41 authors: L. Giannessi | A. Bacci | M. Bellaveglia | F. Briquez | M. Castellano | E. Chiadroni | A. Cianchi | F. Ciocci | M.E. Couprie | L. Cultrera | G. Dattoli | D. Filippetto | M. Del Franco | G. Di Pirro | M. Ferrario | L. Ficcadenti | F. Frassetto | A. Gallo | G. Gatti | M. Labat | Gabriel Marcus | M. Moreno | A. Mostacci | E. Pace | A. Petralia | V. Petrillo | L. Poletto | M. Quattromini | J.V. Rau | C. Ronsivalle | J.B. Rosenzweig | A.R. Rossi | V. Rossi Albertini | E. Sabia | M. Serluca | S. Spampinati | I. Spassovsky | B. Spataro | V. Surrenti | C. Vaccarezza | C. Vicario
abstract: We report the first experimental implementation of a method based on simultaneous use of an energy chirp in the electron beam and a tapered undulator, for the generation of ultrashort pulses in a self-amplified spontaneous emission mode free-electron laser (SASE FEL). The experiment, performed at the SPARC FEL test facility, demonstrates the possibility of compensating the nominally detrimental effect of the chirp by a proper taper of the undulator gaps. An increase of more than 1 order of magnitude in the pulse energy is observed in comparison to the untapered case, accompanied by FEL spectra where the typical SASE spiking is suppressed.
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title: Experimental Demonstration of Emittance Compensation with Velocity Bunching
format: journal article
publisher: Physical Review Letters
year: 5 February 2010
33 authors: M. Ferrario | D. Alesini | A. Bacci | M. Bellaveglia | R. Boni | M. Boscolo | M. Castellano | E. Chiadroni | A. Cianchi | L. Cultrera | G. Di Pirro | L. Ficcadenti | D. Filippetto | V. Fusco | A. Gallo | G. Gatti | L. Giannessi | M. Labat | B. Marchetti | C. Marrelli | M. Migliorati | A. Mostacci | E. Pace | L. Palumbo | M. Quattromini | C. Ronsivalle | A. R. Rossi | J. Rosenzweig | L. Serafini | M. Serluca | B. Spataro | C. Vaccarezza | C. Vicario
abstract: In this Letter we report the first experiments aimed at the simultaneous demonstration of the emittance compensation process and velocity bunching in a high brightness electron source, the SPARC photoinjector in INFN-LNF. While a maximum compression ratio up to a factor 14 has been observed, in a particular case of interest a compression factor of 3, yielding a slice current of 120 A with less than 2 m slice emittance, has been measured. This technique may be crucial in achieving high brightness beams in photoinjectors aiming at optimized performance of short wavelength single-pass free electron lasers or other advanced applications in laser-plasma accelerators.
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title: Recent results and future perspectives of the SPARC project
format: conference proceeding
conference: EPAC 2008
year: 2008
77 authors: M. Ferrario | D. Alesini | M. Bellaveglia | R. Boni | M. Boscolo | M. Castellano | E. Chiadroni | A. Clozza | L. Cultrera | G. Di Pirro | A. Drago | A. Esposito | L. Ficcadenti | D. Filippetto | V. Fusco | A. Gallo | G. Gatti | A. Ghigo | B. Marchetti | Agostino Marinelli | C. Marrelli | M. Migliorati | A. Mostacci | E. Pace | L. Palumbo | L. Pellegrino | R. Ricci | U. Rotundo | C. Sanelli | F. Sgamma | B. Spataro | F. Tazzioli | S. Tomassini | C. Vaccarezza | M. Vescovi | C. Vicario | F. Ciocci | G. Dattoli | A. Dipace | a. Doria | G. P. Gallerano | L. Giannessi | E. Giovenale | G. Orlandi | S. Pagnutti | A. Petraia | M. Quattromini | C. Ronsivalle | E. Sabia | I. Spassovsky | V. Surrenti | L. Catani | A. Cianchi | M. Mattioli | M. Petrarca | M. Serluca | A. Bacci | I. Boscolo | F.Broggi | F. Castelli | S. Cialdi | C. De Martinis | D. Giove | C. Maroli | V. Petrillo | A.R. Rossi | L. Serafini | J.B. Rosenzweig | M. E. Couprie | M. Bougeard | B. Carré | D. Garzella | M. Labat | G. Lambert | H. Merdji | P. Salières | O. Tchebakoff
abstract: The SPARC project foresees the realization of a high brightness photo-injector to produce a 150-200 MeV electron beam to drive 500 nm FEL experiments in various configurations, a Thomson backscattering source and a plasma accelerator experiment (these last two ones jointly with the project PLASMONX). The SPARC photoinjector is also the test facility for the recently approved VUV FEL project named SPARX. As a first stage of the commissioning, a complete characterization of the photoinjector has been accomplished with a detailed study of the emittance compensation process downstream the gun-solenoid system: this lead to the first direct experimental demonstration of emittance oscillations in a drift. The second stage of the commissioning, that is currently underway, foresees a detailed analysis of the beam matching with the linac in order to confirm the theoretically prediction of emittance compensation based on the invariant envelope matching and the demonstration of the velocity bunching technique in the linac. SASE and SEEDING experiments are foreseen by the end of the current year. In this paper we report the experimental results obtained so far and the scientific program for the near future.
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title: High brightness electron beam emittance evolution measurements in an rf photoinjector
format: journal article
publisher: Physical Review Special Topics- Accelerators and Beams
year: 2008
48 authors: A. Cianchi | D. Alesini | A. Bacci | M. Bellaveglia | R. Boni | M. Boscolo | M. Castellano | L. Catani | E. Chiadroni | S. Cialdi | A. Clozzo | L. Cultrera | G. Di Pirro | A. Drago | A. Esposito | M. Ferrario | L. Ficcadenti | D. Filippetto | V. Fusco | A. Gallo | G. Gatti | A. Ghigo | L. Giannessi | C. Ligi | M. Mattioli | M. Migliorati | A. Mostacci | P. Musumeci | E. Pace | L. Palumbo | L. Pellegrino | M. Petrarca | M. Preger | M. Quattromini | R. Ricci | C. Ronsivalle | J.B. Rosenzweig | A.R. Rossi | C. Sanelli | L. Serafini | M. Serio | F. Sgamma | B. Spataro | F. Tazzioli | S. Tomassini | C. Vaccarezza | M. Vescovi | and C. Vicario
abstract: The new generation of linac injectors driving free electron lasers in the self-amplified stimulated emission (SASE-FEL) regime requires high brightness electron beams to generate radiation in the wavelength range from UV to x rays. The choice of the injector working point and its matching to the linac structure are the key factors to meet this requirement. An emittance compensation scheme presently applied in several photoinjectors worldwide is known as the ��Ferrario�� working point. In spite of its great importance there was, so far, no direct measurement of the beam parameters, such as emittance, transverse envelope, and energy spread, in the region downstream the rf gun and the solenoid of a photoinjector to validate the effectiveness of this approach. In order to fully characterize the beam dynamics with this scheme, an innovative beam diagnostic device, the emittance meter, consisting of a movable emittance measurement system, has been designed and built. With the emittance meter, measurements of the main beam parameters in both transverse phase spaces can be performed in a wide range of positions downstream the photoinjector. These measurements help in tuning the injector to optimize the working point and provide an important benchmark for the validation of simulation codes. We report the results of these measurements in the SPARC photoinjector and, in particular, the first experimental evidence of the double minimum in the emittance oscillation, which provides the optimized matching to the SPARC linac.
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title: Direct Measurement of the Double Emittance Minimum in the Beam Dynamics of the Sparc High-Brightness Photoinjector
format: journal article
publisher: Physical Review Letters
year: 6 December 2007
47 authors: M. Ferrario | D. Alesini | A. Bacci | M. Bellaveglia | R. Boni | M. Boscolo | M. Castellano | L. Catani | E. Chiadroni | S. Cialdi | A. Cianchi | A. Clozza | L. Cultrera | G. Di Pirro | A. Drago | A. Esposito | L. Ficcadenti | D. Filippetto | V. Fusco | A. Gallo | G. Gatti | A. Ghigo | L. Giannessi | C. Ligi | M. Mattioli | M. Migliorati | A. Mostacci | P. Musumeci | E. Pace | L. Palumbo | L. Pellegrino | M. Petrarca | M. Quattromini | R. Ricci | C. Ronsivalle | J.B. Rosenzweig | A.R. Rossi | C. Sanelli | L. Serafini | M. Serio | F. Sgamma | B. Spataro | F. Tazzioli | S. Tomassini | C. Vaccarezza | M. Vescovi | C. Vicario
abstract: In this Letter we report the first experimental observation of the double emittance minimum effect in the beam dynamics of high-brightness electron beam generation by photoinjectors; this effect, as predicted by the theory, is crucial in achieving minimum emittance in photoinjectors aiming at producing electron beams for short wavelength single-pass free electron lasers. The experiment described in this Letter was performed at the SPARC photoinjector site, during the first stage of commissioning of the SPARC project. The experiment was made possible by a newly conceived device, called an emittance meter, which allows a detailed and unprecedented study of the emittance compensation process as the beam propagates along the beam pipe.
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title: Status of the SPARC-X Project
format: conference proceeding
conference: PAC 2007
year: 2007
97 authors: C. Vaccarezza | D. Alesini | M. Bellaveglia | S. Bertolucci | R. Boni | M. Boscolo | M. Castellano | A. Clozza | L. Cultrera | G. Di Pirro | A. Drago | A. Esposito | M. Ferrario | L. Ficcadenti | D. Filippetto | V. Fusco | A. Gallo | G. Gatti | A. Ghigo | C. Ligi | Agostino Marinelli | M. Migliorati | A. Mostacci | E. Pace | L. Palumbo | L. Pellegrino | M. Preger | R. Ricci | C. Sanelli | M. Serio | F. Sgamma | B. Spataro | A. Stella | F. Tazzioli | M. Vescovi | C. Vicario | F. Ciocci | G. Dattoli | A. Dipace | A. Doria | F. Flora | G.P. Gallerano | L. Giannessi | E. Giovenale | G. Messina | P.L. Ottaviani | S. Pagnutti | G. Parisi | L. Picardi | M. Quattromini | A. Renieri | G. Ronci | C. Ronsivalle | M. Rosetti | E. Sabia | M. Sassi | A. Torre | A. Zucchini | M. Mattioli | D. Pelliccia | L. Catani | E. Chiadroni | A. Cianchi | E. Gabrielli | C. Schaerf | P. Musumeci | M. Petrarca | F. Alessandria | A. Bacci | R. Bonifacio | I. Boscolo | F. Broggi | C. De Martinis | F. Castelli | S. Cialdi | D. Giove | A. Flacco | C. Maroli | V. Petrillo | A.R. Rossi | L. Serafini | A. Perrone | M. Labat | O. Tcherbakoff | G. Lambert | D. Garzella | M. Bougeard | P. Breger | P. Monchicourt | H. Merdji | P. Salie?res | B. Carre? | M. E. Couprie | P. Emma | C. Pellegrini | S. Reiche | J.B. Rosenzweig
abstract: SPARC-X is a two branch project consisting in the SPARC test facility dedicated to the development and test of critical subsystems such as high brightness photoinjector and a modular expandable undulator for SASE-FEL experiments at 500 nm with seeding, and the SPARX facility aiming at generation of high brilliance coherent radiation in the 1.5-13 nm range, based on the achieved expertise. The projects are supported by MIUR (Research Department of Italian Government) and Regione Lazio. SPARC has completed the commissioning phase of the photoinjector in November 2006. The achieved experimental results are here summarized together with the status of the second phase commissioning plans. The SPARX project is based on the generation of ultra high peak brightness electron beams at the energy of 1 and 2 GeV generating radiation in the 1.5-13 nm range. The construction is at the moment planned in two steps starting with a 1 GeV Linac. The project layout including both RF-compression and magnetic chicane techniques has been studied.
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title: OPTIMUM ELECTRON BUNCH CREATION IN A PHOTOINJECTOR USING SPACE-CHARGE EXPANSION
format: conference proceeding
conference: PAC 2007
year: 2007
16 authors: J.B. Rosenzweig | A.M. Cook | M. Dunning | R.J. England | P. Musumeci | M. Bellaveglia | M. Boscolo | L. Catani | A. Cianchi | G. Di Pirro | M. Ferrario | D. Filippetto | G. Gatti | L. Palumbo | C. Vicario | S. Jones
abstract: Recent studies have shown that by illuminating a pho- tocathode with an ultra-short laser pulse of appropriate transverse profile, a uniform density, ellipsoidally shaped electron bunch can be dynamically formed. Linear space- charge fields then exist in all dimensions inside of the bunch, which minimizes emittance growth. Here we study this process, and its marriage to the standard emittance compensation scenario that is implemented in most modern photoinjectors. We show that the two processes are com- patible, with simulations indicating that a very high bright- ness beam can be obtained. An initial time-resolved experi- ment has been performed at the SPARC injector in Frascati, involving Cerenkov radiation produced at an aerogel. We discuss the results of this preliminary experiment, as well as plans for future experiments at the UCLA Pegasus labo- ratory to resolve the ellipsoidal bunch shape at low energy. Future measurements at high energy based on fs resolution RF sweepers are discussed.
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title: Optimum Beam Creation In Photoinjectors Using Space-Charge Expansion
format: conference proceeding
conference: FEL 2006 28th
year: 2006
16 authors: J.B. Rosenzweig | A.M. Cook | M. Dunning | R. J. England | M. Bellaveglia | M. Boscolo | L. Catani | A. Cianchi | G. Di Pirro | M. Gerrario | D. Filippetto | G. Gatti | P. Musumeci | L. Palumbo | C. Vicario | S. Jones
abstract: It has recently been shown that by illuminating a photocathode with an ultra-short laser pulse of appropriate transverse profile, a uniform density, ellipsoidally shaped bunch is dynamically formed, which then has linear space-charge fields in all dimensions inside of the bunch. We study here this process, and its marriage to the standard emittance compensation scenario that is implemented in most modern photoinjectors. It is seen that the two processes are compatible, with simulations indicating that a very high brightness beam can be obtained. The scheme has produced stimulus for a series of experiments at the SPARC injector at Frascati in 2006-2007. An initial time-resolved experiment has been performed involving Cerenkov radiation produced at an aerogel. We discuss the results of this preliminary experiment, as well as plans for future experiments to resolve the ellipsoidal bunch shape at low energy. Future measurements at high energy based on fs resolution RF sweepers are discussed.
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title: Status of the SPARC Photoinjector
format: conference proceeding
conference: Linear Accelerator Conference 2006
year: 2006
69 authors: D. Alesini | M. Bellaveglia | S. Bertolucci | R. Boni | M. Boscolo | M. Castellano | A. Clozza | L. Cultrera | G. Di Pirro | A. Drago | A. Esposito | M. Ferrario | L. Ficcadenti | D. Filippetto | V. Fusco | G. Gatti | A. Gallo | A. Ghigo | M. Incurvati | C. Ligi | F. Marcellini | M. Migliorati | A. Mostacci | L. Palumbo | L. Pellegrino | M. Preger | R. Ricci | C. Sanelli | M. Serio | F. Sgamma | B. Spataro | A. Stecchi | A. Stella | F. Tazzioli | C. Vaccarezza | M. Vescovi | C. Vicario | F. Alessandria | A. Bacci | I. Boscolo | F. Broggi | S.Cialdi | C. DeMartinis | D. Giove | C. Maroli | M. Mauri | V. Petrillo | M. Rome | A. R. Rossi | L. Serafini | D. Levi | M. Mattioli | P. Musumeci | G. Medici | D. Pelliccia | M. Petrarca | L. Catani | E. Chiadroni | A. Cianchi | E. Gabrielli | S. Tazzari | A. Perrone | L. Giannessi | L. Picardi | M. Quattromini | C. Ronsivalle | J.B. Rosenzweig | G. Travish | S. Reiche
abstract: The SPARC Project is starting the commissioning of its photo-injector. RF gun, RF sources, RF network and control, power supplies, emittance meter, beam diagnostics and control to measure the RF gun beam have been installed. The photocathode drive laser has been characterized in terms of pulse shape and quality. We will report also about first tests made on RF gun and on the emittance meter device. Additional R&D on X-band and S-band structures for velocity bunching are in progress, as well as studies on new photocathode materials. We will also discuss studies on solenoid field defects, beam based alignments and exotic electron bunch production via blow-out of short laser pulses.
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title: Status of the SPARX FEL Project
format: conference proceeding
conference: EPAC 2006
year: 2006
67 authors: C.Vaccarezza | D.Alesini | M.Bellaveglia | S.Bertolucci | M.E Biagini | R.Boni | M.Boscolo | M.Castellano | A.Clozza | L.Cultrera | 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.Preger | C.Sanelli | M.Serio | F.Sgamma | B.Spataro | A.Stella | F.Tazzioli | M.Vescovi | C.Vicario | F. Ciocci | G.Dattoli | A.Doria | F.Flora | G.Gallerano | L.Giannessi | E.Giovenale | G.Messina | P.L. Ottaviani | G.Parisi | L.Picardi | M.Quattromini | A.Renieri | C. Ronsivalle | S.Cialdi | C.Maroli | V.Petrillo | M. Rome | L.Serafini | L.Catani | E.Chiadroni | A. Cianchi | C.Schaerf | P.Musumeci | F.Alessandria | A.Bacci | F.Broggi | C.De Martinis | D.Giove | M.Mauri | L. Ficcadenti | M.Mattioli | A.Mostacci | P.Emma | S.Reiche | J.B. Rosenzweig
abstract: The SPARX project consists in an X-ray-FEL facility jointly supported by MIUR (Research Department of Italian Government), Regione Lazio, CNR, ENEA, INFN and Rome University Tor Vergata. It is the natural extension of the ongoing activities of the SPARC collaboration. The aim is the generation of electron beams characterized by ultra-high peak brightness at the energy of 1 and 2 GeV, for the first and the second phase respectively. The beam is expected to drive a single pass FEL experiment in the range of 13.5�6 nm and 6�1.5 nm, at 1 GeV and 2 GeV respectively, both in SASE and SEEDED FEL configurations. A hybrid scheme of RF and magnetic compression will be adopted, based on the expertise achieved at the SPARC high brightness photoinjector presently under commissioning at Frascati INFN-LNF Laboratories [1,2]. The use of superconducting and exotic undulator sections will be also exploited. 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.
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title: EXPERIMENTAL TESTING OF DYNAMICALLY OPTIMIZED PHOTOELECTRON BEAMS
format: conference proceeding
conference: Erice 2005
year: 2006
16 authors: J.B. Rosenzweig | A.M. Cook | M. Dunning | R. J. England | P. Musumeci | M. Bellaveglia | M. Boscolo | L. Catani | A. Cianchi | G. Di Pirro | M. Ferrario | D. Filipetto | G. Gatti | L. Palumbo | L. Serafini | C. Vicario
abstract: We discuss the design of and initial results from an experiment in space-charge dominated beam dynamics which explores a new regime of high-brightness electron beam generation at the SPARC (located at INFN-LNF, Frascati) photoinjector. The scheme under study employs the natural tendency in intense electron beams to configure themselves to produce a uniform density, giving a nearly ideal beam from the viewpoint of space charge-induced emittance. The experiments are aimed at testing the marriage of this idea with a related concept, emittance compensation, We show that the existing infrastructure at SPARC is nearly ideal for the proposed tests, and that this new regime of operating photoinjector may be the preferred method of obtaining highest brightness beams with lower energy spread. We discuss the design of the experiment, including developing of a novel time-dependent, aerogel-based imaging system. This system has been installed at SPARC, and first evidence for nearly uniformly filled ellipsoidal charge distributions recorded.
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title: Status Report on SPARC Project
format: conference proceeding
conference: FEL 2004 26th
year: 2004
96 authors: A. Renieri | M. Carpanese | F. Ciocci | G. Dattoli | A. Di Pace | A. Doria | F. Flora | G. P. Gallerano | L. Giannessi | E. Giovenale | G. Messina | L. Mezi | P. L. Ottaviani | S. Pagnutti | G. Parisi | L. Picardi | M. Quattromini | G. Ronci | C. Ronsivalle | E. Sabia | M. Sassi | A. Zucchini | D. Alesini | M. Bellaveglia | S. Bertolucci | M.E. Biagini | C. Biscari | 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. Incurvati | C. Ligi | F. Marcellini | M. Migliorati | C. Milardi | L. Palumbo | L. Pellegrino | M. Preger | P. Raimondi | R. Ricci | C. Sanelli | M. Serio | F. Sgamma | B. Spataro | A. Stecchi | A. Stella | F. Tazzioli | C. Vaccarezza | M. Vescovi | C. Vicario | M. Zobov | F. Alessandria | A. Bacci | I. Boscolo | F. Broggi | S. Cialdi | C. De Martinis | D. Giove | C. Maroli | V. Petrillo | M. Romè | L. Serafini | D. Levi | M. Mattioli | G. Medici | P. Musumeci | L. Catani | E. Chiadroni | S. Tazzari | C.J. Bocchetta | M. Danailov | G. D'Auria | M. Ferianis | A. Cianchi | A. D'Angelo | R. Di Salvo | A. Fantini | D. Moricciani | C. Schaerf | S. Reiche | J.B. Rosenzweig | G. Travish | D.H. Dowell | P. Emma | C. Limborg | D. Palmer
abstract: We review the status of FEL source activity of the ongoing SPARC FEL experiment, developed within the framework of a collaboration among ENEA, CNR, INFN, INFM, Sincrotrone Trieste and University of Rome Tor Vergata. The project is aimed at realising a SASE-FEL source, operating in the visible (around 500 nm), with an extended range of tunability down to the VUV (100 nm) by the use of the mechanism of non-linear harmonic generation. The development of the relevant activities foresees the realisation of an advanced 150 MeV photo- injector source, aimed at producing a high brightness electron beams, needed to drive a SASE-FEL experiment, and a 14 m long undulator. We present the status of the design and construction of SPARC FEL device. In particular we discuss the choice of the project parameters, their optimisation and the sensitivity of the SPARC performance to any parameter variation. We will show, using start-to-end simulations, what is the impact of the e- beam and of the undulator parameters on the characteristics of the output laser field and in particular on the amount of the non-linearly generated power at higher harmonics.
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title: The SPARX project: R & D Activity towards X-Ray Sources
format: journal article
publisher:
year: 2004
80 authors: D.Alesini | S.Bertolucci | M. Bellaveglia | 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.Incurvati | C.Ligi | F.Marcellini | M.Migliorati | A.Mostacci | L.Palumbo | L.Pellegrino | M.Preger | P. Raimondi | R.Ricci | C.Sanelli | M.Serio | F.Sgamma | B.Spataro | A.Stecchi | A.Stella | F.Tazzioli | C.Vaccarezza | M.Vescovi | C.Vicario | F.Alessandria | A.Bacci | I.Boscolo | F.Broggi | S.Cialdi | C.De Martinis | D.Giove | C.Maroli | M. Mauri | V.Petrillo | M. Romè | L.Serafini | M.Mattioli | P. Musumeci | L.Catani | E.Chiadroni | A. Cianchi | C. Schaerf | F.Ciocci | G.Dattoli | A. Di Pace | A.Doria | F.Flora | G.P.Gallerano | L.Giannessi | E.Giovenale | G.Messina | L.Mezi | P.L.Ottaviani | S. Pagnutti | G. Parisi | L.Picardi | M.Quattromini | A.Renieri | C.Ronsivalle | A. Torre | A. Zucchini | S. De Silvestri | M. Nisoli | S. Stagira | J.B. Rosenzweig | S. Reiche | P.Emma
abstract: SPARX is an evolutionary project proposed by a collaboration among ENEA-INFN-CNR-Universita` di Roma Tor Vergata aiming at the construction of a FEL- SASE X-ray source in the Tor Vergata Campus. The first phase of the SPARX project, funded by Government Agencies, will be focused on R&D activity on critical components and techniques for future X-ray facilities as described in this paper.
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