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125 results on '"F. Ciocci"'

1. Seeded free electron laser operating with two colors: Comments on experimental results

Author: M. Carpanese, F. Ciocci, G. Dattoli, A. Petralia, V. Petrillo, and A. Torre
Subjects: Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Free electron lasers operating with two colors are promising devices for applications. The relevant modelization has provided a good understanding of the underlying physics. In this paper we present an analysis of the experimental results obtained at SPARC_LAB concerning seeded two-colors free electron laser (FEL) operation. The use of an ad hoc developed semi-analytical model based on the small-signal FEL integral equation reproduces most of the observed phenomenology. The paper discusses the reliability of the proposed method, the range of validity and its possible improvement.
Published: 2016
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2. Self-amplified spontaneous emission free electron laser devices and nonideal electron beam transport

Author: L. L. Lazzarino, E. Di Palma, M. P. Anania, M. Artioli, A. Bacci, M. Bellaveglia, E. Chiadroni, A. Cianchi, F. Ciocci, G. Dattoli, D. Di Giovenale, G. Di Pirro, M. Ferrario, G. Gatti, L. Giannessi, A. Mostacci, P. Musumeci, A. Petralia, V. Petrillo, R. Pompili, J. V. Rau, A. R. Rossi, E. Sabia, C. Vaccarezza, and F. Villa
Subjects: Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: We have developed, at the SPARC test facility, a procedure for a real time self-amplified spontaneous emission free electron laser (FEL) device performance control. We describe an actual FEL, including electron and optical beam transport, through a set of analytical formulas, allowing a fast and reliable on-line “simulation” of the experiment. The system is designed in such a way that the characteristics of the transport elements and the laser intensity are measured and adjusted, via a real time computation, during the experimental run, to obtain an on-line feedback of the laser performances. The detail of the procedure and the relevant experimental results are discussed.
Published: 2014
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3. Self-amplified spontaneous emission for a single pass free-electron laser

Author: L. Giannessi, D. Alesini, P. Antici, A. Bacci, M. Bellaveglia, R. Boni, M. Boscolo, F. Briquez, M. Castellano, L. Catani, E. Chiadroni, A. Cianchi, F. Ciocci, A. Clozza, M. E. Couprie, L. Cultrera, G. Dattoli, M. Del Franco, A. Dipace, G. Di Pirro, A. Doria, A. Drago, W. M. Fawley, M. Ferrario, L. Ficcadenti, D. Filippetto, F. Frassetto, H. P. Freund, V. Fusco, G. Gallerano, A. Gallo, G. Gatti, A. Ghigo, E. Giovenale, A. Marinelli, M. Labat, B. Marchetti, G. Marcus, C. Marrelli, M. Mattioli, M. Migliorati, M. Moreno, A. Mostacci, G. Orlandi, E. Pace, L. Palumbo, A. Petralia, M. Petrarca, V. Petrillo, L. Poletto, M. Quattromini, J. V. Rau, S. Reiche, C. Ronsivalle, J. Rosenzweig, A. R. Rossi, V. Rossi Albertini, E. Sabia, L. Serafini, M. Serluca, I. Spassovsky, B. Spataro, V. Surrenti, C. Vaccarezza, M. Vescovi, and C. Vicario
Subjects: Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: SPARC (acronym of “Sorgente Pulsata ed Amplificata di Radiazione Coerente”, i.e. Pulsed and Amplified Source of Coherent Radiation) is a single pass free-electron laser designed to obtain high gain amplification at a radiation wavelength of 500 nm. Self-amplified spontaneous emission has been observed driving the amplifier with the high-brightness beam of the SPARC linac. We report measurements of energy, spectra, and exponential gain. Experimental results are compared with simulations from several numerical codes.
Published: 2011
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4. Insertion Devices For Synchrotron Radiation And Free Electron Laser

Author: F Ciocci, Giuseppe Dattoli, Alberto Renieri
Published: 2000

5. EuPRAXIA@SPARC_LAB Design study towards a compact FEL facility at LNF

Author: S. Romeo, Alberto Bacci, F. Broggi, D. Alesini, Arie Zigler, E. Turco, Stefano Lupi, A. Ghigo, Silvia Licciardi, Daniel Schulte, Susanna Guiducci, F. Ciocci, Riccardo Pompili, Marco Bellaveglia, D. Cirrincione, M. Faiferri, G. Campogiani, Andrea Michelotti, Anna Giribono, M Marini, Angelo Stella, Adolfo Esposito, D. Di Giovenale, Fernando Brandi, Marcello Coreno, F. Mira, S. Pagnutti, L. A. Gizzi, Marco Marongiu, Vladimir Shpakov, Alessandro Ricci, M. G. Castellano, M. Artioli, P.L. Campana, Roberto Cimino, E. Brentegani, Luca Giannessi, Vittoria Petrillo, Luigi Pellegrino, Luca Ficcadenti, Cristina Vaccarezza, G. Di Pirro, Alessandro Curcio, I. Debrot, Giovanni Castorina, C. Cannaos, Giuseppe Dattoli, Fabio Cardelli, Alessandro Stecchi, M. Croia, M. Rossetti Conti, Federico Nguyen, Simona Incremona, G. Costa, V. Martinelli, U. Rotundo, Roberto Bedogni, Maria Pia Anania, Velia Minicozzi, Massimo Ferrario, G.A.P. Cirrone, Alessandro Variola, F. Pusceddu, Andrea Mostacci, R. Clementi, Stefano Pioli, Fabio Villa, Angelo Biagioni, Oscar Frasciello, Francesco Filippi, Regina Rochow, Andrea Rossi, Luca Piersanti, Elio Sabia, A. Drago, Valentina Scuderi, A. Petralia, Ruggero Ricci, Alessandro Cianchi, A. Grudiev, Fabrizio Bisesto, R. Manca, Augusto Marcelli, Bruno Buonomo, S. Vescovi, Francesco Stellato, O. Sans Plannell, A. Vacchi, Alessandro Vannozzi, Roberto Corsini, Francesco Iungo, M. Diomede, Sultan B. Dabagov, Lucia Sabbatini, Silvia Morante, S. Bartocci, Petra Koester, Gerardo D'Auria, Bruno Spataro, J. Scifo, Enrica Chiadroni, C. Milardi, Alberto Marocchino, V. Lollo, James Rosenzweig, S. Di Mitri, Andrea Latina, Giacomo Cuttone, D. Polese, N. Catalan Lasheras, Luca Serafini, Claudio Masciovecchio, M. Carpanese, Luca Labate, Costantino Carlo Mastino, Sergio Cantarella, Alessandro Gallo, Walter Wuensch, Mikhail Zobov, and C. Curatolo
Subjects: Accelerator Physics (physics.acc-ph), Brightness, Nuclear and High Energy Physics, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, Linear particle accelerator, 010305 fluids & plasmas, Plasma accelerator, Free Electron Laser, compact accelerator, Instrumentation, Optics, X-band RF linac, 0103 physical sciences, 010306 general physics, Advanced accelerator concepts, High brightness beams, physics.acc-ph, Physics, business.industry, Settore FIS/01 - Fisica Sperimentale, Free-electron laser, Plasma, Accelerators and Storage Rings, Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin), Design study, Physics - Accelerator Physics, business
Abstract: On the wake of the results obtained so far at the SPARC_LAB test-facility at the Laboratori Nazionali di Frascati (Italy), we are currently investigating the possibility to design and build a new multi-disciplinary user-facility, equipped with a soft X-ray Free Electron Laser (FEL) driven by a ∼ 1 GeV high brightness linac based on plasma accelerator modules. This design study is performed in synergy with the EuPRAXIA design study. In this paper we report about the recent progresses in the on going design study of the new facility. On the wake of the results obtained so far at the SPARC\_LAB test-facility at the Laboratori Nazionali di Frascati (Italy), we are currently investigating the possibility to design and build a new multi-disciplinary user-facility, equipped with a soft X-ray Free Electron Laser (FEL) driven by a $\sim$1 GeV high brightness linac based on plasma accelerator modules. This design study is performed in synergy with the EuPRAXIA design study. In this paper we report about the recent progresses in the on going design study of the new facility.
Published: 2018
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6. First operation of a compact FEL in the millimeter wave region

Author: F. Ciocci
Subjects: Physics, Wavelength, Range (particle radiation), Optics, business.industry, law, Extremely high frequency, Undulator, business, Laser, Microtron, Power (physics), law.invention
Abstract: We report the first operation of a compact free-electron laser at wavelengths in the range between 2 and 2.6 mm with ouput power up to 1 kW in 4 us pulses. The innovative characteristics of this device, driven by a 2.3 MeV microtron, is its considerable small size, obtained by using a short undulator with 8 periods of 2.5 cm.
Published: 2017
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7. IRIDE: Interdisciplinary research infrastructure based on dual electron linacs and lasers

Author: Marco Ripani, F. Broggi, C. Guaraldo, Paolo Pierini, Mauro Migliorati, Vittoria Petrillo, Cristina Vaccarezza, Giancarlo Gatti, M. Collini, D. Babusci, Giuseppe Mandaglio, James Rosenzweig, P. Gauzzi, Calogero Pace, Massimo Reconditi, F. Sannibale, L. Catani, Claudio Quaresima, L. De Caro, Andrea Orecchini, Luca Serafini, S. Andreas, M. Capone, Jorge Portolés, M. Iannone, D. Alesini, V. Calo, M. Coreno, T. Spadaro, M. Passera, Marco Bellaveglia, Andrea Ghigo, Stefano Lupi, C. F. Papadopoulos, Gianluca Sarri, Keisuke Hatada, Luca Trentadue, M. Bolognesi, Maurizio Benfatto, D. Moricciani, Andrea Macchi, A. Di Cicco, Rodolfo Bonifacio, A. Tenore, Giorgio Contini, Federica Migliardo, Michele Cianci, Pere Masjuan, Andrzej Kupsc, E. Di Palma, Maria Pia Anania, Carlo Mariani, Gianluca Colò, Mikhail Zobov, S. Della Longa, V. Chiarella, R. Ricci, P.L. Ottaviani, Pasquale Londrillo, Carlo Pagani, W. Kluge, Alberto Bacci, P. Valente, J. Sekutowicz, Gian Piero Gallerano, Giovanni Mazzitelli, V. Muccifora, A. Ferrari, Federico Boscherini, Massimo Petrarca, Mauro Gambaccini, Alessandro Arcovito, G. Margutti, Sultan B. Dabagov, Enrica Chiadroni, C. Di Donato, L. A. Gizzi, R. Boni, Roberto Gunnella, L. Palumbo, Oscar Frasciello, M. Alessandroni, A. Gallo, Maddalena Pedio, Giovanni Ricco, P. Levi Sandri, Augusto Marcelli, Massimo Ferrario, Marco Capogni, M. Paci, L. Quintieri, Francesco Spinozzi, G. Delle Monache, Adolfo Esposito, U. Dosselli, Andrea Castoldi, Bruno Buonomo, Nicola Rosato, T. Prosperi, D. Di Giovenale, Catalina Curceanu, Alessandro Cianchi, Claudio Masciovecchio, Danilo Giulietti, G. Di Pirro, F. Rossi, R. Faccini, Rafel Escribano, Chiara Guazzoni, Ivan Davoli, G. A. Marzo, Bruno Spataro, G. Chirico, F. Murtas, G. Organtini, Fabio Villa, Andrea Vacchi, Fred Jegerlehner, Giacomo Claudio Ghiringhelli, L. Fulgentini, M. Losacco, A. Pietropaolo, Andrea Doria, E. Ripiccini, G. Cavoto, A. Filabozzi, A. A. Rossi, Antonella Balerna, A. D. Polosa, M. Mattioli, F. Ciocci, Daniela Russo, M. Artioli, Alessandro Ricci, Paolo Mariani, Daniele Filippetto, M. G. Castellano, Nicola Zema, Roberto Bedogni, F. Nguyen, Emilio Giovenale, Nadia Cherubini, Luca Giannessi, K. Dupraz, S. Loreti, A. Dodaro, S. Romeo, S. Pagnutti, V. De Leo, Stephen V. Milton, S. Salducco, O. Shekhovtsova, G. Venanzoni, G. Giardina, S. Dell Agnello, Francesco Sacchetti, Caterina Petrillo, Francesco Fiori, Andrea Rossi, Ivan Spassovsky, Antonella Lorusso, Amalia Torre, F. Bossi, Lorenzo Avaldi, Daniele Catone, Paola Bolognesi, Francesca Curciarello, Giuseppe Dattoli, Francesco Stellato, A. Compagno, K. Cassou, P. Michelato, Roberto Cimino, S. Vescovi, Alberto Clozza, Annalaura Sabatucci, Patrick O Keeffe, F. Arnesano, Salvatore Magazù, C. Giannini, Riccardo Pompili, Fabian Zomer, Giuseppe Zanotti, R. Cucini, D. Di Gioacchino, Sergio Bartalucci, F. Giorgianni, E. Pace, Sandra Biedron, Vincenzo Lombardi, S. Turchini, V. Bocci, P. De Felice, Alessio Perrone, Silvia Morante, Vincenzo Surrenti, Tullio Scopigno, Mario Pillon, G. C. Panaccione, Maurizio Angelone, Gianna Rossi, A. Stecchi, Manuela Boscolo, C. Milardi, A. Lukin, Claudio Gatti, S. Mobilio, Andrea Mostacci, M. Cestelli-Guidi, S. Ivashyn, L. Labate, Elio Sabia, A. Drago, Concetta Ronsivalle, Filippo Bencivenga, Daniele Sertore, Enrico Dainese, Pietro Musumeci, A. Petralia, Massimiliano Papi, Julietta V. Rau, Luca Pasquini, V.G. Palmieri, M. De Spirito, G. Ricciardi, N. P. Merenkov, Velia Minicozzi, Edoardo Milotti, Ricciardi, Giulia, Ferrario, M., Alesini, D., Alessandroni, M., Anania, M. P., Andreas, S., Angelone, M., Arcovito, A., Arnesano, F., Artioli, M., Avaldi, L., Babusci, D., Bacci, A., Balerna, A., Bartalucci, S., Bedogni, R., Bellaveglia, M., Bencivenga, F., Benfatto, M., Biedron, S., Bocci, V., Bolognesi, M., Bolognesi, P., Boni, R., Bonifacio, R., Boscherini, F., Boscolo, M., Bossi, F., Broggi, F., Buonomo, B., Calo, V., Catone, D., Capogni, M., Capone, M., Cassou, K., Castellano, M., Castoldi, A., Catani, L., Cavoto, G., Cherubini, N., Chirico, G., Cestelli Guidi, M., Chiadroni, E., Chiarella, V., Cianchi, A., Cianci, M., Cimino, R., Ciocci, F., Clozza, A., Collini, M., Colo, G., Compagno, A., Contini, G., Coreno, M., Cucini, R., Curceanu, C., Curciarello, F., Dabagov, S., Dainese, E., Davoli, I., Dattoli, G., De Caro, L., De Felice, P., De Leo, V., Dell Agnello, S., Della Longa, S., Delle Monache, G., De Spirito, M., Di Cicco, A., Di Donato, C., Di Gioacchino, D., Di Giovenale, D., Di Palma, E., Di Pirro, G., Dodaro, A., Doria, A., Dosselli, U., Drago, A., Dupraz, K., Escribano, R., Esposito, A., Faccini, R., Ferrari, A., Filabozzi, A., Filippetto, D., Fiori, F., Frasciello, O., Fulgentini, L., Gallerano, G. P., Gallo, A., Gambaccini, M., Gatti, C., Gatti, G., Gauzzi, P., Ghigo, A., Ghiringhelli, G., Giannessi, L., Giardina, G., Giannini, C., Giorgianni, F., Giovenale, E., Giulietti, D., Gizzi, L., Guaraldo, C., Guazzoni, C., Gunnella, R., Hatada, K., Iannone, M., Ivashyn, S., Jegerlehner, F., Keeffe, P. O., Kluge, W., Kupsc, A., Labate, L., Levi Sandri, P., Lombardi, V., Londrillo, P., Loreti, S., Lorusso, Antonella, Losacco, M., Lukin, A., Lupi, S., Macchi, A., Magazù, S., Mandaglio, G., Marcelli, A., Margutti, G., Mariani, C., Mariani, P., Marzo, G., Masciovecchio, C., Masjuan, P., Mattioli, M., Mazzitelli, G., Merenkov, N. P., Michelato, P., Migliardo, F., Migliorati, M., Milardi, C., Milotti, E., Milton, S., Minicozzi, V., Mobilio, S., Morante, S., Moricciani, D., Mostacci, A., Muccifora, V., Murtas, F., Musumeci, P., Nguyen, F., Orecchini, A., Organtini, G., Ottaviani, P. L., Pace, C., Pace, E., Paci, M., Pagani, C., Pagnutti, S., Palmieri, V., Palumbo, L., Panaccione, G. C., Papadopoulos, C. F., Papi, M., Passera, M., Pasquini, L., Pedio, M., Perrone, Alessio, Petralia, A., Petrarca, M., Petrillo, C., Petrillo, V., Pierini, P., Pietropaolo, A., Pillon, M., Polosa, A. D., Pompili, R., Portoles, J., Prosperi, T., Quaresima, C., Quintieri, L., Rau, J. V., Reconditi, M., Ricci, A., Ricci, R., Ricciardi, G., Ricco, G., Ripani, M., Ripiccini, E., Romeo, S., Ronsivalle, C., Rosato, N., Rosenzweig, J. B., Rossi, A. A., Rossi, A. R., Rossi, F., Rossi, G., Russo, D., Sabatucci, A., Sabia, E., Sacchetti, F., Salducco, S., Sannibale, F., Sarri, G., Scopigno, T., Sekutowicz, J., Serafini, L., Sertore, D., Shekhovtsova, O., Spassovsky, I., Spadaro, T., Spataro, B., Spinozzi, F., Stecchi, A., Stellato, F., Surrenti, V., Tenore, A., Torre, A., Trentadue, L., Turchini, S., Vaccarezza, C., Vacchi, A., Valente, P., Venanzoni, G., Vescovi, S., Villa, F., Zanotti, G., Zema, N., Zobov, M., Zomer, F., Ferrario, M, Alesini, D, ., ., Mobilio, Settimio, M. Ferrario, D. Alesini, M. Alessandroni, M.P. Anania, S. Andrea, M. Angelone, A. Arcovito, F. Arnesano, M. Artioli, L. Avaldi, D. Babusci, A. Bacci, A. Balerna, S. Bartalucci, R. Bedogni, M. Bellaveglia, F. Bencivenga, M. Benfatto, S. Biedron, V. Bocci, M. Bolognesi, P. Bolognesi, R. Boni, R. Bonifacio, F. Boscherini, M. Boscolo, F. Bossi, F. Broggi, B. Buonomo, V. Calo, D. Catone, M. Capogni, M. Capone, K. Cassou, M. Castellano, A. Castoldi, L. Catani, G. Cavoto, N. Cherubini, G. Chirico, M. Cestelli-Guidi, E. Chiadroni, V. Chiarella, A. Cianchi, M. Cianci, R. Cimino, F. Ciocci, A. Clozza, M. Collini, G. Colo, A. Compagno, G. Contini, M. Coreno, R. Cucini, C. Curceanu, F. Curciarello, S. Dabagov, E. Dainese, I. Davoli, G. Dattoli, L. De Caro, P. De Felice, V. De Leo, S. Dell Agnello, S. Della Longa, G. Delle Monache, M. De Spirito, A. Di Cicco, C. Di Donato, D. Di Gioacchino, D. Di Giovenale, E. Di Palma, G. Di Pirro, A. Dodaro, A. Doria, U. Dosselli, A. Drago, K. Dupraz, R. Escribano, A. Esposito, R. Faccini, A. Ferrari, A. Filabozzi, D. Filippetto, F. Fiori, O. Frasciello, L. Fulgentini, G.P. Gallerano, A. Gallo, M. Gambaccini, C. Gatti, G. Gatti, P. Gauzzi, A. Ghigo, G. Ghiringhelli, L. Giannessi, G. Giardina, C. Giannini, F. Giorgianni, E. Giovenale, D. Giulietti, L. Gizzi, C. Guaraldo, C. Guazzoni, R. Gunnella, K. Hatada, M. Iannone, S. Ivashyn, F. Jegerlehner, P.O. Keeffe, W. Kluge, A. Kupsc, L. Labate, P. Levi Sandri, V. Lombardi, P. Londrillo, S. Loreti, A. Lorusso, M. Losacco, A. Lukin, S. Lupi, A. Macchi, S. Magazù, G. Mandaglio, A. Marcelli, G. Margutti, C. Mariani, P. Mariani, G. Marzo, C. Masciovecchio, P. Masjuan, M. Mattioli, G. Mazzitelli, N.P. Merenkov, P. Michelato, F. Migliardo, M. Migliorati, C. Milardi, E. Milotti, S. Milton, V. Minicozzi, S. Mobilio, S. Morante, D. Moricciani, A. Mostacci, V. Muccifora, F. Murta, P. Musumeci, F. Nguyen, A. Orecchini, G. Organtini, P.L. Ottaviani, C. Pace, E. Pace, M. Paci, C. Pagani, S. Pagnutti, V. Palmieri, L. Palumbo, G.C. Panaccione, C.F. Papadopoulo, M. Papi, M. Passera, L. Pasquini, M. Pedio, A. Perrone, A. Petralia, M. Petrarca, C. Petrillo, V. Petrillo, P. Pierini, A. Pietropaolo, M. Pillon, A.D. Polosa, R. Pompili, J. Portole, T. Prosperi, C. Quaresima, L. Quintieri, J.V. Rau, M. Reconditi, A. Ricci, R. Ricci, G. Ricciardi, G. Ricco, M. Ripani, E. Ripiccini, S. Romeo, C. Ronsivalle, N. Rosato, J.B. Rosenzweig, A.A. Rossi, A.R. Rossi, F. Rossi, G. Rossi, D. Russo, A. Sabatucci, E. Sabia, F. Sacchetti, S. Salducco, F. Sannibale, G. Sarri, T. Scopigno, J. Sekutowicz, L. Serafini, D. Sertore, O. Shekhovtsova, I. Spassovsky, T. Spadaro, B. Spataro, F. Spinozzi, A. Stecchi, F. Stellato, V. Surrenti, A. Tenore, A. Torre, L. Trentadue, S. Turchini, C. Vaccarezza, A. Vacchi, P. Valente, G. Venanzoni, S. Vescovi, F. Villa, G. Zanotti, N. Zema, M. Zobov, F. Zomer, M., Ferrario, D., Alesini, M., Alessandroni, M. P., Anania, S., Andrea, M., Angelone, A., Arcovito, F., Arnesano, M., Artioli, L., Avaldi, D., Babusci, A., Bacci, A., Balerna, S., Bartalucci, R., Bedogni, M., Bellaveglia, F., Bencivenga, M., Benfatto, S., Biedron, V., Bocci, M., Bolognesi, P., Bolognesi, R., Boni, R., Bonifacio, F., Boscherini, M., Boscolo, F., Bossi, F., Broggi, B., Buonomo, V., Calo, D., Catone, M., Capogni, M., Capone, K., Cassou, M., Castellano, A., Castoldi, L., Catani, G., Cavoto, N., Cherubini, G., Chirico, M., Cestelli Guidi, E., Chiadroni, V., Chiarella, A., Cianchi, M., Cianci, R., Cimino, F., Ciocci, A., Clozza, M., Collini, G., Colo, A., Compagno, G., Contini, M., Coreno, R., Cucini, C., Curceanu, F., Curciarello, S., Dabagov, E., Dainese, I., Davoli, G., Dattoli, L., De Caro, P., De Felice, V., De Leo, S., Dell Agnello, S., Della Longa, G., Delle Monache, M., De Spirito, A., Di Cicco, C., Di Donato, D., Di Gioacchino, D., Di Giovenale, E., Di Palma, G., Di Pirro, A., Dodaro, A., Doria, U., Dosselli, A., Drago, K., Dupraz, R., Escribano, A., Esposito, R., Faccini, A., Ferrari, A., Filabozzi, D., Filippetto, F., Fiori, O., Frasciello, L., Fulgentini, G. P., Gallerano, A., Gallo, M., Gambaccini, C., Gatti, G., Gatti, P., Gauzzi, A., Ghigo, G., Ghiringhelli, L., Giannessi, G., Giardina, C., Giannini, F., Giorgianni, E., Giovenale, D., Giulietti, L., Gizzi, C., Guaraldo, C., Guazzoni, R., Gunnella, K., Hatada, M., Iannone, S., Ivashyn, F., Jegerlehner, P. O., Keeffe, W., Kluge, A., Kupsc, L., Labate, P., Levi Sandri, V., Lombardi, P., Londrillo, S., Loreti, A., Lorusso, M., Losacco, A., Lukin, S., Lupi, A., Macchi, S., Magazù, G., Mandaglio, A., Marcelli, G., Margutti, C., Mariani, P., Mariani, G., Marzo, C., Masciovecchio, P., Masjuan, M., Mattioli, G., Mazzitelli, N. P., Merenkov, P., Michelato, F., Migliardo, M., Migliorati, C., Milardi, Milotti, Edoardo, S., Milton, V., Minicozzi, S., Mobilio, S., Morante, D., Moricciani, A., Mostacci, V., Muccifora, F., Murta, P., Musumeci, F., Nguyen, A., Orecchini, G., Organtini, P. L., Ottaviani, C., Pace, E., Pace, M., Paci, C., Pagani, S., Pagnutti, V., Palmieri, L., Palumbo, G. C., Panaccione, C. F., Papadopoulo, M., Papi, M., Passera, L., Pasquini, M., Pedio, A., Perrone, A., Petralia, M., Petrarca, C., Petrillo, V., Petrillo, P., Pierini, A., Pietropaolo, M., Pillon, A. D., Polosa, R., Pompili, J., Portole, T., Prosperi, C., Quaresima, L., Quintieri, J. V., Rau, M., Reconditi, A., Ricci, R., Ricci, G., Ricciardi, G., Ricco, M., Ripani, E., Ripiccini, S., Romeo, C., Ronsivalle, N., Rosato, J. B., Rosenzweig, A. A., Rossi, A. R., Rossi, F., Rossi, G., Rossi, D., Russo, A., Sabatucci, E., Sabia, F., Sacchetti, S., Salducco, F., Sannibale, G., Sarri, T., Scopigno, J., Sekutowicz, L., Serafini, D., Sertore, O., Shekhovtsova, I., Spassovsky, T., Spadaro, B., Spataro, F., Spinozzi, A., Stecchi, F., Stellato, V., Surrenti, A., Tenore, A., Torre, L., Trentadue, S., Turchini, C., Vaccarezza, A., Vacchi, P., Valente, G., Venanzoni, S., Vescovi, F., Villa, G., Zanotti, N., Zema, M., Zobov, and F., Zomer
Subjects: Nuclear and High Energy Physics, High energy, SC Linac, Neutron source, FEL, Compton source, Advanced accelerators concepts, Particle physics, Settore FIS/07 - FISICA APPLICATA (A BENI CULTURALI, AMBIENTALI, BIOLOGIA E MEDICINA), Advanced accelerators concept, Technical design, NO, Particle physic, Instrumentation, Physics, Settore FIS/01 - Fisica Sperimentale, Wide field, Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin), Dual (category theory), Free Electron Laser, Advanced accelerators concepts, Compton source, FEL, Neutron source, Particle physics, SC Linac, advanced accelerators concepts, particle physics, sc linac, compton source, fel, neutron source, free electron lasers, Systems engineering, Factory (object-oriented programming), Free electron laser
Abstract: This paper describes the scientific aims and potentials as well as the preliminary technical design of RUDE, an innovative tool for multi-disciplinary investigations in a wide field of scientific, technological and industrial applications. IRIDE will be a high intensity "particles factory", based on a combination of high duty cycle radio-frequency superconducting electron linacs and of high energy lasers. Conceived to provide unique research possibilities for particle physics, for condensed matter physics, chemistry and material science, for structural biology and industrial applications, IRIDE will open completely new research possibilities and advance our knowledge in many branches of science and technology. [RIDE is also supposed to be realized in subsequent stages of development depending on the assigned priorities. (C) 2013 Elsevier B.V. All rights reserved.
Published: 2014
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8. Status of the SPARC project

Author: S. Pagnutti, P. Emma, M. Preger, D. Alesini, C. De Martinis, Rodolfo Bonifacio, P.L. Ottaviani, James Rosenzweig, Luigi Palumbo, M. Quattromini, F. Tazzioli, R. Boni, Alessandro Cianchi, Adolfo Esposito, Simone Cialdi, Gian Piero Gallerano, V. Fusco, Pascal Salières, F. Sgamma, Massimo Ferrario, O. Tcherbakoff, L. Cultrera, R. Ricci, Andrea Doria, Ilario Boscolo, M. G. Castellano, Alessio Perrone, Dario Giove, Carlo Ligi, Luca Ficcadenti, G. Parisi, Alberto Clozza, Sven Reiche, P. Monchicourt, Pierre Breger, Angelo Stella, C. Schaerf, Daniele Pelliccia, Luca Giannessi, M. Sassi, A. Dipace, Vittoria Petrillo, M.E. Couprie, M. Bougeard, Marie Labat, G. Ronci, Andrea Mostacci, Alberto Renieri, A. Ghigo, Luigi Pellegrino, Guillaume Lambert, F. Ciocci, G. Di Pirro, Daniele Filippetto, Giuseppe Dattoli, L. Catani, Concetta Ronsivalle, Emilio Giovenale, C. Maroli, Enrica Chiadroni, Bruno Spataro, Hamed Merdji, Alessandro Flacco, Carlo Vicario, Luigi Picardi, G. Gatti, Amalia Torre, Francesco Flora, Mario Serio, Manuela Boscolo, Cristina Vaccarezza, Bertrand Carré, D. Garzella, E. Gabrielli, Alberto Bacci, Andrea Rossi, P. Musumeci, Elio Sabia, F. Broggi, Massimo Petrarca, A. Drago, Marco Bellaveglia, G. Messina, C. Sanelli, M. Rosetti, Fabrizio Castelli, E. Pace, F. Alessandria, Claudio Pellegrini, Alessandro Gallo, Luca Serafini, A. Zucchini, Mario Mattioli, S. Bertolucci, M. Vescovi, Mauro Migliorati, Agostino Marinelli, D., Alesini, S., Bertolucci, M. E., Biagini, C., Biscari, R., Boni, M., Boscolo, M., Castellano, A., Clozza, G., DI PIRRO, A., Drago, A., Esposito, M., Ferrario, V., Fusco, A., Gallo, A., Ghigo, S., Guiducci, M., Incurvati, C., Ligi, F., Marcellini, M., Migliorati, C., Milardi, 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, M., Zobov, F., Alessandria, A., Bacci, I., Boscolo, F., Broggi, S., Cialdi, C., Demartini, D., Giove, C., Maroli, M., Mauri, V., Petrillo, M., Rom, L., Serafini, Levi, Decio, M., Mattioli, G., Medici, L., Catani, E., Chiadroni, S., Tazzari, R., Bartolini, F., Ciocci, G., Dattoli, A., Doria, F., Flora, G. P., Gallerano, L., Giannessi, E., Giovenale, G., Messina, L., Mezi, P. L., Ottaviani, S., Pagnutti, L., Picardi, M., Quattromini, A., Renieri, C., Ronsivalle, A., Cianchi, A. D., Angelo, R., DI SALVO, A., Fantini, D., Moricciani, C., Schaerf, and J. B., Rosenzweig
Subjects: Physics, Nuclear and High Energy Physics, Brightness, SASE-FEL, high brightness electron beam, business.industry, Particle accelerator, Modular design, Undulator, Linear particle accelerator, Settore FIS/04 - Fisica Nucleare e Subnucleare, law.invention, non-linear resonant higher harmonics, Optics, photo-injector, law, Spark (mathematics), Radio frequency, Beam emittance, Aerospace engineering, business, Instrumentation
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 SPARK 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 SPARK 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.
Published: 2004
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9. Two Color FEL Driven by a Comb-like Electron Beam Distribution

Author: Riccardo Pompili, G. Gatti, Concetta Ronsivalle, Marco Bellaveglia, Luca Giannessi, G. Di Pirro, Pietro Musumeci, A. Petralia, M. Artioli, Enrica Chiadroni, Massimo Ferrario, Fabio Villa, Giuseppe Dattoli, D. Di Giovenale, Alberto Bacci, Cristina Vaccarezza, Maria Pia Anania, Alessandro Cianchi, Vittoria Petrillo, F. Ciocci, Andrea Rossi, Andrea Mostacci, and Luigi Palumbo
Subjects: Physics, Laser Comb, Distribution (number theory), 010308 nuclear & particles physics, business.industry, Free-Electron Laser, Velocity bunching, Settore FIS/01 - Fisica Sperimentale, Radiation, Physics and Astronomy(all), 01 natural sciences, Optics, 0103 physical sciences, Cathode ray, 010306 general physics, business
Abstract: We discuss a new method for the production of trains of FEL radiation pulses based on the FEL emission driven by a comb-like electron beam. In addition, we present recent experimental results on the two color FEL emission as generated at the SPARC_LAB facility: a train of two short (
Published: 2014
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10. Generation and characterization of ultra-short electron beams for single spike infrared FEL radiation at SPARC_LAB

Author: F. Ciocci, Vladimir Shpakov, D. Di Giovenale, Cristina Vaccarezza, M. Artioli, Andrea Rossi, Massimo Petrarca, Anna Giribono, Angelo Biagioni, Luca Giannessi, F. Massimo, Giuseppe Dattoli, Andrea Mostacci, Marco Bellaveglia, S. Romeo, Alberto Bacci, G. Di Pirro, M. Croia, Alessandro Cianchi, Vittoria Petrillo, Alessandro Curcio, Maria Pia Anania, Fabrizio Bisesto, E. Di Palma, J. Scifo, Riccardo Pompili, Giovanni Castorina, Stefano Pioli, Luca Piersanti, A. Petralia, Fabio Cardelli, Francesco Filippi, M. Carpanese, Massimo Ferrario, Fabio Villa, Enrica Chiadroni, Alberto Marocchino, and Alessandro Gallo
Subjects: Nuclear and High Energy Physics, Infrared, Electron, Radiation, 01 natural sciences, Optics, 0103 physical sciences, FEL, Single spike, Ultrashort, electron diagnostics, 010306 general physics, Instrumentation, FEL radiation, Physics, femtosecond bunch length, 010308 nuclear & particles physics, business.industry, Settore FIS/01 - Fisica Sperimentale, Undulator, Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin), Characterization (materials science), electron diagnostics, femtosecond bunch length, FEL radiation, Femtosecond, Cathode ray, Physics::Accelerator Physics, business
Abstract: The technique for producing and measuring few tens of femtosecond electron beams, and the consequent generation of few tens femtoseconds single spike FEL radiation pulses at SPARC_LAB is presented. The undulator has been used in the double role of radiation source and diagnostic tool for the characterization of the electron beam. The connection between the electron bunch length and the radiation bandwidth is analyzed.
Published: 2017

11. Seeded free electron laser operating with two colors: Comments on experimental results

Author: Giuseppe Dattoli, Amalia Torre, A. Petralia, M. Carpanese, Vittoria Petrillo, F. Ciocci, Petralia, A., Dattoli, G., Ciocci, F., and Carpanese, M.
Subjects: Free electron model, Physics, Nuclear and High Energy Physics, Physics and Astronomy (miscellaneous), business.industry, Free-electron laser, Surfaces and Interfaces, Laser, Integral equation, law.invention, Optics, Reliability (semiconductor), law, lcsh:QC770-798, Seeding, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, business, Phenomenology (particle physics)
Abstract: Free electron lasers operating with two colors are promising devices for applications. The relevant modelization has provided a good understanding of the underlying physics. In this paper we present an analysis of the experimental results obtained at SPARC-LAB concerning seeded two-colors free electron laser (FEL) operation. The use of an ad hoc developed semi-analytical model based on the small-signal FEL integral equation reproduces most of the observed phenomenology. The paper discusses the reliability of the proposed method, the range of validity and its possible improvement. © 2016, American Physical Society. All rights reserved.
Published: 2016
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12. Segmented undulator operation at the SPARC-FEL test facility

Author: Massimo Ferrario, Fabio Villa, Andrea Mostacci, Cristina Vaccarezza, Elio Sabia, Vittoria Petrillo, Maria Pia Anania, A. Petralia, Giampiero Di Pirro, Emanuele Di Palma, Domenico Di Giovenale, Marco Bellaveglia, Ivan Spassovsky, M. Artioli, Alessandro Cianchi, Vincenzo Surrenti, Riccardo Pompili, Giuseppe Dattoli, M. Carpanese, Enrica Chiadroni, F. Ciocci, Surrenti, V., Spassovsky, I., Sabia, E., Petralia, A., Di Palma, E., Dattoli, G., Carpanese, M., Artioli, M., and Ciocci, F.
Subjects: Magnetism, law.invention, SASE, FEL, Harmonic generation, Segmented undulator, SPARC, Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Applied Mathematics, Electrical and Electronic Engineering, Optics, law, Homogeneity (physics), Electronic, High harmonic generation, Optical and Magnetic Materials, Computer Science Applications1707 Computer Vision and Pattern Recognition, Physics, business.industry, Undulator, Laser, Magnetic field, Phase space, Cathode ray, Physics::Accelerator Physics, business
Abstract: A short period undulator (1.4 cm) has been designed for the SPARC-FEL test facility and has been realized in collaboration with KYMA Srl. It has been installed on the undulator line at SPARC. The undulator, operating in a delta like mode, has been used as radiator in a segmented configuration. The first stage being provided by the five undulators of the SPARC FEL source "old" chain, with period 2.8 cm. The KYMA undulator has a quatrefoil structure, a high magnetic field homogeneity and focuses both in vertical and radial directions. The two sections, namely the bunching and radiating parts, are arranged in such a way that the second is adjusted on a harmonic of the first. Laser action occurring in the second part, is due to the bunching acquired in the first. Simulations of the temporal and spectral profiles in different electron beam operating conditions are reported, as well as the evolution of the longitudinal phase space. The agreement with the experimental results is discussed The importance of this experiment is at least threefold: 1) It proves that the segmented undulator can successfully be operated 2) It proves that the laser emission in the last undulator is entirely due to the bunching mechanism, being no second harmonic signal present in the first segment 3) Encourages various improvements of the configuration itself, as e.g. the use of a further undulator with variable magnetic field configuration in order to obtain a laser field with adjustable polarization. © 2015 SPIE.
Published: 2015
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13. Conceptual design of a high-brightness linac for soft X-ray SASE-FEL source

Author: D. Alesini, N. Zema, Bruno Spataro, M. Quattromini, Luigi Palumbo, Giuseppe Dattoli, Concetta Ronsivalle, R. Di Salvo, Daniele Sertore, M. Incurvati, V. Rossi Albertini, F. Sgamma, D. Barni, C. Schaerf, A. Fantini, R. Ricci, F. Marcellini, F. Flora, Andrea Doria, A. Drago, R. Boni, Simone Cialdi, A. Stecchi, Manuela Boscolo, C. Quaresima, V. Fusco, D. Giove, C. DeMartinis, Luigi Picardi, P.L. Ottaviani, M. Preger, Mario Mattioli, Giorgio Bellomo, Vittoria Petrillo, F. Broggi, Adolfo Esposito, M.E. Biagini, A. D'Angelo, Carlo Pagani, Luca Serafini, Carlo Vicario, F. Ciocci, Ilario Boscolo, Cristina Vaccarezza, C. Biscari, G. Medici, Decio Levi, M. Bonardi, Paolo Pierini, C. Maroli, Gian Piero Gallerano, E. Acerbi, Alberto Clozza, C. Birattari, F. Tazzioli, Susanna Guiducci, C. Milardi, L. Avaldi, P. Michelato, R. Bartolini, A. Ghigo, L. Catani, Mario Serio, Tommaso Prosperi, Alessandro Cianchi, P. Raimondi, P. Laurelli, Carlo Ligi, Alessandro Gallo, Massimo Ferrario, P. Perfetti, Luigi Pellegrino, D. Moricciani, M. G. Castellano, Giovanni Volpini, S. Bertolucci, G.S. Petrarca, Luca Giannessi, E. Chiadroni, Mikhail Zobov, Giuseppe Felici, Mauro Migliorati, G. Di Pirro, L. Monaco, Augusto Pifferi, G. Messina, Emilio Giovenale, C. Sanelli, Antonio Cricenti, Luca Mezi, A. Stella, M. Vescovi, Alberto Renieri, M. Mastrucci, Carmelita Carbone, Angelo Bosotti, and F. Alessandria
Subjects: Physics, Nuclear and High Energy Physics, Soft x ray, Brightness, high-brightness beams, Photoinjector, Linear particle accelerator, soft X-ray FEL, Settore FIS/04 - Fisica Nucleare e Subnucleare, Research plan, Conceptual design, Systems engineering, Instrumentation
Abstract: FELs based on SASE are believed to be powerful tools to explore the frontiers of basic sciences, from physics to chemistry to biology. Intense R&D programs have started in the USA and Europe in order to understand the SASE physics and to prove the feasibility of these sources. The allocation of considerable resources in the Italian National Research Plan (PNR) brought about the formation of a CNR–ENEA–INFN–University of Roma “Tor Vergata” study group. A conceptual design study has been developed and possible schemes for linac sources have been investigated, leading to the SPARX proposal. We report in this paper the results of a preliminary start to end simulation concerning one option we are considering based on an S-band normal conducting linac with high-brightness photoinjector integrated in an RF compressor.
Published: 2003
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14. Two-Color Radiation Generated in a Seeded Free-Electron Laser with Two Electron Beams

Author: Enrica Chiadroni, M. Carpanese, M. Artioli, Massimo Ferrario, D. Di Giovenale, A. Petralia, Fabio Villa, Marco Bellaveglia, E. Di Palma, Luca Innocenti, Andrea Rossi, Maria Pia Anania, Concetta Ronsivalle, F. Ciocci, Giuseppe Dattoli, Julietta V. Rau, Riccardo Pompili, Cristina Vaccarezza, Vladimir Shpakov, Andrea Mostacci, Alberto Bacci, Luca Giannessi, Alessandro Cianchi, G. Di Pirro, Elio Sabia, Vittoria Petrillo, Petralia A., Anania M.P., Artioli M., Bacci A., Bellaveglia M., Carpanese M., Chiadroni E., Cianchi A., Ciocci F., Dattoli G., Di Giovenale D., Di Palma E., Di Pirro G.P., Ferrario M., Giannessi L., Innocenti L., Mostacci A., Petrillo V., Pompili R., Rau J.V., Ronsivalle C., Rossi A.R., Sabia E., Shpakov V., Vaccarezza C., Villa F., Sabia, E., Ronsivalle, C., Giannessi, L., Di Palma, E., Dattoli, G., Ciocci, F., Carpanese, M., Artioli, M., and Petralia, A
Subjects: General Physics and Astronomy, Color, Electrons, Electron, seeding FEL, Radiation, 01 natural sciences, law.invention, Physics and Astronomy (all), Optics, Color, Computer Simulation, Image Processing, Computer-Assisted, Spectrum Analysis, Electrons, Lasers, law, Frequency separation, 0103 physical sciences, Electron beams, free electron lasers, physics, Image Processing, Computer-Assisted, Spontaneous emission, Computer Simulation, 010306 general physics, Physics, FEL, 010308 nuclear & particles physics, business.industry, Lasers, Spectrum Analysis, Settore FIS/01 - Fisica Sperimentale, Free-electron laser, SPARC, Laser, FEL, seeding FEL, lasers, Free Electron Laser, Cathode ray, business, Seeded FEL, Coherence (physics)
Abstract: We present the experimental evidence of the generation of coherent and statistically stable two-color free-electron laser radiation obtained by seeding an electron beam double peaked in energy with a laser pulse single spiked in frequency. The radiation presents two neat spectral lines, with time delay, frequency separation, and relative intensity that can be accurately controlled. The analysis of the emitted radiation shows a temporal coherence and a shot-to-shot regularity in frequency significantly enhanced with respect to the self-amplified spontaneous emission. © 2015 American Physical Society. © 2015 American Physical Society.
Published: 2015
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15. Seeded FEL with two energy level electron beam distribution at SPARC-lab

Author: Julietta V. Rau, Elio Sabia, A. Petralia, Vladimir Shpakov, M. G. Castellano, Giancarlo Gatti, Vittoria Petrillo, F. Ciocci, Alessandro Gallo, Luca Giannessi, Marco Bellaveglia, Andrea Mostacci, M. Carpanese, Enrica Chiadroni, Alessandro Cianchi, Maria Pia Anania, David Alesini, S. Romeo, Alberto Bacci, Massimo Ferrario, Ivan Spassovsky, Riccardo Pompili, Anna Giribono, F. Filippi, M. Artioli, Emanuele Di Palma, Cristina Vaccarezza, Fabio Villa, Domenico Di Giovenale, Giampiero Di Pirro, Giuseppe Dattoli, N. S. Mirian, Luca Innocenti, Andrea Rossi, Spassovsky, I. P., Sabia, E., Petralia, A., Giannessi, L., Di Palma, E., Dattoli, G., Ciocci, F., Carpanese, M., and Artioli, M.
Subjects: Amplified spontaneous emission, Seeded, Electron, Radiation, Spectral line, law.invention, Optics, law, Electronic, FEL, Two color, Applied Mathematics, Computer Science Applications1707 Computer Vision and Pattern Recognition, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Optical and Magnetic Materials, Physics, business.industry, Free-electron laser, Laser, Cathode ray, Physics::Accelerator Physics, Atomic physics, business, Coherence (physics)
Abstract: We present the experimental evidence of the generation of coherent and statistically stable Free-Electron Laser (FEL) two color radiation obtained by seeding an electron double peaked beam in time and energy with a single peaked laser pulse. The FEL radiation presents two neat spectral lines, with time delay, frequency separation and relative intensity that can be accurately controlled. The analysis of the emission shows a temporal coherence and regularity in frequency significantly enhanced with respect to the Self Amplified Spontaneous Emission (SASE). © 2015 SPIE.
Published: 2015

16. Mapping the transverse coherence of the self amplified spontaneous emission of a free-electron laser with the heterodyne speckle method

Author: Enrica Chiadroni, Marcello Quattormini, Giuseppe Dattoli, Amalia Torre, Vittoria Petrillo, Riccardo Pompili, Bruno Paroli, Julietta V. Rau, Vincenzo Surrenti, Luca Giannessi, Marco A. C. Potenza, M. Artioli, Alberto Bacci, Daniele Redoglio, Giampierro Di Pirro, Giancarlo Gatti, Andrea Mostacci, Marco Bellaveglia, Massimo Ferrario, A. Petralia, Luca Serafini, Fabio Villa, M. D. Alaimo, Michele Manfredda, Andrea Rossi, F. Ciocci, Roberta Martucci, Alessandro Cianchi, Maria Pia Anania, Cristina Vaccarezza, Villa, F., Torre, A., Surrenti, V., Quattormini, M., Petralia, A., Giannessi, L., Dattoli, G., and Ciocci, F.
Subjects: Heterodyne, Amplified spontaneous emission, Optics and Photonics, Physics::Optics, Electrons, law.invention, Speckle pattern, Optics, law, Computer Simulation, Physics, Amplifiers, Electronic, business.industry, Lasers, Settore FIS/01 - Fisica Sperimentale, Free-electron laser, Undulator, Models, Theoretical, Laser, coherence, speckle, Atomic and Molecular Physics, and Optics, coherence, Thermodynamics, Optical radiation, speckle, business, Coherence (physics)
Abstract: The two-dimensional single shot transverse coherence of the Self-Amplified Spontaneous Emission of the SPARC-LAB Free-Electron Laser was measured through the statistical analysis of a speckle field produced by heterodyning the radiation beam with a huge number of reference waves, scattered by a suspension of particles. In this paper we report the measurements and the evaluation of the transverse coherence along the SPARC-LAB undulator modules. The measure method was demonstrated to be precise and robust, it does not require any a priori assumptions and can be implemented over a wide range of wavelengths, from the optical radiation to the x-rays.
Published: 2014
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17. Two color experiments at SPARC: external and intra-bunch seeding

Author: D. Alesini, M.P. Anania, M. Bellaveglia, M. Castellano, E. Chiadroni, D. Di Giovenale, G. Di Pirro, M. Ferrario, A. Gallo, G. Gatti, R. Pompili, S. Romeo, V. Shpakov, C. Vaccarezza, F. Villa, M. Carpanese, F. Ciocci, G. Dattoli, E. Di Palma, L. Giannessi, A. Petralia, E. Sabia, I.P. Spassovsky, M. Artioli, A. Cianchi, F. Filippi, A. Giribono, J.V. Rau, A. Bacci, A.R. Rossi, A. Mostacci, N.S. Mirian, V. Petrillo, and L. Innocenti.
Subjects: Physics::Accelerator Physics
Abstract: The FEL-SPARC operation with two bunches at different energies has been characterized using different tools. The effect of the e-beam matching on the SASE operation has been explored by controlling the transport with an ad hoc developed control system, allowing either the transport in matching conditions and in different configurations. Since the two bunches have, at the entrance of the undulator, different phase space characteristics we used this effect as a knob to enhance or suppress one or the other FEL mode. We investigated the effect of seeding on both frequencies and observed beating waves, furthermore we observed effects of intra-bunch seeding when only one of the modes is seeded.
Published: 2014

18. The ENEA CARM source for nuclear fusion: Project status and perspectives

Author: A. A. Tuccillo, F. Ciocci, L. Amicucci, Francesco Mirizzi, Alessandro Bruschi, G. L. Ravera, P. Buratti, Pietro Zito, Alessandro Lampasi, Elio Sabia, Silvio Ceccuzzi, Gian Piero Gallerano, G. Maffia, Andrea Doria, Saul Garavaglia, D. DeMeis, Giuseppe Dattoli, Luca Mezi, F. Causa, A. Petralia, Ivan Spassovsky, E. Di Palma, M. Carpanese, Emilio Giovenale, Tuccillo, A., Spassovsky, I., Sabia, E., Ravera, G., Petralia, A., Mezi, L., Maffia, G., Lampasi, A., Giovenale, E., Gallerano, G. P., Doria, A., Di Palma, E., Demeis, D., Dattoli, G., Ciocci, F., Ceccuzzi, S., Causa, F., Carpanese, M., Buratti, P., and Amicucci, L.
Subjects: Physics, Nuclear physics, Tokamak, Physics::Plasma Physics, law, Harmonics, Cyclotron, Magnetic confinement fusion, Nuclear fusion, Plasma, Maser, law.invention, Magnetic field
Abstract: A Cyclotron Auto-Resonance Maser (CARM) is under study at the ENEA Research Laboratories in Frascati as a electron cyclotron heating (ECH) source in plasma magnetic confinement devices like Tokamaks. The aim of the project is the realization of a test source at 250 GHz to verify heating mechanisms in high magnetic field Tokamaks and at the second harmonics ECH frequencies for which a higher energy exchange efficiency has been predicted.
Published: 2014

19. Large-bandwidth two-color free-electron laser driven by a comb-like electron beam

Author: F. Ciocci, Pietro Musumeci, Luca Giannessi, G. Gatti, G. Di Pirro, A. Petralia, Enrica Chiadroni, Giuseppe Dattoli, Cristina Vaccarezza, Massimo Ferrario, Vittoria Petrillo, Andrea Rossi, Concetta Ronsivalle, Riccardo Pompili, Julietta V. Rau, Alberto Bacci, Fabio Villa, Alessandro Cianchi, D. Di Giovenale, Maria Pia Anania, Andrea Mostacci, Luigi Palumbo, Marco Bellaveglia, Petralia, A., Giannessi, L., Dattoli, G., Ciocci, F., and Ronsivalle, C.
Subjects: high brightness electron beams, General Physics and Astronomy, Electron, velocity bunching, Radiation, Linear particle accelerator, law.invention, bunch train, two-color radiation, freeelectron laser, free-electron laser, Optics, law, Physics, high brightness electron beam, business.industry, Amplifier, Settore FIS/01 - Fisica Sperimentale, Free-electron laser, Laser, Bunches, Cathode ray, Physics::Accelerator Physics, high brightness electron beams, bunch train, velocity bunching, freeelectron laser, two-color radiation, business
Abstract: We discuss a two-color SASE free-electron laser (FEL) amplifier where the time and energy separation of two separated radiation pulses are controlled by manipulation of the electron beam phase space. Two electron beamlets with adjustable time and energy spacing are generated in an RF photo-injector illuminating the cathode with a comb-like laser pulse followed by RF compression in the linear accelerator. We review the electron beam manipulation technique to generate bunches with time and energy properties suitable for driving two-color FEL radiation. Experimental measurements at the SPARC-LAB facility illustrate the flexibility of the scheme for the generation of two-color FEL spectra. © 2014 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Published: 2014
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20. Self-consistent three-dimensional RF-gun dynamics integration based on the Lienard-Wiechert retarded potentials

Author: Luca Giannessi, Luca Mezi, A Marranca, M. Quattromini, and F. Ciocci
Subjects: Physics, Nuclear and High Energy Physics, Dynamics (mechanics), Retarded potential, Physics::Accelerator Physics, CPU time, Thermal emittance, Self consistent, Key issues, Instrumentation, Beam (structure), Computational physics, Electron gun
Abstract: In this contribution we will consider some key issues in the design of a three-dimensional (3D) code devoted to the simulation of charged beam transport in RF photoinjectors. The inclusion of space-charge fields is obtained by means of the Lienard-Wiechert retarded potentials. This technique represents an alternative to the self-consistent algorithm of the particles in cells type (PIC) which is extremely expensive in terms of CPU time and memory requirements. We present some preliminary results on the emittance growth induced by off-axis beam injection.
Published: 1997
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21. Compton backscattering induced by FEL photons: A general treatment

Author: M. Quattromini, Luca Giannessi, F. Ciocci, Giuseppe Dattoli, P.L. Ottaviani, and M. Carpanese
Subjects: Physics, Nuclear and High Energy Physics, High-gain antenna, Photon, General method, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Compton scattering, Physics::Optics, Photon energy, Compton backscattering, Photon yield, Linear particle accelerator, Nuclear physics, Optics, Physics::Accelerator Physics, business, Instrumentation
Abstract: We discuss a general method of analysis for the Compton backscattering of FEL intracavity photons. We present general formulae for the photon yield both for linac-based and recirculated FELs. We also discuss Compton backscattering of X-ray FEL photons produced by high gain device and analyze the possibility of realizing a γ-ray facility with photon energy ranging from 70 to 800 MeV.
Published: 1997
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22. Compton backscattering of free-electron laser photons and generation of high-energy monochromatic photon fluxes

Author: F. Ciocci, Luca Giannessi, P.L. Ottaviani, and Giuseppe Dattoli
Subjects: Physics, Photon, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Free-electron laser, Compton scattering, Computer Science::Software Engineering, Condensed Matter Physics, Laser, Atomic and Molecular Physics, and Optics, Light scattering, Linear particle accelerator, law.invention, Nonlinear Sciences::Adaptation and Self-Organizing Systems, law, Monochromatic color, Electrical and Electronic Engineering, Atomic physics
Abstract: The possibility of realizing a high-energy /spl gamma/-ray beam by using the Compton backscattering of X-ray free-electron laser photons is discussed. It is shown that the present status of technology offers the possibility of obtaining quasi-monochromatic beams (/spl Delta/E/sub /spl gamma///E/sub /spl gamma///spl sim/1%) with energy ranging up to 5 GeV and with a counting rate larger than 10/sup 6/ photons per second.
Published: 1997
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23. Two color free-electron laser and frequency beating

Author: A. Petralia, P.L. Ottaviani, Massimo Ferrario, Fabio Villa, Elio Sabia, Giuseppe Dattoli, F. Ciocci, Vittoria Petrillo, S. Pagnutti, Sabia, E., Pagnutti, S., Dattoli, G., and Ciocci, F.
Subjects: Physics, High-gain antenna, Optics, Feature (computer vision), business.industry, law, Free-electron laser, General Physics and Astronomy, business, Laser, Integral equation, law.invention
Abstract: We review the theory of two color high gain free-electron laser emission, derive the integral equation characterizing the evolution of the optical intensities, and provide a description of the relevant dynamics. The characteristic feature of this regime is the existence of a mutual bunching, whose origin and role are discussed. © 2013 American Physical Society.
Published: 2013

24. Design considerations on a high-power VUV FEL

Author: Giuseppe Dattoli, Amalia Torre, B. Faatz, P.L. Ottaviani, A. De Angelis, Luca Giannessi, F. Ciocci, and F. Garosi
Subjects: Physics, business.industry, Amplifier, Resonance, Undulator, Condensed Matter Physics, Laser, Signal, Atomic and Molecular Physics, and Optics, Linear particle accelerator, law.invention, Optics, law, Physics::Accelerator Physics, Electrical and Electronic Engineering, business, Pulse-width modulation, Beam (structure)
Abstract: We explore the feasibility conditions of a high-power EEL operating in the VUV region (below 100 nm) and exploiting a coupled oscillator triplicator configuration. A high quality beam from a linac is passed through a EEL oscillator and produces laser radiation at 240 nm. The same beam is extracted and then injected into a second undulator tuned at the third harmonic of the first. The bunching produced in the oscillator allows the start up of the laser signal in the second section which operates as an amplifier. We discuss the dynamical behavior of the system and the dependence of the output power on the characteristics of the e-beam and of the oscillator. The possibility of enhancing the output power, adding a tapered section to the second undulator, is finally analyzed. >
Published: 1995
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25. The effect of emittance inhomogeneous broadening on the brightness of a magnetic undulator

Author: F. Ciocci, Giuseppe Dattoli, and Amalia Torre
Subjects: Quantum optics, Physics, Brightness, Electromagnet, business.industry, Undulator, Condensed Matter Physics, Laser, Atomic and Molecular Physics, and Optics, law.invention, Magnetic field, Optics, law, Physics::Accelerator Physics, Thermal emittance, Electrical and Electronic Engineering, Beam emittance, business
Abstract: In this paper we discuss the degradation of the undulator brightness induced by the spatial and angular distributions of the e-beam. The obtained results are general in the sense that they hold regardless of any matching condition. The relevance of the analysis to free-electron laser dynamics is also commented upon. >
Published: 1994
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26. Inhomogeneous broadening effects in a waveguide free-electron laser

Author: Giuseppe Dattoli, F. Ciocci, Luca Giannessi, and Amalia Torre
Subjects: Physics, Brightness, business.industry, Free-electron laser, Condensed Matter Physics, Laser, Electromagnetic radiation, Atomic and Molecular Physics, and Optics, law.invention, Optics, law, Physics::Accelerator Physics, Emission spectrum, Electrical and Electronic Engineering, Homogeneous broadening, business, Waveguide, Line (formation)
Abstract: We explore the brightness and gain degradation induced by the beam energy spread in a waveguide free-electron laser (FEL). We discuss the physical mechanism underlying the line broadening and gain reduction effects, and make a comparison with the free-space case. >
Published: 1994
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27. High-Gain Harmonic-Generation Free-Electron Laser Seeded by Harmonics Generated in Gas

Author: Ivan Spassovsky, Bertrand Carré, Vincenzo Surrenti, Marie Labat, Alessandro Gallo, Enrica Chiadroni, Luca Cultrera, M. Del Franco, Vittoria Petrillo, Cristina Vaccarezza, M. Bougeard, Guillaume Lambert, Alessandro Cianchi, M. Ferrario, Andrea Mostacci, Julietta V. Rau, M. Serluca, Luca Poletto, Giancarlo Gatti, Marco Bellaveglia, M. Quattromini, F. Ciocci, Daniele Filippetto, Fabio Frassetto, D. Garzella, A. Petralia, Carlo Vicario, M. E. Couprie, Luca Giannessi, G. Di Pirro, Elio Sabia, A. Drago, Concetta Ronsivalle, Italian National agency for new technologies, Energy and sustainable economic development [Frascati] (ENEA), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Laboratori Nazionali di Frascati (LNF), Istituto Nazionale di Fisica Nucleare (INFN), Service de Physique et de Chimie des Surfaces et Interfaces (SPCSI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tor Vergata (INFN, Sezione di Roma Tor Vergata), CNR Istituto di Fotonica e Nanotecnologie [Padova] (IFN), Consiglio Nazionale delle Ricerche [Roma] (CNR), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], ENEA C.R. Frascati, Via E. Fermi, 45, 00044 Frascati, Roma, Italy, affiliation inconnue, Università degli Studi di Milano [Milano] (UNIMI), INFN-Mi, Via Celoria, 16 20133 Milano, Italy, Istituto di Struttura della Materia (CNR-ISM), Paul Scherrer Institute (PSI), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), and Università degli Studi di Milano = University of Milan (UNIMI)
Subjects: Physics::Optics, General Physics and Astronomy, high order harmonics, 01 natural sciences, 7. Clean energy, law.invention, Optics, law, 0103 physical sciences, High harmonic generation, 010306 general physics, Physics, FEL, high order harmonics, FEL, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], 010308 nuclear & particles physics, business.industry, Amplifier, Settore FIS/01 - Fisica Sperimentale, Free-electron laser, Laser, Wavelength, Harmonics, Sapphire, Optoelectronics, business, Coherence (physics)
Abstract: International audience; The injection of a seed in a free-electron laser (FEL) amplifier reduces the saturation length and improves the longitudinal coherence. A cascaded FEL, operating in the high-gain harmonic-generation regime, allows us to extend the beneficial effects of the seed to shorter wavelengths. We report on the first operation of a high-gain harmonic-generation free-electron laser, seeded with harmonics generated in gas. The third harmonics of a Ti:sapphire laser, generated in a gas cell, has been amplified and up-converted to its second harmonic (?rad=133nm) in a FEL cascaded configuration based on a variable number of modulators and radiators. We studied the transition between coherent harmonic generation and superradiant regime, optimizing the laser performances with respect to the number of modulators and radiators. © 2011 American Physical Society.
Published: 2011
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28. Seeding experiments with harmonics in gas at SPARC

Author: M. Labat, L. Giannessi, A. Petralia, G. Dattoli, F. Ciocci, M. Del Franco, M. Quattromini, C. Ronsivalle, E. Sabia, I. Spassovsky, V. Surrenti, D. Filippetto, G. Di Pirro, G. Gatti, M. Bellaveglia, D. Alesini, M. Castellano, E. Chiadroni, L. Cultrera, M. Ferrario, L. Ficcadenti, A. Gallo, A. Ghigo, E. Pace, B. Spataro, C. Vaccarezza, A. Bacci, V. Petrillo, A.R. Rossi, L. Serafini, M. Serluca, M. Moreno, L. Poletto, F. Frassetto, V. Rossi Albertini, J.V. Rau, A. Cianchi, A. Mostacci, M. Migliorati, L. Palumbo, G. Marcus, P. Musumeci, J. Rosenzweig, F. Briquez, M. E. Couprie, B. Carré, M. Bougeard, D. Garzella, G. Lambert, and C. Vicario
Published: 2011

29. Ultrashort Single Spike Pulse Generation at the SPARC Test Facility

Author: D. FIlippetto, L. Giannessi, A. Petralia, G. Dattoli, F. Ciocci, M. Del Franco, M. Quattromini, C. Ronsivalle, E. Sabia, I. Spassovsky, V. Surrenti, D. Filippetto, G. Di Pirro, G. Gatti, M. Bellaveglia, D. Alesini, M. Castellano, E. Chiadroni, L. Cultrera, M. Ferrario, L. Ficcadenti, A. Gallo, A, Ghigo, E. Pace, B. Spataro, C. Vaccarezza, A. Bacci, V. Petrillo, A.R. Rossi, L. Serafini, M. Serluca, M. Moreno, L. Poletto, F. Frassetto, V. Rossi Albertini, J.V. Rau, A. Cianchi, M. Labat, A.Mostacci, M Migliorati, L. Palumbo, G. Marcus, P. Musumeci, J.Rosenzweig, F. Briquez, M. E. Couprie, B. Carré, M.Bougeard, D. Garzella, G. Lambert, and C.Vicario
Published: 2011

30. Self-Amplified Spontaneous Emission Free-Electron Laser with an Energy-Chirped Electron Beam and Undulator Tapering

Author: F. Ciocci, Daniele Filippetto, J. B. Rosenzweig, Emanuele Pace, Andrea Rossi, M. Quattromini, M. Moreno, Carlo Vicario, Alessandro Gallo, G. Di Pirro, V. Rossi Albertini, Elio Sabia, M. Castellano, Giuseppe Dattoli, Cristina Vaccarezza, Luca Poletto, Julietta V. Rau, M. E. Couprie, Ivan Spassovsky, M. Ferrario, Giancarlo Gatti, Vincenzo Surrenti, Marie Labat, Fabio Frassetto, Marco Bellaveglia, Simone Spampinati, Alessandro Cianchi, M. Del Franco, Gabriel Marcus, A. Petralia, M. Serluca, Concetta Ronsivalle, Alberto Bacci, Luca Cultrera, Luca Giannessi, Fabien Briquez, Andrea Mostacci, Enrica Chiadroni, Vittoria Petrillo, Bruno Spataro, and Luca Ficcadenti
Subjects: Physics, business.industry, free electron laser, SASE, Settore FIS/01 - Fisica Sperimentale, Free-electron laser, Self-amplified spontaneous emission, General Physics and Astronomy, Tapering, Undulator, Laser, law.invention, Optics, free-electron laser, law, Cathode ray, Chirp, Spontaneous emission, business
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.
Published: 2011
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31. Design elements of a high-power VUV free electron laser

Author: Giuseppe Dattoli, Luca Giannessi, A. De Angelis, P.L. Ottaviani, Amalia Torre, F. Ciocci, and F. Garosi
Subjects: Physics, Optics, business.industry, Free-electron laser, Physics::Accelerator Physics, Design elements and principles, Tapering, Undulator, Atomic physics, business, Power (physics)
Abstract: We explore the feasibility of a high-power FEL operating in the VUV and configured as a coupled oscillator-tripler. The dynamical behaviour of the system and the dependence of the output power on the characteristics of the e-beam are analysed along with the parameters of the oscillator. Finally, the possibility of enhancing the output power by means of appropriate tapering of the second undulator is discussed.
Published: 1993
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32. Analysis of the optical-klystron gain depression induced by inhomogeneous broadening effects

Author: F. Ciocci, Amalia Torre, Luca Giannessi, and Giuseppe Dattoli
Subjects: Physics, High-gain antenna, Klystron, business.industry, Low gain, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, Optics, law, Physics::Accelerator Physics, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, business, Energy (signal processing)
Abstract: The modification induced in the Optical-Klystron gain by an e-beam with non-negligible energy spread and emittances is analyzed. The analysis is carried out including the inhomogeneous broadening contributions due to the undulators and dispersive parts. The paper deals essentially with the low gain regime, the corrections due to the high gain effects are also discussed.
Published: 1993
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33. Status of the commissioning of LISA for the SURF FEL experiment

Author: Gian Piero Gallerano, M. G. Castellano, Luca Giannessi, Massimo Ferrario, F. Cevenini, P. Patteri, F. Tazzioli, F. Ciocci, Giuseppe Dattoli, Amalia Torre, L. Catani, M. Minestrini, Elio Sabia, A. Dipace, N. Cavallo, and Alberto Renieri
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, law, Cryogenic system, Astrophysics::Instrumentation and Methods for Astrophysics, Physics::Accelerator Physics, Spontaneous emission, Injector, Instrumentation, Linear particle accelerator, law.invention
Abstract: The status of the commissioning of the 25 MeV superconducting (SC) linac LISA is reported. Some crucial steps toward routine operation of the 1 MeV injector and the cryogenic system have been done. The problems related to the diagnostic setup for spontaneous emission measurement and cavity alignment are also presented.
Published: 1993
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34. Operation of a compact free-electron laser in the millimeter-wave region with a bunched electron beam

Author: Emilio Giovenale, R. Bartolini, Alberto Renieri, Gian Piero Gallerano, M. F. Kimmitt, F. Ciocci, G. Messina, and Andrea Doria
Subjects: Physics, Waveguide (electromagnetism), business.industry, Free-electron laser, Physics::Optics, General Physics and Astronomy, Radiation, Laser, law.invention, Wavelength, Optics, law, Extremely high frequency, Cathode ray, Physics::Accelerator Physics, business, Microtron
Abstract: The waveguide operation of a compact free-electron laser driven by a 2.3-MeV S-band microtron is reported. Power up to 1 kW in 4-\ensuremath{\mu}s pulses has been generated at wavelengths in the range between 2.1 and 2.6 mm. Novel tuning features and temporal characteristics of the emitted radiation, related to the bunched nature of the electron beam and to the dispersive effect of the waveguide, have been observed.
Published: 1993
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35. FEL experiments at SPARC: operation in seeded and chirped mode

Author: L. Giannessi, A. Petralia, G. Dattoli, F. Ciocci, M. Del Franco, M. Quattromini, C. Ronsivalle, E. Sabia, I. Spassovsky, V. Surrenti, D. Filippetto, G. Di Pirro, G. Gatti, M. Bellaveglia, D. Alesini, M. Castellano, E. Chiadroni, L. Cultrera, M. Ferrario, L. Ficcadenti, A. Gallo, A, Ghigo, E. Pace, B. Spataro, C. Vaccarezza, A. Bacci, V. Petrillo, A.R. Rossi, L. Serafini, M. Serluca, M. Moreno, L. Poletto, F. Frassetto, J.V. Rau, V. Rossi Albertini, A. Cianchi, Mostacci, M Migliorati, L. Palumbo, Un. Roma La Sapienza, IT. G. Marcus, P. Musumeci, J. Rosenzweig, S. Spampinati, M. Labat, F. Briquez, M. E. Couprie, B. Carré, M. Bougeard, D. Garzella, G. Lambert, and C.Vicario
Published: 2010

36. Effect of electron beam energy distribution on the wiggler-undulator brightness

Author: F. Ciocci and Giuseppe Dattoli
Subjects: Physics, Nuclear and High Energy Physics, Brightness, Series (mathematics), business.industry, Wiggler, Free-electron laser, Undulator, Radiation flux, Optics, Cathode ray, Physics::Accelerator Physics, Laser beam quality, business, Instrumentation
Abstract: We explore the effect of the e-beam energy distribution on the wiggler-undulator brightness. We show that a powerful tool of analysis is the expansion of a given distribution in series of Gaussians. The convenience of the method both for analytical and numerical purposes is stressed. We discuss two specific examples one of which being the brightness of the recently proposed two frequency undulator. The relevance of the analysis is also discussed within the framework of free electron laser physics.
Published: 1992
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37. Optical properties of helical undulators

Author: F. Ciocci, G. Dattoli, A. Torre, Luca Giannessi, and C. Mari
Subjects: Physics, Nuclear and High Energy Physics, business.industry, Solenoid, Undulator, Optics, Quadrupole, Cathode ray, Physics::Accelerator Physics, Thermal emittance, Atomic physics, business, Instrumentation, Beam (structure)
Abstract: The helical undulator is an optical element which behaves like a quadrupole (focusing an electron beam both in radial and vertical directions) and like a solenoid. In this paper we explore more deeply the optical properties of such a device and discuss problems like emittance nonconservation due to the interaction of the beam with the helical undulator.
Published: 1992
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38. Status report of the IR FEL project on the superconducting linac LISA at LNF-Frascati

Author: A. Ghigo, F. Cevenini, M. G. Castellano, P. Patteri, Gian Piero Gallerano, Giuseppe Dattoli, F. Tazzioli, Marilisa De Serio, Amalia Torre, F. Ciocci, N. Cavallo, Elio Sabia, Alberto Renieri, Claudio Sanelli, and A. Dipace
Subjects: Physics, Superconductivity, Nuclear physics, Nuclear and High Energy Physics, medicine.medical_specialty, law, Optical cavity, medicine, Medical physics, Status report, Instrumentation, Linear particle accelerator, law.invention
Abstract: We report the progress of the superconducting linac LISA at LNF (Frascati National Laboratories) and the status of the FEL experiment. The design of the optical cavity is presented.
Published: 1991
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39. Recent results on the Cherenkov FEL at the ENEA submillimeter FEL facility

Author: G. Messina, Alberto Renieri, J.E. Walsh, Andrea Doria, F. Ciocci, Gian Piero Gallerano, and M. F. Kimmitt
Subjects: Physics, Nuclear and High Energy Physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Physics::Optics, Dielectric, Wavelength, Optics, Physics::Accelerator Physics, Optoelectronics, Radio frequency, business, Instrumentation, Microtron, Cherenkov radiation
Abstract: We report the observation of coherent emission from a Cherenkov FEL driven by a 5 MeV radio frequency microtron. Power up to 50 W in pulses of 4 μs duration has been generated at wavelengths of 1.6 and 0.9 mm using two different dielectric loaded waveguides.
Published: 1991
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40. Advanced concepts in mechanical design and computerized control system for a hybrid permanent magnet undulator

Author: Gian Piero Gallerano, A. Matrone, F. Ciocci, M. Grattarola, G. Ottonello, Alberto Renieri, F. Rosatelli, Elio Sabia, and L. Barbagelata
Subjects: Physics, Nuclear and High Energy Physics, Safe operation, Position (vector), Control system, Magnet, Mechanical design, Mechanical engineering, Undulator, Instrumentation, Magnetic dipole, Security system
Abstract: A 50 periods long hybrid permanent magnet undulator is being realized at Ansaldo Ricerche for the LISA FEL experiment of the INFN, Frascati, Italy [1]. An innovative design of the mechanical structure and an electronic control system have been developed in order to accurately position the jaws without requiring very tight mechanical tolerances in the manufacturing of the driving components. The mechanical design has been optimized by performing an accurate structural analysis with the ANSYS code. The control system checks the parallellism between the jaws during the gap variation and restores it automatically. Besides, it changes the current of the correction coils to minimize the dipole field integral at each gap. The security system to guarantee the safe operation of the device is also described.
Published: 1991
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41. The high-gain FEL equation: an inexpensive numerical algorithm

Author: F. Ciocci, Giuseppe Dattoli, Amalia Torre, and R. Caloi
Subjects: Physics, Transverse plane, Amplitude, Wave propagation, Simple (abstract algebra), Numerical analysis, Physics::Accelerator Physics, Propagator, Field theory (psychology), Electromagnetic radiation, Algorithm
Abstract: In this paper we discuss a simple and efficient algoritm which allows reliable solutions of the FEL small-signal high-gain equation, even with the pocket computer. We use the same algorithm to calculate the derivatives of the complex field amplitude, with respect to the detuning parameter. The interest, for these last quantities, is motivated by the crucial role they play in the analysis of the evolution of the FEL transverse and longitudinal modes.
Published: 1991
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42. Seeding experiments at SPARC

Author: M. E. Biagini, S. Pagnutti, Concetta Ronsivalle, Vincenzo Surrenti, Giuseppe Dattoli, P.L. Ottaviani, Massimo Petrarca, Enrica Chiadroni, Bertrand Carré, A. Petralia, E. Pace, Bruno Spataro, Hamed Merdji, O. Tchebakoff, D. Garzella, Pierre Breger, D. Alesini, L. Palumbo, Salvatore Stagira, M. Germano, A. Di Pace, A. Clozza, L. Serafini, Alessandro Cianchi, M. Labat, Mauro Nisoli, A. Gallo, P. Monchicourt, Manuela Boscolo, G. L. Orlandi, Giuseppe Sansone, Fabio Frassetto, L. Cultrera, Cristina Vaccarezza, A. Ghigo, M. E. Couprie, Gian Piero Gallerano, V. Fusco, Pascal Salières, Elio Sabia, M. Bougeard, A. Drago, Sven Reiche, Guillaume Lambert, Emilio Giovenale, Massimo Ferrario, Mario Mattioli, Giuseppe Tondello, I. Spassovsky, M. Quattromini, Andrea Doria, S. De Silvestri, F. Ciocci, Daniele Filippetto, Mauro Migliorati, J. Rosenzweig, C. Vicario, M. G. Castellano, Luca Giannessi, G. Di Pirro, L. Poletto, P. Musumeci, and Sandro Tomassini
Subjects: Physics, FEL, Free electron laser, seeding, Nuclear and High Energy Physics, business.industry, Settore FIS/01 - Fisica Sperimentale, Laser, Signal, law.invention, Optics, Work plan, FREE-ELECTRON LASER, law, Cascade, Harmonics, Harmonic, High harmonic generation, RADIATION, Seeding, business, Instrumentation, Free electron laser, AMPLIFIER, seeding, GENERATION
Abstract: In the framework of the DS4 EUROFEL collaboration, a research work plan at the SPARC free-electron laser (FEL) test facility aiming at the investigation of seeded and cascaded FEL configurations is under implementation. The main goal of the collaboration is to study and test the amplification and the FEL harmonic generation process of an input seed signal obtained as higher-order harmonics generated both in crystals (400 and 266 nm) and in gases (266,160,114 nm). The SPARC FEL can be configured to test several cascaded FEL configurations. In this paper we introduce SPARC and its main parameters and we analyze the superradiant cascade and the harmonic cascade seeded with a signal with the typical time structure of the harmonics generated in gas. (C) 2008 Elsevier B.V. All rights reserved.
Published: 2008
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43. The FEL project in the Frascati INFN laboratories with the linear SC accelerator LISA

Author: A. Dipace, P. Patteri, F. Tazzioli, F. Ciocci, N. Cavallo, Giuseppe Dattoli, Mario Serio, F. Cevenini, M. Castellano, Elio Sabia, Alberto Renieri, Claudio Sanelli, Gian Piero Gallerano, A. Torre, and Andrea Ghigo
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Electron linear accelerator, law, Physics::Accelerator Physics, Atomic physics, Collider, Instrumentation, Linear particle accelerator, law.invention
Abstract: A program to construct a test superconducting electron linear accelerator (LISA) is in progress at Frascati INFN National Laboratories. The electron beam will be used to realize an FEL in the infrared region (11–18 μm) in collaboration with a group of ENEA-CRE Frascati. The electron beam parameters and their relation to the expected performances of the FEL are discussed. Some future developments — energy recovery, energy doubling — are briefly presented.
Published: 1990
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44. Spectral properties of the undulator magnets radiation: Analytical and numerical treatment

Author: Giuseppe Dattoli, R. Barbini, Luca Giannessi, and F. Ciocci
Subjects: Physics, Nuclear magnetic resonance, Optics, business.industry, Magnet, Spectral properties, General Physics and Astronomy, Undulator, Radiation, business
Published: 1990
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45. Status of the SPARX FEL project

Author: Gian Piero Gallerano, Simone Cialdi, Sven Reiche, Mario Mattioli, Alessandro Cianchi, F. Ciocci, Daniele Filippetto, L. Catani, Alberto Bacci, D. Alesini, F. Tazzioli, Luca Cultrera, L. Palumbo, Emilio Giovenale, A. Clozza, M. G. Castellano, Cristina Vaccarezza, James Rosenzweig, A. Ghigo, G. Di Pirro, M. Preger, F. Broggi, G. Parisi, Luca Giannessi, M. Quattromini, C. De Martinis, C. Maroli, F. Sgamma, M. Mauri, Enrica Chiadroni, R. Boni, Andrea Doria, S. Bertolucci, Concetta Ronsivalle, L. Pellegrino, Mario Serio, Massimo Ferrario, Manuela Boscolo, G. Messina, Susanna Guiducci, C. Sanelli, Andrea Mostacci, Mauro Migliorati, M. E. Biagini, Luca Ficcadenti, A. Stella, P. Musumeci, Marco Bellaveglia, P. Emma, Alberto Renieri, M. Vescovi, Francesco Flora, Luigi Picardi, A. Drago, V. Fusco, P.L. Ottaviani, Adolfo Esposito, Massimiliano Romé, Giuseppe Dattoli, Vittoria Petrillo, F. Alessandria, C. Schaerf, Bruno Spataro, L. Serafini, Dario Giove, A. Gallo, and C. Vicario
Subjects: Single pass, Upgrade, Computer science, Systems engineering, Free-electron laser, Undulator, Linear particle accelerator
Abstract: The first phase of the SPARX project, now funded by MIUR (Research Department of Italian Government), is an R&D activity focused on developing techniques and critical components for future X-ray FEL facilities. This project is the natural extension of the activities under development within the ongoing SPARC collaboration. The aim is the generation of electron beams characterized by an ultra-high peak brightness with a linear accelerator based on the upgrade of the existing Frascati 800 MeV LINAC and to drive a single pass FEL experiment in the range of 3-5 nm, both in SASE and SEEDED FEL configurations, exploiting the use of superconducting and exotic undulator sections. In this paper we discuss the present status of the collaboration.
Published: 2007
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46. Future seeding experiments at SPARC

Author: 72.L. Poletto, G. Tondello, S. De Silvestri, M. Nisoli, G. Sansone, S. Stagira, P. Musumeci, M. Petrarca, M. Mattioli, M. Labat, O. Tcherbakoff, M. Bougeard, B. Carré, D. Garzella, G. Lambert, H. Merdji, P. Salières, M. E. Couprie, D. Alesini, M. Bellaveglia, M. Biagini, R. Boni, M. Castellano, E. Chiadroni, A. Cianchi, A. Clozza, A. Drago, M. Ferrario, D. Filippetto, V. Fusco, A. Gallo, A. Ghigo, M. Migliorati, L. Palumbo, C. Sanelli, F. Sgamma, B. Spataro, S. Tomassini, C. Vaccarezza, C. Vicario, L. Serafini, S. Ambrogio, F. Ciocci, G. Dattoli, A. Doria, G. P. Gallerano, M. Germano, L. Giannessi, E. Giovenale, I. Spassovsky, M. Quattromini, A. Renieri, C. Ronsivalle, P.L. Ottaviani, S. Pagnutti, M. Rosetti, A. Dipace, and E. Sabia
Subjects: free-electron laser, high-order harmonics
Published: 2007

47. Future seeding experiments at SPARC

Author: L. Poletto, G. Tondello, S. De Silvestri, M. Nisoli, S. Stagira, P. Musumeci, M. Petrarca, M. Mattioli, M.E. Couprie, G. Lambert, M. Labat, H. Merdji, M. Bougeard, D. Garzella, P. Salières, B. Carré, D. Alesini, M. Biagini, R. Boni, M. Castellano, A. Drago, M. Ferrario, A. Gallo, A. Ghigo, M. Migliorati, L. Palumbo, C. Sanelli, B. Spataro, C. Vaccarezza, C. Vicario, V. Fusco, L. Serafini, M. Carpanese, F. Ciocci, G. Dattoli, A. Doria, G. P. Gallerano, L. Giannessi, E. Giovenale, G. Parisi, I. Spassovsky, M. Quattromini, A. Renieri, C. Ronsivalle A. Dipace, and E. Sabia
Published: 2006

48. Diagnosis of relativistic electron beams using a free electron laser amplifier

Author: F. Ciocci and G. Dattoli
Subjects: Physics, Optics, business.industry, Amplifier, Free-electron laser, Physics::Accelerator Physics, Electron, Atomic physics, business, Instrumentation, Beam (structure), Energy (signal processing)
Abstract: The potential use of a free electron laser (FEL) amplifier as a diagnostic tool for relativistic electron beams is investigated. It is in fact shown that a simple relation exists between electron bunch length, energy spread, and the gain of a FEL resonant amplification. It is also discussed how the beam qualities can be derived from an actual experimental configuration. Finally, the possibility of combining the present methods to other techniques, like nondestructive diagnosis with short undulators, is also analyzed.
Published: 1997
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49. Synchrotron radiation from magnetic undulators as a prospective diagnostic tool

Author: R. Barbini, F. Ciocci, A. Torre, G. Dattoli, and L. Giannessi
Subjects: Physics, Brightness, business.industry, Synchrotron radiation, Undulator, Radiation, Optics, Nuclear magnetic resonance, Distortion, Physics::Accelerator Physics, Laser beam quality, Beam emittance, business, Beam (structure)
Abstract: The brightness of the radiation emitted by an ultrarelativistic e-beam passing through a magnetic undulator is sensitive to the beam quality (namely, energy spread and emittances) and to the undulator characteristics (i.e., possible random errors both in intensity and direction of magnetization, etc.). We analyse the spectrum distortion induced by the above effects and discuss the possibility of using the undulator radiation as a diagnostic tool. Finally, we also study the importance of near-field effects when the radiation is detected unfocussed off-axis and how they can combine with the effects induced by the beam emittances to produce a larger on-axis inhomogeneous broadening.
Published: 2005
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50. Development Of A Hybrid Permanent-magnet Undulator Prototype For Free Electron Lasers

Author: F. Ciocci, A. Matrone, D. Tommasini, L. Barbagelata, G. Ottonello, F. Rosatelli, Elio Sabia, Paolo Prati, and Alberto Renieri
Subjects: Free electron model, Physics, Nuclear and High Energy Physics, business.industry, Sorting, Undulator, Laser, law.invention, Nuclear magnetic resonance, Optics, law, Magnet, Mechanical design, business, Instrumentation
Abstract: A hybrid permanent-magnet undulator is under development in Ansaldo Ricerche for the LISA FEL experiment. The criteria adopted to optimize the magnetic and mechanical design of the undulator and the results of field measurements on an eight-period prototype will be discussed. The device used for measuring the permanent-magnet blocks and the code developed for their sorting will be described.
Published: 2005
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