Author: Palumbo, L.
Paper Title Page
WEPPP017 Recent Results at the SPARCLAB Facility 2758
  • M. Ferrario, D. Alesini, M.P. Anania, M. Bellaveglia, R. Boni, M. Castellano, E. Chiadroni, G. Di Pirro, A. Drago, A. Esposito, A. Gallo, C. Gatti, G. Gatti, A. Ghigo, T. Levato, E. Pace, L. Pellegrino, R. Pompili, A.R. Rossi, B. Spataro, P. Tomassini, C. Vaccarezza, F. Villa
    INFN/LNF, Frascati (Roma), Italy
  • A. Bacci, C. De Martinis, L. Serafini
    Istituto Nazionale di Fisica Nucleare, Milano, Italy
  • A. Cianchi
    Università di Roma II Tor Vergata, Roma, Italy
  • G. Dattoli, E. Di Palma, L. Giannessi, A. Petralia, M. Quattromini, C. Ronsivalle, I.P. Spassovsky, V. Surrenti
    ENEA C.R. Frascati, Frascati (Roma), Italy
  • D. Di Giovenale
    INFN-Roma II, Roma, Italy
  • U. Dosselli
    INFN, Roma, Italy
  • R. Faccini
    INFN-Roma, Roma, Italy
  • R. Fedele
    Naples University Federico II, Mathematical, Physical and Natural Sciences Faculty, Napoli, Italy
  • M. Gambaccini
    INFN-Ferrara, Ferrara, Italy
  • D. Giulietti
    UNIPI, Pisa, Italy
  • L.A. Gizzi, L. Labate
    CNR/IPP, Pisa, Italy
  • P. Londrillo
    INFN-Bologna, Bologna, Italy
  • S. Lupi
    Università di Roma I La Sapienza, Roma, Italy
  • A. Mostacci, L. Palumbo
    Rome University La Sapienza, Roma, Italy
  • G. Passaleva
    INFN-FI, Sesto Fiorentino, Italy
  • V. Petrillo
    Universita' degli Studi di Milano, Milano, Italy
  • J.V. Rau
    ISM-CNR, Rome, Italy
  • G. Turchetti
    Bologna University, Bologna, Italy
  A new facility named SPARCLAB (Sources for Plasma Accelerators and Radiation Compton with Lasers and Beams) has been recently launched at the INFN National Labs in Frascati, merging the potentialities of the old projects SPARC and PLASMONX. The SPARC project, a collaboration among INFN, ENEA and CNR, is now completed, hosting a 150 MeV high brightness electron beam injector which feeds a 12 meters long undulator. Observation of FEL radiation in the SASE, Seeded and HHG modes has been performed from 500 nm down to 40 nm wevelength. A second beam line has been also installed to drive a narrow band THz radiation source. In parallel to that, INFN decided to host a 300 TW laser that will be linked to the linac and devoted to explore laser-matter interaction, in particular with regard to laser-plasma acceleration in the self injection and external injection modes, (the PLASMONX experiments). The facility will be also used for particle driven plasma acceleration experiments (the COMB experiment). A Thomson scattering experiment coupling the electron bunch to the high-power laser to generate coherent monochromatic X-ray radiation is also in the commissioning phase.  
TUOBB01 A European Proposal for the Compton Gamma-ray Source of ELI-NP 1086
  • L. Serafini, I. Boscolo, F. Broggi, V. Petrillo
    Istituto Nazionale di Fisica Nucleare, Milano, Italy
  • O. Adriani, G. Graziani, G. Passaleva
    INFN-FI, Sesto Fiorentino, Italy
  • S. Albergo, A. Tricomi
    INFN-CT, Catania, Italy
  • D. Alesini, M.P. Anania, A. Bacci, R. Bedogni, M. Bellaveglia, C. Biscari, R. Boni, M. Boscolo, M. Castellano, E. Chiadroni, A. Clozza, E. Di Pasquale, G. Di Pirro, A. Drago, A. Esposito, M. Ferrario, A. Gallo, G. Gatti, A. Ghigo, F. Marcellini, C. Maroli, G. Mazzitelli, E. Pace, L. Pellegrino, R. Ricci, M. Serio, F. Sgamma, B. Spataro, A. Stecchi, A. Stella, P. Tomassini, C. Vaccarezza, S. Vescovi, F. Villa
    INFN/LNF, Frascati (Roma), Italy
  • D. Angal-Kalinin, J.A. Clarke, B.D. Fell, A.R. Goulden, J.D. Herbert, S.P. Jamison, P.A. McIntosh, R.J. Smith, S.L. Smith
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
  • P. Antici, M. Coppola, L. Lancia, A. Mostacci, L. Palumbo
    URLS, Rome, Italy
  • N. Bliss, B.G. Martlew
    STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom
  • P. Cardarelli, M. Gambaccini
    INFN-Ferrara, Ferrara, Italy
  • L. Catani, A. Cianchi
    INFN-Roma II, Roma, Italy
  • I. Chaikovska, O. Dadoun, A. Stocchi, A. Variola, Z.F. Zomer
    LAL, Orsay, France
  • C. De Martinis
    INFN/LASA, Segrate (MI), Italy
  • F. Druon, P. Fichot
    ILE, Palaiseau Cedex, France
  • E. Iarocci
    University of Rome "La Sapienza", Rome, Italy
  • M. Migliorati
    Rome University La Sapienza, Roma, Italy
  • A.-S. Müller
    IN2P3, Paris, France
  • V. Nardone
    Università di Roma I La Sapienza, Roma, Italy
  • C. Ronsivalle
    ENEA C.R. Frascati, Frascati (Roma), Italy
  • M. Veltri
    Uniurb, Urbino (PU), Italy
  A European proposal is under preparation for the Compton gamma-ray Source of ELI-NP. In the Romanian pillar of ELI (the European Extreme Light Infrastructure) an advanced gamma-ray beam is foreseen, coupled to two 10 PW laser systems. The photons will be generated by Compton back-scattering in the collision between a high quality electron beam and a high power laser. A European collaboration formed by INFN, Univ. of Roma La Sapienza, Orsay-LAL of IN2P3, Univ. de Paris Sud XI and ASTeC at Daresbury, is preparing a TDR exploring the feasibility of a machine expected to achieve the Gamma-ray beam specifications: energy tunable between 1 and 20 MeV, narrow bandwidth (0.3%) and high spectral density, 104 photons/sec/eV. We will describe the lay-out of the 720 MeV RF Linac and the collision laser with the associated optical cavity, as well as the optimized beam dynamics to achieve maximum phase space density at the collision, taking into account beam loading and beam break-up due to the acceleration of long bunch trains. The predicted gamma-ray spectra will be evaluated as the gamma photons collimators background. An option for electron bunches recirculation will also be illustrated.  
slides icon Slides TUOBB01 [5.099 MB]  
WEPPR051 Issues for a Multi-bunch Operation with SPARC C-band Cavities 3042
  • A. Mostacci, M. Migliorati, L. Palumbo
    URLS, Rome, Italy
  • D. Alesini, B. Spataro, C. Vaccarezza
    INFN/LNF, Frascati (Roma), Italy
  SPARC C-band traveling wave cavities were originally designed for the SPARC energy upgrade in the single bunch operation mode. In the context of a gamma source based on Compton backscattering and based on the SPARC C-band technology, we investigated the issues related to the use of these structures in the multi-bunch operation mode. Several beam configurations have been considered and the effects of transverse and longitudinal long range wakefields on beam dynamics have been studied. In the paper we present the results of these studies and, in particular, the issues related to transverse beam break-up that could prevent the multi-bunch operation. Possible HOM damped structures are also proposed.  
WEPPR062 The Mode Matching Method Applied to Beam Coupling Impedance Calculations of Finite Length Devices 3069
  • N. Biancacci, E. Métral, B. Salvant
    CERN, Geneva, Switzerland
  • M. Migliorati, L. Palumbo
    URLS, Rome, Italy
  • V.G. Vaccaro
    Naples University Federico II and INFN, Napoli, Italy
  The infinite length approximation is often used to simplify the calculation of the beam coupling impedance of accelerator elements. This is expected to be a reasonable assumption for devices whose length is greater than the transverse dimension but may be less accurate approximation for segmented devices. This contribution presents the study of the beam coupling impedance in the case of a finite length device: a cylindrical cavity loaded with a toroidal slab of material. In order to take into account the finite length we will decompose the field in the cavity and in the beam pipe into a set of orthonormal modes and apply the mode matching method to obtain the impedance. To validate our method, we will present comparisons between analytical formulas and 3D electromagnetic CST simulations as well as applications to the impedance of short beam pipe inserts, where the longitudinal and transverse dimensions are difficult to model in numerical simulations.