Author: Drebot, I.
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TUPOW004 Status of the STAR Project 1747
 
  • A. Bacci, I. Drebot, L. Serafini, V. Torri
    Istituto Nazionale di Fisica Nucleare, Milano, Italy
  • R.G. Agostino, R. Barberis, M. Ghedini, F. Martire, C. Pace
    UNICAL, Arcavacata di Rende, Italy
  • D. Alesini, M. Bellaveglia, J.J. Beltrano, F.G. Bisesto, G. Borgese, B. Buonomo, G. Di Pirro, G. Di Raddo, A. Esposito, A. Gallo, A. Ghigo, F. Iungo, L. Pellegrino, A. Stella, C. Vaccarezza
    INFN/LNF, Frascati (Roma), Italy
  • A. Cianchi
    INFN-Roma II, Roma, Italy
  • G. D'Auria, A. Fabris, M. Marazzi
    Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
  • V. Petrillo
    Universita' degli Studi di Milano, Milano, Italy
  • E. Puppin
    Politecnico/Milano, Milano, Italy
  • M. Rossetti Conti
    Universita' degli Studi di Milano & INFN, Milano, Italy
 
  This paper reports on the final design and the work in progress on the STAR project (IPAC2014:WEPRO115), which is under construction at the Univ. of Calabria (Italy). The project is devoted to the construction of an advanced Thomson source of monochromatic tunable, ps-long, polarized X-ray beams, ranging from 40 up to 140 KeV . At present the buildings and main plants have been completed as the acquisition of main components: the RF photo-injector, the accelerating section, laser systems for collision and photo-cathode, RF Power Source and magnets are ready to start installation and site acceptance tests. The design of laser lines is complete and simulated by ZEMAX, aiming to minimize energy losses, optical distortions and providing a tunable experimental setup as well. The RF power network is close to be tested, it's based on a 55MW (2.5us pulse) S-band Klystron driven by a 500kV Pulse Forming Network based modulator and a Low Level RF system, running at 100 Hz. The Control System is been designed using EPICS and allows to manage easily and fastly each machine parameter. We expect to start commissioning the machine by the end of 2016 and obtain the first collisions within the first part of 2017.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOW004  
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TUPOW041 Optimization Studies for the Beam Dynamic in the RF Linac of the ELI-NP Gamma Beam System 1850
 
  • C. Vaccarezza, D. Alesini, M. Bellaveglia, M.E. Biagini, G. Di Pirro, A. Gallo, A. Ghigo, S. Guiducci, A. Vannozzi, A. Variola
    INFN/LNF, Frascati (Roma), Italy
  • A. Bacci, I. Drebot, D.T. Palmer, A.R. Rossi, L. Serafini
    Istituto Nazionale di Fisica Nucleare, Milano, Italy
  • G. Campogiani
    Rome University La Sapienza, Roma, Italy
  • A. Giribono, A. Mostacci, L. Palumbo
    University of Rome La Sapienza, Rome, Italy
  • V. Petrillo
    Universita' degli Studi di Milano & INFN, Milano, Italy
  • L. Sabbatini
    Consorzio Laboratorio Nicola Cabibbo, Frascati, Italy
 
  The ELI-NP GBS is an high spectral density and monochromatic gamma ray source based upon the inverse Compton scattering effect now under construction in Magurele.  Its relevant specifications are brilliance higher than 1021, 0.5% monochromaticity and a 0.2-19.5 MeV energy tunability. Strong requirements are set for the electron beam dynamic: the control of both the transverse normalized emittance and the energy spread to optimize the spectral density and guarantee the mono chromaticity of the emitted radiation. On this basis the RF Linac optimization has been performed for the designed energy range; a sensitivity analysis of the machine to possible jitters, errors and so on has been also performed, the simulations results hare here presented.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOW041  
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TUPOW043 Electron Beam Dynamics Studies for ELI-NP GBS Linac 1857
SUPSS017   use link to see paper's listing under its alternate paper code  
 
  • A. Giribono, F. Cardelli, L. Palumbo, L. Piersanti
    University of Rome La Sapienza, Rome, Italy
  • D. Alesini, A. Gallo, C. Vaccarezza, A. Vannozzi
    INFN/LNF, Frascati (Roma), Italy
  • A. Bacci, C. Curatolo, I. Drebot, V. Petrillo, A.R. Rossi, L. Serafini
    Istituto Nazionale di Fisica Nucleare, Milano, Italy
  • G. Campogiani
    Rome University La Sapienza, Roma, Italy
  • F. Cardelli, L. Piersanti
    INFN-Roma1, Rome, Italy
  • L. Palumbo
    INFN-Roma, Roma, Italy
 
  The ELI-NP Gamma Beam System is an advanced gamma ray source based on the Compton back-scattering effect with unprecedented specifications of brilliance ( >1021), monochromaticity (0.5%) and energy tunability (0.2 - 19.5 MeV), presently under construction in Magurele-Bucharest (RO). Here the head-on collision is foreseen between an intense high power laser beam and a high brightness high quality electron beam with a maximum kinetic energy of 740 MeV. The electron beam dynamics analysis and control for the ELI-NP GBS Linac in the single and multi bunch mode have been investigated and are here illustrated.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOW043  
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MOPMB019 Quadrupole Scan Emittance Measurements for the ELI-NP Compton Gamma Source 126
 
  • A.R. Rossi, A. Bacci, L. Serafini
    Istituto Nazionale di Fisica Nucleare, Milano, Italy
  • E. Chiadroni, C. Vaccarezza, A. Variola
    INFN/LNF, Frascati (Roma), Italy
  • A. Cianchi
    Università di Roma II Tor Vergata, Roma, Italy
  • C. Curatolo, I. Drebot
    Universita' degli Studi di Milano e INFN, Milano, Italy
  • A. Giribono, A. Mostacci
    University of Rome La Sapienza, Rome, Italy
  • V. Petrillo, M. Rossetti Conti
    Universita' degli Studi di Milano & INFN, Milano, Italy
 
  The high brightness electron LINAC of the Compton Gamma Source at the ELI Nuclear Physics facility in Romania is accelerating a train of 32 bunches with a nominal charge of 250 pC and nominal spacing of 16 ns. To achieve the design gamma flux, all the bunches along the train must have the designed Twiss parameters. Beam sizes are measured with optical transition radiation monitors, allowing a quadrupole scan for Twiss parameters measurements. Since focusing the whole bunch train on the screen may lead to permanent screen damage, we investigated non-conventional scans such as scans around a maximum of the beam size or scans with a controlled minimum spot size. This paper discusses the implementation issues of such a technique in the actual machine layout.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMB019  
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TUPOW042 Expected Gamma Spectra at ELI-NP-GBS 1854
 
  • I. Drebot, C. Curatolo
    Universita' degli Studi di Milano e INFN, Milano, Italy
  • A. Bacci, A.R. Rossi, L. Serafini
    Istituto Nazionale di Fisica Nucleare, Milano, Italy
  • A. Giribono
    University of Rome "La Sapienza", Rome, Italy
  • V. Petrillo
    Universita' degli Studi di Milano & INFN, Milano, Italy
  • C. Vaccarezza, A. Variola
    INFN/LNF, Frascati (Roma), Italy
 
  The ELI-NP-GBS is an advanced source of up to 20 MeV Gamma Rays based on Compton back-scattering. We present the investigation of the production of the ELI-NP gamma photon beam generated by Compton back-scattering between the electron bunch accelerated in the linac and the laser pulse. At the interaction point (IP), the Compton backscattering properties, as spectral flux, brilliance and polarization are evaluated by the Klein-Nishina cross section. The gamma beam produced has energy ranging from 0.2 to 19.5 MeV and bandwidth of 0.5%. In order to define the optimal layout and evaluate the performances of the collimation and detection systems, a detailed Monte Carlo simulation activity has been carried out taking into account possible jitters and errors.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOW042  
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