Author: Lollo, V.L.
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MOPMB017 Design Issues for the Optical Transition Radiation Screens for theELI-NP Compton Gamma Source 118
 
  • M. Marongiu, A. Giribono, A. Mostacci, V. Pettinacci
    INFN-Roma, Roma, Italy
  • D. Alesini, E. Chiadroni, F. Cioeta, G. Di Pirro, V.L. Lollo, L. Pellegrino, V. Shpakov, A. Stella, C. Vaccarezza, A. Variola
    INFN/LNF, Frascati (Roma), Italy
  • A. Cianchi
    INFN-Roma II, Roma, Italy
  • L. Palumbo
    University of Rome La Sapienza, Rome, Italy
 
  A high brightness electron LINAC is being built in the Compton Gamma Source at the ELI Nuclear Physics facility in Romania. To achieve the design luminosity, a train of 32, 16 ns spaced, bunches with a nominal charge of 250 pC will collide with the laser beam in the interaction point. Electron beam spot size is measured with optical transition radiation profile monitors. In order to measure the beam properties along the train, the screens must sustain the thermal stress due to the energy deposited by the bunches; moreover the optical radiation detecting system must have the necessary accuracy and resolution. This paper deals with the analytical studies as well as numerical simulations to investigate the thermal behaviour of the screens impinged by the nominal bunch; the design and the performance of the optical detection line is discussed as well.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMB017  
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MOPMW004 Realization and High Power Tests of Damped C-Band Accelerating Structures for the ELI-NP Linac 399
 
  • D. Alesini, M. Bellaveglia, S. Bini, R. Boni, P. Chimenti, F. Cioeta, R.D. Di Raddo, A. Falone, A. Gallo, V.L. Lollo, L. Palumbo, S. Pioli, A. Variola
    INFN/LNF, Frascati (Roma), Italy
  • F. Cardelli, M. Magi, A. Mostacci, L. Palumbo, L. Piersanti
    University of Rome La Sapienza, Rome, Italy
  • F. Cardelli, L. Piersanti
    INFN-Roma1, Rome, Italy
  • P. Favaron, F. Poletto
    INFN/LNL, Legnaro (PD), Italy
  • L. Ficcadenti, F. Pellegrino, V. Pettinacci
    INFN-Roma, Roma, Italy
 
  The ELI-NP C-Band structures are 1.8 m long travelling wave accelerating structures, quasi-constant gradient, with a field phase advance per cell of 2pi/3. They operate at a repetition rate of 100 Hz and, because of the multi-bunch operation, they have been designed with a dipole HOM damping system to avoid beam break-up (BBU). The structures have symmetric input and output couplers and integrate, in each cell, a waveguide HOM damping systems with silicon carbide RF absorbers. An optimization of the electromagnetic and mechanical design has been done to simplify the fabrication and to reduce their cost. After the first full scale prototype successfully tested at the nominal gradient of 33 MV/m, the production of the twelve structures started. In the paper we illustrate the main design criteria, the realization process and the high power test results.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMW004  
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TUPMY041 Delivery Status of the ELI-NP Gamma Beam System 1635
 
  • S. Tomassini, D. Alesini, A. Battisti, R. Boni, F. Cioeta, A. Delle Piane, E. Di Pasquale, G. Di Pirro, A. Falone, A. Gallo, S.I. Incremona, V.L. Lollo, A. Mostacci, S. Pioli, R. Ricci, U. Rotundo, A. Stella, C. Vaccarezza, A. Vannozzi, A. Variola
    INFN/LNF, Frascati (Roma), Italy
  • A. Bacci, D.T. Palmer, L. Serafini
    Istituto Nazionale di Fisica Nucleare, Milano, Italy
  • N. Bliss
    STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom
  • F. Cardelli
    INFN-Roma1, Rome, Italy
  • K. Cassou, Z.F. Zomer
    LAL, Orsay, France
  • G. D'Auria
    Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
  • A. Giribono, V. Pettinacci
    INFN-Roma, Roma, Italy
  • C. Hill
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
  • L. Palumbo
    Rome University La Sapienza, Roma, Italy
  • L. Piersanti
    University of Rome La Sapienza, Rome, Italy
 
  The ELI-NP GBS is a high intensity and monochromatic gamma source under construction in Magurele (Romania). The design and construction of the Gamma Beam System complex as well as the integration of the technical plants and the commissioning of the overall facility, was awarded to the Eurogammas Consortium in March 2014. The delivery of the facility has been planned in for 4 stages and the first one was fulfilled in October 31st 2015. The engineering aspects related to the delivery stage 1 are presented.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMY041  
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