Author: Zangrando, M.
Paper Title Page
TUPS008 The Gas Attenuator Vacuum System of FERMI@Elettra 1530
 
  • L. Rumiz, D. Cocco, C. Fava, S. Gerusina, R. Gobessi, E. Mazzucco, F. Zudini
    ELETTRA, Basovizza, Italy
  • M. Zangrando
    IOM-CNR, Trieste, Italy
  
  The FERMI@​Elettra Free Elec­tron Laser aims to pro­duce a co­her­ent light in the EUV-soft X-ray range em­ploy­ing High Gain Har­mon­ic Gen­er­a­tion (HGHG) schemes. The ul­tra­fast, high in­ten­si­ty puls­es are de­liv­ered to the ex­per­i­men­tal sta­tions by means of a sec­tion called PADReS (Pho­ton Anal­y­sis De­liv­ery and Re­duc­tion Sys­tem). Since sev­er­al ex­per­i­ments need to re­duce the FEL ra­di­a­tion in­ten­si­ty with­out chang­ing the ma­chine pa­ram­e­ters, PADReS pro­vides an in­te­grat­ed sys­tem to mea­sure and re­duce it up to 4 or­ders of mag­ni­tude. It is com­posed by a win­dow­less gas-filled cell, a gas in­jec­tion sys­tem, a dif­fer­en­tial pump­ing sys­tem, and the in­ten­si­ty mon­i­tors. The gas cell can be filled up to 0.15 mbar of ni­tro­gen and the dif­fer­en­tial pump­ing sys­tem can keep up over 6 or­ders of mag­ni­tude. The pres­sure is fine­ly reg­u­lat­ed in the ·10-5 mbar range in the in­ten­si­ty mon­i­tor vac­u­um cham­ber, al­most in­de­pen­dent­ly from the gas cell pres­sure level. The gen­er­al lay­out and the per­for­mance of the dif­fer­en­tial pump­ing sys­tem pro­to­type are pre­sent­ed.  
 
TUZA01 Commissioning and Initial Operation of FERMI@Elettra 918
 
  • S. Di Mitri, E. Allaria, R. Appio, L. Badano, S. Bassanese, F. Bencivenga, A.O. Borga, M. Bossi, E. Busetto, C. Callegari, F. Capotondi, K. Casarin, D. Castronovo, P. Cinquegrana, D. Cocco, M. Cornacchia, P. Craievich, R. Cucini, I. Cudin, G. D'Auria, M.B. Danailov, R. De Monte, P. Delgiusto, A.A. Demidovich, B. Diviacco, A. Fabris, R. Fabris, W.M. Fawley, M. Ferianis, S. Ferry, V. Feyer, L. Fröhlich, P. Furlan Radivo, G. Gaio, F. Gelmetti, L. Giannessi, R. Gobessi, R. Ivanov, E. Karantzoulis, M. Kiskinova, M. Lonza, A.A. Lutman, C. Masciovecchio, R.H. Menk, M.M. Milloch, M.M. Musardo, I. Nikolov, S. Noe, F. Parmigiani, L. Pavlovič, E. Pedersoli, G. Penco, M. Petronio, M. Predonzani, E. Principi, E. Quai, G. Quondam, F. Rossi, L. Rumiz, C. Scafuri, C. Serpico, P. Sigalotti, C. Spezzani, M. Svandrlik, C. Svetina, M. Trovò, A. Vascotto, M. Veronese, R. Visintini, D. Wang, M. Zaccaria, D. Zangrando
    ELETTRA, Basovizza, Italy
  • M. Alagia, A. Kivimaki, M. Zangrando, M. de Simone
    IOM-CNR, Trieste, Italy
  • L. Avaldi, P. Bolognesi, M. Coreno, P. O’Keeffe
    CNR - IMIP, Trieste, Italy
  • M. Dal Forno
    DIEIT, Trieste, Italy
  • G. De Ninno, S. Spampinati
    University of Nova Gorica, Nova Gorica, Slovenia
  • M. Devetta, T. Mazza, P. Piseri
    Università degli Studi di Milano, Milano, Italy
  • E. Ferrari
    Università degli Studi di Trieste, Trieste, Italy
  • S. Stranges
    Università di Roma "La Sapienza", Roma, Italy
  
  Funding: Work was supported in part by the Italian Ministry of University and Research under grants FIRB-RBAP045JF2 and FIRB-RBAP06AWK3.
This ar­ti­cle de­scribes the de­sign goals of FERMI@​Elettra, re­ports on the goals achieved so far and shows how the fa­cil­i­ty de­vel­op­ment has been driv­en by the new re­search fron­tier of ul­tra-fast, ex­treme ul­tra-vi­o­let and soft X-ray sci­ence. The com­mis­sion­ing phas­es and first ex­pe­ri­ence with user pilot ex­per­i­ments are pre­sent­ed and dis­cussed. 		 
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