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Where’s my flying car..........

RF Structures in a NF...... or. Where’s my flying car. A number of questions exist about cavity feasibility Reproducibility Effects of manufacture Dominate phenomena. U.K. Consortium working in collaboration with MUCOOL; Imperial College , Cockcroft Institute, Liverpool University

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Where’s my flying car..........

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  1. RF Structures in a NF...... or Where’s my flying car..........

  2. A number of questions exist about cavity feasibility • Reproducibility • Effects of manufacture • Dominate phenomena U.K. Consortium working in collaboration with MUCOOL; • Imperial College , Cockcroft Institute, Liverpool University • This work will be discussed by: • Matt Stables – Surface Characterisation • Arash Zarrebini-esfahani – Modelling

  3. NF Requirements: • 300 SC cavities at 200 MHz (study 2a) • or > 40 SC cavities at 200 MHz (RLA-FFAG) • > 17 MV/m at a Q0 of > 6×109 R.L.Geng, PAC 2003 R.L.Geng, PAC 2003

  4. CERN, IPJ-Swierk, DESY, LNL-INFN, Lancs, CEA-Saclay, IPNO-IN2P£ FP7 – EuCard Thin Films Examining phenomena limit current performance and investigating alternative coating techniques Several mechanisms for the thin film Q-drop[i]ii],[iii]; High Rinterface Low Nb [i]E. Palmieri, "Q-Drop: an Analysis Starting from Elementary Fundamental Theory", 12th Workshop on RF Superconductivity, Ithaca USA (2005) - TuA02 [ii]J. Halbritter et al., "RF Residual Losses, High Electric and Magnetic RF Fields in Superconducting Cavities", 38th Eloisatron Project Workshop, Erice ITALY (1999) [iii]V. Arbet-Engels et al., "Superconducting Nb Cavities, a Case for the Film Technology", NIM A 463, p. 1-8 (2001)

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