TH1A —  Invited Oral Presentations   (13-Sep-12   08:30—10:30)
Chair: P.N. Ostroumov, ANL, Argonne, USA
Paper Title Page
TH1A01 Results Achieved by the S1-Global Collaboration for ILC 748
  • H. Hayano, M. Akemoto, S. Fukuda, K. Hara, N. Higashi, E. Kako, H. Katagiri, Y. Kojima, Y. Kondo, T. Matsumoto, S. Michizono, T. Miura, H. Nakai, H. Nakajima, K. Nakanishi, S. Noguchi, N. Ohuchi, T. Saeki, T. Shidara, T. Shishido, T. Takenaka, A. Terashima, N. Toge, K. Tsuchiya, K. Watanabe, S. Yamaguchi, A. Yamamoto, Y. Yamamoto, K. Yokoya
    KEK, Ibaraki, Japan
  • C. Adolphsen, C.D. Nantista
    SLAC, Menlo Park, California, USA
  • T.T. Arkan, S. Barbanotti, M.A. Battistoni, H. Carter, M.S. Champion, A. Hocker, R.D. Kephart, J.S. Kerby, D.V. Mitchell, T.J. Peterson, Y.M. Pischalnikov, M.C. Ross, W. Schappert, B.E. Smith
    Fermilab, Batavia, USA
  • A. Bosotti, R. Paparella, P. Pierini
    INFN/LASA, Segrate (MI), Italy
  • K. Jensch, D. Kostin, L. Lilje, A. Matheisen, W.-D. Möller, P. Schilling, M. Schmökel, N.J. Walker, H. Weise
    DESY, Hamburg, Germany
  • C. Pagani
    Università degli Studi di Milano & INFN, Segrate, Italy
  The S1-Global collaboration (scope and plans presented at Linac10) ended successfully in 2011. In the S1-Global experiment several variants of ILC components (e.g. cavities, tuners, modules, couplers) proposed by all SCRF collaborators worldwide have been extensively tested and their performances compared, in order to build consensus for the technical choices towards the ILC TDR and to develop further the concept of plug-compatible components for ILC. The experiment has been carried at KEK with contribution of hardware and manpower from all collaborators.  
slides icon Slides TH1A01 [6.656 MB]  
TH1A02 Compact Superconducting Crabbing and Deflecting Cavities 753
  • S.U. De Silva
    ODU, Norfolk, Virginia, USA
  • S.U. De Silva
    JLAB, Newport News, Virginia, USA
  Recently, new geometries for superconducting crabbing and deflecting cavities have been developed that have significantly improved properties over those the standard TM110 cavities. They are smaller, have low surface fields, high shunt impedance and, more importantly for some of them, no lower-order-mode with a well-separated fundamental mode. This talk will present the status of the development of these cavities.  
slides icon Slides TH1A02 [3.811 MB]  
TH1A03 Superconducting Spoke Cavities for Electron and High-Velocity Proton Linacs 758
  • J.R. Delayen
    ODU, Norfolk, Virginia, USA
  Spoke resonantors are currently under development for many proton machines but these structures are also considered for high beta electron linacs as well. These structures compare well to traditional elliptical cavities.  
slides icon Slides TH1A03 [3.570 MB]  
TH1A04 Superconducting Linac and Associated Developments at IUAC Delhi 763
  • A. Roy
    IUAC, New Delhi, India
  A superconducting linear accelerator system consisting of a series of independently phase locked niobium quarter wave resonators has been developed as a booster of heavy ion beams available from the existing 15UD Pelletron accelerator. Two superconducting linac booster modules having eight niobium quarter wave resonators (QWRs) each have been installed and are fully operational for regular scheduled experiments. The third module is being added to the system. A new high current injector has been planned to couple to the superconducting linac. For this a high temperature superconducting electron cyclotron resonance ion source (HTS-ECRIS) was designed, fabricated and installed successfully. A radio frequency quadrupole (RFQ) accelerator is being developed for accelerating accelerate ions from the ECR (A/Q ~ 6) to an energy to of about 180 keV/A. The beams will then be accelerated further by drift tube linacs (DTL) to the required velocity to inject them to the existing superconducting linac booster. Prototypes of both these have been tested for power and thermal studies. Details of these developments and associated systems will be presented.  
slides icon Slides TH1A04 [7.830 MB]  
Emittance-partitioning Strategies for Future Accelerator Applications  
  • K. Bishofberger, M. Ben-Naim, B.E. Carlsten, L.D. Duffy, R.C. McCrady, N.A. Yampolsky
    LANL, Los Alamos, New Mexico, USA
  The prevailing limit on many linear-accelerator applications is the transverse emittances of the beam. For example, XFEL and collider performance depend on transverse emittances more than longitudinal, which for an XFEL can be up to three orders of magnitude larger than in the transverse dimensions. Recent theoretical treatment of eigen-emittance manipulations has offered a new capability to generate, in principle, extraordinarily bright electron beams. Specific strategies are explored which partition the six-dimensional phase space with a specific goal of deriving low transverse emittances, and examples leading to transverse emittances of 0.1 – 0.2 μm for 250 pC are provided.  
slides icon Slides TH1A05 [1.858 MB]