A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z  

Walter, W.

Paper Title Page
WEPD021 Magnetic Field Characteristics of a SIS 100 Full Size Dipole 2452
 
  • P. Schnizer, E. S. Fischer
    GSI, Darmstadt
  • P. G. Akishin
    JINR, Dubna, Moscow Region
  • R. V. Kurnyshov
    Electroplant, Moscow
  • B. Schnizer
    TUG/ITP, Graz
  • P. A. Shcherbakov
    IHEP Protvino, Protvino, Moscow Region
  • G. Sikler, W. Walter
    BNG, Würzburg
 
  FAIR will feature two superconducting fast ramped synchrotrons. The dipole magnets for one of them, SIS 100, have been designed and prototypes were built. The properties of the magnetic field were analysed using OPERA (for DC operation) and ANSYS for dynamic calculations. Elliptic multipoles fulfilling the Laplace Equation in plane elliptic coordinates describe the field within the whole aperture consistently within a single expansion. Further circular multipoles, valid within the ellipse, can be calculated analytically from the elliptic multipoles. The advantage of this data representation is illustrated on the FEM calculation performed for SIS 100 dipoles and quadrupoles currently foreseen for the machine. The magnetic field of one of these prototypes was measured using a mole. We compare the results of the calculation to the measurement for the static as well as the dynamic mode.  
WEPC125 Development of Three New Superconducting Insertion Devices for the ANKA Storage Ring 2300
 
  • R. Rossmanith, S. Casalbuoni, A. W. Grau, M. Hagelstein
    FZK, Karlsruhe
  • T. Baumbach, A. Bernhard, P. Peiffer, D. Wollmann
    University of Karlsruhe, Karlsruhe
  • C. Boffo, M. Borlein, W. Walter
    BNG, Würzburg
  • B. K. Kostka, E. M. Mashkina, E. Steffens
    University of Erlangen-Nürnberg, Physikalisches Institut II, Erlangen
 
  After a first successful test of a superconductive cold bore undulator in ANKA a new generation of superconductive insertion devices is under construction or in a detailed planning phase. The first one, referred to as as SCU14 and now under construction, is an improved version of the existing undulator (14 mm period length, 100 periods long) with a new cooling scheme for small gap operation and a reduced field error. The period length of the second device called SCUW can be switched electrically between 15 and 45 mm. The third one is a superconductive undulator which can tolerate a beam heat load of several Watts in combination with a small field error named SCU2. It is designed for third generation light sources with a heat load of up to 6 Watt from the beam to the cold bore.