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| MOPC111 |
Lattice Studies for Spin-filtering Experiments at COSY and AD
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322 |
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- A. Garishvili, A. N. Nass, E. Steffens
University of Erlangen-Nürnberg, Physikalisches Institut II, Erlangen
- A. Lehrach, B. Lorentz, R. Maier, F. Rathmann, R. Schleichert, H. Ströher
FZJ, Jülich
- P. Lenisa, M. Statera
INFN-Ferrara, Ferrara
- S. A. Martin
UGS, Langenbernsdorf
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In the framework of the FAIR project, the PAX collaboration has proposed a research program based on polarized antiprotons. Polarized antiprotons are to be produced by spin-dependent attenuation on a polarized hydrogen target. For a better understanding of this mechanism it is planned to perform Spin-Filtering studies with protons at COSY (Jülich). In a second phase, it is envisioned to study Spin-Filtering with antiprotons at the AD (CERN). Which will allow for the determination of the total spin-dependent transverse and longitudinal cross sections. In order to achieve the required long storage times, a storage ring section has to be developed which minimizes the spin-independent losses due to Coulomb scattering. The Coulomb-loss cross section for single scattering losses at fixed energy is proportional to the acceptance angle. Therefore, at the target point the beta functions should be as small as possible. Fot the 'low-beta' section, superconducting quadrupole magnets are utilized. It is composed of two (COSY) and three (AD) SC quadrupoles on each side of the target. Results of the lattice studies and requirements for the superconducting quadrupole magnets will be discussed
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| WEPC121 |
Magnetic Measurement Device for Superconductive Undulator Mock-up Coils at ANKA
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2291 |
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- E. M. Mashkina, B. K. Kostka, E. Steffens
University of Erlangen-Nürnberg, Physikalisches Institut II, Erlangen
- T. Baumbach, A. Bernhard, D. Wollmann
University of Karlsruhe, Karlsruhe
- S. Casalbuoni, A. W. Grau, M. Hagelstein, R. Rossmanith
FZK, Karlsruhe
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A device for precise magnetic measurements of superconductive coils was designed, built and installed at the synchrotron radiation source ANKA, Forschungszentrum Karlsruhe. Accurate magnetic field measurements are a prerequisite for the characterization and optimization of insertion devices. The new device allows measuring the magnetic field magnitude of test coils with a longitudinal precision of 10 μm using a 2D Hall probe bench. The cylindrical liquid He cryostat allows mounting coils of maximum dimensions 50 cm in length and 30 cm in diameter. The set-up is computer controlled. The contribution will present the new device as well as the results obtained.
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| WEPC125 |
Development of Three New Superconducting Insertion Devices for the ANKA Storage Ring
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2300 |
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- 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
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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.
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