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HK: Physik der Hadronen und Kerne
HK 14: Poster Session: Instrumentation and Applications
HK 14.31: Poster
Tuesday, March 12, 2002, 10:30–12:45, Foyer Chemie
Beam Properties of the ANKE Atomic Beam Source — •Alexandre Vassiliev1, Reinhard Emmerich2, Ralf Engels2, Vladimir Koptev1, Peter Kravtsov1, Jürgen Ley2, Bernd Lorentz3, Stefan Lorenz4, Maxim Mikirtytchiants1,3, Mikhail Nekipelov1,3, Hans Paetz gen. Schieck2, Frank Rathmann3, Hellmut Seyfarth3, Erhard Steffens4, and Hans Ströher3 — 1High Energy Physics Department, Petersburg Nuclear Physics Institute, 188300 Gatchina, Russia — 2Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany — 3Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany — 4Physikalisches Institut II, Friedrich-Alexander Universität, 91058 Erlangen, Germany
The polarized atomic beam source (ABS) will be utilized to feed the storage-cell gas target in future experiments at the magnetic spectrometer ANKE. The ABS produces an intensity of (6.9±0.3)· 1016 hydrogen atoms/s in two hyperfine substates, measured with a compression tube having the dimensions of the feeding tube of the storage-cell and installed at its position. For future polarization studies and experiments with polarized internal gas targets a Lamb-shift polarimeter, built at the University of Cologne, has been installed at the ABS. First measurements of the nuclear polarization of the atomic hydrogen beam yield Pz=0.889±0.009. In addition, measurements of the degree of dissociation and of the beam profile at the position of the storage cell feeding tube will be discussed.