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HK: Physik der Hadronen und Kerne

HK 34: Instrumentation und Anwendungen V

HK 34.1: Talk

Wednesday, March 21, 2001, 16:30–16:45, A

Polarized Atomic Beam Source for ANKE at COSY-Jülich — •M. Mikirtytchiants¹, R. Brüggemann², R. Emmerich², R. Engels², H. Kleines³, V. Koptev⁴, P. Kravtsov⁴, S. Lemaitre², J. Ley², B. Lorentz¹, S. Lorenz⁵, M. Nekipelov¹, V. Nelyubin⁴, H. Paetz gen. Schieck², F. Rathmann⁵, J. Sarkadi³, H. Seyfarth¹, E. Steffens⁵, H. Ströher¹, A. Vassiliev⁴, and K. Zwoll³ — ¹Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany — ²Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany — ³Zentrallabor für Elektronik, Forschungszentrum Jülich, 52425 Jülich, Germany — ⁴High Energy Physics Dpt., St. Petersburg Nuclear Physics Institute, 188350 Gatchina, Russia — ⁵Physikalisches Institut II, Friedrich-Alexander Universität, 91058 Erlangen, Germany

The polarized atomic beam source for a storage-cell target for ANKE at COSY-Jülich has been brought to operation. Investigations of the polarized hydrogen beam intensity have been carried out under various conditions using a compression-tube setup. The maximum intensity of the beam was found to be 6.4· 10¹⁶ H atoms per second for two hyperfine states. Meanwhile first studies on the COSY beam properties have been performed with an aperture in the ANKE-target position. They will be extended with prototypes of cell tubes as soon as the new, larger, target chamber is available. For the investigations of the atomic beam polarization a Lamb-shift polarimeter, built at Universität zu Köln, has been installed.