Tübingen 2003 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 18: Instrumentation und Anwendungen II

HK 18.12: Talk

Tuesday, March 18, 2003, 18:15–18:30, C

The Polarized Internal Gas Target for ANKE — •H. Seyfarth¹, L. Conin¹, R. Engels¹, A. Gussen², P. Jansen², F. Klehr², H. Kleines³, P. Kravtsov⁴, B. Lorentz¹, M. Mikirtytchiants⁴, F. Rathmann¹, J. Sarkadi¹, H. Paetz gen. Schieck⁵, W. Schmitz², E. Steffens⁶, H. Ströher¹, T. Ullrich^1,7, A. Vassiliev⁴, S. Yaschenko^6,8, and K. Zwoll³ — ¹IKP, FZJ, Germany — ²ZAT, FZJ, Germany — ³ZEL, FZJ, Germany — ⁴PNPI, Gatchina, Russia — ⁵IKP, Universität Köln — ⁶PI II, Universität Erlangen-Nürnberg, Germany — ⁷Diplomand der Fachhochschule Aachen (Jülich) — ⁸LNP, JINR, Dubna, Russia

For future few–nucleon interaction studies with polarized beams and targets at COSY–Jülich, a polarized internal storage cell gas target is currently being developed and will be implemented in the near future at ANKE. The implementation of the target constitutes a major endeavour. The powerful differential pumping system has already been installed. A new large target chamber to accomodate storage cells in the future, a new set of small–aperture horizontal and vertical beam position monitors, and a system of target–near detectors has been installed as well. The polarized atomic beam source provides beam intensities of 7.4 · 10¹⁶ atoms/s (two states). In addition, in order to determine the nuclear polarization of the target gas, a Lamb-Shift polarimeter is currently set up. Tests with prototype storage cells aim at the identification of cell dimensions well suited for the ANKE target position. The status of the project will be presented.