München 2006 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 21: Postersitzung

HK 21.72: Poster

Dienstag, 21. März 2006, 15:30–17:00, P

Design of a magnet for electron scattering experiments under extreme forward angles at the S–DALINAC^⋆ — •K. Zimmer, Y. Kalmykov, P. von Neumann-Cosel, A. Richter, and G. Schrieder — Institut für Kernphysik, Technische Universität

An experimental setup for electron scattering under extreme forward angles will be installed at the S–DALINAC to perform measurements at very low momentum transfer. A setup for 180^∘ electron scattering experiments has already been installed at the S–DALINAC [1]. Similar to scattering under 180^∘, the transverse kinematical factor in electron scattering dominates near 0^∘. Additionally, the cross sections of the relevant excitations under small angles are several magnitudes larger than at 180^∘. For this reason the new experimental setup for small angles represents an ideal instrument for selective measurements of transverse excitations with small angular momentum. The concept of this new setup will be presented, especially the design of the magnet for separation of the main beam and the scattered electrons [2].
C. Lüttge et al., Nucl. Instr. and Meth. A 366 (1995) 325.
K. Zimmer, Diploma thesis, TU Darmstadt (2005).
^⋆ Supported by the DFG through SFB 634.