The future facility FAIR (Facility for Antiproton and Ion Research) with its intense beams will include the HESR ring (High Energy Storage Ring), where the PANDA experiment will be located. High energy community tries to investigate very rare reactions (production of strange baryons, formation of heavy quark systems) using quite rare projectiles like antiprotons or kaons (1,2). The beams are difficult to be produced in large amount, it becomes mandatory to avoid as much as possible to waste them. A way to recover the transmitted particles is to insert the target inside the beam pipe of a storage ring. This is the case of the experiment PANDA at FAIR, which will reach high luminosity using antiprotons, accumulated in HESR (High Energy Storage Ring), against internal targets of ( 12C) for the hypernuclear physics and of LH2 for the meson spectroscopy.

The material of the target is determined by the optimization of the hyperon production: therefore, shape and sizes plays a crucial role in minimizing the above mentioned effects. A prototype of a very thin, wire shaped target has been already designed and realized. The technique used to shape the material (12C) into a wire 3 μm thick and 10 μm wide will be described and the results of the applied tests will be reported. The calculations of the most suitable beam time structure for optimizing the hyperon production will be also presented.

(1) K.Szymanska et al., Acta Phys. Pol. B 41, 285 (2010)

(2) K. Tanida et al. Hyperfine Interact. 193, 81 (2009)

(3) F. Iazzi, Few-Body Systems, vol. 43, no.1, pp. 97 (2008)