Bochum 2018 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 52: Poster

HK 52.49: Poster

Donnerstag, 1. März 2018, 16:30–18:45, Audimax Foyer

Design and Performance of the Jet Target for MAGIX at MESA — •S. Grieser, P. Brand, D. Bonaventura, C. Hargens, and A. Khoukaz — Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany

The future electron accelerator MESA (Mainz Energy-recovering Superconducting Accelerator) at the University of Mainz will focus on low energy measurements with high precision to verify the Standard Model of particle physics. For the MAGIX experiment (MESA Gas Internal target eXperiment) MESA will provide a beam with energies up to 105 MeV with a beam current of 1 mA in the energy-recovering sector, allowing high luminosities of 10³⁵ 1/cm²s. Essential for the experiment is the jet target with highest thicknesses of 10¹⁹ atoms/cm² directly behind the nozzle which was designed, built up and set successfully into operation at the University of Münster. To realise this high thickness in combination with good vacuum conditions, the target will be operated at low temperatures in the cluster mode where a well defined beam leaves the nozzle. Therefore, investigations and measurements with a Mach-Zehnder interferometer and with different nozzle geometries and stagnation conditions were made to improve the performance of the target. The nozzles originate from an improved production process developed at the University of Münster. Additionally, first successful beam times at MAMI (MAinz MIcrotron) were performed. The production line of nozzles, the target design and the studies on the cluster beam will be presented and discussed.