Upgrade of GSI HADES beamline in preparation for high intensity runs

  • HADES is a fixed target experiment using SIS18 heavy-ion beams. It investigates the microscopic properties of matter formed in heavy-ion, proton and pion - induced reactions in the 1-3.5 GeV/u energy regime. In 2014 HADES used a secondary pion beam produced by interaction between high-intensity nitrogen primary beam and a beryllium target. In these conditions beam losses, generated by slow extraction and beam transport to the experimental area, led to activation of the beam line elements and triggered radiation alarms. The primary beam intensity had to be reduced and the beam optics modified in order to keep radiation levels within the allowed limits. Similar beam conditions are requested by HADES experiment for upcoming run in 2018 and in the following years. Therefore, a number of measures have been proposed to improve beam transmission and quality. These measures are: additional shielding, additional beam instrumentation, modification of beam optics and increase of vacuum chambers' apertures in critical locations. The optics study and preliminary results of FLUKA simulations for optimization of location of loss detectors are presented.

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Author:Mariusz Sapinski, Plamen Boutachkov, Sanja Damjanović, Kalliopi Dermati, Carl-Michael KleffnerORCiD, Jerzy Pietraszko, Torsten Radon, Sebastian Ratschow, Stephan Reimann, Marcus Schwickert, Wilfried Sturm, Beata Walasek-Höhne
Parent Title (German):IPAC2017 = Proceedings of the 8th International Particle Accelerator Conference [Copenhagen, Denmark, 14–19 May, 2017]
Publisher:JACoW Publishing
Place of publication:Geneva
Document Type:Article
Year of Completion:2017
Year of first Publication:2017
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2022/01/27
Page Number:3
First Page:2214
Last Page:2216
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCreative Commons - Namensnennung 3.0