Stuttgart 2012 – scientific programme

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MS: Fachverband Massenspektrometrie

MS 6: Poster

MS 6.12: Poster

Tuesday, March 13, 2012, 16:30–19:00, Poster.IV

Status of the Cryogenic Storage Ring (CSR) — •Sebastian Menk¹, Arno Becker¹, Felix Berg¹, Klaus Blaum¹, Florian Fellenberger¹, Michael Froese¹, Johannes Goullon¹, Manfred Grieser¹, Claude Krantz¹, Michael Lange¹, Felix Laux¹, Roland Repnow¹, Andrey Schornikov¹, Kaija Spruck², Robert von Hahn¹, and Andreas Wolf¹ — ¹Max-Planck-Institut für Kernphysik (MPIK), 69117 Heidelberg — ²Institut für Atom- und Molekülphysik Justus-Liebig-Universität, 35392 Giessen

A novel cryogenic storage ring is currently under construction at the MPIK. By electrostatic ion optical elements, the 35 m circumference Cryogenic Storage Ring will be able to store ions at energies of up to 300 keV per charge unit without any mass limitations. The CSR consists of a cryogenic (∼5 K) beam pipe surrounded by two radiation shields (40 and 80 K) in a large outer, thermal insulation vacuum. Extreme vacuum (density ∼10³ cm⁻³) will be achieved by 2 K cryopumping as demonstrated in a prototype ion beam trap. The ion optics was completely assembled within the precision cryogenic mounting and shielding structure of the first corner. There, cooldown tests to ∼40 K were performed which confirmed the required sub-millimeter accuracy of the specially designed electrode positioning under large temperature changes. The high-voltage connections to the cryogenic electrodes were installed and breakdown tests will be reported. Based on the test results the beam pipe, electrode mounting and shielding structures are under final construction for mounting during 2012.