Rostock 2019 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 14: Precision Spectroscopy of atoms and ions IV

A 14.7: Vortrag

Mittwoch, 13. März 2019, 12:00–12:15, S HS 2 Physik

Development of a Low-Emittance Laser Ablation Ion Source — •Tim Ratajczyk¹, Philipp Bollinger¹, Tim Lellinger¹, Victor Varentsov^2,3, and Wilfried Nörtershäuser¹ — ¹Institut für Kernphysik, TU Darmstadt — ²Facility for Antiproton and Ion Research in Europe (FAIRGmbH), Darmstadt — ³Institute for Theoretical and ExperimentalPhysics, Moscow, Russia

Ion sources of low-emittance are of interest in many applications of experimental low-energy physics, for example as ion sources for collinear laser spectroscopy or ion trap experiments, or as ion sources for accelerators. Often, surface ion sources are used due to their simple construction and easiness of operation. However, they can only deliver a very small range of elements, mostly alkaline and alkaline earth ions and a few other species. We are developing a more versatile ion source based on ion creation by laser ablation inside a helium buffer gas cell and extraction through optimized RF funnels. The design is based on a RF-only ion funnel design, but extended by a second compact original RF-funnel that allows for bunching of the beam and even better performance. We expect a supreme ion beam quality that will first being studied by collinear laser spectroscopy to determine its longitudinal emittance and present the current status of the buffer gas cell, the extraction funnels and a compact collinear laser spectroscopy design.