Hannover 2020 – scientific programme

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A: Fachverband Atomphysik

A 24: Ultracold atoms, ions, and BEC V (joint session A/Q)

A 24.3: Talk

Thursday, March 12, 2020, 11:45–12:00, f303

Status of a buffer gas cooled Low-Emittance Laser Ablation Ion Source with two RF funnels — •Tim Ratajczyk¹, Philipp Bollinger¹, Tim Lellinger¹, Victor Varentsov^2,3, and Wilfried Nörtershäuser¹ — ¹Institut für Kernphysik, TU Darmstadt — ²Facility for Antiproton and Ion Re- search 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 and for production of fine focusing beams for industrial microelectronics technologies. 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. Laser ablation in vacuum opens the possibility to produce ion beams even from transition metals or compound materials. The drawback of this technique is the high emittance of the beam. The presented ion source will counteract this drawback by using He buffer gas to stop the ions and extracting them through optimized RF funnels into high vacuum conditions.

This work is supported by BMBF 05P19RDFN1 and HIC for FAIR