Development of a New Laser Ablation Ion Source

18 Jul 2019, 14:20
Ball Room (McGill University)

Ball Room

McGill University

Thomson House 3650 McTavish Montreal, Quebec, H3A 1Y2 Canada


Tim Ratajczyk (TU Darmstadt, Institut für Kernphysik, Darmstadt, Germany)


A new laser ablation ion source is under development at the Institute for Nuclear Physics, TU Darmstadt for high-precision collinear laser spectroscopy. The design will combine the versatility of laser ablation ion production and the non-conservative cooling in Helium buffer gas, to produce a low emittance ion beam of a wide range of elements. It is based on the original idea of an RF-only ion funnel [1] using only the gas jet to transport the ablated ions, which are radially confined by RF electrodes. Additionally, this design will contain a new feature that will allow to further cool and bunch the ion beam. For this purpose, an additional RF electrode stack is placed in the next pumping stage superimposed by a DC gradient towards the exit [2]. The last electrode can be connected to a positive voltage to create a potential barrier and stop the ions to produce a narrow ion bunch. Detailed computer simulations have shown that this ion source [3] will allow us to produce various high-quality continuous and pulsed ion beams, with low transverse and longitudinal emittance. We will present the current status and first results of this project development.

[1] Victor Varentsov, A new Approach to the Extraction System Design, SHIPTRAP
Collaboration Meeting, 19 March, 2001, DOI: https://doi.org10.13140/RG.2.2.30119.55200

[2] Victor Varentsov, Proposal for a new Laser ablation ion source for LaSpec and MATS testing, NUSTAR Collaboration Meeting, 1 March, 2016, DOI: https://doi.org10.13140/RG.2.2.10904.39686

[3] T. Ratajczyk, V. Varentsov and W. Nörtershäuser, Status of a new laser ablation ion beam
source for LASPEC, GSI-FAIR SCIENTIFIC REPORT 2017, DOI: https://doi.org10.15120/GR-2018-1

Primary authors

Tim Ratajczyk (TU Darmstadt, Institut für Kernphysik, Darmstadt, Germany) Prof. Victor Varentsov (Facility for Antiproton and Ion Research in Europe (FAIR GmbH), Darmstadt, Germany; 3 Institute for Theoretical and Experimental Physics, Moscow, Russia) Mr Philipp Bollinger (TU Darmstadt, Institut für Kernphysik, Darmstadt, Germany) Mr Tim Lellinger (TU Darmstadt, Institut für Kernphysik, Darmstadt, Germany) Prof. Wilfried Nörtershäuser (TU Darmstadt, Institut für Kernphysik, Darmstadt, Germany)

Presentation Materials

There are no materials yet.
Your browser is out of date!

Update your browser to view this website correctly. Update my browser now