The TrapSensor Facility: an Open-Ring 7 Tesla Penning Trap for Laser-Based Precision Experiments
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Date
2019-02-28Author
Gutiérrez Torres, Manuel Jesús
Berrocal, Joaquín
Cornejo, Juan M.
Domínguez, Francisco
Del Pozo, Jesús J.
Bañuelos, Javier
Escobedo, Pablo
Kaleja, Oliver
Rica, Raúl A.
Schmidt, Stefan
Block, Michael
Rodríguez Rubiales, Daniel
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New Journal Of Physics 21 : (2019) // Article ID 023023
Abstract
A Penning-trap facility for high-precision mass spectrometry based on a novel detection method has been built. This method consists in measuring motional frequencies of singly-charged ions trapped in strong magnetic fields through the fluorescence photons from laser-cooled Ca-40(+) ions, to overcome limitations faced in electronic single-ion detection techniques. The key element of this facility is an open-ring Penning trap coupled upstream to a preparation Penning trap similar to those used at Radioactive Ion Beam facilities. Here we present a full characterization of the trap and demonstrate motional frequency measurements of trapped ions stored by applying external radiofrequency fields in resonance with the ions' eigenmotions, in combination with time-of-flight identification. The infrastructure developed to observe the fluorescence photons from Ca-40(+) comprising the 12 laser beams and the optical system to register the image in a high-sensitive CCD sensor, has been proved by taking images of the trapped and cooled Ca-40(+) ions. This demonstrates the functionality of the proposed laser-based mass-spectrometry technique, providing a unique platform for precision experiments with implications in different fields of physics.