Hannover 2010 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 8: Poster

MS 8.9: Poster

Donnerstag, 11. März 2010, 16:00–18:00, Lichthof

A complementary laser system for ISOLDE-RILIS — •Sebastian Rothe1,2, Christoph Mattolat2, Bruce Marsh1, Klaus Wendt2, and Valentin Fedosseev11CERN, Geneva, Switzerland — 2Institut für Physik, Universität Mainz

The resonant laser ion source (RILIS) is a well-established tool for efficient and selective production of radioactive ion beams (RIBs) at ISOL facilities. Element selectivity is achieved by applying stepwise resonant ionization using up to three different laser wavelengths. Due to their advantages in terms of stability and reliability, an all solid-state titanium:sapphire (ti:sa) system is used or is planned to be installed at the majority of on-line facilities worldwide. Ti:sa lasers are pumped by frequency doubled Nd:YAG lasers at a repetition rate of typically 10 kHz and generate radiation in the near infrared between 690 nm and 960 nm at output powers of 3 W and a typical spectral line width of 3 GHz.

Such an all solid-state ti:sa laser system is going to be installed at the ISOLDE-RILIS, CERN alongside the well-established dye laser system. Primary objective of this complementary laser system is a reduction in the RILIS downtime during laser configuration changes for ionization of different elements requested by ISOLDE users. Secondary benefits such as better beam quality and power stability, and therefore lower maintenance during operation, are expected.

The progress of these activities at CERN will be discussed and future projects such as in-source spectroscopy and refined on-line laser surveillance will be covered.

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