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The National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University (MSU) is a user facility for rare-isotope beams, produced by projectile fragmentation at high energies and separated in-flight. ReA is a post-accelerator that accelerates 'stopped' rare-isotope beams, thermalized in a helium-gas cell, to several MeV/u for nuclear-physics experiments. ReA employs an electron-beam ion trap (EBIT) charge breeder to convert singly charged ions to highly charged ions before transport to a linear accelerator. The EBIT started on-line operation in the fall of 2015. This paper presents results of charge-breeding efficiency measurements obtained over the past two years with rare-isotope beams. Additionally, the time spread of rare-isotope ion pulses ejected from the EBIT has been increased to reduce the instantaneous rate delivered to users. Efficiencies in single charge states of more than 20% were obtained with 47K17+ and 34Ar15+. For 34Ar15+, the pulse width was spread in time up to ~50 ms. [ABSTRACT FROM AUTHOR]

S3 (Super Separator Spectrometer) is a device proposed for experiments with the very high intensity stable beams of LINAG, the superconducting linear accelerator of GANIL, which will be built in the framework of SPIRAL2. These beams, which will provide in a first phase of SPIRAL2 ions with A/q = 3, can reach intensities exceeding 100pμA for lighter ions (A < 40 – 50) depending on the final choice of the ECR (Electron Cyclotron Resonance) ion source. These unprecedented intensities open new opportunities in several physics domains, e.g. super-heavy and very-heavy nuclei, spectroscopy at and beyond the dripline, muld-nucleon transfer and deep-inelastic reactions, isomers and ground state properties and nuclear molecular resonances. An international collaboration interested in the aforementioned physics has been formed for developing technical solutions for this new instrument. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR]

This paper presents two original direct mass-measurement techniques developed at GANIL using the CSS2 and CIME cyclotrons as high-resolution mass spectrometers. The mass measurement with the CSS2 cyclotron is based on a time-of-flight method along the spiral trajectory of the ions inside the cyclotron. The atomic mass excesses of 68Se and 80Y recently measured with this technique are -53.958(246) MeV and -60.971(180) MeV, respectively. The new mass-measurement technique with the CIME cyclotron is based on the sweep of the acceleration radio-frequency of the cyclotron. Tests with stable beams have been performed in order to study the accuracy of this new mass-measurement method and to understand the systematic errors. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

Based on the “LINAG Phase 1” conceptual design, a two years detailed study on a ISOL-type facility for the production of high intensity exotic beams, named SPIRAL2, has been launched. The radioactive isotope beams are produced via the fission process, with the aim of 1013 fissions/s at least, induced in a UCx target either by fast neutrons from a C converter or by direct bombardment of fissile material. Fusion-evaporation residues, using heavy ions beams in different targets can also be produced in this facility. The driver, with an acceleration potential of 40 MV will accelerate deuterons (5 mA) and q/A =3 ions (1 mA) Even heavier ions will be possible at a later stage. The driver consists in high-performance ECR sources, an RFQ cavity and independent phase superconducting resonators. Further upgrade will be possible in the future. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]

We present the on-line production system and tests for the Phase-I of SPIRAL/GANIL (Radioactive Ion Production System with Acceleration on-Line) where exotic multicharged noble gas ion beams have been obtained with the ECRIS (Electron Cyclotron Resonance Ion Source) NANOGAN-III. A new ECRIS (MONO1000) for monocharged radioactive ions is also presented, together with the diffusion properties of different graphite targets for He and Ar isotopes. [ABSTRACT FROM AUTHOR]