New paper published - How long does a beam survive?

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Low energy storage rings are key instruments to address some of the fundamental questions of nature. Electrostatic rings in particular were used very successfully to study the interaction of various ion beams with all different kinds of target gases, ions, electrons and light. However, at very low energies and beam intensities, many physical effects act on the stored particles at the same time and need to be analysed to understand beam stability and life time.

In a paper just published in Phys. Rev. STAB the results from a comprehensive study into the beam behaviour in such storage rings is presented. The nonlinear and long-term beam dynamics and ion kinetics are described on the examples of ELISA, the first electrostatic storage ring in the world, the Antiproton Decelerator antiproton (AD) recycler ring, a possible upgrade to the AD complex at CERN, the magnetic Test Storage Ring (TSR) at the Max Planck Institute for Nuclear Physics in Heidelberg, and the novel ultra-low energy storage ring (USR), developed by the QUASAR Group. It is shown that this model allows, for the first time, to provide a consistent explanation of beam growth and associated ion losses based on benchmarking of experimental data and at the same time to make predictions of the performance of future machines.

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'Nonlinear and long-term beam dynamics in low energy storage rings', A. Papash, A. Smirnov and C.P. Welsch, Phys. Rev. ST Accel. Beams 16, 060101 (2013)