Speaker
Description
Research on short-lived unstable nuclei (radioactive isotopes, RIs) has progressed rapidly in recent years, driven by advances in accelerator technology and in the production and separation of RIs. Consequently, nuclear reaction experiments using rare RIs far from the valley of stability have attracted increasing attention. To improve the measurement accuracy of nuclear reactions involving such rare RI beams, we propose a beam-recycling technique. In this technique, RI beams are accumulated in a heavy-ion storage ring equipped with an internal active target until a nuclear reaction occurs. The energy loss, energy straggling, and transverse angular straggling experienced by the accumulated RI beams as they pass through the active target are corrected turn by turn and particle by particle. These corrections are optimized through feedback from the internal active target, maintaining high beam quality throughout the accumulation process.
We estimated the required performance of the beam-recycling components—including the internal active target, feedback systems, and beam-correction systems—through beam dynamics simulations in a heavy-ion storage ring implementing this concept. This presentation introduces the conceptual design of the beam-recycling ring and reports the simulation results.
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