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A universal slow RI-beam facility at RIKEN RIBf

机译:RIKEN RIBf的通用慢速RI光束设备

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摘要

A next-generation slow radioactive nuclear ion beam facility (SLOWRI) which provides slow, high-purity and small emittance ion beams of all elements has been proposed as one of the pricipal experimental facilities at the RIKEN Rl-beam factory (RIBF). High energy radioactive ion beams from the projectile fragment separator BigRIPS are thermalized in a large gas catcher cell. The thermal ions in the gas cell are guided and extracted to vacuum by a combination of DC electric fields and inhomogeneous rf fields in the cell (rf ion guide). In the R&D works at the present RIKEN facility, an overall efficiency of ~5% for ~ 100A MeV ~8Li ion beam from the present projectile fragment separator RIPS was achieved and the dependence of the efficiency on the beam intensity was investigated. A first spectroscopy experiment at the prototype SLOWI was performed on Be isotopes.
机译:作为RIKEN R1束工厂(RIBF)的主要实验设施之一,已提出了提供所有元素的慢,高纯度和小发射率离子束的下一代慢放射性核离子束设施(SLOWRI)。弹丸碎片分离器BigRIPS产生的高能放射性离子束在大型集气室中热化。气室中的热离子通过DC电场和气室中非均匀的rf场(rf离子导向器)的组合被引导并抽至真空。在目前的RIKEN设施的研发工作中,从当前的弹丸碎片分离器RIPS获得的〜100A MeV〜8Li离子束的总效率达到了5%,并且研究了效率对束强度的依赖性。在原型SLOWI上进行的第一个光谱实验是在Be同位素上进行的。

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