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首页> 外文期刊>Nuclear instruments and methods in physics research >New ion-optical operating modes of the BigRIPS and ZeroDegree spectrometer for the production and separation of high-quality rare isotopes beams and high-resolution spectrometer experiments
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New ion-optical operating modes of the BigRIPS and ZeroDegree spectrometer for the production and separation of high-quality rare isotopes beams and high-resolution spectrometer experiments

机译：BigRIPS和ZeroDegree光谱仪的新型离子光学操作模式，用于生产和分离高质量的稀有同位素束以及高分辨率光谱仪实验

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BigRIPS is a powerful two-stage in-flight separator for the research with exotic nuclei studied in frontier experiments since more than a decade. The ion-optical system is very versatile due to the multi-stage structure of BigRIPS combined with the ZeroDegree spectrometer or the Superconducting Ring Cyclotron (SRC). Various optical modes can be flexibly realized according to the purpose of experiments. Two categories of developments are presented here. One is a new operating mode of BigRIPS aiming at higher ion-optical resolving power. BigRIPS itself has a two-stage structure. Spatial isotope separation is made at both the first and second stages. In the standard operating mode of BigRIPS, at the second stage the two spatial separations with energy degraders are subtractive in their resolving powers. Here, we present the additive mode. With the resulting increased spatial separation power, the isotopic background can be substantially reduced. Higher ion-optical resolving powers of the first and second BigRIPS degrader stages are also investigated with the goals to reduce further the background and to yield access to new isotopes of heavier elements. The other development is a dispersion-matched system with BigRIPS for high-resolution spectrometer experiments. The BigRIPS and ZeroDegree spectrometer are presently two independent, coupled achromatic systems. A new dispersion-matched mode of BigRIPS and ZeroDegree will enable novel experiments. For high-resolution spectroscopy experiments with high-intensity light projectiles, SRC and BigRIPS can be operated as a dispersion-matched system. The described different ion-optical developments are a base for a new category of experiments exploring exotic nuclei and mesic atoms. Characteristic future experiments with these new ion-optical developments are exemplified in this report.
机译：BigRIPS是一款功能强大的两阶段飞行分离器，用于十多年来在前沿实验中研究的奇异核研究。由于BigRIPS的多级结构与ZeroDegree光谱仪或超导环回旋加速器（SRC）相结合，因此离子光学系统非常通用。根据实验目的，可以灵活地实现各种光学模式。这里介绍了两类发展。一种是BigRIPS的新工作模式，旨在实现更高的离子光学分辨能力。 BigRIPS本身具有两个阶段的结构。在第一阶段和第二阶段都进行了空间同位素分离。在BigRIPS的标准操作模式下，在第二阶段，两个带有能量衰减器的空间分隔将其分辨力相减。在这里，我们介绍加法模式。随着所产生的空间分离能力的提高，同位素本底可以大大降低。还研究了第一和第二个BigRIPS降解器级的较高的离子光学分辨能力，目的是进一步降低本底并获得对较重元素的新同位素的利用。另一项开发是使用BigRIPS的色散匹配系统，用于高分辨率光谱仪实验。 BigRIPS和ZeroDegree光谱仪目前是两个独立的耦合消色差系统。 BigRIPS和ZeroDegree的新的色散匹配模式将支持新颖的实验。对于使用高强度射弹的高分辨率光谱实验，可以将SRC和BigRIPS用作色散匹配系统。所描述的不同离子光学发展为探索外来原子核和中性原子的一类新实验奠定了基础。这些新的离子光学发展的特征性未来实验在本报告中得到了举例说明。

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