New laser polarization line at the ISOLDE facility
New laser polarization line at the ISOLDE facility
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DOI：
10.1088/1361-6471/aa77d7
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发表时间：
2017-06
期刊：
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通讯作者：
M. Kowalska;P. Aschenbrenner;M. Baranowski;M. Bissell;W. Gins;R. Harding;H. Heylen;G. Neyens;S. Pallada;N. Severijns;P. Velten;M. Walczak;F. Wienholtz;Z. Xu;Xiaofei Yang;D. Zákoucký
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作者：
M. Kowalska;P. Aschenbrenner;M. Baranowski;M. Bissell;W. Gins;R. Harding;H. Heylen;G. Neyens;S. Pallada;N. Severijns;P. Velten;M. Walczak;F. Wienholtz;Z. Xu;Xiaofei Yang;D. Zákoucký
随着人们对放射性离子的自旋极化光束越来越感兴趣，在欧洲核子研究中心的ISOLDE设备上安装了一种新的激光自旋极化装置。该装置位于VITO束流线上，旨在将使用极化离子的几种实验技术结合起来，用于核物理学、基本相互作用、材料和生命科学的研究。2016年进行了密集的设计工作，允许安装极化线的第一阶段。在这个实验装置中，离子束可以被中和、极化并植入到电磁体内的固体样品中，该电磁体还装有β探测器，在那里可以测量核自旋极化的程度。2016年秋天，该装置投入使用了寿命较短的26Na和28Na光束，这些光束从原子基态偏振到D2线。先前观察到的β不对称程度被重现，因此光束线现在已经准备好进行第一次自旋极化放射性光束的物理实验。
Following a growing interest in spin-polarized beams of radioactive ions, a new laser spin-polarization setup has been installed at the ISOLDE facility at CERN. The setup is located at the VITO beamline which aims to bring together several experimental techniques using polarized ions allowing for studies in nuclear physics, fundamental interactions, material and life sciences. Intensive design work, which took place in 2016, allowed the installation of the first stage of the polarization line. With this experimental setup, the ion beam can be neutralized, polarized and implanted into a solid sample inside an electromagnet which also hosts β-detectors, where the degree of nuclear spin polarization can be measured. In autumn 2016 the setup was commissioned using short-lived 26Na and 28Na beams which were polarized in the D2 line from their atomic ground state. The previously observed degrees of β asymmetry were reproduced and thus the beamline is now ready for the first physics experiments with spin-polarized radioactive beams.