تقرير
A method to measure the transition energy $\gamma_{t}$ of the isochronously tuned storage ring
| العنوان: | A method to measure the transition energy $\gamma_{t}$ of the isochronously tuned storage ring |
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| المؤلفون: | Chen, R. J., Yan, X. L., Ge, W. W., Yuan, Y. J., Wang, M., Sun, M. Z., Xing, Y. M., Zhang, P., Fu, C. Y., Shuai, P., Xu, X., Zhang, Y. H., Bao, T., Chen, X. C., Hu, X. J., Huang, W. J., Li, H. F., Liu, J. H., Litvinov, Yu. A., Litvinov, S. A., Mao, L. J., Wu, B., Xu, H. S., Yang, J. C., Yin, D. Y., Zeng, Q., Zhang, X. H., Zheng, W. H., Zhou, X. H., Zhou, X. |
| سنة النشر: | 2018 |
| المجموعة: | Nuclear Experiment Physics (Other) |
| مصطلحات موضوعية: | Physics - Instrumentation and Detectors, Nuclear Experiment |
| الوصف: | The Isochronous Mass Spectrometry (IMS) is a powerful technique developed in heavy-ion storage rings for measuring masses of very short-lived exotic nuclei. The IMS is based on the isochronous setting of the ring. One of the main parameters of this setting is the transition energy $\gamma_{t}$. %The transition energy $\gamma_{t}$ plays an important role in the isochronous mass spectrometry (IMS). It has been a challenge to determine the $\gamma_{t}$ and especially to monitor the variation of $\gamma_{t}$ during experiments. In this paper we introduce a method to measure the $\gamma_{t}$ online during IMS experiments by using the acquired experimental data. Furthermore, since the storage ring has (in our context) a relatively large momentum acceptance, the variation of the $\gamma_{t}$ across the ring acceptance is a source of systematic uncertainty of measured masses. With the installation of two time-of-flight (TOF) detectors, the velocity of each stored ion and its revolution time are simultaneously available for the analysis. These quantities enabled us to determine the $\gamma_{t}$ as a function of orbital length in the ring. The presented method is especially important for future IMS experiments planned at the new-generation storage ring facilities FAIR in Germany and HIAF in China. Comment: 7 pages |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.nima.2018.04.056 |
| الوصول الحر: | http://arxiv.org/abs/1811.09078Test |
| رقم الانضمام: | edsarx.1811.09078 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.nima.2018.04.056 |
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