A timing detector with pulsed high-voltage power supply for mass measurements at CSRe
A timing detector with pulsed high-voltage power supply for mass measurements at CSRe
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DOI：
10.1016/j.nima.2014.04.031
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发表时间：
2014-04
影响因子：
1.4
通讯作者：
W. Zhang;X. Tu;X. Tu;Meng Wang;Y. Zhang;Hushan Xu;Y. Litvinov;Y. Litvinov;K. Blaum;
中科院分区：
文献类型：
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作者：
W. Zhang;X. Tu;X. Tu;Meng Wang;Y. Zhang;Hushan Xu;Y. Litvinov;Y. Litvinov;K. Blaum;
储存环中核质量测量的准确性关键取决于储存离子旋转时间的准确性。在这样的实验中，微通道板（MCP）被用作定时检测器。由于注入的次级束的大的相空间，大量的离子不能存储在环中，并且在最初的几个旋转内丢失。然而，这些离子与检测器相互作用，并可能使MCP饱和，从而使其性能恶化。为了消除这种影响，一个快速的，脉冲高压电源（PHVPS）已被采用，保持检测器关闭在最初的几个旋转。新的探测器装置已在兰州CSRe实验冷却储存环上投入运行，探测器的振幅和效率特性得到了显着改善。
Accuracy of nuclear mass measurements in storage rings depends critically on the accuracy with which the revolution times of stored ions can be obtained. In such experiments, micro-channel plates (MCP) are used as timing detectors. Due to large phase space of injected secondary beams, a large number of ions cannot be stored in the ring and is lost within the first few revolutions. However, these ions interact with the detector and can saturate the MCP and thus deteriorate its performance. In order to eliminate such effects, a fast, pulsed high-voltage power supply (PHVPS) has been employed which keeps the detector switched-off during the first few revolutions. The new detector setup was taken into operation at the Experimental Cooler-Storage-Ring CSRe in Lanzhou and resulted in a significant improvement of the detector amplitude and efficiency characteristics.