Control and monitoring system for fusion neutron spectroscopy on the Joint European Torus
Control and monitoring system for fusion neutron spectroscopy on the Joint European Torus
复制标题
欧洲联合环面上聚变中子能谱控制和监测系统
DOI：
10.1063/1.1787934
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发表时间：
2004
影响因子：
1.6
通讯作者：
S. Popovichev
中科院分区：
文献类型：
--
作者：
M. Tardocchi;G. Gorini;D. Palma;C. Sozzi;J. Källne;S. Conroy;G. Ericsson;L. Giacomelli;W. Glasser;H. Henriksson;A. Hjalmarsson;E. Ronchi;H. Sjöstrand;M. Weiszflog;S. Popovichev
在欧洲联合环面增强计划中，一种新的控制和监测（C&M）系统正在为TOFOR和MPRu聚变中子光谱仪开发。该系统是现有MPR光谱仪C&M系统的改进，由光纤网络将可控脉冲光源分布到塑料闪烁体光谱仪中使用的所有光电倍增管上。光源为绿色Nd:LSB固态激光器，辅之以蓝色发光二极管光源。记录每个检测通道的脉冲高度分布，以将光谱仪设置为规定的工作点并监测偏差。将受控光源与放射源相补充，得到了绝对参考。本文报道了MPRu光谱仪的C&M样机设计和部件试验。结果表明，激光器和相关光学器件提供了一个可控的光脉冲，其强度覆盖了超过四个数量级的动态范围。光纤直径的选择对于实现每个MPRu探测器收集的光强度的所需稳定性和均匀性至关重要。
A new control and monitoring (C&M) system is being developed for the TOFOR and MPRu fusion neutron spectrometers within the Joint European Torus enhancement program. The system, which is an evolution of the existing C&M system of the MPR spectrometer, consists of a controlled pulsed light source distributed by an optical fiber network to all photomultiplier tubes used in the plastic scintillator based spectrometers. The light source is a green Nd:LSB solid-state laser complemented by blue light emitting diode sources. Pulse height distributions for each detection channel are recorded to set the spectrometers to prescribed working points and monitor deviations. Absolute reference is obtained complementing the controlled light source with radioactive sources. In this article we report on the C&M prototype design and component tests for the MPRu spectrometer. The results show that the laser and the associated optics provide a controlled light pulse of intensity covering a dynamic range of more than four orders of magnitude. The choice of optical fiber diameters is critical for achieving the desired stability and uniformity of the light intensity collected by each MPRu detector.