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Development of High Cost-performance High-voltage Supply/Monitor/Control for Imaging Detector

开发用于成像探测器的高性价比高压电源/监视/控制

基本信息

批准号：
11640253
负责人：
ISHIKAWA Fumio
金额：
$ 2.24万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11640253/
关键词：
High-voltage Supply Monitor Control Imaging Device Photo-multiplier

项目摘要

There has been a significant progress on observation method using imaging detector in the field of cosmic ray research. In may cases of cosmic ray research projects, they install an array matrix of photo-multipliers (PMTs) in their imaging camera devices on the focus plane of the potical system as basic components. In these cases, they need to supply and distribute high-voltage onto hundreds of PMTs in each camera in order to keep the gain of camera uniform and stable. The stability of high-voltage supply can contribute to the determination precision of primary energies of cosmic rays. One can solve the problem if he keeps monitoring each supplied voltage in an online way and feedback the results to stabilize the total gain of each PMT. The cost-performance is important because of the large number of supply channels too. To fulfill the above basic requirements, we determine the goals of our high-voltage power supply/monitor/control system at the beginning of this development studies as follows:Output voltage dynamic range: 0〜1100VSetting resolution: Less than 1VMonitoring resolution: Less than 1VMax. supply current to PMT: 0.5 mARipple P-P 1OmVMass production cost: 3000yen/chWe have done the R＆D and the achievements are listed as follows:Non-linearity: <0.6V (Boss for setting and monitoring)Voltage offset ch-by-ch deviation <0.12VTemperature dependence <0.01 V/℃Further more, we have recognized that the present mass production cost estimate is 3,800yen/ch totally including high-voltage supplies, distribution, monitor, and control systems. We can conclude that the goals set at the beginning has been almost perfectly achieved on the performance and cost aspects.

利用成像探测器的观测方法在宇宙射线研究领域取得了重大进展。在许多宇宙射线研究项目中，他们在他们的成像相机设备中安装了一个光电倍增器阵列矩阵（pmt），作为政治系统的焦平面上的基本组件。在这些情况下，他们需要在每个摄像机的数百个pmt上提供和分配高压，以保持摄像机的增益均匀和稳定。高压电源的稳定性可以提高宇宙射线一次能量的测定精度。如果以在线方式持续监测每个供电电压并反馈结果以稳定每个PMT的总增益，则可以解决这个问题。由于供货渠道众多，所以性价比也很重要。为了实现上述基本要求，我们在开发研究之初确定了高压电源/监控/控制系统的目标如下：输出电压动态范围：0 ~ 1100v设置分辨率：小于1v监控分辨率：小于1VMax。对PMT的供电电流：0.5 mARipple P-P 1omv量产成本：3000日元/小时。我们已经进行了研发，并取得了如下成果：非线性：<0.6V（设定和监控的Boss）电压偏移-每节偏差<0.12V温度依赖性<0.01 V/℃。此外，我们已经认识到目前的量产成本估计为3,800日元/小时，包括高压电源，配电，监控和控制系统。我们可以得出结论，在性能和成本方面，一开始设定的目标已经几乎完美地实现了。