...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Space Science Reviews >The engineering radiation monitor for the radiation belt storm probes mission
【24h】

The engineering radiation monitor for the radiation belt storm probes mission

机译：辐射带风暴探测器任务的工程辐射监测器

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An Engineering Radiation Monitor (ERM) has been developed as a supplementary spacecraft subsystem for NASA's Radiation Belt Storm Probes (RBSP) mission. The ERM will monitor total dose and deep dielectric charging at each RBSP spacecraft in real time. Configured to take the place of spacecraft balance mass, the ERM contains an array of eight dosimeters and two buried conductive plates. The dosimeters are mounted under covers of varying shielding thickness to obtain a dose-depth curve and characterize the electron and proton contributions to total dose. A 3-min readout cadence coupled with an initial sensitivity of ～0.01 krad should enable dynamic measurements of dose rate throughout the 9-hr RBSP orbit. The dosimeters are Radiation-sensing Field Effect Transistors (RadFETs) and operate at zero bias to preserve their response even when powered off. The range of the RadFETs extends above 1000 krad to avoid saturation over the expected duration of the mission. Two large-area (～10 cm~2) charge monitor plates set behind different thickness covers will measure the dynamic currents of weakly-penetrating electrons that can be potentially hazardous to sensitive electronic components within the spacecraft. The charge monitors can handle large events without saturating (～3000 fA/cm~2) and provide sufficient sensitivity (～0.1 fA/cm~2) to gauge quiescent conditions. High time-resolution (5 s) monitoring allows detection of rapid changes in flux and enables correlation of spacecraft anomalies with local space weather conditions. Although primarily intended as an engineering subsystem to monitor spacecraft radiation levels, real-time data from the ERM may also prove useful or interesting to a larger community.
机译：已经开发了工程辐射监测器（ERM）作为NASA辐射带风暴探测器（RBSP）任务的补充航天器子系统。 ERM将实时监视每个RBSP航天器的总剂量和深层介电电荷。 ERM配置为代替航天器平衡质量，包含八个剂量计的阵列和两个埋入的导电板。剂量计安装在具有不同屏蔽厚度的覆盖层下，以获得剂量深度曲线，并表征电子和质子对总剂量的贡献。 3分钟的读出节奏加上约0.01 krad的初始灵敏度应该可以在整个9小时的RBSP轨道上动态测量剂量率。剂量计是辐射感应场效应晶体管（RadFET），并在零偏置下工作以即使在断电时也能保持其响应。 RadFET的范围超过1000 krad，以避免在任务的预期持续时间内出现饱和。在不同厚度的盖子后面放置两个大面积（约10 cm〜2）的电荷监测板，将测量弱渗透电子的动态电流，这些电子可能会对航天器中的敏感电子组件造成危险。电荷监测器可以处理大型事件而不会饱和（〜3000 fA / cm〜2），并提供足够的灵敏度（〜0.1 fA / cm〜2）来测量静态条件。较高的时间分辨率（5 s）监视功能可以检测通量的快速变化，并使航天器异常与当地空间天气状况相关联。尽管最初主要用作监视航天器辐射水平的工程子系统，但来自ERM的实时数据也可能对更大的社区有用或令人感兴趣。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号