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首页> 外文期刊>Advances in space research >EUV data processing methods of the Solar Auto-Calibrating EUV Spectrometers (SolACES) aboard the International Space Station
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EUV data processing methods of the Solar Auto-Calibrating EUV Spectrometers (SolACES) aboard the International Space Station

机译：国际空间站上太阳自动校准EUV光谱仪（SolACES）的EUV数据处理方法

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Context: Since 2008, the Solar Auto-Calibrating EUV Spectrometer (SolACES) experiment monitors the solar EUV radiation. SolACES is part of the SOLAR mission, a device mounted on the COLUMBUS module on the International Space Station (ISS). The SolACES device is capable of measuring the EUV radiation of the full solar disk, with three grazing incidence spectrometers, covering the spectral range from 17 to 135 nm. Issue: Degradation and ageing effects of hardware components are a major issue in the field of EUV measurements. In addition, pro-pellant pollution from ISS logistic vehicles strongly complicate the instrumental operation as well as the data evaluation. To correct these effects, two double ionization chambers have been mounted onto the device frame. These are considered as a primary radiometric detector standard. By refilling the ionization chambers, the absolute EUV flux can be measured. Efficiency changes, being a severe issue in the field of measurements of EUV radiation, can corrected via an in-situ auto-calibration. The use of this method requires a thorough understanding of electron multiplier degradation and processes inside an ionization chamber. Aims: The main focus of this paper lies on the correction of hardware ageing effects in the spectrometer readout, as well as on the usage of ionization chamber measurements for absolute calibration. Additionally, we intend to demonstrate the long term stability of the in-orbit calibration principle of EUV spectrometers with double ionization chambers. Methods: In this paper, we first briefly present the instrument and its components. Second, we list, explain, and correct various degradation effects within the spectrometer units. The core part are the adjustments between spectrometer and ionization chamber data, for calibration purposes. Results and perspectives: The proof of concept of the in-orbit calibration, via ionization chambers, is given, by intercomparison of EUV data from SolACES with other experiments, over almost one decade. The presented data can be used for further investigations in climate modelling, as well as contribute to a SSI composite.
机译：背景：自2008年以来，太阳能自动校准EUV光谱仪（SolACES）实验监视太阳能EUV辐射。 SolACES是SOLAR任务的一部分，该任务是安装在国际空间站（ISS）的COLUMBUS模块上的设备。 SolACES设备能够使用三个掠射入射光谱仪测量整个太阳盘的EUV辐射，其光谱范围从17到135 nm。问题：硬件组件的老化和老化影响是EUV测量领域的主要问题。此外，ISS后勤车辆的推进剂污染大大增加了仪器操作和数据评估的复杂性。为了纠正这些影响，已在设备框架上安装了两个双电离室。这些被认为是主要的辐射探测器标准。通过重新填充电离室，可以测量绝对EUV通量。效率变化是EUV辐射测量领域中的一个严重问题，可以通过就地自动校准进行纠正。使用此方法需要对电子倍增器的降解和电离室内的过程有透彻的了解。目的：本文的主要重点在于校正光谱仪读数中的硬件老化效应，以及使用电离室测量进行绝对校准。此外，我们打算证明具有双电离室的EUV光谱仪在轨校准原理的长期稳定性。方法：在本文中，我们首先简要介绍该仪器及其组件。其次，我们列出，解释和纠正光谱仪单元内的各种降解效果。核心部分是光谱仪和电离室数据之间的调整，以进行校准。结果与观点：近十年来，通过对来自SolACES的EUV数据与其他实验的比较，给出了通过电离室进行在轨校准的概念验证。所提供的数据可用于气候建模的进一步研究，并有助于建立SSI组合。

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