Author: Paustian, P.
Paper Title Page
THPH30
Instrumentation for Source-based Calibration of Space Instruments using Synchrotron Radiation at the Metrology Light Source (MLS)  
 
  • J. Lubeck, R. Fliegauf, R. Klein, S. Kroth, P. Paustian, M. Richter, R. Thornagel
    PTB, Berlin, Germany
 
  PTB has been involved in the calibration of many space-based instruments which often require a calibration for the absolute measurement of radiometric quantities. Based on SR, PTB can perform these absolute measurements traceable to the primary national standards. Over the past decades, PTB has performed calibrations for numerous space missions within scientific co-operations and has become an important partner [1]. Dedicated instrumentation in the PTB laboratory at the MLS has been set up for that purpose: A facility for the calibration of radiation transfer sources in the 7 nm to 400 nm spectral range [2], traceable to the MLS as primary SR source standard, is in operation. Also an existing VUV transfer calibration source [3] was upgraded to cover the extended spectral range from 16 nm to 350 nm. Moreover, a large vacuum vessel is available at the MLS, which allows the handling of complete space instruments, opening up the way for calibration of space instruments directly to the primary source standard MLS. By choosing an appropriate electron beam current or electron beam energy, the spectral radiant intensity and spectral shape can be adjusted to best suit the calibration task.
[1] R. Klein et al., J. Astron. Telesc. Instrum. Syst. 2(4), 044002 (2016).
[2] R. Thornagel et al., Rev. Sci. Instrum. 86, 013106, (2015).
[3] J. Hollandt et al., Metrologia 30, 381 (1993).
 
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