RT info:eu-repo/semantics/article
T1 Design, development, and scientific performance of the Raman Laser Spectrometer EQM on the 2020 ExoMars (ESA) Mission
A1 Moral Inza, Andoni Gaizka
A1 Rull Pérez, Fernando
A1 Maurice, Sylvestre
A1 Hutchinson, Ian B.
A1 Canora, Carlos P.
A1 Seoane, Laura
A1 López Reyes, Guillermo Eduardo
A1 Rodríguez Prieto, Jose Antonio
A1 Rodríguez, Pablo
A1 Ramos, Gonzalo
A1 Parot, Yann
A1 Forni, Olivier
K1 ExoMars, planetary exploration, SNR optimization, space instrument, technological development
AB The Raman Laser Spectrometer (RLS) is one of the three Pasteur Payload instruments located within the rover analytical laboratory drawer (ALD), for ESA’s Aurora exploration programme, ExoMars 2020 mission. The instrument will analyse the crushed surface and subsurface samples that are positioned below the Raman optical head by the ALD carousel. The RLS engineering and qualification model (EQM) was delivered to ESA at the end of 2017, after a wide technical and scientific test characterization campaign. The scientific campaign comprised instrument calibration and detailed evaluation of the scientific requirements and overall performance. For spectral calibration, continuous emission standard lamps (such as Hg-Ar, Ne, and Xe) were utilized, as well as Raman spectra of pure liquids typically used as standards (cyclohexane and carbon tetrachloride (CCl4)). In addition, Raman spectra of the RLS calibration target (CT), a small disc of polyethylene terephthalate (PET) were obtained at various temperatures. This target, placed inside the rover, will be used for both Instrument health checks and calibration activities throughout Mars operations. For the scientific requirements and performance evaluations, several liquid and solid samples were analysed under a wide range of ambient conditions. The obtained spectral band parameters (peak position, relative peak intensity, peak width, and peak profile) were evaluated. Also, the instrument response (in terms of SNR) was characterized at different integration times and detector operating temperatures. In this paper, we provide a description of the development, verification, functional test, and overall scientific performance of the RLS instrument developed for ExoMars. Particular attention is placed on the performance of the EQM, which is the most representative instrument, in terms of engineering and functionality, of the flight model (FM) and in addition is used for performing all the mechanical, thermal, and radiation tests necessary for space qualification (for planetary applications). The data presented and analysed here, comprise part of the overall dataset obtained during the full instrument characterization campaign conducted at INTA before and during delivery and integration of the EQM in the rover ALD at TAS-I facilities (Torino, Italy). The results obtained confirm that the full functionality and scientific performance of the RLS instrument was maintained after integration.
PB John Wiley & Sons
SN 0377-0486
YR 2019
FD 2019
LK http://uvadoc.uva.es/handle/10324/46319
UL http://uvadoc.uva.es/handle/10324/46319
LA eng
NO Journal of Raman Spectroscopy, Septiembre 2019, vol. 51, n. 9. p. 1771-1781
DS UVaDOC
RD 28-abr-2024