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The ChemCam Instrument Suite on the Mars Science Laboratory (MSL) Rover: Body Unit and Combined System Tests

2012; Springer Science+Business Media; Volume: 170; Issue: 1-4 Linguagem: Inglês

10.1007/s11214-012-9902-4

1572-9672

R. C. Wiens, S. Maurice, B. L. Barraclough, M. Saccoccio, Walter Barkley, J. F. Bell, Steve Bender, John D. Bernardin, D. L. Blaney, J. G. Blank, M. Bouyé, N. T. Bridges, Nathan Bultman, Phillippe Caïs, Robert C. Clanton, B. C. Clark, S. M. Clegg, A. Cousin, David A. Cremers, Alain Cros, Lauren DeFlores, D. Delapp, Robert Dingler, C. d’Uston, M. D. Dyar, Tom Elliott, Don Enemark, C. Fabre, Mike Flores, O. Forni, O. Gasnault, Thomas Hale, Charles Hays, Ken Herkenhoff, Ed Kan, L. E. Kirkland, Driss Kouach, David Landis, Y. Langevin, N. Lanza, Frank LaRocca, J. Lasue, Joseph Latino, D. Limonadi, C. A. Lindensmith, Cynthia Little, N. Mangold, G. Manhès, P. Mauchien, Christopher P. McKay, E. Miller, Joe Mooney, R. V. Morris, Leland Morrison, Tony Nelson, H. E. Newsom, A. Ollila, Melanie N. Ott, L. Parès, R. Pérez, Franck Poitrasson, Cheryl Provost, Joseph W. Reiter, T. Roberts, Frank Romero, V. Sautter, Steven Salazar, John J. Simmonds, R. Stiglich, S. A. Storms, Nicolas Striebig, J.-J. Thocaven, Tanner Trujillo, Mike Ulibarri, D. T. Vaniman, Noah Warner, Rob Waterbury, Robert Whitaker, James Witt, B.G. Wong-Swanson,

Atmospheric and Environmental Gas Dynamics

The ChemCam instrument suite on the Mars Science Laboratory (MSL) rover Curiosity provides remote compositional information using the first laser-induced breakdown spectrometer (LIBS) on a planetary mission, and provides sample texture and morphology data using a remote micro-imager (RMI). Overall, ChemCam supports MSL with five capabilities: remote classification of rock and soil characteristics; quantitative elemental compositions including light elements like hydrogen and some elements to which LIBS is uniquely sensitive (e.g., Li, Be, Rb, Sr, Ba); remote removal of surface dust and depth profiling through surface coatings; context imaging; and passive spectroscopy over the 240–905 nm range. ChemCam is built in two sections: The mast unit, consisting of a laser, telescope, RMI, and associated electronics, resides on the rover’s mast, and is described in a companion paper. ChemCam’s body unit, which is mounted in the body of the rover, comprises an optical demultiplexer, three spectrometers, detectors, their coolers, and associated electronics and data handling logic. Additional instrument components include a 6 m optical fiber which transfers the LIBS light from the telescope to the body unit, and a set of onboard calibration targets. ChemCam was integrated and tested at Los Alamos National Laboratory where it also underwent LIBS calibration with 69 geological standards prior to integration with the rover. Post-integration testing used coordinated mast and instrument commands, including LIBS line scans on rock targets during system-level thermal-vacuum tests. In this paper we describe the body unit, optical fiber, and calibration targets, and the assembly, testing, and verification of the instrument prior to launch.