Space Science Reviews

, Volume 141, Issue 1, pp 171-184

First online:

The THEMIS Magnetic Cleanliness Program

  • M. LudlamAffiliated withSpace Sciences Laboratory, University of California Email author 
  • , V. AngelopoulosAffiliated withSpace Sciences Laboratory, University of CaliforniaIGPP/ESS, University of California
  • , E. TaylorAffiliated withSpace Sciences Laboratory, University of California
  • , R. C. SnareAffiliated withIGPP/ESS, University of California
  • , J. D. MeansAffiliated withIGPP/ESS, University of California
  • , Y. S. GeAffiliated withIGPP/ESS, University of California
  • , P. NarvaezAffiliated withNASA/JPL
  • , H. U. AusterAffiliated withTUBS
  • , O. Le ContelAffiliated withCETP/IPSL
    • , D. LarsonAffiliated withSpace Sciences Laboratory, University of California
    • , T. MoreauAffiliated withSpace Sciences Laboratory, University of California

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The five identical THEMIS Spacecraft, launched in February 2007, carry two magnetometers on each probe, one DC fluxgate (FGM) and one AC search coil (SCM). Due to the small size of the THEMIS probes, and the short length of the magnetometer booms, magnetic cleanliness was a particularly complex task for this medium sized mission. The requirements leveled on the spacecraft and instrument design required a detailed approach, but one that did not hamper the development of the probes during their short design, production and testing phase. In this paper we describe the magnetic cleanliness program’s requirements, design guidelines, program implementation, mission integration and test philosophy and present test results, and mission on-orbit performance.


THEMIS Magnetic cleanliness Spacecraft cleanliness


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