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The FIELDS Instrument Suite on MMS: Scientific Objectives, Measurements, and Data Products
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2016 (English)In: Space Science Reviews, ISSN 0038-6308, E-ISSN 1572-9672, Vol. 199, no 1-4, 105-135 p.Article, review/survey (Refereed) Published
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Abstract [en]

The FIELDS instrumentation suite on the Magnetospheric Multiscale (MMS) mission provides comprehensive measurements of the full vector magnetic and electric fields in the reconnection regions investigated by MMS, including the dayside magnetopause and the night-side magnetotail acceleration regions out to 25 Re. Six sensors on each of the four MMS spacecraft provide overlapping measurements of these fields with sensitive cross-calibrations both before and after launch. The FIELDS magnetic sensors consist of redundant flux-gate magnetometers (AFG and DFG) over the frequency range from DC to 64 Hz, a search coil magnetometer (SCM) providing AC measurements over the full whistler mode spectrum expected to be seen on MMS, and an Electron Drift Instrument (EDI) that calibrates offsets for the magnetometers. The FIELDS three-axis electric field measurements are provided by two sets of biased double-probe sensors (SDP and ADP) operating in a highly symmetric spacecraft environment to reduce significantly electrostatic errors. These sensors are complemented with the EDI electric measurements that are free from all local spacecraft perturbations. Cross-calibrated vector electric field measurements are thus produced from DC to 100 kHz, well beyond the upper hybrid resonance whose frequency provides an accurate determination of the local electron density. Due to its very large geometric factor, EDI also provides very high time resolution (similar to 1 ms) ambient electron flux measurements at a few selected energies near 1 keV. This paper provides an overview of the FIELDS suite, its science objectives and measurement requirements, and its performance as verified in calibration and cross-calibration procedures that result in anticipated errors less than 0.1 nT in B and 0.5 mV/m in E. Summaries of data products that result from FIELDS are also described, as well as algorithms for cross-calibration. Details of the design and performance characteristics of AFG/DFG, SCM, ADP, SDP, and EDI are provided in five companion papers.

Place, publisher, year, edition, pages
Springer Science+Business Media B.V., 2016. Vol. 199, no 1-4, 105-135 p.
Keyword [en]
Magnetic reconnection, Magnetospheric dynamics, Magnetospheric multiscale, Electromagnetic field measurements
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-187333DOI: 10.1007/s11214-014-0109-8ISI: 000374299800005Scopus ID: 2-s2.0-84911427732OAI: oai:DiVA.org:kth-187333DiVA: diva2:929879
Note

QC 20170123

Affiliation för P-A Lindqvist är felaktig i publikationen, korrigerat 2017-01-20.

Available from: 2016-05-20 Created: 2016-05-20 Last updated: 2017-01-23Bibliographically approved

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