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Study of the Spacecraft Potential Under Active Control and Plasma Density Estimates During the MMS Commissioning PhaseEach spacecraft of the recently launched magnetospheric multiscale MMS mission is equipped with Active Spacecraft Potential Control (ASPOC) Instruments, which control the spacecraft potential in order to reduce spacecraft charging effects. ASPOC typically reduces the spacecraft potential to a few volts. On several occasions during the commissioning phase of the mission, the ASPOC instruments were operating only on one spacecraft at a time. Taking advantage of such intervals, we derive photoelectron curves and also perform reconstructions of the uncontrolled spacecraft potential for the spacecraft with active control and estimate the electron plasma density during those periods. We also establish the criteria under which our methods can be applied.
Document ID
20170003505
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Andriopoulou, M. (Space Research Inst. Graz, Austria)
Nakamura, R. (Space Research Inst. Graz, Austria)
Torkar, K. (Space Research Inst. Graz, Austria)
Baumjohann, W. (Space Research Inst. Graz, Austria)
Torbert, R. B. (New Hampshire Univ. Durham, NH, United States)
Lindqvist, P.-A. (Royal Inst. of Tech. Stockholm, Sweden)
Khotyaintsev, Y. V. (Swedish Inst. of Space Physics Uppsala, Sweden)
Dorelli, John Charles (NASA Goddard Space Flight Center Greenbelt, MD United States)
Burch, J. L. (Southwest Research Inst. San Antonio, TX, United States)
Russell, C. T. (California Univ. Los Angeles, CA, United States)
Date Acquired
April 17, 2017
Publication Date
May 31, 2016
Publication Information
Publication: Geophysical Research Letters
Volume: 43
Issue: 10
ISSN: 0094-8276
Subject Category
Plasma Physics
Instrumentation and Photography
Report/Patent Number
GSFC-E-DAA-TN41289
Funding Number(s)
CONTRACT_GRANT: ASAP-FFG-847969
CONTRACT_GRANT: NNG04EB99C
CONTRACT_GRANT: ASF-FWF-I2016-N20
Distribution Limits
Public
Copyright
Other