Changes between Version 1 and Version 2 of TBR/UserApp/Space/EMFISIS_on_RBSP


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Timestamp:
Dec 1, 2011, 11:47:28 PM (8 years ago)
Author:
Iliyankatsarski
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  • TBR/UserApp/Space/EMFISIS_on_RBSP

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    9 The RBSP-EMFISIS investigation will focus on the important role played by magnetic fields and plasma waves in the processes of radiation belt particle acceleration and loss. EMFISIS offers the opportunity to understand the origin of important magnetospheric plasma waves as well as the evolution of the magnetic field that defines the basic coordinate system controlling the structure of the radiation belts and the storm-time ring current. [wiki:File:Emfisis_lg.jpg File:Emfisis lg.jpg]
     9The RBSP-EMFISIS investigation will focus on the important role played by magnetic fields and plasma waves in the processes of radiation belt particle acceleration and loss. EMFISIS offers the opportunity to understand the origin of important magnetospheric plasma waves as well as the evolution of the magnetic field that defines the basic coordinate system controlling the structure of the radiation belts and the storm-time ring current.
     10
     11[wiki:File:Emfisis_lg.jpg File:Emfisis lg.jpg]
     12
    1013
    1114The physics of the creation and loss of radiation belt particles is intimately connected to the electric and magnetic fields which mediate these processes. A large range of field dynamics and time scales are involved in this physics from ring current magnetic fields to microscopic kinetic interactions such as whistler-mode chorus waves with energetic electrons. To measure these key field interactions, NASA has selected the Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) on the Radiation Belt Storm Probes (RBSP). EMFISIS is an integrated set of instruments consisting of a tri-axial fluxgate magnetometer (MAG) and a Waves instrument which includes a tri-axial search coil magnetometer and measures AC electric and magnetic fields from 10 Hz to MHz frequencies. The broad frequency range of the Waves instrument enables the identification of resonances and cutoffs from Waves to achieve high cadence, accurate plasma density measurements that are essential to RBSP theory and modeling efforts. The instruments are integrated through a Central Data Processor Unit (CDPU) which provides for flexible instrument operations in both burst and survey telemetry modes that can be optimized to address the specific physics of the many radiation belt processes. The EMFISIS multi-institution team comprises a group of knowledgeable space physics investigators, both experimental and theoretical, with the requisite capability, desire, and experience to accomplish the goals of the RBSP mission to further our nation's space weather capability. In combination with the selected double probe electric field and particle investigations on RBSP, EMFISIS will provide the essential measurements necessary to open the frontier of predictive capability for the Earth's highly variable radiation belts.
     
    3134
    3235 *  Magnetic field - vector B
    33   10 Hz - 12 kHz
    34   sensitivity: 3x10-11 nT2Hz-1 @ 1 kHz
    35   3 sensors on rigid boom
     3610 Hz - 12 kHz
     37sensitivity: 3x10-11 nT2Hz-1 @ 1 kHz
     383 sensors on rigid boom
    3639 *  Electric field - spin-plane E
    37   10 Hz- 12 kHz (vector)
    38   10 kHz-400 kHz (single channel)
    39   sensitivity: 3x10-17 V2m-2Hz-1 @ 1 kHz
    40   shares booms with Electric Fields and Waves (EFW) Instrument
     4010 Hz- 12 kHz (vector)
     4110 kHz-400 kHz (single channel)
     42sensitivity: 3x10-17 V2m-2Hz-1 @ 1 kHz
     43shares booms with Electric Fields and Waves (EFW) Instrument
    4144
    4245[wiki:File:Instruments_clip_image005_sm.jpg File:Instruments clip image005 sm.jpg]
     
    4952RBSP-EMFISIS Science Investigation Objectives:
    5053
    51     * Differentiate among competing processes affecting the acceleration and transport of radiation particles
    52     * Differentiate among competing processes affecting the precipitation and loss of radiation belt particles
    53     * Quantify the relative contribution of adiabatic and non-adiabatic processes on energetic particles
    54     * Understand the effects of the ring current and other storm phenomena on radiation electrons and ions
    55     * Understand how and why the ring current and associated phenomena vary during storms
     54 * Differentiate among competing processes affecting the acceleration and transport of radiation particles
     55 * Differentiate among competing processes affecting the precipitation and loss of radiation belt particles
     56 * Quantify the relative contribution of adiabatic and non-adiabatic processes on energetic particles
     57 * Understand the effects of the ring current and other storm phenomena on radiation electrons and ions
     58 * Understand how and why the ring current and associated phenomena vary during storms
    5659
    5760RBSP-EMFISIS Instrument Suite:
     
    6467WAVES, a tri-axial search coil magnetometer and sweep frequency receiver.
    6568
    66     Waves Components:
     69Waves Components:
    6770
    68         * Magnetic field - vector B
    69           10 Hz - 12 kHz
    70           sensitivity: 3x10-11 nT2Hz-1 @ 1 kHz
    71           3 sensors on rigid boom
     71 * Magnetic field - vector B
     7210 Hz - 12 kHz
     73sensitivity: 3x10-11 nT2Hz-1 @ 1 kHz
     743 sensors on rigid boom
    7275
    73         * Electric field - spin-plane E
    74           10 Hz- 12 kHz (vector)
    75           10 kHz-400 kHz (single channel)
    76           sensitivity: 3x10-17 V2m-2Hz-1 @ 1 kHz
    77           shares booms with Electric Fields and Waves (EFW) Instrument
     76 * Electric field - spin-plane E
     7710 Hz- 12 kHz (vector)
     7810 kHz-400 kHz (single channel)
     79sensitivity: 3x10-17 V2m-2Hz-1 @ 1 kHz
     80shares booms with Electric Fields and Waves (EFW) Instrument
    7881= EMFISIS accommodation diagram =
    7982