Related Experiment Video
Updated: Sep 12, 2025

MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T
Published on: January 16, 2021
The Magnetic Search Coil (MSC) on the TRACERS Mission
G B Hospodarsky1, A J Carton1, R T Dvorsky1
1Department of Physics and Astronomy, University of Iowa, 203 Van Allen Hall, Iowa City, 52242 IA USA.
None:
The Magnetic Search Coil (MSC) instruments on the TRACERS mission provide the three magnetic components of the waves from ∼1 Hz to 1 kHz from two closely spaced spacecraft in low Earth orbit that pass through the magnetospheric cusp. These measurements of Alfvén and other waves help meet the TRACERS Science Objective 3: "Determine to what extent dynamic structures in the cusp are associated with temporal versus spatial reconnection". The TRACERS MSC uses a three axis, dual sensor coil system and amplifiers with current feedback to provide continuous analog outputs to the Electric Field Instrument (EFI) Electric Signal Processing (ESP) Board. The ESP digitally samples each MSC analog output channel with 16-bit resolution at 2048 samples/second and sends the digitally sampled data to the Central Data Processing Unit (CDPU). The TRACERS MSC design, calibration, and performance is described.
Related Concept Videos
Magnetic Field Lines
Magnetic field lines follow several hard-and-fast rules:
Magnetic Field Of A Current Loop
Magnetic Field of a Solenoid
Consider a solenoid with 100 turns wrapped around a cylinder of...
Magnetic Field Due to Two Straight Wires
Magnetic Susceptibility and Permeability
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
Magnetic Field due to Moving Charges
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...

