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Search Coil Magnetometer (SCM) CETP-Velizy Co-i’s: O.Le Contel & A.Roux

Search Coil Magnetometer (SCM) CETP-Velizy Co-i’s: O.Le Contel & A.Roux Technical Manager: B.de la Porte =>C.Coillot Lead Engineer: A.Bouabdellah Technicians: D.Alison & S.Ruocco. Science Objectives. Two types of models for substorms

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Search Coil Magnetometer (SCM) CETP-Velizy Co-i’s: O.Le Contel & A.Roux

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  1. Search Coil Magnetometer (SCM) CETP-Velizy Co-i’s: O.Le Contel & A.Roux Technical Manager: B.de la Porte =>C.Coillot Lead Engineer: A.Bouabdellah Technicians: D.Alison & S.Ruocco

  2. Science Objectives • Two types of models for substorms • In NENL model whistler modes are expected to develop and accelerate electrons at V>>Va. • In CD models waves (at F~Flhr or nFbe) are expected to disrupt the current. • SCM (together with EFI) will allow a characterization of the waves associated with Breakup • =>provide a critical test for substorm scenarios. • SCM will measure the AC B-field from 1 Hz to 4kHz, with tri-axis antennas. • SCM sensitivity is: 0.8pT/sqHz at 10Hz, and 0.02pT/sqHz at 1kHz (measured). Better than specs.

  3. SCM pre-amplifiers • Left: PA cubes and calibration unit on PCB (EM) • Right: PA box (EM) • Mass (195gr) and power (75mW) below allocation

  4. SCM antennas • 3-Axis structure and magnetic antennas (located at the end of a boom). Mass (586gr) below allocation (600gr).

  5. Summary • Ressources (mass & power) are compatible with allocation. • EM delivered. • FM currently tested in Chambon la Forêt. • Performances meet specs

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