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CML B-Dot SENSORS (Free Field)
(Radiation Hardened)

The CML (Cylindrical Moebius Loop) B-dot sensors (Models 1, 2, and 4) are small radiation hardened probes which measure the time rate-of-change of a magnetic field in free space in a gamma radiation environment.  These particular CML sensors are encapsulated in a low – Z material and are intended for use in a conductive air environment.  These probes are passive devices requiring no external power.

These sensors are cylindrical loops with one gap and the pickoff cables wired in a moebius configuration.  The voltage signal developed across the gap by the changing magnetic field is sensed in the differential mode by the pickoff cables.  The moebius configuration and the differential output provide for common mode rejection of unwanted signals generated in the cables by the gamma radiation and electric field components.  The output cables of all CML sensors exit from the curved surface of the cylinder (radial version), normal to the cylinder axis.

PERTINENT EQUATION

	Vo = = sensor output (in volts)
where
	= sensor equivalent area (in m2)
	= magnetic flux density vector (in teslas)

Data Specification Sheet