Actively cooled coil

A coil system, comprising:

• a plurality of pairs of planar coils stacked in a vertical direction, each pair of planar coils including:
• a first planar coil including a first outer turn;
• and
• a second planar coil including a second outer turn, the second outer turn overlapping the first outer turn and laterally offset from the first outer turn;
• and
• a plurality of pairs of thermal conductor tracks stacked in the vertical direction, each pair of thermal conductor tracks including:
• a first thermal conductor track;
• and
• a second thermal conductor track overlapping a portion of the first thermal conductor track, laterally offset from the first thermal conductor track, and overlapping the first outer turns of the plurality of pairs of planar coils, wherein:
• for each pair of planar coils, the first outer turn is separated, in the vertical direction, from the second outer turn by a first gap;
• a first pair of planar coils of the plurality of pairs of planar coils is vertically adjacent to a second pair of planar coils of the plurality of pairs of planar coils;
• the first outer turn of the first pair of planar coils is separated, in the vertical direction, from the second outer turn of the second pair of planar coils by a distance less than the first gap;
• each first thermal conductor track is separated, in a lateral direction orthogonal to the vertical direction, from a respective first outer turn by a second gap at least six times greater than the distance, the second gap being configured to increase a rate of heat transfer;
• and
• each second thermal conductor track is separated, in the lateral direction, from a respective second outer turn by a third gap at least six times greater than the distance, the third gap being configured to increase a rate of heat transfer.

A method of producing a coil system, comprising:

• producing a plurality of pairs of planar coils, each pair of planar coils including:
• a first planar coil including a first outer turn;
• and
• a second planar coil including a second outer turn overlapping the first outer turn and laterally offset from the first outer turn;
• stacking the plurality of pairs of planar coils in a vertical direction;
• forming a first comb-like structure with the first outer turns and the second outer turns of the plurality of pairs of planar coils;
• producing a plurality of pairs of thermal conductor tracks, each pair of thermal conductor tracks including:
• a first thermal conductor track;
• and
• a second thermal conductor track overlapping a portion of the first thermal conductor track, laterally offset from the first thermal conductor track, and overlapping the first outer turns of the plurality of pairs of planar coils;
• stacking the plurality of pairs of thermal conductor tracks in the vertical direction;
• forming a second comb-like structure with the plurality of pairs of thermal conductor tracks;
• and,
• engaging the first comb-like structure with the second comb-like structure;
• wherein:
• for a first pair of planar coils of the plurality of pairs of planar coils:
• the first planar coil is arranged in a first configuration;
• and
• the second planar coil is arranged in a second configuration, the second configuration created by rotating the first configuration 180 degrees around a vertical central axis;
• and
• for a second pair of planar coils of the plurality of pairs of planar coils, stacked on the first pair of planar coils:
• the first planar coil is arranged in a third configuration, the third configuration created by mirroring the first configuration on the vertical central axis;
• and
• the second planar coil is arranged in a fourth configuration, the fourth configuration created by mirroring the second configuration on the vertical central axis.