Pole insert for cyclotron
AssigneeIon Beam Applications S.A.
InventorsMichel Abs, Szymon Zaremba
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a magnet pole for an isochronous sector-focused cyclotron having hill and valley sectors alternatively distributed around a central axis, Z, each hill sector having an upper surface bounded by four edges: an upper peripheral edge, an upper central edge, a first and a second upper lateral edges. The upper surface of at least one hill sector may further include: a recess extending over a length between a proximal end and a distal end along a longitudinal axis intersecting the upper peripheral edge and the upper central edge. The recess may be separate from the first and second upper lateral edges over at least 80% of its length, and a pole insert having a geometry fitting in the recess may be positioned in, and reversibly coupled to the recess.
Claims19
A magnet pole for use in a cyclotron, comprising:
- at least three hill sectors, each associated with a magnetic field;
- and
- a same number of valley sectors alternatively distributed around a central axis, where each valley sector is associated with a magnetic field, where the magnetic fields of the hill sectors are stronger than the magnetic fields of the valley sectors,
- each hill sector comprising an upper surface defined by:
- an upper peripheral edge, said upper peripheral edge being bounded by a first and a second upper distal ends, and being defined as the edge of the upper surface located furthest from the central axis,
- an upper central edge, said upper central edge being bounded by a first and a second upper proximal ends and being defined as the edge of the upper surface located closest from the central axis,
- a first upper lateral edge connecting the first upper distal end and first upper proximal end, and
- a second upper lateral edge connecting the second upper distal end and second upper proximal end,
- wherein the upper surface of at least one hill sector further comprises:
- a recess extending over a length between a proximal end and a distal end along a longitudinal axis intersecting the upper peripheral edge and the upper central edge, said recess being separate from the first and second upper lateral edges over at least 80% of its length, and
- a pole insert having a geometry fitting in said recess and being positioned in, and reversibly coupled to, said recess.
Dependencies are inferred from the claim text.