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US 12,159,751 B2Granted
Two-period inverter, associated method, device and installation
AssigneeSynchrotron Soleil
InventorsOlivier Marcouille, Arnaud Mary, Marie-Emmanuelle Couprie, Keihan Tavakoli
Life of this patent
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Abstract
A two-period inverter, including a series of permanent magnets with a spatial periodicity of λ0 or (2n+1)λ0 or 2nλ0 along a longitudinal axis Y and first moving apparatus arranged to modify along the axis Y, with respect to a reference position along the axis Y, the relative position of the first and second series, which move as one, with respect to the position of the third and fourth series, which move as one, by a distance (2n+1)λ0/2 or (2n−1)λ0/2, so that the inverter is placed in an offset position along the axis Y is discussed.
Claims22
A two-period undulator, comprising:
- a vacuum chamber extending along a longitudinal axis Y;
- four series of permanent magnets installed at regular intervals along the axis Y, including a first, second, third and fourth series,
- these four series and the vacuum chamber being superposed, along an axis Z of the undulator perpendicular to the longitudinal axis Y, in the following successive order:
- first series, second series, vacuum chamber, third series, fourth series,
- these four series comprising:
- the first series of permanent magnets according to a spatial periodicity respectively of (2n+1)λ0 or 2nλ0 along the longitudinal axis Y, where n is a positive integer, and where λ0 is the spatial periodicity of the second series along the longitudinal axis, each period of the first series comprising N1 permanent magnets successively along the axis Y, the magnetization of which rotates stepwise by 360/N1 degrees in a first direction about an axis X of the undulator perpendicular to the axes Y and Z;
- the second series of permanent magnets according to a spatial periodicity of λ0 along the longitudinal axis, each period of the second series comprising N2 permanent magnets successively along the axis Y, the magnetization of which rotates stepwise by 360/N2 degrees in a second direction about the axis X;
- the third series of permanent magnets according to a spatial periodicity of λ0 along the longitudinal axis, each period of the third series comprising N3 permanent magnets successively along the axis Y, the magnetization of which rotates stepwise by 360/N3 degrees in a third direction, preferably opposite to the second direction, about the axis X;
- and
- the fourth series of permanent magnets according to a spatial periodicity respectively of (2n+1)λ0 or 2nλ0 along the longitudinal axis Y, each period of the fourth series comprising N4 permanent magnets successively along the axis Y, the magnetization of which rotates stepwise by 360/N4 degrees in a fourth direction, preferably opposite to the first direction, about the axis X,
- the undulator also comprising first displacement means arranged to alter along the axis Y, with respect to a reference position along the axis Y, the relative position of the first and second series jointly with respect to the position of the third and fourth series jointly, by a distance respectively of (2n+1)λ0/2 or (2n−1)λ0/2, such that the undulator is located in an offset position along the axis Y.
8 more elements
A method implemented by means of a two-period undulator, said undulator comprising:
- a vacuum chamber extending along a longitudinal axis Y;
- and
- four series of permanent magnets installed at regular intervals along the axis Y, including a first, second, third and fourth series,
- these four series and the vacuum chamber being superposed, along an axis Z of the undulator perpendicular to the longitudinal axis Y, in the following successive order:
- first series, second series, vacuum chamber, third series, fourth series, these four series comprising:
- the first series of permanent magnets according to a spatial periodicity respectively of (2n+1)λ0 or 2nλ0 along the longitudinal axis Y, where n is a positive integer, each period of the first series comprising N1 permanent magnets successively along the axis Y, the magnetization of which rotates stepwise by 360/N1 degrees in a first direction about an axis X of the undulator perpendicular to the axes Y and Z;
- the second series of permanent magnets according to a spatial periodicity of λ0 along the longitudinal axis, each period of the second series comprising N2 permanent magnets successively along the axis Y, the magnetization of which rotates stepwise by 360/N2 degrees in a second direction about the axis X;
- the third series of permanent magnets according to a spatial periodicity of λ0 along the longitudinal axis, each period of the third series comprising N3 permanent magnets successively along the axis Y, the magnetization of which rotates stepwise by 360/N3 degrees in a third direction, preferably opposite to the second direction, about the axis X;
- and
- the fourth series of permanent magnets according to a spatial periodicity respectively of (2n+1)λ0 or 2nλ0 along the longitudinal axis Y, each period of the fourth series comprising N4 permanent magnets successively along the axis Y, the magnetization of which rotates stepwise by 360/N4 degrees in a fourth direction, preferably opposite to the first direction, about the axis X,
- a displacement of all or part of the series, by first displacement means, so as to alter along the axis Y, with respect to a reference position along the axis Y, the relative position of the first and second series jointly with respect to the position of the third and fourth series jointly, by a distance respectively of (2n+1)λ0/2 or (2n−1)λ0/2, such that the undulator is located in an offset position along the axis Y.
8 more elements
Dependencies are inferred from the claim text.