EP3189715B1 - Einstellbarer magnetischer multipol - Google Patents
Einstellbarer magnetischer multipol Download PDFInfo
- Publication number
- EP3189715B1 EP3189715B1 EP15766410.3A EP15766410A EP3189715B1 EP 3189715 B1 EP3189715 B1 EP 3189715B1 EP 15766410 A EP15766410 A EP 15766410A EP 3189715 B1 EP3189715 B1 EP 3189715B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- permanent magnet
- rotation
- peripheral
- central point
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005405 multipole Effects 0.000 title claims description 70
- 230000002093 peripheral effect Effects 0.000 claims description 88
- 239000003302 ferromagnetic material Substances 0.000 claims description 46
- 230000005415 magnetization Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- 230000005291 magnetic effect Effects 0.000 description 30
- 240000008042 Zea mays Species 0.000 description 6
- 229910001172 neodymium magnet Inorganic materials 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 229940082150 encore Drugs 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
- H05H7/04—Magnet systems, e.g. undulators, wigglers; Energisation thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0273—Magnetic circuits with PM for magnetic field generation
- H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0273—Magnetic circuits with PM for magnetic field generation
- H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
- H01F7/0284—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles using a trimmable or adjustable magnetic circuit, e.g. for a symmetric dipole or quadrupole magnetic field
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
- H05H7/04—Magnet systems, e.g. undulators, wigglers; Energisation thereof
- H05H2007/043—Magnet systems, e.g. undulators, wigglers; Energisation thereof for beam focusing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
- H05H7/04—Magnet systems, e.g. undulators, wigglers; Energisation thereof
- H05H2007/046—Magnet systems, e.g. undulators, wigglers; Energisation thereof for beam deflection
Definitions
- the present invention relates to a magnetic multi-pole. It also relates to a method of adjusting such a multi-pole.
- Such a device makes it possible, for example, but in a nonlimiting manner, to provide an adjustable magnetic multi-pole with a high magnetic field gradient and high compactness.
- the field of the invention is preferably, but not limited to, that of magnetic fields for particle accelerator.
- a plasma laser acceleration system delivers beams with high divergence that must be contained at the output of a generation chamber, requiring the use of a magnetic multi-pole.
- DiMarco's article describes an adjustable quadrupole. The adjustment is made by several rotating magnets.
- the object of the present invention is to propose a new multi-pole for solving at least one of these problems.
- Another object of the present invention is to propose a method for adjusting such a multi-pole.
- Peripheral permanent magnets are preferably N in number.
- Each peripheral permanent magnet may be provided with a screen of ferromagnetic material, preferably such that the axis of rotation of each peripheral permanent magnet is located on a segment connecting the screen of this peripheral permanent magnet and the central point.
- the N permanent magnet parts, the N parts made of ferromagnetic material, and the peripheral permanent magnets are preferably held inside the same support provided, around the central point, with at least one hollow between two of the magnets. permanent devices.
- N is preferably greater than or equal to 4.
- the N permanent magnet portions can be grouped together by a pair of permanent magnet parts, each pair of permanent magnet parts preferably comprising two permanent magnet parts located in the plane of section at symmetrical locations. report to the central point.
- Each pair of permanent magnet portions preferably comprises two permanent magnet portions having opposing magnetizations.
- the N parts made of ferromagnetic material may be grouped by a pair of ferromagnetic material parts, each pair of ferromagnetic material parts preferably comprising two parts of ferromagnetic material located in the plane of section, at locations symmetrical with respect to the central point.
- the axes of rotation of the peripheral permanent magnets may be distributed in the plane of section on a circle centered on the central point.
- a connecting segment in the plane of section, connecting the axis of rotation of this peripheral permanent magnet and the central point can pass through one (preferably a single) of the N parts of ferromagnetic material.
- the connecting segment of each peripheral permanent magnet preferably passes through a ferromagnetic material part different from the ferromagnetic material parts traversed by the connecting segments of the other peripheral permanent magnets.
- the N peripheral permanent magnets may be grouped by pairs of peripheral permanent magnets, each pair of peripheral permanent magnets preferably comprising two peripheral permanent magnets located in the plane of section at locations symmetrical with respect to the central point.
- the rotation of at least one of the peripheral permanent magnets may comprise a rotation of all the peripheral permanent magnets around their axis of rotation, preferably at the same angular value of rotation.
- Two peripheral permanent magnets of the same pair preferably rotate in the same direction of rotation.
- variants of the invention comprising only a selection of characteristics described or illustrated subsequently isolated from the other characteristics described or illustrated (even if this selection is isolated within a sentence including these other characteristics), if this selection of features is sufficient to confer a technical advantage or to differentiate the invention from the state of the prior art.
- This selection comprises at least one preferably functional characteristic without structural details, and / or with only a part of the structural details if this part alone is sufficient to confer a technical advantage or to differentiate the invention from the state of the art. earlier.
- the description will be made by default in the section plane 14, but the structure of the multi-pole 1 is identical by translation in several (more precisely all) cutting planes parallel to the section plane 14, it is in several (or all) section planes perpendicular to the X axis of the first end 16 to the second end 17 of the multi-pole 1.
- the first magnetic multi-pole embodiment 1 comprises N permanent magnet portions 2 arranged, according to the section plane 14, around a central point 3.
- the central point 3 is in the center of a hollow central zone 21.
- Each permanent magnet part 2 comprises only one single permanent magnet whose magnetization (tangent to a circle centered on the central point 3) is illustrated by an arrow 20, the tip of each arrow 20 indicating the magnetic north pole of this magnet.
- the magnetization of a permanent magnet is the magnetic moment per unit volume of this magnet.
- N is an integer positive integer number greater than or equal to 2.
- N is preferably greater than or equal to 4 (but one could also implement a dipole).
- N 4, that is to say that the multi-pole 1 is a quadripole.
- the first embodiment of magnetic multi-pole 1 further comprises N parts (referenced 4 in the figures) made of non-magnetized ferromagnetic material (ie not including a permanent magnet, and preferably no electromagnet either), arranged , according to the sectional plane 14, around the central point 3.
- N parts referenced 4 in the figures
- non-magnetized ferromagnetic material ie not including a permanent magnet, and preferably no electromagnet either
- the permanent magnet parts 2 and the parts made of ferromagnetic material 4 are contained in the section plane 14 in an annular zone 5.
- the permanent magnet parts 2 and the ferromagnetic material parts 4 do not protrude from the annular zone 5.
- the annular zone 5 is centered on the central point 3.
- the annular zone 5 is delimited by two concentric circles 36, 37 (shown in bold dashed lines in the figures), centered on the central point 3.
- each of the N permanent magnet parts 2 has a surface 22 (at a distance d1 from the central point 3, d1 being identical for all the permanent magnet parts 2) for which none of the N parts made of ferromagnetic material 4 is between this surface 22 and the central point 3.
- each of the N parts made of ferromagnetic material 4 has a surface 24 (at a distance d2 from the central point 3, d2 being identical for all parts made of ferromagnetic material 4) for which none of the N permanent magnet parts 2 are between this surface 24 and the central point 3.
- Each permanent magnet part 2 makes it possible to channel the magnetic field and to avoid disturbing the quality of the magnetic field at center 3 of multi-pole 1 and the operation of nearby equipment.
- the first embodiment of multi-magnetic pole 1 further comprises peripheral permanent magnets 6 adjustment.
- each peripheral permanent magnet 6 has a cylinder shape extending along the axis X, that is to say perpendicularly to the plane of section 14.
- Each peripheral permanent magnet 6 is rotatably mounted around an axis of rotation 7 which is specific to it (ie which is different from the axis of rotation of the other peripheral magnets 6).
- Each axis of rotation 7 is located, in the plane of section 14, beyond the annular zone 5 with respect to the central point 3, that is to say further from the central point 3 than the annular zone 5.
- the annular zone 5 does not cover (even partially) any of the peripheral permanent magnets 6.
- Each axis of rotation 7 is perpendicular to the section plane 14.
- each peripheral permanent magnet 6 (this magnetization being perpendicular to the axis of rotation 7 of this peripheral magnet 6 and being illustrated by an arrow 60, the tip of the arrow 60 illustrating a magnetic north pole of this peripheral magnet 6 ) is contained in the cutting plane 14.
- each permanent magnet portion 2 (illustrated by an arrow 20, the tip of each arrow 20 illustrating a magnetic north pole of this portion 2) is contained in the plane of section 14.
- the axes of rotation 7 of the peripheral permanent magnets 6 are distributed, in the plane of section 14, on a circle 12 centered on the central point 3 and surrounding the annular zone 5.
- Peripheral permanent magnets 6 are N.
- each peripheral permanent magnet 6 is situated on a segment 9 connecting the screen 8 of this peripheral permanent magnet 6 and the central point 3.
- the N permanent magnet parts 2, the N ferromagnetic material parts 4, the peripheral permanent magnets 6 and the screens 8 are held inside the same support 10 provided, around the central point 3 along the circle 22, at least one hollow 11 between two of the peripheral permanent magnets 6. This allows the passage of a laser beam 23 to the axis 25 perpendicular to the cutting plane 14 and passing through the central point 3.
- the support 10 is made of aluminum.
- the permanent magnet portions 2 are fixed and non-movable with respect to the support 10.
- Each permanent magnet 6 is free to rotate 360 ° about its axis 7 within the support 10.
- the parts 2 and 4 are held between the support 10 and a pipe 34.
- the pipe 34 is located between the parts 2, 4 and the central point 3.
- the pipe 34 is in contact with each of the parts 2, 4.
- the pipe 34 is copper. This pipe 34 can convey the image current created by the passage of the electron beam 32 and protects the parts 2 against a risk of overheating.
- the N permanent magnet parts 2 are grouped together by pairs of permanent magnet parts 2, each pair 2a or 2b of permanent magnet parts 2 comprising two localized permanent magnet parts 2, in the plane of section 14, at symmetrical locations by report to central point 3.
- Each pair 2a or 2b of permanent magnet parts 2 comprises two permanent magnet parts 2 having magnetizations 20 of opposite directions, and preferably of the same value (with a difference in value of plus or minus 1% with respect to the largest of the two values within the pair, and of the parallel directions at plus or minus 1 °).
- the N parts of ferromagnetic material 4 are grouped together by a pair of ferromagnetic material parts, each pair 4a or 4b of parts made of ferromagnetic material 4 comprising two parts made of ferromagnetic material 4 located in the plane of section 14 at symmetrical locations relative to at the central point 3.
- each peripheral permanent magnet 6 passes through a part of ferromagnetic material 4 different from the ferromagnetic material parts 4 traversed by the connecting segments 13, 13b of the other peripheral permanent magnets 6.
- the N peripheral permanent magnets 6 are grouped together by pairs of peripheral permanent magnets, each pair 6a or 6b of peripheral permanent magnets comprising two peripheral permanent magnets 6 located, in the plane of section, at locations symmetrical with respect to the central point 3 .
- the parts 2 and 4 of the multi-pole 1 are fixed in the center of the support 10 made of aluminum, itself secured to a box 15 of square shape illustrated on the figure 5 .
- the multi-pole 1 comprises N motors 26, each motor 26 ensuring the rotational movement of one of the peripheral magnets 6 typically via a belt 27.
- the housing 15 has openings 28, 29 which allow the passage of different laser beams 23 participating in an experiment without disturbing the operation of the multi-pole 1.
- the multi-pole 1 is placed on a mechanical support via two micrometric plates 30, 31 which make it possible to adjust the magnetic center 3, 25 of the multi-pole 1 in two directions (horizontal and vertical) with respect to the axis of the beam of electrons 32 which therefore circulates ideally along an axis perpendicular to the plane of section 14 and passing through the central point 3.
- a control system (not shown) allows to control and control the multi-pole 1 from outside of a vacuum chamber 33.
- the vacuum chamber 33 is illustrated on the figure 6 .
- This vacuum chamber may comprise several casings 15 arranged in series (three on the figure 6 ), each housing 15 comprising its multi-pole 1 and being equipped with its plates 30, 31.
- the length L of the multi-pole is 100 mm along the axis X, that is to say perpendicular to the plane of section 14.
- the figure 8 indicates several dimensions in millimeters (mm).
- the multi-pole 1 is an extremely compact magnetic system with a support section 10 of 9x9 cm 2 (in the plane of section 14) and a length (along the axis X, perpendicular to the section plane 14) of 10 cm.
- the throat circle (diameter of the central zone 21 plus the pipe 34) is 12 mm.
- At least one of the peripheral permanent magnets 6 is rotated about its axis of rotation 7.
- Each permanent magnet 6 is free to rotate 360 ° about its axis 7.
- the rotation of at least one of the peripheral permanent magnets 6 comprises a rotation of all the peripheral permanent magnets 6 about their axis of rotation 7 preferably according to the same angular value of rotation.
- Two peripheral permanent magnets 6 of the same pair 6a or 6b rotate in the same direction of rotation (clockwise or counterclockwise). Any sequence of two peripheral permanent magnets 6 whose axes of rotation 7 are successive, in the plane of section 14 along a closed loop 12 surrounding the central point 3, rotate in opposite directions of rotation (hourly or counterclockwise) .
- the rotation of the peripheral magnets 6 makes it possible to add or subtract, to the fixed part of the magnetic field created by the permanent magnet parts 2, a quadrupole component, which makes it possible to vary the quadrupole gradient by approximately 50%.
- FIG 9 is a sectional view of a second embodiment of multi-pole according to the invention, which will be described only for its differences from the first embodiment of multi-pole according to the invention.
- each permanent magnet part 2 comprises several permanent magnets (two on the figure 9 ) having different directions of magnetization (all tangent to a circle centered on the central point 3) illustrated by arrows 20a, 20b, the tip of each arrow 20a, 20b indicating the magnetic north pole of each permanent magnet of each part 2 permanent magnet.
- the figure 10 is a sectional view of a third embodiment of multi-pole according to the invention, which will be described only for its differences with respect to the first embodiment of multi-pole according to the invention.
- each permanent magnet part 2 comprises several permanent magnets (two on the figure 9 ) having different directions of magnetization (all tangent to a circle centered on the central point 3) illustrated by arrows 20a, 20b, the tip of each arrow 20a, 20b indicating the magnetic north pole of each permanent magnet of each part 2 permanent magnet.
- each magnet of a fixed part 2 is replaced by two magnets with a different orientation of magnetization.
- each portion of ferromagnetic material 4 has a cylindrical arc shape further provided with a sharp edge 35 oriented in the direction of the axis 25 and therefore of the central point 3.
- the shape of the end of the magnetic poles on the throat circle is modified.
- the gradient of the multi-pole is increased by about 20%.
- the figure 11 is a sectional view of a fourth embodiment of multi-pole according to the invention (without the support 10 which is not shown to lighten this figure), which will be described only for its differences with respect to the first embodiment of multi-pole according to the invention.
- each portion of ferromagnetic material 4 does not have a cylindrical arc shape but has a rectangular parallelepiped shape.
- each permanent magnet part 2 does not have a cylindrical arc shape but has a rectangular parallelepiped shape.
- the figure 12 is a sectional view of a fifth embodiment of multi-pole according to the invention (without the support 10 which is not shown to lighten this figure), which will be described only for its differences from the first mode multi-pole embodiment according to the invention.
- N 6, that is to say that the multi-pole 1 is a magnetic sextupole.
- the figure 13 is a sectional view of a sixth embodiment of multi-pole according to the invention (without the support 10 which is not shown to lighten this figure), which will be described only for its differences from the first mode multi-pole embodiment according to the invention.
- N 8 that is to say that the multi-pole 1 is a magnetic octopole.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Particle Accelerators (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Claims (15)
- Magnetischer Multipol (1), enthaltend:- N Dauermagnetabschnitte (2), die in einer Schnittebene um einen Mittelpunkt (3) herum angeordnet sind, wobei N eine ganze positive Zahl größer oder gleich 2 ist,- N Abschnitte (4) aus ferromagnetischem Material, die in der Schnittebene um den Mittelpunkt (3) herum angeordnet sind, wobei die Dauermagnetabschnitte (2) und die Abschnitte (4) aus ferromagnetischem Material in der Schnittebene in einem Ringbereich (5) um den Mittelpunkt (3) herum enthalten sind, indem sie in dem Ringbereich (5) wechselweise verteilt sind,- periphere Dauermagnete (6), wobei jeder periphere Dauermagnet (6) um eine diesem eigene Drehachse (7) drehbar gelagert ist,dadurch gekennzeichnet, dass
die Drehachse (7) bezüglich des Mittelpunkts (3) jenseits des Ringbereichs (5) liegt. - Magnetischer Multipol nach Anspruch 1, dadurch gekennzeichnet, dass die peripheren Dauermagnete in der Anzahl N vorliegen.
- Magnetischer Multipol nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jeder periphere Dauermagnet mit einem Schirm (8) aus ferromagnetischem Material versehen ist, so dass die Drehachse (7) eines jeden peripheren Dauermagneten (6) auf einem Segment (9) liegt, welches den Schirm (8) dieses peripheren Dauermagneten (6) und den Mittelpunkt (3) verbindet.
- Magnetischer Multipol nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die N Dauermagnetabschnitte (2), die N Abschnitte (4) aus ferromagnetischem Material und die peripheren Dauermagnete (6) innerhalb eines gleichen Trägers (10) gehalten werden, der um den Mittelpunkt (3) herum mit zumindest einem Hohlraum (11, 29) zwischen zwei peripheren Dauermagneten (6) versehen ist.
- Magnetischer Multipol nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass N größer oder gleich 4 ist.
- Magnetischer Multipol nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die N Dauermagnetabschnitte (2) in Dauermagnetabschnittspaare zusammengefasst sind, wobei jedes Dauermagnetabschnittspaar zwei Dauermagnetabschnitte enthält, die in der Schnittebene an bezüglich des Mittelpunkts (3) symmetrischen Stellen angeordnet sind.
- Magnetischer Multipol nach dem vorangehenden Anspruch, dadurch gekennzeichnet, dass jedes Dauermagnetabschnittspaar zwei Dauermagnetabschnitte (2) enthält, die in entgegengesetzten Richtungen magnetisiert sind.
- Magnetischer Multipol nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die N Abschnitte (4) aus ferromagnetischem Material in Ferromagnetabschnittspaare zusammengefasst sind, wobei jedes Ferromagnetabschnittspaar zwei Ferromagnetabschnitte enthält, die in der Schnittebene an bezüglich des Mittelpunkts (3) symmetrischen Stellen angeordnet sind.
- Magnetischer Multipol nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Drehachsen (7) der peripheren Dauermagnete (6) in der Schnittebene auf einem Kreis (12) verteilt sind, der auf den Mittelpunkt (3) zentriert ist.
- Magnetischer Multipol nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass bei jedem peripheren Dauermagneten (6) in der Schnittebene ein Verbindungssegment (13), das die Drehachse (7) dieses peripheren Dauermagneten (6) und den Mittelpunkt (3) verbindet, einen der N Abschnitte (4) aus ferromagnetischem Material erstreckt.
- Magnetischer Multipol nach dem vorangehenden Anspruch, dadurch gekennzeichnet, dass das Verbindungssegment (13, 13a) eines jeden peripheren Dauermagneten (6) sich quer zu einem Abschnitt (4) aus ferromagnetischem Material erstreckt, der sich von den Abschnitten (4) aus ferromagnetischem Material unterscheidet, durch welche sich die Verbindungssegmente (13, 13b) der weiteren peripheren Dauermagnete (6) erstrecken.
- Magnetischer Multipol nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die N peripheren Dauermagnete (6) in periphere Dauermagnetpaare zusammengefasst sind, wobei jedes Dauermagnetpaar zwei periphere Dauermagnete enthält, die in der Schnittebene an bezüglich des Mittelpunkts (3) symmetrischen Stellen angeordnet sind.
- Verfahren zum Einstellen eines magnetischen Multipols nach einem der vorangehenden Ansprüche, umfassend eine Drehung zumindest eines der peripheren Dauermagnete (6) um seine Drehachse (7).
- Verfahren nach Anspruch 13, dadurch gekennzeichnet, dass die Drehung zumindest eines der peripheren Dauermagnete eine Drehung von allen peripheren Dauermagneten (6) um ihre Drehachse (7) herum um einen gleichen Drehwinkelwert umfasst.
- Verfahren nach Anspruch 13 oder 14 zum Einstellen eines magnetischen Multipols nach Anspruch 12, dadurch gekennzeichnet, dass:- die beiden peripheren Dauermagnete (6) eines gleichen Paares sich in der gleichen Drehrichtung drehen,- wonach zwei periphere Dauermagnete (6), deren Drehachsen (7) in der Schnittebene entlang einer den Mittelpunkt (3) umgebenden, geschlossenen Schleife (12) aufeinanderfolgen, sich in entgegengesetzten Drehrichtungen drehen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1458335A FR3025689B1 (fr) | 2014-09-05 | 2014-09-05 | Multi-pole magnetique reglable |
PCT/EP2015/069649 WO2016034490A1 (fr) | 2014-09-05 | 2015-08-27 | Multi-pole magnetique reglable |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3189715A1 EP3189715A1 (de) | 2017-07-12 |
EP3189715B1 true EP3189715B1 (de) | 2018-06-13 |
Family
ID=52339235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15766410.3A Active EP3189715B1 (de) | 2014-09-05 | 2015-08-27 | Einstellbarer magnetischer multipol |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3189715B1 (de) |
FR (1) | FR3025689B1 (de) |
WO (1) | WO2016034490A1 (de) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4549155A (en) * | 1982-09-20 | 1985-10-22 | The United States Of America As Represented By The United States Department Of Energy | Permanent magnet multipole with adjustable strength |
US6535092B1 (en) * | 1999-09-21 | 2003-03-18 | Magnetic Solutions (Holdings) Limited | Device for generating a variable magnetic field |
-
2014
- 2014-09-05 FR FR1458335A patent/FR3025689B1/fr not_active Expired - Fee Related
-
2015
- 2015-08-27 WO PCT/EP2015/069649 patent/WO2016034490A1/fr active Application Filing
- 2015-08-27 EP EP15766410.3A patent/EP3189715B1/de active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
FR3025689B1 (fr) | 2018-03-02 |
FR3025689A1 (fr) | 2016-03-11 |
WO2016034490A1 (fr) | 2016-03-10 |
EP3189715A1 (de) | 2017-07-12 |
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