EP2340692A1 - Onduleur destiné à produire un rayonnement synchrotron - Google Patents

Onduleur destiné à produire un rayonnement synchrotron

Info

Publication number
EP2340692A1
EP2340692A1 EP09748993A EP09748993A EP2340692A1 EP 2340692 A1 EP2340692 A1 EP 2340692A1 EP 09748993 A EP09748993 A EP 09748993A EP 09748993 A EP09748993 A EP 09748993A EP 2340692 A1 EP2340692 A1 EP 2340692A1
Authority
EP
European Patent Office
Prior art keywords
undulator
layers
winding body
magnetic material
poles
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.)
Granted
Application number
EP09748993A
Other languages
German (de)
English (en)
Other versions
EP2340692B1 (fr
Inventor
Axel Bernhard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Karlsruher Institut fuer Technologie KIT
Original Assignee
Karlsruher Institut fuer Technologie KIT
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Karlsruher Institut fuer Technologie KIT filed Critical Karlsruher Institut fuer Technologie KIT
Publication of EP2340692A1 publication Critical patent/EP2340692A1/fr
Application granted granted Critical
Publication of EP2340692B1 publication Critical patent/EP2340692B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • H05H13/00—Magnetic resonance accelerators; Cyclotrons
    • H05H13/04—Synchrotrons

Definitions

  • the invention relates to undulators, which serve as a source of electro-magnetic radiation ⁇ consisting of a particle stream (z. B. electrons), which passes through the undulator is generated.
  • Undulators are used in particular for the generation of X-rays in synchrotron radiation sources.
  • DE 38 13 460 A1 discloses an undulator for generating synchrotron radiation from a particle flow introduced therein, which has two partial undulators between which the particle flow is introduced, wherein a body has recesses into which a plurality of magnetic poles of the undulator are introduced wherein the body is alternately constructed of a plurality of first layers and second layers arranged parallel to each other, the first layers each having a non-magnetic material and the second layers each having a soft magnetic material serving as a pole of the undulator.
  • correction coils must be arranged in the undulator gap between the two partial undulators and thus entail either an enlargement of the undulator gap and therefore a reduction in the achievable field amplitude or the space available for the electron beam and therefore at Operation in a storage ring reduce the life of the electron beam.
  • the local correction coils should be laterally, i. are arranged perpendicular to the main direction (longitudinal axis) of the bobbin.
  • the field of correction coils arranged in this way magnetizes the largely unsaturated winding body and in this way distributes itself over the entire length of the undulator. Therefore, despite their designation, local correction coils are not suitable for effective local field error correction.
  • an undulator which does not have the aforementioned disadvantages and limitations.
  • an undulator should be provided. the one that enables effective local field error correction by laterally mounted correction coils.
  • the idea underlying the invention is to control the magnetic flux in the longitudinal direction, i. along the main direction of the bobbin, to interrupt. In this way it becomes possible to produce a very well located correction field by lateral correction coils attached to the relevant poles of the undulator.
  • the winding body is alternately composed of magnetic and non-magnetic layers (layers, disks), which are not parallel to the beam axis, respectively.
  • the lamination is realized by a structure of the winding body of alternately arranged soft magnetic Polblechen and non-magnetic sheets, which serve as a winding base for the coil packs and interrupt the magnetic flux in the longitudinal direction.
  • the correction coils are each mounted laterally relative to the longitudinal axis of the winding body at the locations required for this purpose.
  • a device thus consists of two partial undulators, between which the particle flow, the z. B. consists of electrons, is introduced.
  • each partial undulator has a winding body which is designed such that it is suitable for receiving a coil package and a plurality, preferably from 20 to 500, particularly preferably from 50 to 200, of magnetic poles of the undulator.
  • the winding body consists of alternating -A- a variety, preferably from 20 to 500, more preferably from
  • first layers and second layers arranged to be parallel to each other but not parallel to the direction of particle flow.
  • the first layers and the second layers of each winding body parallel thereto assume an angle of 15 ° to 165 °, preferably of 60 ° to 120 °, particularly preferably approximately 90 ° with respect to the particle flow.
  • the said angle amounts to Anna while 90 ° is in the vorlie ⁇ constricting invention is a further development of a conventional superconducting undulator, otherwise a further development of a heiischen superconducting undulator according to DE 103 58 225 B3.
  • the first layers are each at least partially made of a non-magnetic material, which is geometrically configured and arranged so that the preferably superconducting coil package is guided over it.
  • the material used is preferably non-magnetic sheets, in particular made of copper or a glass fiber reinforced plastic.
  • the second layers each consist at least partially of a soft magnetic material, which serve as poles of the undulator.
  • Soft magnetic pole plates in particular made of iron or an iron cobalt alloy, are preferably used as the material.
  • the first layers and the second layers are each of the same thickness, wherein the ratio of the thickness of the first layers to the thickness of the second layers is from 1: 1 to 3: 1.
  • At least one correction coil is laterally attached to one of the second layers or introduced into a recess in the winding body in one of the second layers with respect to the axis of the winding body.
  • the particular structure of the undulator according to the invention enables the generation of a well-localized correction field by lateral correction coils.
  • the invention has in particular the advantages mentioned below.
  • the undulator of the present invention enables effective local field error correction by attaching lateral correction coils to selected second layers.
  • the heat transport through the bobbin and thus the overall cooling of the coils can be improved.
  • FIG. 1 Schematic representation of the structure of a superconducting undulator according to the invention
  • FIG. 2 Schematic representation of the structure of a superconducting undulator according to the invention, rotated by 30 ° with respect to Figure 1, with introduced correction coil.
  • the undulator 10 consists of two partial undulators 11, 12, between which the particle flow 1 is made of electrons.
  • Each sub-undulator 11, 12 has a winding body, which alternately from a parallel to each other mounted plurality of first layers 21, 21 ', 21'', ... and second layers 22, 22', 22 ", ... consists ,
  • the first and second layers are arranged in this example so that they are each perpendicular to the direction of the particle stream 1.
  • the first layers 21, 21 ', 21'', ... are each made of copper sheets as a non-magnetic material over which the superconducting coil package is guided.
  • the second layers 22, 22 ', 22'', ... each consist of iron sheets as a soft magnetic material and serve here as the poles of the undulator.
  • Fig. 2 the structure of a superconducting undulator 10 according to the invention, which is rotated by approximately 30 ° with respect to the undulator of FIG. 1 and in addition the correction coils 31, 31 ', shown schematically.
  • the correction coils 31, 31 ' are in this case wound in each sub-undulator 11, 12 each laterally with respect to the axis of the winding body to one of the second layers.
  • FIG. 3 a shows the calculated course of the magnetic field on the beam axis when using lateral correction coils in an undulator according to the prior art.
  • the continuous unmagnetized bobbin was completely magnetized by the correction coils. It can be seen that the use of laterally mounted correction coils does not allow local correction of the 'local magnetic field in a conventional undulator.
  • Fig. 3b shows the calculated course of the magnetic field on the beam axis when using a laminated undulator according to the invention. It follows that now the use of laterally mounted correction coils allows a well-defined local correction of the local magnetic field in an undulator according to the invention.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optics & Photonics (AREA)
  • Particle Accelerators (AREA)

Abstract

L'invention concerne un onduleur (10) destiné à produire un rayonnement synchrotron à partir d'un flux de particules (1) qui y est introduit et qui est composé en particulier d'électrons. L'onduleur (10) comprend deux onduleurs élémentaires (11, 12) qui comprennent un corps bobiné destiné à recevoir un paquet de bobines et une pluralité de pôles magnétiques de l'onduleur. Le corps bobiné se compose alternativement d'une pluralité de premières couches (21, 21', 21'', ...) disposées parallèlement entre elles, qui sont faites dans un matériau non magnétique sur lequel est guidé le paquet de bobines, et de deuxièmes couches (22, 22', 22'', ...) qui sont faites dans un matériau magnétique doux et qui servent de pôles de l'onduleur. L'onduleur selon l'invention comprend en outre des bobines de correction latérales (31, 31', ...) qui sont disposées sur des deuxièmes couches sélectionnées et permettent une correction locale efficace des erreurs de champ.
EP09748993.4A 2008-10-24 2009-10-17 Onduleur destiné à produire un rayonnement synchrotron Active EP2340692B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810053162 DE102008053162B3 (de) 2008-10-24 2008-10-24 Undulator zur Erzeugung von Synchrotronstrahlung
PCT/EP2009/007467 WO2010046068A1 (fr) 2008-10-24 2009-10-17 Onduleur destiné à produire un rayonnement synchrotron

Publications (2)

Publication Number Publication Date
EP2340692A1 true EP2340692A1 (fr) 2011-07-06
EP2340692B1 EP2340692B1 (fr) 2014-12-17

Family

ID=41460956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09748993.4A Active EP2340692B1 (fr) 2008-10-24 2009-10-17 Onduleur destiné à produire un rayonnement synchrotron

Country Status (3)

Country Link
EP (1) EP2340692B1 (fr)
DE (1) DE102008053162B3 (fr)
WO (1) WO2010046068A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102930916A (zh) * 2012-10-31 2013-02-13 中国科学院上海应用物理研究所 一种高温超导跑道线圈阵列型波荡器
CN102945722B (zh) * 2012-11-27 2015-04-15 中国科学院上海应用物理研究所 一种二硼化镁超导波荡器
CN113363046B (zh) * 2021-05-26 2023-01-17 中国科学院高能物理研究所 一种超导波荡器及其换线方法
US11600416B1 (en) * 2021-08-16 2023-03-07 National Synchrotron Radiation Research Center Cryogen-free high-temperature superconductor undulator structure and method for manufacturing the same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3813460A1 (de) * 1987-05-05 1988-11-24 Varian Associates Elektronenstrahlwiggler mit kurzer periode
US4731598A (en) * 1987-08-24 1988-03-15 The United States Of America As Represented By The Secretary Of The Army Periodic permanent magnet structure with increased useful field
US5019863A (en) * 1987-09-30 1991-05-28 Amoco Corporation Wedged-pole hybrid undulator
US4977384A (en) * 1988-11-25 1990-12-11 The Board Of Trustees Of The Leland Stanford Junior University Micropole undulator
JPH0831599A (ja) * 1994-07-15 1996-02-02 Japan Atom Energy Res Inst 無理数次高調波を発生するアンジュレータに用いられる磁場発生装置
US5631618A (en) * 1994-09-30 1997-05-20 Massachusetts Institute Of Technology Magnetic arrays
DE10358225B3 (de) * 2003-12-12 2005-06-30 Forschungszentrum Karlsruhe Gmbh Undulator und Verfahren zu dessen Betrieb
US7473914B2 (en) * 2004-07-30 2009-01-06 Advanced Energy Systems, Inc. System and method for producing terahertz radiation
DE102006056052B4 (de) * 2006-11-28 2009-04-16 Forschungszentrum Karlsruhe Gmbh Planar-helischer Undulator
DE102007010414A1 (de) * 2007-03-01 2008-09-04 Babcock Noell Gmbh Wickelkörper für elektromagnetische Undulatoren

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010046068A1 *

Also Published As

Publication number Publication date
DE102008053162B3 (de) 2010-07-29
EP2340692B1 (fr) 2014-12-17
WO2010046068A1 (fr) 2010-04-29

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