Design of permanent multipole magnets with oriented rare earth cobalt material

Halbach, K.

doi:10.1016/0029-554x(80)90094-4

Cited by 1,335 publications

(700 citation statements)

References 2 publications

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“…In SWISSCASE the ring shaped magnets establish the axial confinement featuring rotational symmetry with respect to the beam axis. The Halbach hexapole [12] (Fig. 2) establishes the radial electron confinement.…”

Section: Introductionmentioning

confidence: 93%

Identification of the ECR zone in the SWISSCASE ECR ion source

Bodendorfer

Altwegg

Würz

et al. 2008

Nuclear Instruments and Methods in Physics Research Section B:

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a b s t r a c tThe magnetic field of the permanent magnet electron cyclotron resonance (ECR) ion source SWISSCASE located at the University of Bern has been numerically simulated and experimentally investigated. For the first time the magnetized volume qualified for electron cyclotron resonance at 10.88 GHz and 388.6 mT has been analyzed in highly detailed 3D simulations with unprecedented resolution. The observed pattern of carbon coatings on the source correlates strongly with the electron and ion distribution in the ECR plasma of SWISSCASE. Under certain plasma conditions the ion distribution is tightly bound to the electron distribution and can considerably simplify the numerical calculations in ECR related applications such as ECR ion engines and ECR ion implanters.

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Section: Introductionmentioning

confidence: 93%

Identification of the ECR zone in the SWISSCASE ECR ion source

Bodendorfer

Altwegg

Würz

et al. 2008

Nuclear Instruments and Methods in Physics Research Section B:

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“…The minimum-B field profile is formed by four magnet assemblies, each composed of high remanence NdFeB alloy magnets configured in Halbach arrays [5], with the injection and extraction magnets providing axial confinement, a hexapole magnet for radial confinement, and a central magnet for enhancement of magnetic field in the ECR region. The superposition of axial magnetic field contributions of each magnet array were calculated with PANDIRA, a package in the Poisson-SUPERFISH software suite [6].…”

Section: Magnetic Confinement Systemmentioning

confidence: 99%

Design of a compact all-permanent magnet ECR ion source injector for ReA at the MSU NSCL

Pham

Leitner

Glennon

et al. 2016

Nuclear Instruments and Methods in Physics Research Section B:

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Keywords:Compact ECR ion source Permanent magnet ECR Low energy beam transport Heavy ion beams a b s t r a c tThe design of a compact all-permanent magnet electron cyclotron resonance (ECR) ion source injector for the ReAccelerator Facility (ReA) at the Michigan State University (MSU) National Superconducting Cyclotron Laboratory (NSCL) is currently being carried out. The ECR ion source injector will complement the electron beam ion trap (EBIT) charge breeder as an off-line stable ion beam injector for the ReA linac. The objective of the ECR ion source injector is to provide continuous-wave beams of heavy ions from hydrogen to masses up to 136 Xe within the ReA charge-to-mass ratio (Q =A) operational range from 0.2 to 0.5. The ECR ion source will be mounted on a high-voltage platform that can be adjusted to obtain the required 12 keV/u injection energy into a room temperature radio-frequency quadrupole (RFQ) for further acceleration. The beam line consists of a 30 kV tetrode extraction system, mass analyzing section, and optical matching section for injection into the existing ReA low energy beam transport (LEBT) line. The design of the ECR ion source and the associated beam line are discussed.

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“…Motors I and II generate Figure 3 shows the novel concentrated-®eld magnet matrix that produces the constant magnetic ®eld for actuation [12]. This magnet matrix can be produced conceptually by the superimposition of two orthogonal Halbach arrays [13], as shown in Fig. 3a.…”

Section: Working Principlementioning

confidence: 99%

Integrated multidimensional positioner for precision manufacturing

Kim

Bhat

2004

Proceedings of the Institution of Mechanical Engineers, Part B:

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Reliable low-cost positioning for precision manufacturing processes requiring clean-room, extreme-temperature or vacuum environments is key for microelectronics manufacturing, packaging, machine tool and high-precision inspection industries. The integrated multidimensional positioner presented herein is a major technological breakthrough and may o er competitive advantages in both cost and performance relative to current practices. Speci®cally, this integrated positioner can generate all required ®ne and coarse motions with only one levitated moving part, namely the platen, and have potential to satisfy the dynamic performance speci®cations necessary for next-generation deepsubmicron microelectronics manufacturing equipment. Absence of particulate contamination without mechanical contact between the single moving part and the machine frame makes this technology highly suited to clean-room operation. In this paper, the design concept, electromechanical design and fabrication and assembly of all the key parts in the development of this multidimensional positioner are presented. A dynamic model and feedback controllers were derived and implemented. This

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Design of permanent multipole magnets with oriented rare earth cobalt material

Cited by 1,335 publications

References 2 publications

Identification of the ECR zone in the SWISSCASE ECR ion source

Identification of the ECR zone in the SWISSCASE ECR ion source

Design of a compact all-permanent magnet ECR ion source injector for ReA at the MSU NSCL

Integrated multidimensional positioner for precision manufacturing

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