Wiggler improvement based on single axis magnetic measurement, synthesized 3-D field simulation of trajectories and sorting of lateral focusing magnets

H. S. Marks; M. Volshonok; E. Dyunin; A. Gover; Y. Lasser; R. Shershevski; A. Yahalom

doi:10.1016/j.nima.2011.09.004

Wiggler improvement based on single axis magnetic measurement, synthesized 3-D field simulation of trajectories and sorting of lateral focusing magnets

H. S. Marks^*, M. Volshonok, E. Dyunin, A. Gover, Y. Lasser, R. Shershevski, A. Yahalom

^*Corresponding author for this work

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

A method is presented for correcting magnetic field imperfections in an assembled wiggler of the Halbach configuration. The method is employed in a configuration in which lateral focusing is needed along the wiggler (at low beam energies and large length) and is provided by external magnet bars alongside the wiggler. Field deviations in both vertical and lateral dimensions due to wiggler imperfections are repaired by sorting and reassembly of the focusing magnets. A single Hall probe measurement along the wiggler axis and individual measurements of the focusing magnet bars provide sufficient data for sorting and optimal choice of the positions of the focusing magnets. Moreover, this data enables 3D simulation of the e-beam transport trajectories in the virtually synthesized field of the wiggler with the contemplated repair configuration of the focusing magnet bars before actually assembling them. It thus provides in advance a realistic prediction of the quality of the repair.

Original language	English
Pages (from-to)	15-21
Number of pages	7
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	660
Issue number	1
DOIs	https://doi.org/10.1016/j.nima.2011.09.004
State	Published - 21 Dec 2011

Keywords

Magnet Sorting
Optimization
Undulator
Wiggler

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10.1016/j.nima.2011.09.004

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Marks, H. S., Volshonok, M., Dyunin, E., Gover, A., Lasser, Y., Shershevski, R., & Yahalom, A. (2011). Wiggler improvement based on single axis magnetic measurement, synthesized 3-D field simulation of trajectories and sorting of lateral focusing magnets. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 660(1), 15-21. https://doi.org/10.1016/j.nima.2011.09.004

Marks, H. S. ; Volshonok, M. ; Dyunin, E. et al. / Wiggler improvement based on single axis magnetic measurement, synthesized 3-D field simulation of trajectories and sorting of lateral focusing magnets. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2011 ; Vol. 660, No. 1. pp. 15-21.

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abstract = "A method is presented for correcting magnetic field imperfections in an assembled wiggler of the Halbach configuration. The method is employed in a configuration in which lateral focusing is needed along the wiggler (at low beam energies and large length) and is provided by external magnet bars alongside the wiggler. Field deviations in both vertical and lateral dimensions due to wiggler imperfections are repaired by sorting and reassembly of the focusing magnets. A single Hall probe measurement along the wiggler axis and individual measurements of the focusing magnet bars provide sufficient data for sorting and optimal choice of the positions of the focusing magnets. Moreover, this data enables 3D simulation of the e-beam transport trajectories in the virtually synthesized field of the wiggler with the contemplated repair configuration of the focusing magnet bars before actually assembling them. It thus provides in advance a realistic prediction of the quality of the repair.",

keywords = "Magnet Sorting, Optimization, Undulator, Wiggler",

author = "Marks, {H. S.} and M. Volshonok and E. Dyunin and A. Gover and Y. Lasser and R. Shershevski and A. Yahalom",

note = "Funding Information: We thank S.B. van der Geer and M.J. de Loos of Pulsar Physics for programming assistance with GPT. We thank Joachim Pflueger of DESY, Hamburg, for his advice. This research was supported in part by the Israeli Science Foundation , Grant no. 353/09 . ",

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Marks, HS, Volshonok, M, Dyunin, E, Gover, A, Lasser, Y, Shershevski, R & Yahalom, A 2011, 'Wiggler improvement based on single axis magnetic measurement, synthesized 3-D field simulation of trajectories and sorting of lateral focusing magnets', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 660, no. 1, pp. 15-21. https://doi.org/10.1016/j.nima.2011.09.004

Wiggler improvement based on single axis magnetic measurement, synthesized 3-D field simulation of trajectories and sorting of lateral focusing magnets. / Marks, H. S.; Volshonok, M.; Dyunin, E. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 660, No. 1, 21.12.2011, p. 15-21.

Research output: Contribution to journal › Article › peer-review

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AU - Marks, H. S.

AU - Volshonok, M.

AU - Dyunin, E.

AU - Gover, A.

AU - Lasser, Y.

AU - Shershevski, R.

AU - Yahalom, A.

N1 - Funding Information: We thank S.B. van der Geer and M.J. de Loos of Pulsar Physics for programming assistance with GPT. We thank Joachim Pflueger of DESY, Hamburg, for his advice. This research was supported in part by the Israeli Science Foundation , Grant no. 353/09 .

PY - 2011/12/21

Y1 - 2011/12/21

N2 - A method is presented for correcting magnetic field imperfections in an assembled wiggler of the Halbach configuration. The method is employed in a configuration in which lateral focusing is needed along the wiggler (at low beam energies and large length) and is provided by external magnet bars alongside the wiggler. Field deviations in both vertical and lateral dimensions due to wiggler imperfections are repaired by sorting and reassembly of the focusing magnets. A single Hall probe measurement along the wiggler axis and individual measurements of the focusing magnet bars provide sufficient data for sorting and optimal choice of the positions of the focusing magnets. Moreover, this data enables 3D simulation of the e-beam transport trajectories in the virtually synthesized field of the wiggler with the contemplated repair configuration of the focusing magnet bars before actually assembling them. It thus provides in advance a realistic prediction of the quality of the repair.

AB - A method is presented for correcting magnetic field imperfections in an assembled wiggler of the Halbach configuration. The method is employed in a configuration in which lateral focusing is needed along the wiggler (at low beam energies and large length) and is provided by external magnet bars alongside the wiggler. Field deviations in both vertical and lateral dimensions due to wiggler imperfections are repaired by sorting and reassembly of the focusing magnets. A single Hall probe measurement along the wiggler axis and individual measurements of the focusing magnet bars provide sufficient data for sorting and optimal choice of the positions of the focusing magnets. Moreover, this data enables 3D simulation of the e-beam transport trajectories in the virtually synthesized field of the wiggler with the contemplated repair configuration of the focusing magnet bars before actually assembling them. It thus provides in advance a realistic prediction of the quality of the repair.

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Marks HS, Volshonok M, Dyunin E, Gover A, Lasser Y, Shershevski R et al. Wiggler improvement based on single axis magnetic measurement, synthesized 3-D field simulation of trajectories and sorting of lateral focusing magnets. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2011 Dec 21;660(1):15-21. doi: 10.1016/j.nima.2011.09.004

Wiggler improvement based on single axis magnetic measurement, synthesized 3-D field simulation of trajectories and sorting of lateral focusing magnets

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