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WEA2WD01 |
QUAPEVA: Variable High Gradient Permanent Magnet Quadrupole |
ion, laser, electron, multipole |
89 |
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- C.A. Kitegi, T. André, M.-E. Couprie, A. Ghaith, J. Idam, A. Loulergue, F. Marteau, D. Oumbarek, M. Sebdaoui, M. Valléau, J. Vétéran
SOLEIL, Gif-sur-Yvette, France
- C. Benabderrahmane, J. Chavanne, G. Le Bec
ESRF, Grenoble, France
- O. Cosson, F. Forest, P. Jivkov, J.L. Lancelot
Sigmaphi, Vannes, France
- P. N'gotta
MAX IV Laboratory, Lund University, Lund, Sweden
- C. Vallerand
LAL, Orsay, France
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We present the magnetic and the mechanical design of tunable high gradient permanent magnet (PM) quadrupoles. The tunable gradient of the so-called QUAPEVAS extends from 100T/m up to 200T/m. Seven of them with various lengths, ranging from 26mm up to 100mm, for different integrated quadrupole strengths were manufactured. The measured magnetic performance of these devices is also reported. These devices were successfully developed to transport laser plasma accelerated electron beam. Such applications have however less stringent multipole harmonic content constraints than diffraction limited Light sources. Trails for lowering the multipole harmonics will be discussed.
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Slides WEA2WD01 [3.093 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-FLS2018-WEA2WD01
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WEP2PT032 |
Feasibility Study of High Energy X-Ray Source at PLS-II |
ion, wiggler, insertion, insertion-device |
138 |
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- J.H. Han, J. Lee, S.B. Lee, S.J. Lee, T.-Y. Lee
PAL, Pohang, Kyungbuk, Republic of Korea
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PLS-II operates for user service with the 34 beamlines since 2012. For engineering applications, especially for thick metal samples, a high energy X-ray beamline is under consideration to cover a photon energy up to §I{100}{keV} or beyond. By comparing the radiation spectra from various insertion devices types, superconducting wiggler was found to be a most promising candidate. A feasibility study to install the high field wiggler in the PLS-II ring is presented in this paper. Electron beam dynamics studies for a minimum impact on the electron beam parameters and engineering consideration to add more magnets are carried out.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-FLS2018-WEP2PT032
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WEP2PT038 |
Conceptual Design for SLS-2 |
ion, lattice, vacuum, emittance |
150 |
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- M.M. Dehler, A. Citterio, T. Garvey, M. Hahn, M. Negrazus, L. Schulz, A. Streun, V. Vranković
PSI, Villigen PSI, Switzerland
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After 17 years of user operation, we plan to do an upgrade of the Swiss Light Source (SLS) for the period of 2021-2024. The entire storage ring will be replaced with a new layout allowing operation at emittances lowered by factors of 40-50. This is made possible to one part by small aperture magnets allowing for a multi bend achromat design and to the other - a special feature for SLS-2 - reverse bends combined with longitudinal gradient bends (LGB) leading to zero dispersion at the maximum magnetic field, thus minimizing the quantum excitation of the beam due to synchrotron radiation. The compact magnet layout makes use of offset quadrupoles, combined function magnets and longitudinal gradient bends. The chamber with a cross section of 20 mm will be fully NEG coated to ensure good pumping and a quick vacuum conditioning. Numerical simulation of instability thresholds has been performed, we expect values in the order of 2 mA for the single bunch current.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-FLS2018-WEP2PT038
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Export • |
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