Multipoles of the SLS storage ring: manufacturing and magnetic measurements

Antokhin, E.; Batrakov, A.M.; Churkin, I. N.; Demenev, V.V.; Dodonov, A.B.; Golubenko, O.B.; Korchuganov, V.; Levichev, E.; Mikhailov, S.; Ogurtsov, A. B.; Philipchenko, A.; Rivkin, Leonid; Rouvinski, E.; Rouvinski, S.I.; Schreiner, Kurt; Sernenov, E.P.; Singatulin, Sh. R.; Skorobogatov, Dmitry; Steshov, A.; Sukhanov, A.; Ушаков, В. А.; Vollenweider, C.; Zichy, J.

doi:10.1109/tasc.2002.1018350

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…A feet-shimming method was used to shim the mechanical and magnetic centers of a magnet near the ideal center. The precise center of magnet decreases the B 0 L/B 1 L(B 1 L/B 2 L) and A 0 L/B 1 L(A 1 L/B 2 L) multipoles of the quadrupole (sextupole) magnet [5]. Fig.…”

Section: Short-quadrupole Magnetmentioning

confidence: 89%

Multipole Errors and Methods of Correction for TPS Lattice Magnets

Jan

Kuo

Chang

et al. 2014

IEEE Trans. Appl. Supercond.

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Taiwan Photon Source (TPS) is a synchrotron radiation facility of medium energy, 3 GeV, and low emittance, under construction at National Synchrotron Radiation Research Center (NSRRC). The multipole errors of lattice magnets were rigorously examined and corrected so as to maintain the dynamic aperture of the electron beam in the storage ring. The lattice magnets were fully inspected at both the vendor and vendee sites. The multipole errors of the lattice magnets were tested and corrected. In particular, the sextupole magnets have the pole position adjusted to correct the multipole errors so as to conform to the specification. The yoke cutting is to correct the octupole error of the long-quadrupole magnets. The shimming of the magnetic center and the final examination of the magnets will be undertaken at NSRRC. In this paper, we report the methods of correcting the multipole errors, the magnetic center, and the performance of the TPS lattice magnets.

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Section: Short-quadrupole Magnetmentioning

confidence: 89%

Multipole Errors and Methods of Correction for TPS Lattice Magnets

Jan

Kuo

Chang

et al. 2014

IEEE Trans. Appl. Supercond.

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“…The horizontal tune shift terms for the bare lattice without damping wigglers are (for one super period) (23) whereas if units of are added to the quadrupoles in the dispersive sections (see Appendix A) we obtain 1. On a fundamental level, they are inconsistent with Maxwell's equations.…”

Section: Impact Of Higher Order Systematic Multipolesmentioning

confidence: 99%

“…The initial magnetic field tolerances were based on experience from the SLS [23] and parametric studies [24]. Moreover, two spare quadrupoles and sextupoles were borrowed and re-measured/studied locally [25].…”

Section: Appendix A: Summary Of Engineering Tolerancesmentioning

confidence: 99%