Design and evaluation of a short period Nb/sub 3/Sn superconducting undulator prototype

Prestemon, S.; Dietderich, D.R.; Gourlay, S.A.; Heimann, Philip; Marks, S.; Sabbi, G.; Scanlan, R.M.; Schlueter, R.; Wang, B.; Wahrer, B.

doi:10.1109/pac.2003.1289595

Cited by 9 publications

(8 citation statements)

References 4 publications

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“…the widespread Apple-IIs [29], and (c) in-vacuum undulators (IVIDs) [30], now standard in many synchrotrons. Under development are (a) new varieties of polarizing undulators, (b) quasi-periodic devices, (c) cryogenic PMs [30,31], and (d) superconducting undulators (SCUs), including planar designs and beyond [33]. Undulator designs specific for FELs and ERLs, but unsuitable for storage rings include (a) those with poles close to beam horizontally, e.g.…”

Section: Present Statusmentioning

confidence: 99%

“…Preliminary readiness has been demonstrated in various SCU prototypes [33,4448], including specifically demon stration of (a) highestperforming strength capability of all candidate undulator technologies, (b) tuning strength capability technique for phase error correction, (c) insitu cryogenic tuning control for maintaining phase, (d) attaining near (> 90%) short sample fields in Nb3Sn undulators, (e) winding, fabrication, and assembly of Nb3Sn devices, and (f) development in industry of thin ceramic insulators with adequate coverage and insulator thickness quality control for longlength conductors [49].…”

Section: Principal Superconducting Undulator (Scu) Development Challementioning

confidence: 99%

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Enabling instrumentation and technology for 21st century light sources

Byrd

Shea

Denes

et al. 2010

Nuclear Instruments and Methods in Physics Research Section A:

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We present the summary from the Accelerator Instrumentation and Technology working group, one of the five working groups that participated in the BES-sponsored Workshop on Accelerator Physics of Future Light Sources held in Gaithersburg, MD September 15-17, 2009. We describe progress and potential in three areas: attosecond instrumentation, photon detectors for user experiments, and insertion devices.

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Section: Present Statusmentioning

confidence: 99%

Section: Principal Superconducting Undulator (Scu) Development Challementioning

confidence: 99%

Enabling instrumentation and technology for 21st century light sources

Byrd

Shea

Denes

et al. 2010

Nuclear Instruments and Methods in Physics Research Section A:

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“…The reason is that undulators with NbTi wires are easier to manufacture than undulators with wires. Several institutes have built short mock-ups with wires in order to investigate the field and the field quality [8], [9]. For wires the transition temperature, the critical field and the critical current densities are higher compared with NbTi strands.…”

Section: Examples Of Mock-up Coils Prepared For Field Measurementmentioning

confidence: 99%

Magnetic Field Test Facility for Superconductive Undulator Coils

Mashkina

Grau

Baumbach

et al. 2008

IEEE Trans. Appl. Supercond.

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Superconducting undulators and wigglers are developed for synchrotron light sources, damping rings for linear colliders and polarized positron sources. In an undulator the emitted photons along the trajectory have to interfere. In order to do so the magnetic field in all periods has to be almost identical. The field strength over one or several hundred periods is not allowed to deviate by more than 1%. Translated into mechanical accuracy the position of the wire and the poles has to be more accurate than about 5 m over 1 to 2 m. High quality measurement of the field is an essential requirement. In this paper we present two field measuring systems, one is under construction and another one is under design phase at the Forschungszentrum Karlsruhe.

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“…The first device, with a 30 mm period, concentrated on basic fabrication details and magnet protection [5]. The second, a 14.5 mm device, included a number of design modifications/improvements based on experience from the first device [6].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a Short-Period ${\rm Nb}_{3}{\rm Sn}$ Superconducting Undulator

Dietderich

Godeke

Prestemon

et al. 2007

IEEE Trans. Appl. Supercond.

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Lawrence Berkeley National Laboratory develops high-field Nb 3 Sn magnets for HEP applications. In the past few years, this experience has been extended to the design and fabrication of undulator magnets. Some undulator applications require devices that can operate in the presence of a heat load from a beam. The use of Nb 3 Sn permits operation of a device at both a marginally higher temperature (5-8 K) and a higher J c , compared to NbTi devices, without requiring a larger magnetic gap. A half-undulator device consisting of 6 periods (12 coil packs) of 14.5 mm period was designed, wound, reacted, potted and tested. It reached the short sample current limit of 717 A in 4 quenches.The non-Cu J c of the strand was over 7,600 A mm 2 and the Cu current density at quench was over 8,000 A mm 2 . Magnetic field models show that if a complete device was fabricated with the same parameters one could obtain beam fields of 1.1 T and 1.6 T for pole gaps of 8 mm and 6 mm, respectively.

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Design and evaluation of a short period Nb/sub 3/Sn superconducting undulator prototype

Cited by 9 publications

References 4 publications

Enabling instrumentation and technology for 21st century light sources

Enabling instrumentation and technology for 21st century light sources

Magnetic Field Test Facility for Superconductive Undulator Coils

Fabrication of a Short-Period ${\rm Nb}_{3}{\rm Sn}$ Superconducting Undulator

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