Construction of an in-vacuum type undulator for production of undulator x rays in the 5–25 keV region

Yamamoto, Shigeru; Shioya, Tatsuro; Hara, M.; Kitamura, Hideo; Zhang, Xiao Wei; Mochizuki, Tetsuro; Sugiyama, Hiroshi; Ando, Masami

doi:10.1063/1.1142768

Cited by 74 publications

(26 citation statements)

References 3 publications

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“…(iii) To suppress heating by the image current of the stored beam (Bane & Krinsky, 1993), the permanent magnets should be covered by Cu-plated Ni foils of thickness 50 mm. The ®rst in-vacuum undulator was developed at KEK (Yamamoto et al, 1992). Although the SPring-8 type is based on the KEK device, we have made miniaturization, simpli®cation, standardization and other improvements.…”

Section: Location Beamlinementioning

confidence: 99%

Present Status of SPring-8 Insertion Devices

Kitamura

1998

J Synchrotron Radiat

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According to the general policy, namely, the pursuit of pure radiation without any unreasonable heat load, the construction of various insertion devices has been scheduled at SPring-8. Most of them are of the in-vacuum type, which makes it possible to realize short-period devices, so that the fundamental of undulator radiation may be obtained in the hard X-ray region. In addition, undulator radiation in the soft X-ray range down to 100 eV is available by introducing helical or ®gure-8 devices having low on-axis power density, which is very bene®cial for the optics, gratings or mirrors. A brief overview of the insertion devices at SPring-8 is presented with the initial commissioning results.

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Section: Location Beamlinementioning

confidence: 99%

Present Status of SPring-8 Insertion Devices

Kitamura

1998

J Synchrotron Radiat

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“…The development of in-vacuum undulators (Yamamoto et al, 1992;Kitamura, 1998) has increased the range of tunability of shortperiod undulators, hence allowing further exploitation of the hard X-ray region and accessibility to wavelengths commonly used for MX even on the intense first harmonic.…”

Section: Undulators As Sources Of Synchrotron Radiationmentioning

confidence: 99%

Instrumentation for synchrotron-radiation macromolecular crystallography

Girard

Legrand

Roudenko

et al. 2005

Acta Crystallogr D Biol Cryst

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X‐ray diffraction is an extremely important tool for structure determination of biological macromolecules, to the extent that currently around 85% of Protein Data Bank entries result from X‐ray measurements. Many of these structure determinations use synchrotron radiation for data collection. This article aims to give synchrotron users an overview of the functioning of a synchrotron beamline and how the performance of various instruments combines to allow the collection of diffraction data.

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“…The current trend in undulator developments is toward shortening the magnetic period to obtain SR with shorter wavelength [5][6][7][8]. Therefore, much effort has been made to develop short period undulators such as an in-vacuum undulator [9,10], a superconducting undulator (SCU) working around liquid helium temperature [11,12], and a cryogenic permanent magnet undulator (cryoundulator) [13]. The last one has been recently proposed at SPring-8, which utilizes PMs under cryogenic environment.…”

Section: Introductionmentioning

confidence: 99%

Application of high-temperature superconducting permanent magnets to synchrotron radiation sources

Tanaka

Hara

Kitamura

et al. 2004

Phys. Rev. ST Accel. Beams

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A simple scheme for field enhancement in synchrotron radiation sources such as undulators and wigglers is proposed, which is based on the fundamental nature of the superconducting loop where the magnetic flux is preserved. A superconductor ring placed to enclose the magnetic pole works as a kind of permanent magnet. The magnetization is performed by electromagnetic induction brought by the opening movement of the magnetic gap. Since neither additional external power supplies nor current leads are necessary, high-temperature bulk superconductors can easily be implemented in this scheme. Calculations to check the effectiveness of the new concept show that the critical current density of the superconductor is crucial to the performance of the synchrotron radiation sources based on this concept. Experiments were performed to verify the principle of the proposed scheme, which gave promising results to strongly support it.

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Construction of an in-vacuum type undulator for production of undulator x rays in the 5–25 keV region

Abstract: Articles you may be interested inAn in-vacuum x-ray diffraction microscope for use in the 0.7-2.9 keV range Rev. Sci. Instrum. 83, 033703 (2012);

Cited by 74 publications

References 3 publications

Present Status of SPring-8 Insertion Devices

Present Status of SPring-8 Insertion Devices

Instrumentation for synchrotron-radiation macromolecular crystallography

Application of high-temperature superconducting permanent magnets to synchrotron radiation sources

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