Status of the twin helical undulator soft X-ray beamline at SPring-8: Performance for circular dichroism measurements

T. Muro; T. Nakamura; T. Matsushita; Takanori Wakita; K. Fukumoto; H. Kimura; T. Hirono; T. Kinoshita; T. Hara; K. Shirasawa; M. Takeuchi; H. Kitamura

doi:10.1063/1.2436125

Status of the twin helical undulator soft X-ray beamline at SPring-8: Performance for circular dichroism measurements

T. Muro, T. Nakamura, T. Matsushita, Takanori Wakita, K. Fukumoto, H. Kimura, T. Hirono, T. Kinoshita, T. Hara, K. Shirasawa, M. Takeuchi, H. Kitamura

Research Institute for Interdisciplinary Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

12 Citations (Scopus)

Abstract

The status of the soft x-ray beamline BL25SU at SPring-8 is reported. The beamline performance for circular dichroism measurements using the helicity switching of helical undulator radiation is focused on. Light spots on a sample of the opposite helicities have been observed with a photoelectron emission microscope. The vertical profiles of the spots have almost the same line shape and a positional difference of ∼ 0.5 μm. The horizontal spot positions coincide, but the horizontal spot widths are different by ∼ 7 %. The energy difference of the monochromatized light between the opposite helicities has been estimated to be less than or comparable to 1 meV in the Ne 1s absorption region. The kick angle of the kicker magnets has been increased from 0.2 to 0.3 mrad to avoid penetration of the higher harmonics.

Original language	English
Title of host publication	AIP Conference Proceedings
Pages	571-574
Number of pages	4
Volume	879
DOIs	https://doi.org/10.1063/1.2436125
Publication status	Published - 2007
Event	SYNCHROTRON RADIATION INSTRUMENTATION: 9th International Conference on Synchrotron Radiation Instrumentation - Daegu, Korea, Republic of Duration: May 28 2006 → Jun 28 2006

Other

Other	SYNCHROTRON RADIATION INSTRUMENTATION: 9th International Conference on Synchrotron Radiation Instrumentation
Country	Korea, Republic of
City	Daegu
Period	5/28/06 → 6/28/06

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Keywords

Circular dichroism.
Helicity switching
Soft x-ray beamline
Twin helical undulators

ASJC Scopus subject areas

Physics and Astronomy(all)

Cite this

Muro, T., Nakamura, T., Matsushita, T., Wakita, T., Fukumoto, K., Kimura, H., Hirono, T., Kinoshita, T., Hara, T., Shirasawa, K., Takeuchi, M., & Kitamura, H. (2007). Status of the twin helical undulator soft X-ray beamline at SPring-8: Performance for circular dichroism measurements. In AIP Conference Proceedings (Vol. 879, pp. 571-574) https://doi.org/10.1063/1.2436125

Status of the twin helical undulator soft X-ray beamline at SPring-8 : Performance for circular dichroism measurements. / Muro, T.; Nakamura, T.; Matsushita, T.; Wakita, Takanori; Fukumoto, K.; Kimura, H.; Hirono, T.; Kinoshita, T.; Hara, T.; Shirasawa, K.; Takeuchi, M.; Kitamura, H.

AIP Conference Proceedings. Vol. 879 2007. p. 571-574.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Muro, T, Nakamura, T, Matsushita, T, Wakita, T, Fukumoto, K, Kimura, H, Hirono, T, Kinoshita, T, Hara, T, Shirasawa, K, Takeuchi, M & Kitamura, H 2007, Status of the twin helical undulator soft X-ray beamline at SPring-8: Performance for circular dichroism measurements. in AIP Conference Proceedings. vol. 879, pp. 571-574, SYNCHROTRON RADIATION INSTRUMENTATION: 9th International Conference on Synchrotron Radiation Instrumentation, Daegu, Korea, Republic of, 5/28/06. https://doi.org/10.1063/1.2436125

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abstract = "The status of the soft x-ray beamline BL25SU at SPring-8 is reported. The beamline performance for circular dichroism measurements using the helicity switching of helical undulator radiation is focused on. Light spots on a sample of the opposite helicities have been observed with a photoelectron emission microscope. The vertical profiles of the spots have almost the same line shape and a positional difference of ∼ 0.5 μm. The horizontal spot positions coincide, but the horizontal spot widths are different by ∼ 7 %. The energy difference of the monochromatized light between the opposite helicities has been estimated to be less than or comparable to 1 meV in the Ne 1s absorption region. The kick angle of the kicker magnets has been increased from 0.2 to 0.3 mrad to avoid penetration of the higher harmonics.",

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author = "T. Muro and T. Nakamura and T. Matsushita and Takanori Wakita and K. Fukumoto and H. Kimura and T. Hirono and T. Kinoshita and T. Hara and K. Shirasawa and M. Takeuchi and H. Kitamura",

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AU - Nakamura, T.

AU - Matsushita, T.

AU - Wakita, Takanori

AU - Fukumoto, K.

AU - Kimura, H.

AU - Hirono, T.

AU - Kinoshita, T.

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AU - Shirasawa, K.

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AU - Kitamura, H.

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N2 - The status of the soft x-ray beamline BL25SU at SPring-8 is reported. The beamline performance for circular dichroism measurements using the helicity switching of helical undulator radiation is focused on. Light spots on a sample of the opposite helicities have been observed with a photoelectron emission microscope. The vertical profiles of the spots have almost the same line shape and a positional difference of ∼ 0.5 μm. The horizontal spot positions coincide, but the horizontal spot widths are different by ∼ 7 %. The energy difference of the monochromatized light between the opposite helicities has been estimated to be less than or comparable to 1 meV in the Ne 1s absorption region. The kick angle of the kicker magnets has been increased from 0.2 to 0.3 mrad to avoid penetration of the higher harmonics.

AB - The status of the soft x-ray beamline BL25SU at SPring-8 is reported. The beamline performance for circular dichroism measurements using the helicity switching of helical undulator radiation is focused on. Light spots on a sample of the opposite helicities have been observed with a photoelectron emission microscope. The vertical profiles of the spots have almost the same line shape and a positional difference of ∼ 0.5 μm. The horizontal spot positions coincide, but the horizontal spot widths are different by ∼ 7 %. The energy difference of the monochromatized light between the opposite helicities has been estimated to be less than or comparable to 1 meV in the Ne 1s absorption region. The kick angle of the kicker magnets has been increased from 0.2 to 0.3 mrad to avoid penetration of the higher harmonics.

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KW - Helicity switching

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KW - Twin helical undulators

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Access to Document

10.1063/1.2436125