Design of a high flux VUV beamline for low energy photons

WANG Jia-Jia; YE Mao; SHI Tan; CHANG Rui; QIAO Shan

doi:10.1088/1674-1137/39/4/048001

Chinese Physics C> 2015, Vol. 39> Issue(4) : 048001 DOI: 10.1088/1674-1137/39/4/048001

Design of a high flux VUV beamline for low energy photons

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Abstract：
A VUV beamline at the Shanghai Synchrotron Radiation Facility (SSRF) for angle-resolved photoelectron spectroscopy (ARPES) measurements is designed. To increase the resolution and bulk sensitivity, a photon energy as low as 7 eV is desired. Because the reflectivity for p-polarized photons strongly decreases when the photon energy is below 30 eV, the design of a high flux beamline for low energy VUV photons is a challenge. This work shows a variable including angle Varied Line-space Plane-Grating Monochromator (VLPGM) with varied grating depth (VGD) which can achieve both high resolution and high flux with broad energy coverage.

References

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Brundle, C. R. J. Vacuum Sci. Technol., 1974, 11: 212-224[2] QIAO S et al. Rev. Sci. Instrum., 2009, 80: 085108[3] Onuki H, Elleaume P. Undulators, Wigglers and Their Applications. London: Taylor and Francis, 2003. 79[4] CHEN C T. Nucl. Instrum. Methods A, 1987, 256: 595-604[5] Follath R, Sent F, Gudat W J. Synchrotron Rad., 1998, 5: 769-771[6] Strocov V N et al. J. Synchrotron Rad., 2010, 17: 631-643[7] YAN Y, Shigemasa E, Yagishita A J. Synchrotron Rad., 1998, 5: 246-251[8] Amemiya K, Ohta T J. Synchrotron Rad., 2004, 11: 171-176[9] Schafers F, Abramsohn D, Krumrey M. REFLEC, a Program to Calculate VUV/X-ray Optical Elements and Synchrotron Radiation Beamline. BESSY Preprint, 2002[10] Neviére M, Vincent P et al. Appl. Optics, 1978, 17: 843-845[11] Schafers F. Ray, the Bessy Raytrace Program to Calculate Synchrotron Radiation Beamlines. BESSY Preprint, 1996

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WANG Jia-Jia, YE Mao, SHI Tan, CHANG Rui and QIAO Shan. Design of a high flux VUV beamline for low energy photons[J]. Chinese Physics C, 2015, 39(4): 048001. doi: 10.1088/1674-1137/39/4/048001

WANG Jia-Jia, YE Mao, SHI Tan, CHANG Rui and QIAO Shan. Design of a high flux VUV beamline for low energy photons[J]. Chinese Physics C, 2015, 39(4): 048001. doi: 10.1088/1674-1137/39/4/048001 shu

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Received: 2014-05-19
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Design of a high flux VUV beamline for low energy photons

Corresponding author: QIAO Shan,

Received Date: 2014-05-19
Accepted Date: 1900-01-01
Available Online: 2015-04-05

Abstract: A VUV beamline at the Shanghai Synchrotron Radiation Facility (SSRF) for angle-resolved photoelectron spectroscopy (ARPES) measurements is designed. To increase the resolution and bulk sensitivity, a photon energy as low as 7 eV is desired. Because the reflectivity for p-polarized photons strongly decreases when the photon energy is below 30 eV, the design of a high flux beamline for low energy VUV photons is a challenge. This work shows a variable including angle Varied Line-space Plane-Grating Monochromator (VLPGM) with varied grating depth (VGD) which can achieve both high resolution and high flux with broad energy coverage.