Performance Improvement of the Low Energy Branch of 4B9B Beamline in BSRF

QIAN Hai-Jie; YAN Yong-Lian; LIU Feng-Qin; Kurash Ibrahim; TAO Xiao-Ping

Chinese Physics C> 2004, Vol. 28> Issue(3) : 321-324

Performance Improvement of the Low Energy Branch of 4B9B Beamline in BSRF

Institute of High Energy Physics,CAS,Beijing 100039,China

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Abstract：
B9B is a soft X-ray beamline in Beijing Synchrotron Radiation Laboratory, the photon energy range is 10-1000eV, photon energy of the low energy branch is from 10-60eV, mainly for angle resolved photoemission spectrum. Within years operation, some experiments were limited by the poor coumt-rate. This article analyzed the shortcomings on the design of the low energy branch, introduced a new scheme of beamline upgrade which need to change two focusing mirrors, meanwhile the mirror parameters was calculated and tracing results of the new beamline was presented. During SR beam time, performance of the beamline was tested after the improvement work, which shows a much more smaller focused image on sample position, and meanwhile the count-rate of experiments with upgraded are increased by more than one order. The beamline is put into use after the upgrade.

References

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QIAN Hai-Jie, YAN Yong-Lian, LIU Feng-Qin, Kurash Ibrahim and TAO Xiao-Ping. Performance Improvement of the Low Energy Branch of 4B9B Beamline in BSRF[J]. Chinese Physics C, 2004, 28(3): 321-324.

QIAN Hai-Jie, YAN Yong-Lian, LIU Feng-Qin, Kurash Ibrahim and TAO Xiao-Ping. Performance Improvement of the Low Energy Branch of 4B9B Beamline in BSRF[J]. Chinese Physics C, 2004, 28(3): 321-324. shu

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Received: 2003-06-20
Revised: 1900-01-01

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通讯作者: 陈斌, [email protected]

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沈阳化工大学材料科学与工程学院沈阳 110142

Performance Improvement of the Low Energy Branch of 4B9B Beamline in BSRF

Corresponding author: QIAN Hai-Jie,

Institute of High Energy Physics,CAS,Beijing 100039,China

Received Date: 2003-06-20

Accepted Date: 1900-01-01

Available Online: 2004-03-05

Abstract: B9B is a soft X-ray beamline in Beijing Synchrotron Radiation Laboratory, the photon energy range is 10-1000eV, photon energy of the low energy branch is from 10-60eV, mainly for angle resolved photoemission spectrum. Within years operation, some experiments were limited by the poor coumt-rate. This article analyzed the shortcomings on the design of the low energy branch, introduced a new scheme of beamline upgrade which need to change two focusing mirrors, meanwhile the mirror parameters was calculated and tracing results of the new beamline was presented. During SR beam time, performance of the beamline was tested after the improvement work, which shows a much more smaller focused image on sample position, and meanwhile the count-rate of experiments with upgraded are increased by more than one order. The beamline is put into use after the upgrade.

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Performance Improvement of the Low Energy Branch of 4B9B Beamline in BSRF

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