CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
Simple, high-resolution method for measurement of the natural relative energy bandwidth of Si(111) double crystal monochromators
Li, ZL; Yang, JL; Si, SY; Li, T; Hu, LF; Song, L; Xue, L; Wang, J; Zhang, XW
2020
Source PublicationNUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN0168-9002
Volume983Pages:-
Subtype期刊论文
AbstractMeasurement of photon energy resolution, an important operational parameter of X-ray double-crystal monochromators (DCMs), is complicated by the coupled relationship between energy bandwidth and diffraction angle. This paper reports two methods of analyzing the natural relative energy bandwidth of DCMs at fixed photon energy. The first is based on measurement of the post-DCM beam using a monolithic double channel-cut monochromator (MDCM), while the second uses measurements of the K absorption edge of copper (Cu) in the post-DCM beam as a small vertical angular slice of the source is scanned. Both analysis methods eliminate the effects of synchrotron radiation (SR) vertical angular divergence. The natural relative energy bandwidth values for the Si(111) DCM measured by the MDCM and Cu K-edge absorption methods are 1.59x10(-4) at 12.763 keV and 1.61x10(-4) at 8.979 keV, respectively. This result demonstrates that the two methods offer nearly the same level of precision for determining the natural relative energy bandwidth of Si(111) DCMs. However, the Cu K-edge absorption method has the advantages of requiring simpler experimental equipment and significantly shorter data acquisition time.
KeywordCOOLED SILICON CRYSTAL PERFORMANCE POWER DIFFRACTION BEAMLINE
DOI10.1016/j.nima.2020.164526
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/33136
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
3.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Li, ZL,Yang, JL,Si, SY,et al. Simple, high-resolution method for measurement of the natural relative energy bandwidth of Si(111) double crystal monochromators[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2020,983:-.
APA Li, ZL.,Yang, JL.,Si, SY.,Li, T.,Hu, LF.,...&Zhang, XW.(2020).Simple, high-resolution method for measurement of the natural relative energy bandwidth of Si(111) double crystal monochromators.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,983,-.
MLA Li, ZL,et al."Simple, high-resolution method for measurement of the natural relative energy bandwidth of Si(111) double crystal monochromators".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 983(2020):-.
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