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作者
Hao, Z. R.; Fan, G. T.; Wang, H. W.; Xu, H. H.; Liu, L. X.; Song, L. L.; Hu, X. R.; Li, X. X.; Kuang, P.; Jin, S.
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刊物名称
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
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年、卷、文献号
2022, 519, 0168-583X
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关键词
Hao, Z. R.; Fan, G. T.; Wang, H. W.; Xu, H. H.; Liu, L. X.; Song, L. L.; Hu, X. R.; Li, X. X.; Kuang, P.; Jin, S.
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摘要
Basing on the inverse Compton scattering of 10640 nm photons from a 100 W CO2 laser on 3.5 GeV electrons from the Shanghai Light Source, Shanghai laser electron gamma source (SLEGS) produces gamma-rays in the energy range of 660 keV-21.7 MeV with a flux of 10(5)-10(7) photons/s. A new annular collimator system was designed to extend the low energy range of SLEGS to 100 keV. Gamma-ray beams in the extended range are quasimonochromatic and with a best possible bandwidth of 13.96% with the flux larger than 10(4) photons/s. The new annular collimator will expand the application areas, and constitutes a critical component of the SLEGS. The Geant4 simulations show that the annular collimator equipped at the experiment hutch is effective in extending energy range and turning bandwidths.
