Speaker
Description
The Shanghai Laser Electron Gamma Source (SLEGS) is a tunable, quasi-monochromatic gamma-ray beamline at the Shanghai Synchrotron Radiation Facility (SSRF). It utilizes Laser Compton Scattering (LCS), colliding 10.6 μm photons from a 100 W CO₂ laser with 3.5 GeV electrons to produce gamma rays in the energy range of 0.66-21.7 MeV, with fluxes of 10⁵-10⁷ photons/s. A key feature is the use of slant scattering, enabling continuous energy tuning via scattering angle adjustment (20-160 degrees). SLEGS serves as a versatile platform for fundamental and applied nuclear research.
The report introduces SLEGS's operational parameters, user access system, and organization. It highlights typical experiments conducted, including (γ,n) cross-section measurements across light (e.g., D, ⁹Be), medium-mass (e.g., ⁵⁵Mn, ⁵⁸Ni), and heavy nuclei (e.g., ¹⁹⁷Au, ¹⁰⁸Cd, ¹¹²Sn) using specialized detectors like a 4π ³He array and n-TOF systems. Experiments investigating photon polarization distributions and performing electron beam size diagnostics were also conducted.
Future upgrades and integration with facilities like SXFEL and SHINE are outlined. SLEGS is now open to international users, fostering collaborations worldwide, and has produced significant publications in nuclear physics and instrumentation.
| Presentation mode | Onsite |
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