Speaker
Description
"The Gamma Total Absorption Facility (GTAF) is a high-efficiency gamma-ray spectrometer comprised of 40 BaF₂ (Barium Fluoride) scintillation crystals configured to achieve nearly 4π solid-angle coverage with approximately 90% gamma detection efficiency. This design enables the precise measurement of neutron capture events via coincidence detection of cascade gamma rays from (n, γ) reactions.
The Back-n white neutron beamline at the China Spallation Neutron Source (CSNS) delivers a high-flux pulsed neutron beam covering a wide energy range from 0.3 eV to 200 MeV. The combination of CSNS Back-n and GTAF enables precise measurements of (n,γ) reaction events through coincidence detection of cascade gamma rays, facilitating experiments to determine neutron radiative capture cross-sections and gamma-ray angular distributions, particularly sensitive in the eV region.
Also, GTAF with CSNS Back-n serves the international NOPTREX (Neutron Optical Parity and Time Reversal EXperiment) collaboration a platform to conduct experiments providing information to T-violating enhancement factors via precise measurements on angular distribution of (n, γ) reactions and performing enhanced measurements of P-violation with great statistics."
