Energy profile of laser Compton slant-scattering γ-ray beams determined by direct unfolding of total-energy responses of a BGO detector

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2024-06, Vol.1063, p.169314, Article 169314
• Main Authors: Liu, L.X., Utsunomiya, H., Fan, G.T., Xu, H.H., Wang, H.W., Hao, Z.R., Zhang, Y., He, C.Y., Jiao, P., Ye, S., Jin, S., Chen, K.J., Yang, Y.X., Sun, Q.K., Wang, Z.W., Li, Z.C., Zhou, M.D., Lu, X., Yang, C., Lu, F., Cao, X.G.
• Format: Article
• Language: English
• Subjects: Direct deconvolution method; Laser Compton slant scattering; Quasi-monoenergetic gamma rays; Total-energy BGO detector
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2024.169314

Total-energy responses of a 76 mm × 200 mm BGO detector were used to deduce energy distributions of quasi-monoenergetic gamma-rays generated at the Shanghai Laser Electron Gamma Source (SLEGS) of the Shanghai Synchrotron Radiation Facility. Responses of the BGO detector to monoenergetic gamma-rays produced in (p,γ) reactions on LiF, 27Al, and 13C targets were measured at the China Institute of Atomic Energy. A direct unfolding of BGO total-energy responses into gamma-ray energy distributions was iteratively performed by solving a set of linear equations with the monoenergetic response of the BGO detector being the matrix element. We present resultant energy distributions of gamma-ray beams produced in the slant-scattering at SLEGS.