Active Collimator for the BGO Anti-Compton Shield of the HPGe Clover Detector Biswajit Das, N.R. Khan Chowdhury, S. Saha, Md.R.S. Laskar, F.S. Babra, V. Malik, A. Kundu, P. Dey, S.K. Jadav, B.S. Naidu et al. (3 more) EPJ Web Conf., 288 (2023) 10004 Published online: 21 November 2023 DOI: 10.1051/epjconf/202328810004