Topical issue on an experimental program with positron beams at Jefferson Lab Nicolas Alamanos, Marco Battaglieri, Douglas Higinbotham, Silvia Niccolai, Axel Schmidt and Eric Voutier Eur. Phys. J. A, 58 3 (2022) 45 Published online: 14 March 2022 DOI: 10.1140/epja/s10050-022-00699-6