On the development of the emitter assembly of an acoustic downhole device Alfiya Gilmanova, Oleg Filimonov, Irida Galiullina, Eduard Mukhamadeev and Elena Guseinova E3S Web of Conf., 524 (2024) 03034 Published online: 16 May 2024 DOI: 10.1051/e3sconf/202452403034