Citizens of some countries, including China, India, Nigeria, Iran and Russia usually require an Irish visa. A Schengen visa is not valid for Ireland as Ireland does not belong to the Schengen area. Neither is a UK visa valid in Ireland. Please refer to https://www.dfa.ie/travel/visas/visas-for-ireland/ for details. You may request an invitation letter from Conference Partners, once you have registered. Please be sure to apply well in advance, as the process may take several months.
Please contact the conference organiser if you require any assistance: firstname.lastname@example.org