▁pul se ▁for ▁up ▁to ▁ 8 ▁minutes . ▁ ▁Develop ▁techn ologies ▁and ▁processes ▁needed ▁for ▁a ▁fusion ▁power ▁station ▁— ▁including ▁super con duct ing ▁magnet s ▁and ▁remote ▁handling ▁( main ten ance ▁by ▁robot ). ▁ ▁Ver ify ▁tr it ium ▁bre eding ▁concepts . ▁ ▁Ref ine ▁neut ron ▁shield / he at ▁conversion ▁technology ▁( most ▁of ▁the ▁energy ▁in ▁the ▁D + T ▁fusion ▁reaction ▁is ▁released ▁in ▁the ▁form ▁of ▁fast ▁neut rons ). ▁ ▁Tim eline ▁and ▁status ▁ ▁In ▁ 1 9 7 8 , ▁the ▁European ▁Commission , ▁Japan , ▁United ▁States , ▁and ▁USS R ▁joined ▁in ▁the ▁International ▁Tok am ak ▁Re actor ▁( INT OR ) ▁Work shop , ▁under ▁the ▁aus p ices ▁of ▁the ▁International ▁At omic ▁Energy ▁Agency ▁( IA E A ), ▁to ▁assess ▁the ▁read iness ▁of ▁magnetic ▁fusion ▁to ▁move ▁forward ▁to ▁the ▁experimental ▁power ▁re actor ▁( E PR ) ▁stage , ▁to ▁identify ▁the ▁additional ▁R & D ▁that ▁must ▁be ▁undert aken , ▁and ▁to ▁define ▁the ▁characteristics ▁of ▁such ▁an ▁E PR ▁by ▁means ▁of ▁a ▁concept ual ▁design . ▁H undred s ▁of ▁fusion ▁scient ists ▁and ▁engine ers ▁in ▁each ▁particip ating ▁country ▁took ▁part ▁in ▁a ▁detailed ▁assess ment ▁of ▁the ▁then ▁present ▁status ▁of ▁the ▁to k am ak ▁conf in ement ▁concept ▁vis - a - vis ▁the ▁requirements ▁of ▁an ▁E PR , ▁identified ▁the ▁required ▁R & D ▁by ▁early ▁ 1