ing ▁nuclear ▁effects ▁which ▁are ▁essential ▁for ▁const ra ining ▁the ▁system atic ▁effects ▁of ▁the ▁oscill ation ▁analysis . ▁It ▁is ▁an ▁important ▁step ▁as ▁well ▁in ▁the ▁transition ▁to ▁using ▁semi - in clus ive ▁or ▁exclusive ▁models ▁in ▁neut r ino ▁oscill ation ▁physics , ▁as ▁opposed ▁to ▁current ▁inclus ive ▁models ▁which ▁use ▁only ▁the ▁final ▁state ▁le pton ▁in ▁their ▁predictions . ▁ ▁Hyper - K ami ok ande ▁experiment ▁ ▁The ▁successor ▁of ▁the ▁T 2 K ▁experiment , ▁the ▁Hyper - K ami ok ande ▁( H K ) ▁experiment , ▁will ▁use ▁the ▁upgrad ed ▁system ▁of ▁the ▁currently ▁used ▁acceler ator ▁and ▁neut r ino ▁beam line ▁and ▁upgrad ed ▁set ▁of ▁the ▁near ▁det ector . ▁A part ▁from ▁that , ▁a ▁new ▁far ▁det ector , ▁the ▁Hyper - K ami ok ande ▁det ector , ▁and ▁possibly ▁also ▁a ▁new ▁intermediate ▁det ector ▁will ▁be ▁built . ▁Part ▁of ▁the ▁beam ▁related ▁upgrade ▁works ▁and ▁the ▁upgrade ▁of ▁the ▁N D 2 8 0 ▁det ector ▁will ▁be ▁performed ▁yet ▁before ▁the ▁start ▁of ▁phase ▁II ▁of ▁the ▁T 2 K ▁experiment . ▁The ▁H K ▁experiment ▁is ▁expected ▁to ▁start ▁operation ▁around ▁the ▁year ▁ 2 0 2 7 . ▁ ▁Hyper - K ami ok ande ▁det ector ▁ ▁The ▁Hyper - K ami ok ande ▁det ector ▁will ▁be ▁a ▁water ▁Ch eren kov ▁det ector , ▁ 5 ▁times ▁larger ▁( 2 5 8 ▁k ton ▁of