▁m ▁height ▁with ▁a ▁ 1 0 ▁m ▁tall ▁structure ▁instrument ed ▁with ▁around ▁ 3 0 0 0 ▁phot om ult ip lier ▁tub es ▁of ▁a ▁ 2 0   cm ▁diameter . ▁The ▁structure ▁will ▁be ▁moved ▁in ▁a ▁vertical ▁direction ▁by ▁a ▁c rane ▁system , ▁providing ▁measurements ▁of ▁neut r ino ▁interactions ▁at ▁different ▁off - axis ▁angles , ▁sp anning ▁from ▁ 1 ° ▁to ▁ 4 ° , ▁and ▁thus ▁for ▁different ▁energy ▁spect ra . ▁Com bin ing ▁the ▁results ▁from ▁different ▁off - axis ▁angles ▁it ▁is ▁possible ▁to ▁extract ▁the ▁results ▁for ▁nearly ▁mon och rom atic ▁neut r ino ▁spectrum ▁without ▁re lying ▁on ▁theoretical ▁models ▁of ▁neut r ino ▁interactions ▁to ▁re construct ▁neut r ino ▁energy . ▁Us age ▁of ▁the ▁same ▁type ▁of ▁det ector ▁as ▁the ▁far ▁det ector ▁with ▁almost ▁the ▁same ▁angular ▁and ▁momentum ▁accept ance ▁allows ▁comparing ▁results ▁from ▁these ▁two ▁detect ors ▁without ▁re lying ▁on ▁detect ors ▁response ▁simulations . ▁These ▁two ▁facts , ▁independence ▁from ▁the ▁neut r ino ▁interaction ▁and ▁det ector ▁response ▁models , ▁will ▁enable ▁to ▁minim ise ▁system atic ▁error ▁in ▁the ▁oscill ation ▁analysis . ▁Add itional ▁advantages ▁of ▁such ▁a ▁design ▁of ▁the ▁det ector ▁is ▁a ▁possibility ▁to ▁search ▁for ▁ster ile ▁oscill ation ▁pattern ▁for ▁different ▁off - axis ▁angles ▁and ▁to ▁obtain ▁a ▁cleaner ▁sample ▁of ▁electron ▁neut r ino ▁interaction , ▁whose ▁fraction ▁is ▁larger ▁for ▁the ▁larger ▁off - axis ▁angle