Błocki, JacekDaniluk, WitoldGil, M.Kielar, ErykMoszczyński, ArkadiuszOliwa, KrzysztofPawlik, BogdanSłomiński, WojciechSuszycki, LeszekWierba, WojciechZawiejski, Leszek2018-01-122018-01-122007http://rifj.ifj.edu.pl/handle/item/157The silicon-tungsten calorimeter LumiCal, located in very forward region of the future detector at the International Linear Collider, is proposed for precisely luminosity measurement. One of the requirements to fulfil this task is available information on the actual position of the calorimeter relative to the beam interaction area which should be known with accuracy of a few micrometers. In this paper we present project measurement unit for the positioning of the LumiCal electron detector by optical method using a laser beam and a CMOS sensor.engReport