I'm Amali Premathilake a physics graduate student from University Of Virginia. I did my undergrad at University of Peradeniya, Sri Lanka. I'm currently working for PREX and CREX experiments that run in Jefferson Lab hall A. These experiments aims to measure the nucleon skin thickness in Lead and Calcium via parity violating electroweak asymmetry in the elastic scattering of left and right polarized electrons. My work have focused on parity quality beam studies and Compton Polarimeter.