Coil Constant for 48BC1.6 using magnet LCLS-II Quad 4043 New Calibrated Coil Constant = 271.04852, File coilpar.ru (Old) Coil Constant = 270.45884 New Constant/Old Constant = 1.0022, Old Coil Radius = 0.0195960, New Radius = 0.0197067, Number of coils = 1 (Only change radius if Number of coils = 1!) Wire Strength = 0.674470 T, Coil Strength = 0.673003 T, Magnet Type is Quadrupole at Imag = 45.000 for coil. Number of Coil Turns = 19 Coil Constant Calculated from radius, turns and magnet order = 274.1205 (Should be within 5% of Calibrated Coil Constant)