Coil Constant for 0.75DQB26 Ch 4 (quad) using magnet LCLS-II Quad 4111 New Calibrated Coil Constant = 4366.76502, File coilpar.ru (Old) Coil Constant = 4382.28570 New Constant/Old Constant = 0.9965, Old Coil Radius = 0.0093472, New Radius = 0.0095708, Number of coils = 1 (Only change radius if Number of coils = 1!) Wire Strength = 0.051082 T, Coil Strength = 0.051264 T, Magnet Type is Quadrupole at Imag = 200.000 for coil. Number of Coil Turns = 5 Coil Constant Calculated from radius, turns and magnet order = 4578.2228 (Should be within 5% of Calibrated Coil Constant)