Optimization of pick-up coils for weakly damped SQUID gradiometers

Yang Kang^{1, 2, 3}, Wang Jialei^{1, 2, 3}, Kong Xiangyan^{1, 2, 3, †}, Yang Ruihu^{1, 2, 3}, Chen Hua^{1, 2, 3}

(color online) Isograms of three performance parameters plotted as a function of the radius and baseline. (a) SNR curve, the red line represents SNR = 36. (b) Sensitivity curve, the red line represents sensitivity equal to . (c) Spatial resolution curve, the red line represents resolution equal to 0.3 mm. Here, D = 15 mm, , , , , and .