“…4), we adjust its coil width w such that its area is equal to that of the cosine-theta coil, as in [10], considering that every other parameter is the same (e.g., same engineering current density J, same ampere-turn value per coil, same aperture radius r a , same iron screen radius r s ). For a cosine-theta coil made of N C Ribbon cables [11], each cable having a height h C and a width w C (as depicted in Fig. 4), the coil width w of its equivalent sector coil can be derived from the equality of coil areas, as in [10], and is given by…”