The following is the cloverleaf magnetic trap that I used for BEC experiment. This is a kind of IP trap and one can easily guess the origin of this name of this trap from the shape of the green coils in fig.1.
Fig.1 : Image of the Cloverleaf magnetic trap.
Fig.2 : A part of cloverleaf trap coil set
Fig.3 : Cloverleaf trap coil set
Fig.4 : Energy scale of the cloverleaf magnetic trap and the evaporative cooling RF resonance