def METHOD_NAME(self):
    """
    Store a copy of values of parameters of the slicer into a dictionary.
    :return params: the dictionary created
    """
    params = {}
    ## Always make sure that the left and the right line are at phi
    ## angle of the middle line
    if np.fabs(self.left_line.phi) != np.fabs(self.right_line.phi):
        msg = "Phi left and phi right are "
        msg += "different %f, %f" % (self.left_line.phi,
                                     self.right_line.phi)
        raise ValueError(msg)
    params["Phi"] = self.main_line.theta
    params["Delta_Phi"] = np.fabs(self.left_line.phi)
    return params