"GSI proceeds design studies with respect to future requests of FAIR and further projects.
Beyond the 2 T limit of an iron dominated magnet, a superconducting high field septum magnet is one of the key component of new planned circulare accelerators.
For a higher magnetic field, an 8 T level conceptual 2D design was presented in 2016.
Now analytical calculations were made to acquire the design principle of a iron-yoked cosine-theta septum magnet at high fields far beyond 2 T.
We present the status of the engineering study for a 4 T level superconducting septum magnet including the mechanical design of the magnet.
Suggestions will be given to extend the electromagnetic design for other applications.