Disclosed are a method and system for manufacturing integrated circuits meeting special customer requirements with multiple subcontractors in remote locations. When the case is closed, the surgical instruments are held securely in position, resting against an internal tray. Inside the voltage window, the rectified DC waveform is passed through to the output and the storage capacitor; outside the voltage window, the power converter is idle and let the output storage capacitor alone supply the load. The beam combiner includes a grating that passes one of the beams undiffracted and diffracts the other beam mainly in the first order. The base plate andor the protective cover of the magnet pole piece has at least one element that provides a geometrical locking of the magnet pole to the base plate andor the protective cover.