1. An apparatus using charged particles for irradiation of a tumor of a patient, comprising: a synchrotron comprising multi-axis control, said multi-axis control comprising: an energy control system, comprising; a magnetic sensor, said magnetic sensor proximate a bending magnet in said synchrotron, wherein during use said energy control system uses output from said magnetic sensor in control of an energy of the charged particles; and an intensity control system, wherein during use said intensity control system uses a current generated by the charged particles in control of an intensity of the charged particles, wherein the control of the energy and said control of the intensity occurs during extraction.