1. An apparatus for irradiating a tumor in a patient with charged particles extracted from a synchrotron, said apparatus configured to restrict movement of at least one arm or leg of the patient out of a charged particle path of the synchrotron, said apparatus comprising: a charged particle irradiation system comprising: an exit nozzle; a first about horizontal charged particle beam path from said exit nozzle to a rotationally variable incident portion of the patient; and a second about horizontal charged particle beam path from the rotationally variable incident portion of the patient to the tumor; a rotatable platform configured to semi-constrain the patient in a laying position, wherein said rotatable platform rotates about an axis aligned with gravity; a semi-restraint system configured to hold at least one of the arm and the leg of the patient out of the first about horizontal charged particle beam path from said exit nozzle to the patient, wherein said charged particle irradiation system delivers the charged particle in at least five rotation positions of said rotatable platform.