ENERGY MEASURING DEVICE FOR PROTON BEAM

摘要

PROBLEM TO BE SOLVED: To make measurable arbitrary energy value directly by a simple measuring system. SOLUTION: Protons accelerated by an accelerator 100 are guided to a vacuum tube 12. In the vacuum tube, the electrons drawn from an electron gun 14 are controlled by an electron drawing power source 24 so as to match with the kinetic velocity of the proton and both are let run parallel and are made plasma of mixture of protons and electrons. When coupled electrons in excited state return to the base state, it emits Hαlight and the like. The wave length of this light is measured with a spectroscope 18 attached to the vacuum tube at 30 degree, for example. By applying the measured wave length of light to a specific correlation, the kinetic energy of proton can be obtained.