DESIGN OF A NON-INTERCEPTING BEAM DIAGNOSTIC DEVICE USING NEUTRAL BEAM FLUORESCENCE METHOD

摘要

The forward neutral beam from deflecting magntic field carries some characteristic properties of high intensity particle beams, such as profile, emittance etc. Therefore a reliable measurement of neutral beam fluorescence can be used to develop a fast and non-interceptive beam diagnostic tool. A non-intercepting beam emittance (profile) monitor using neutral beam fluorescence method has being constructed at Peking University. The monitor is designed to measure the transverse emittance in both directions on a low energy intense proton beams at the ion source (IS) test bench. The neutral particles are produced in the space charge compensation (SCC) zone. The mechanical design has been completed. The implementation, measurement, and comparison to multi-slit single-wire type emittance monitor will be carried out in the near future. The details of design and some preliminary results of measurement will be presented in this paper.