The time‐of‐flight neutral particle analyzer and its calibration system for the RFX experiment

A simple and low cost time‐of‐flight neutral particle analyzer has been operated on the RFX experiment. Simplifications have been introduced with respect to already existing similar devices, obtaining a low cost and reliable system. Good performance has been reached for hydrogen plasmas producing charge exchange H neutrals whose energy is lower than 3000 eV. Moreover a simple ion beam system has been projected and built to calibrate the electron multipliers used on the time‐of‐flight analyzer.