A real-time beam current density meter

TL;DR

This paper introduces a real-time beam current density meter capable of measuring mean current density of charged particle beams, with simulations and tests demonstrating its effectiveness for ion beams.

Contribution

The paper presents a novel real-time current density meter that uses collimation and suppression techniques, validated through simulations and experimental testing.

Findings

Effective suppression of secondary electrons achieved

Successful measurement of 105 keV Ar7+ ion beam current density

Device operates in real-time with accurate readings

Abstract

We have developed a real-time beam current density meter for charged particle beams. It measures the mean current density by collimating a uniform and large diameter primary beam. The suppression of the secondary electrons and the deflection of the beam were simulated, and it was tested with a 105 keV Ar7+ ion beam.