  Energy-loss magnetic chiral dichroism (EMCD) is a versatile method for
studying magnetic properties on the nanoscale. However, the classical EMCD
technique is notorious for its low signal to noise ratio (SNR). Here, we study
the theoretical possibilities of using a convergent beam for EMCD. In
particular, we study the influence of detector positioning as well as
convergence and collection angles on the detectable EMCD signal. In addition,
we analyze the expected SNR and give guidelines for achieving optimal EMCD
results.
