Evaluation of the Hubbell rectangular source integral using Haar wavelets method

•A numerical integration method using Haar wavelets is detailed.•Hubbell rectangular source integral is estimated with Haar wavelets method.•Convergence study of the Haar wavelet method is performed.•Comparison with earlier results is presented.

Haar wavelets numerical integration method is exposed and used for evaluating the Hubbell rectangular source integral. The method convergence is studied to get the minimum iteration number for a desired precision. Haar wavelets results are finally compared to those obtained with other integration methods.