The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
S. Sasaki, M. Hosaka, M. Katoh, T. Konomi, A. Miyamoto, and N. Yamamoto, “Analyses of Light's Orbital Angular Momentum from Helical Undulator Harmonics”, in Proc. 6th Int. Particle Accelerator Conf. (IPAC'15), Richmond, VA, USA, May 2015, pp. 1563-1566, doi:10.18429/JACoW-IPAC2015-TUPWA061