muCool: a next step towards efficient muon beam compression I. Belosevic, A. Antognini, Y. Bao, A. Eggenberger, M. Hildebrandt, R. Iwai, D. M. Kaplan, K. S. Khaw, K. Kirch, A. Knecht et al. (8 more) Eur. Phys. J. C, 79 5 (2019) 430 Published online: 21 May 2019 DOI: 10.1140/epjc/s10052-019-6932-z