Magnetic field errors tolerances of Nuclotron booster Andrey Butenko, Olha Kazinova, Sergey Kostromin, Vladimir Mikhaylov, Alexey Tuzikov and Hamlet Khodzhibagiyan EPJ Web Conf., 177 (2018) 08001 Published online: 18 April 2018 DOI: 10.1051/epjconf/201817708001