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TY - CONF AU - Liang, H. AU - Huang, J. AU - Jiang, C. AU - Liu, T. AU - Qin, B. AU - Tang, K. AU - Xie, Y. AU - Yang, J. AU - Ye, J.Q. AU - Yu, T. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - PRELIMINARY MAGNETIC FIELD CALCULATION OF A 30-DEGREE DIPOLE MAGNET J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - Preliminary design and field calculation of a 30-degree H-type dipole which can be applied to the beamline is introduced in this paper. According to the phys-ical requirements, 2D and 3D models are built and ana-lysed using OPERA. For achieving the magnetic field specifications, air slots are adopted, and trapezoidal shim on pole surface is used to improve the magnetic field error. Rogowski curve and harmonic shim at the pole end is used to reduce the integral magnetic field error and the higher order harmonic field error. PB - JACoW Publishing CP - Geneva, Switzerland SP - 4204 EP - 4206 KW - dipole KW - simulation KW - proton KW - operation KW - laser DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-THPTS043 UR - http://jacow.org/ipac2019/papers/thpts043.pdf ER -