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TY  - CONF
AU  - Wu, W.
AU  - Liang, Y.
AU  - Mei, E.M.
AU  - Ni, D.S.
AU  - Ou, X.J.
AU  - Yang, W.J.
AU  - Zheng, S.J.
AU  - Zhou, L.
ED  - Zhao, Hongwei
ED  - He, Yuan
ED  - Li, Lu
ED  - Schaa, Volker RW
TI  - Multipole Magnets for the HIAF Fragment Separator Using  the Canted-Cosine-Theta (CCT) Geometry
J2  - Proc. of HIAT2018, Lanzhou, China, 22-26 October 2018
CY  - Lanzhou, China
T2  - International Conference on Heavy Ion Accelerator Technology
T3  - 14
LA  - english
AB  - The fragment separator of the HIAF (High Intensity Heavy Ion Accelerator Facility) project called HFRS re-quires quadrupoles with high gradients (11.4 T/m) and large bores (gap width of 420 mm). The iron dominated magnets with superconducting coils have been widely used in the similar facilities such as A1900, BigRIPS, Super­FRS and RISP with the advantages of low request for coils installation precision, simple fabrication and low cost, but they have large cold mass and helium contain-ment, which result in long time cooling down and high pressure rise during a quench. In addition, due to iron saturation, it is hard to guarantee on the field quality in the operated field range. A new coil dominated design based on the Canted­Cosine­Theta geometry is presented for HFRS, which is expected to overcome these problems. The design superimposes several layers of oppositely wound helical windings to generate high quality quadru-pole. Sextupole, octupole and steering dipole can also be easily integrated to reduce the length of cryostat. This paper reports the detailed design of HFRS multiplets based on the CCT concept and the construction of a sub-scale prototype.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 170
EP  - 174
KW  - quadrupole
KW  - dipole
KW  - sextupole
KW  - octupole
KW  - superconductivity
DA  - 2019/11
PY  - 2019
SN  - 978-3-95450-203-5
DO  - doi:10.18429/JACoW-HIAT2018-THOBA01
UR  - http://jacow.org/hiat2018/papers/thoba01.pdf
ER  -