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TY - CONF AU - Ma, P.F. AU - Guan, X. AU - Pu, Y.H. AU - Qiao, J. AU - Tang, R. AU - Wang, C.P. AU - Wang, X.W. AU - Xie, X.C. AU - Xing, Q.Z. AU - Yang, F. AU - Yu, X.D. AU - Zheng, S.X. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Decouple Transverse Coupled Beam in the DTL with Tilted PMQs J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - The coupling of the beam is widely studied in the accelerator physics field. Projected transverse emittances easily grow up if the beam is transversely-coupled. If we decouple the transverse coupled beam, the transverse emittance can be small. The matrix approach based on the symplectic transformation theory for decoupling the coupled beam is summarized. For a proton accelerator, the transverse coupled beam is introduced by an RFQ tilted by 45°. The beam is decoupled with the first five tilted quadrupoles mounted in the DTL section. A study on the gradient choice of the quadrupoles and the space charge effect is given in this paper. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1785 EP - 1788 KW - emittance KW - coupling KW - DTL KW - rfq KW - cavity DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-TUPAB170 UR - https://jacow.org/ipac2021/papers/tupab170.pdf ER -