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@inproceedings{li:ipac2021-mopab198,
author = {Y. Li and Y.W. An and Z.P. Li and S.Y. Xu},
title = {{Study on Magnet Sorting of the CSNS/RCS Dipoles}},
booktitle = {Proc. IPAC'21},
pages = {665--667},
eid = {MOPAB198},
language = {english},
keywords = {dipole, closed-orbit, MMI, neutron, controls},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-MOPAB198},
url = {https://jacow.org/ipac2021/papers/mopab198.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-MOPAB198},
abstract = {{The 1.6GeV rapid cycling synchrotron (RCS) of the China Spallation Neutron Source (CSNS) is a high-power pulsed proton machine aiming for 500kW output beam power. Now, the routine output beam power has been increased to 100kW. However, the horizontal bare orbit in the ring is large (15mm) and the number of correctors is small, which brings great challenges to the ramp-up of beam power. It is found that the bare orbit in AC mode is 3-4mm larger than that in DC mode. The reason is that the AC dipoles field error is larger than DC dipoles field error. Therefore, it is proposed to sort dipoles again according to the AC dipoles field error. In order to reduce the risk of beam commissioning, fewer magnets should to be moved to achieve smaller orbit. The best results of moving two to six magnets were calculated. After sorting, the orbit can be reduced by 3-4mm, which reduces the difficulty of orbit correction.}},
}