Author:
Lyu M.B.,Zhao L.X.,Ma L.Z.,Yang J.,Zhang J.J.,Wu W.,Zhang X.,You W.,Yao Q.G.
Abstract
Abstract
Space Environment Simulation and Research Infrastructure
(SESRI) is a new national research infrastructure under construction
at Harbin Institute of Technology (HIT) in China. Its 300-MeV proton
and heavy ion accelerator is a major radiation source, and a compact
synchrotron has been designed with a circumference of less than 44
m. The synchrotron dipoles are essential components of the
accelerator, and they have been designed and tested carefully to
meet the stringent physical requirements. The measured transverse
field homogeneity is less than 2 × 10-4 from 0.2 T to
1.4 T and roughly agrees with the simulated results. With a
modified linear programming algorithm, the integral magnetic field
uniformity within 0.2–1.1 T is optimised from 6 × 10-4
to 1.5 × 10-4, and the corresponding multi-pole
field-component errors are greatly reduced. By shortening the pole
ends, the reproducibility of integral field among six magnets at
0.2 T is less than 3 × 10-4. In addition, the transient
effect of the magnetic field is also evaluated and tested. Through
analysis of the transient effect and structural strength, low-carbon
steel and stainless steel are selected for the side plates and end
plates, respectively. According to the transient measurement
results, the feedforward compensation can be implemented to produce
a more accurate current waveform. On 1 January 2022, the beam was
successfully accumulated with the preset current waveform, and the
beam intensity met the design requirements.
Subject
Mathematical Physics,Instrumentation
Cited by
1 articles.
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1. Bump Magnets for Injection System in SESRI;IEEE Transactions on Applied Superconductivity;2024-08