Compensation for booster leakage field in the Duke storage ring

被引：0
作者：
李为 [1 ,2 ]
郝浩 [2 ]
Stepan F.Mikhailov [2 ]
Victor Popov [2 ]
李为民 [1 ]
吴英 [2 ]
机构：
[1] National Synchrotron Radiation Laboratory, University of Science and Technology of China
[2] Triangle University Nuclear Laboratory/Physics Department, Duke University
来源：
Chinese Physics C | 2017年 / 41卷 / 01期
基金：
中国国家自然科学基金;
关键词：
field compensation; feedforward; storage ring; beam orbit;
D O I：
暂无
中图分类号：
TL594 [储存环（对头碰）];
学科分类号：
082701 ;
摘要：
The High Intensity Gamma-ray Source(HIGS) at Duke University is an accelerator-driven Compton gamma-ray source, providing high flux gamma-ray beam from 1 MeV to 100 MeV for photo-nuclear physics research.The HIGS facility operates three accelerators, a linac pre-injector(0.16 GeV), a booster injector(0.16—1.2 GeV),and an electron storage ring(0.24—1.2 GeV). Because of the proximity of the booster injector to the storage ring, the magnetic field of the booster dipoles close to the ring can significantly alter the closed orbit in the storage ring being operated in the low energy region. This type of orbit distortion can be a problem for certain precision experiments which demand a high degree of energy consistency of the gamma-ray beam. This energy consistency can be achieved by maintaining consistent aiming of the gamma-ray beam, and therefore a steady electron beam orbit and angle at the Compton collision point. To overcome the booster leakage field problem, we have developed an orbit compensation scheme. This scheme is developed using two fast orbit correctors and implemented as a feedforward which is operated transparently together with the slow orbit feedback system. In this paper, we will describe the development of this leakage field compensation scheme, and report the measurement results, which demonstrate the effectiveness of the scheme.
引用
收藏
页码：177 / 183
页数：7
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