发明授权
US09408290B2 Method and apparatus for recirculation with control of synchrotron radiation
有权
用于同步加速器辐射控制的再循环方法和装置
- 专利标题: Method and apparatus for recirculation with control of synchrotron radiation
- 专利标题(中): 用于同步加速器辐射控制的再循环方法和装置
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申请号: US14526597申请日: 2014-10-29
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公开(公告)号: US09408290B2公开(公告)日: 2016-08-02
- 发明人: David R. Douglas , Christopher Tennant
- 申请人: JEFFERSON SCIENCE ASSOCIATES, LLC
- 申请人地址: US VA Newport News
- 专利权人: JEFFERSON SCIENCE ASSOCIATES, LLC
- 当前专利权人: JEFFERSON SCIENCE ASSOCIATES, LLC
- 当前专利权人地址: US VA Newport News
- 主分类号: H01J29/56
- IPC分类号: H01J29/56 ; H05H13/04 ; H05H7/00
摘要:
A method for controlling beam quality degradation from ISR and CSR and stabilizing the microbunching instability (μBI) in a high brightness electron beam. The method includes providing a super-periodic second order achromat line with each super period being individually linearly achromatic and isochronous, setting individual superperiod tunes to rational fractions of an integer (such as 4th or 6th integers), setting individual bend angles to be as small as practical to reduce driving terms due to dispersion and dispersive angle, and setting bend radii as large enough to suppress ISR but not negatively affect the radial dependence of CSR. The method includes setting the structure of the individual superperiods to minimize bend plane beam envelope values in the dipoles to reduce betatron response to a CSR event at a dispersed location, increasing beam angular divergence, and creating dispersion nodes in the dipoles to similarly reduce response to CSR events, and limit R56 modulation in order to mitigate μBI.