中国物理B ›› 2007, Vol. 16 ›› Issue (8): 2343-2348.doi: 10.1088/1009-1963/16/8/031

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International Linear Collider damping ring lattice design with two wiggler sections

郭之虞1, 高杰2, 孙一鹏3   

  1. (1)Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, China; (2)Key Laboratory of Heavy Ion Physics (MOE) and School of Physics, Peking University, Beijing 100871, China; (3)Key Laboratory of Heavy Ion Physics (MOE) and School of Physics, Peking University, Beijing 100871, China;Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, China
  • 收稿日期:2006-10-10 修回日期:2006-12-27 出版日期:2007-08-20 发布日期:2007-08-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No~10525525).

International Linear Collider damping ring lattice design with two wiggler sections

Sun Yi-Peng(孙一鹏)a)b)† , Gao Jie(高杰)b), and Guo Zhi-Yu(郭之虞)a)   

  1. a Key Laboratory of Heavy Ion Physics (MOE) and School of Physics, Peking University, Beijing 100871, China; b Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, China
  • Received:2006-10-10 Revised:2006-12-27 Online:2007-08-20 Published:2007-08-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No~10525525).

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摘要： The International Linear Collider (ILC), which is based on super-conducting RF acceleration technology, requires the damping rings to provide beams with extremely small equilibrium emittance, and large acceptance to ensure good injection efficiency for high-emittance, and high-energy spread beam from the positron source. In order to reduce the cost for ILC damping rings, an alternative lattice which is different from the baseline configuration design has been designed with modified FODO arc cells, and the total quadrupole number has been reduced by half. At the same time, to decrease the total cost involved in constructing access shafts needed to supply power, cryogenics etc. for the wigglers and other systems, the number of wiggler sections is decreased from 8 to 4, and further to 2. This new lattice has been optimized to have a good dynamic aperture. This alternative ILC damping ring lattice design will reduce the cost largely as compared with the baseline design.

关键词: ILC damping ring, FODO arc cell, wiggler sections, dynamic aperture

Abstract: The International Linear Collider (ILC), which is based on super-conducting RF acceleration technology, requires the damping rings to provide beams with extremely small equilibrium emittance, and large acceptance to ensure good injection efficiency for high-emittance, and high-energy spread beam from the positron source. In order to reduce the cost for ILC damping rings, an alternative lattice which is different from the baseline configuration design has been designed with modified FODO arc cells, and the total quadrupole number has been reduced by half. At the same time, to decrease the total cost involved in constructing access shafts needed to supply power, cryogenics etc. for the wigglers and other systems, the number of wiggler sections is decreased from 8 to 4, and further to 2. This new lattice has been optimized to have a good dynamic aperture. This alternative ILC damping ring lattice design will reduce the cost largely as compared with the baseline design.

Key words: ILC damping ring, FODO arc cell, wiggler sections, dynamic aperture

中图分类号:  (Storage rings and colliders)

  • 29.20.db
29.27.Ac (Beam injection and extraction) 29.27.Bd (Beam dynamics; collective effects and instabilities)