Abstract—

The HV electron cooling system designed at the Budker Institute of Nuclear Physics for the NICA collider is the world’s only setup developed for a collider and makes it possible to simultaneously cool two ion beams with an energy up to 4.5 GeV/u using the magnetized electron flow [1]. Due to the fact that the cooling system should be installed at the NICA collider, the distance between the beam axes of cooling channels corresponds to the distance between collider beams and amounts to 320 mm. This became the first factor affecting the entire structure of the electron-cooling system and limits the maximum possible outer radius of longitudinal field coils. The energy-consumption limitation of 500–700 kW [2] can be considered the other factor, and it directly affects the density of filling the solenoid with the conductor. The design of the central solenoid (cooling solenoid) of the electron-cooling system is described, and it has been developed taking into account the imposed limitations.

中文翻译：

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NICA对撞机高压电子冷却系统的中央电磁阀设计

摘要-

由Budker核物理研究所为NICA对撞机设计的HV电子冷却系统是世界上唯一为对撞机开发的装置，它可以利用磁化电子流同时冷却能量高达4.5 GeV / u的两个离子束[1]。由于必须在NICA对撞机上安装冷却系统，因此冷却通道的光轴之间的距离对应于对撞机光束之间的距离，总计为320 mm。这成为影响电子冷却系统整体结构的第一个因素，并限制了纵向磁场线圈的最大可能外半径。500–700 kW [2]的能耗限制可以被认为是另一个因素，它直接影响螺线管填充导体的密度。