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为减少增强器弯转磁铁的交变磁场在真空室内感应的涡流对主磁场的干扰 ,SSRF增强器采用了椭圆截面的薄壁不锈钢真空室 ,并成功研制出样机。本文描述了增强器真空系统总体设计、真空室的材料选择、结构设计和物理计算 (如涡流对主磁场的影响、真空室的真空负载变形、同步辐射光对真空室温升影响和真空室内压强分布 ) ,介绍了加工工艺。
In order to reduce the disturbance of the main magnetic field caused by the eddy current induced in the vacuum chamber by the alternating magnetic field of the turning magnet of the booster, the SSRF booster adopts the thin-walled stainless steel vacuum chamber of oval cross-section and successfully developed the prototype. This article describes the overall design of enhancer vacuum system, material selection of vacuum chamber, structural design and physical calculation (such as the impact of eddy current on the main magnetic field, vacuum load deformation of the vacuum chamber, synchrotron radiation on the vacuum chamber temperature rise and vacuum chamber pressure Distribution), introduced the processing technology.