Layout, design and construction of the electrostatic separation system of the LEP e+e- collider
Layout, design and construction of the electrostatic separation system of the LEP e+e- collider
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发表时间：
1988-06
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通讯作者：
W. Kalbreier;K. Kissler;N. Garrel;R. Guinand;R. Keizer
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作者：
W. Kalbreier;K. Kissler;N. Garrel;R. Guinand;R. Keizer
静电分离器将用于LEP对撞机，目前正在建设中的欧洲核子研究中心，以分离电子和正电子束在八个碰撞点在注入和加速。整个系统将包括32个分离罐，每个分离罐长4.5 m，在3 oooc下烘烤后真空度为10-S Pa。在4米长的不锈钢电极之间11厘米的间隙上，工作电场为20 kV/cm;在实验室条件下，每个罐的外推火花率为<10 - 12/hr。寄生模式损耗导致电极加热，因此需要闭环冷却系统来防止由于增加的除气而导致的压力上升。介绍了样机的布置、结构、高压回路和性能。
Electrostatic separators will be used in the LEP Collider, presently under construction at CERN, to separate the electron and positron bunches in the eight collision points during injection and acceleration. The total system Will comprise 32 separator tanks, each 4.5 m long with a vacuum of 10-S Pa after bake-out at 3oooc. The operating electric field is 20 kV/cm across a gap of 11 cm between 4 m long stainless steel electrodes; under laboratory conditions the extrapolated spark rate per tank is < lo-' per hr. Parasitic mode losses cause heating of the electrodes, thus a closed loop cooling system is required to prevent a rise in pressure due to increased outgassing. Layout, construction, HV circuit and performance of the prototype separators are described.