标题： 费米国家加速器实验室光子注入器的平束实验 显示英文标题

标题： The Flat Beam Experiment at the FNAL Photoinjector

摘要： 一种产生具有高横向发射度比的电子束的技术，即“扁平”束，由Brinkmann、Derbenev和Floettmann提出。 [1] 阴极被浸入螺线管磁场中的射频激光枪；结果是从圆形激光点发出的束具有净角动量。 随后通过一个横向自由度之间相位提前有90度差异的四极子通道，导致形成扁平束。 在费米实验室A0光电注入器上正在进行实验研究。 到目前为止，观察到的横向发射度比高达50，并且结果与模拟结果有很好的一致性。 [1] R. Brinkmann, Ya. Derbenev, K. Floettmann, "用于直线对撞机的扁平束电子源。" TESLA注释99-09，1999年4月。 显示英文摘要

摘要： A technique for production of an electron beam with a high transverse emittance ratio. a "flat" beam, has been proposed by Brinkmann, Derbenev, and Floettmann.[1] The cathode of an RF-laser gun is immersed in a solenoidal magnetic field; as a result the beam emitted from a round laser spot has a net angular momentum. Subsequent passage through a quadrupole channel that has a 90 degree difference in phase advance between the transverse degrees of freedom results in a flat beam. Experimental study is underway at the Fermilab A0 Photoinjector. Thus far, transverse emittance ratios as high as 50 have been observed, and the results are in substantial agreement with simulation. [1] R. Brinkmann, Ya. Derbenev, K. Floettmann, "A Flat Beam Electron Source for Linear Colliders." TESLA Note 99-09, April 1999.