Mechanism of electron multipacting with a long-bunch proton beam.
Mechanism of electron multipacting with a long-bunch proton beam.
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DOI：
10.1103/physreve.70.036501
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发表时间：
2004-07
期刊：
影响因子：
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通讯作者：
L. Wang;M. Blaskiewicz;J. Wei;W. Weng;K. Ohmi;R. Macek
中科院分区：
文献类型：
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作者：
L. Wang;M. Blaskiewicz;J. Wei;W. Weng;K. Ohmi;R. Macek
电子的能量增益和运动可以定量地描述电子在长束束质子机器中的多重碰撞机制。由于电子撞击腔体表面时的高能量，强烈的多重击打通常发生在束团的尾部周围。我们研究了电子倍增的几个重要参数，证明了它对束流强度、纵向轮廓形状、横向尺寸、二次发射产额和峰值二次发射产额的能量是敏感的。我们的分析、模拟和实验都是一致的。
The energy gain and motion of electrons can quantitatively describe the mechanism of electron multipacting in a long-bunched proton machine. Strong multipacting usually happens around the bunches' tails due to the high energy of electrons when they hit the chamber surface. We investigated several important parameters of electron multipacting, proving that it is sensitive to the beam's intensity, the shape of its longitudinal profile, its transverse size, the secondary emission yield, and the energy at peak secondary emission yield. Our analyses, simulations, and experiments are all in agreement.