用于诊断调制质子束团的横向相干跃迁辐射
Transverse coherent transition radiation for diagnosis of modulated proton bunches
摘要：
分析了相对论粒子束团穿过导体表面时产生的横向相干跃迁辐射。当束半径小于辐射波长时，聚束在横向于聚束轴的方向上发射偶极状辐射。辐射波长由粒子束的纵向结构限定。被认为是特定的情况下修改的质子束在等离子体中的传播，但仍然携带未调制的电流。具有恒定电流的半径调制聚束发射轴对称辐射。软管束团在软管平面内发射反对称辐射。对于现有的质子束团，TCTR场幅度可以达到100 kV/m。
英文摘要：
Transverse coherent transition radiation (TCTR) emitted by a relativistic particle bunch traversing a conducting surface is analyzed. The bunch emits dipole-like radiation in the direction transverse to the bunch axis when the beam radius is smaller than the radiation wavelength. The radiation wavelength is defined by the longitudinal structure of the particle bunch. The particular case of proton bunches modified by propagation in plasma, but still carrying an unmodulated current is considered. Radius-modulated bunches with a constant current emit axially symmetric radiation. Hosed bunches emit antisymmetric radiation in the plane of hosing. The TCTR field amplitude may reach 100 kV/m for the existing proton bunches.
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