Investigation of the hybrid electron linac with negative group velocity

2nd Conference on Plasma & Laser Research and Technologies

Savin, E.A.^1 ; Alekhanov, R.Yu^1 ; Bulanov, A.V.^1 ; Kaminskiy, V.I.^1 ; Matsievskiy, S.V.^1 ; Sobenin, N.P.^1

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoye shosse 31, Moscow

115409, Russia^1

关键词: Accelerating structure;    Beam dynamics simulations;    Hybrid accelerator;    Negative group velocity;    Power reflection;    RF characteristics;    Structure efficiencies;    Travelling waves;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/747/1/012078/pdf
DOI  :  10.1088/1742-6596/747/1/012078

来源: IOP

【 摘 要 】

Hybrid accelerator, incorporating travelling wave (TW) and standing wave (SW) structures is proposed and discussed. Accelerator can sum up an RF focusing in the SW buncher and lower losses in the TW accelerating structure walls. Moreover, the structure without dumping load is proposed. Input power and beam loading are chosen to minimize power reflection from buncher maintain travelling wave regime in the accelerating structure while beam loading is on. In this case SW buncher operates as a dumping load, so all input power either goes to beam or dissipates in the wall losses, it increases structure efficiency. RF characteristics and beam dynamics simulations have been performed.