Title :
Beam instability and correction for "DRAGON-I"
Author :
Zhang, Wenwei ; Dai, Zhiyong ; Li, Hong ; Jiang, Wei ; Zhang, Kaizhi ; Li, Jin ; Deng, Jianjun ; Zhang, Linwen ; Shi, Jinshui
Author_Institution :
Inst. of Fluid Phys., Mianyang
Abstract :
"Dragon-I" is a high current pulsed electron linear induction accelerator designed and constructed in IFP/CAEP. It generates a 20 MeV, 2.5 kA, 60ns pulsed electron beam. The whole facility has three parts: injector; accelerator and beam focus system. The accelerator consists of 72 induction cells and 18 connection cells. A solenoid was installed inside each cell forming the beam transport system. During the initial beam test both high frequency and low frequency beam centroid oscillation were found. A lot of simulation and experiment investigations were done to obtain the transverse impedance of the cells and to reduce the corkscrew motion of the electron beam. Details of both the simulation and the experimental methods to control the instability are presented.
Keywords :
electron accelerators; electron beams; linear accelerators; particle beam focusing; particle beam injection; solenoids; 18 connection cells; 72 induction cells; DRAGON-I; IFP-CAEP; beam centroid oscillation; beam instability; beam transport system; corkscrew motion; current 2.5 kA; electron volt energy 20 MeV; high current pulsed electron linear induction accelerator; injector; pulsed electron beam focus system; solenoid; time 60 ns; Electron accelerators; Electron beams; Frequency; Impedance; Induction generators; Linear accelerators; Particle beams; Pulse generation; Solenoids; Testing;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4439967
