Measurements and effects of backstreaming ions produced at bremsstrahlung converter target in Dragon-I linear induction accelerator
- Institute of Fluid Physics, CAEP, Mianyang, Sichuan 621900 (China)
- School of Information Science and Technology, University of Science and Technology of China, Hefei 230027 (China)
Positive ions released from x-ray converter target impacted by electron beam of millimeter spot size can be trapped and accelerated in the incident beam's potential well. As the ions move upstream, the beam will be pinched first and then defocused at the target. Four Faraday cups are used to collect backstreaming ions produced at the bremsstrahlung converter target in Dragon-I linear induction accelerator (LIA). Experimental and theoretical results show that the backstreaming positive ions density and velocity are about 10{sup 21}/m{sup 3} and 2-3 mm/{mu}s, respectively. The theoretical and experimental results of electron beam envelope with ions and without ions are also presented. The discussions show that the backstreaming positive ions will not affect the electron beam focusing and envelope radius in Dragon-I LIA.
- OSTI ID:
- 22053973
- Journal Information:
- Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 4 Vol. 81; ISSN 0034-6748; ISSN RSINAK
- Country of Publication:
- United States
- Language:
- English
Similar Records
Beam-target interaction experiments for Bremsstrahlung converter applications
The effect of trapped backstreaming ions on beam focus and in radiographic accelerators