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Persistent URL
http://purl.org/net/epubs/work/12206862
Record Status
Checked
Record Id
12206862
Title
Gas dynamics considerations in a non-invasive profile monitor for charged particle beams
Contributors
V Tzoganis (Cockcroft Inst., Liverpool Univ., and RIKEN Nishina Center)
,
A Jeff (Cockcroft Inst., Liverpool Univ., and CERN)
,
CP Welsch (Cockcroft Inst., and Liverpool Univ.)
Abstract
A non-invasive, gas jet-based, beam profile monitor has been developed in the QUASAR Group at the Cockcroft Institute, UK. This allows on-line measurement of the 2-dimensional transverse profile of particle beams with negligible disturbance to either primary beam or accelerator vacuum. The monitor is suitable for use with beams across a wide range of energies and intensities. In this setup a nozzleskimmer system shapes a thin supersonic gas jet into a curtain. However, the small dimensions of the gas inlet nozzle and subsequent skimmers were shown to be the cause of many operational problems. In this paper, the dynamics of gas jet formation transport and shaping is discussed before an imageprocessing based alignment technique is introduced. Furthermore, experimental results obtained with a 5 keV electron beam are discussed and the effects of gas stagnation pressure on the acquired beam are presented.
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CI
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Language
English (EN)
Type
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Year
Journal Article
Vacuum
109 (2014): 417-424.
doi:10.1016/j.vacuum.2014.07.009
2014
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