Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9845770 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2005 | 8 Pages |
Abstract
The design and operation of an apparatus to measure the beam energy of a radio frequency quadrupole (RFQ) particle accelerator, based on multiple scattering of Hâ ions in xenon gas, is described. The purpose of the apparatus is to confirm the mean energy and energy spread of the nominal 665Â keV beam of Hâ ions from the ISIS RFQ. This RFQ, after comprehensive testing, is intended to replace the existing Cockcroft-Walton pre-injector on the ISIS spallation neutron source at the Rutherford Appleton Laboratory (RAL). The basis of the apparatus is a set of two cascaded assemblies each consisting of a gas scattering cell, a drift length and three small apertures, which together reduce the peak intensity of the beam current sufficiently to allow a semiconductor charged particle detector to be used to detect individual Hâ ions and measure their energies.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
J.P. Duke, D.J.S. Findlay, A.P. Letchford, G.R. Murdoch, J.W.G. Thomason,