Design of a gas scattering energy analyser for the ISIS RFQ accelerator test stand

Author

Duke, J.P. ; Findlay, D.J.S. ; Murdoch, G.R.

Author_Institution

Rutherford Appleton Lab., Chilton, UK

Volume

3

fYear

2001

fDate

2001

Firstpage

2350

Abstract

The design of an apparatus to measure the beam energy of an RFQ, based on multiple scattering of H^- ions in xenon gas, is described. The purpose of the apparatus is to confirm the mean energy and energy spread of the nominal 665 keV beam 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 Hⁱons and measure their energies

Keywords

accelerator RF systems; ion accelerators; linear accelerators; particle beam diagnostics; 665 keV; Ar; H; H^- ions; ISIS RFQ accelerator test stand; drift length; energy spread; gas scattering cell; gas scattering energy analyser; mean energy; Apertures; Assembly; Energy measurement; Intersymbol interference; Laboratories; Neutrons; Particle beams; Particle scattering; Testing; Xenon;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Conference_Location

Chicago, IL

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.987375

Filename

987375