title: The front end test stand high performance H- ion source at Rutherford Appleton Laboratory.
abstract: The aim of the front end test stand (FETS) project is to demonstrate that chopped low energy beams of high quality can be produced. FETS consists of a 60 mA Penning Surface Plasma Ion Source, a three solenoid low energy beam transport, a 3 MeV radio frequency quadrupole, a chopper, and a comprehensive suite of diagnostics. This paper details the design and initial performance of the ion source and the laser profile measurement system. Beam current, profile, and emittance measurements are shown for different operating conditions.
authors.affiliation: STFC, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX14 0QX, United Kingdom. dan.faircloth@stfc.ac.uk
authors.forename: D C
authors.initials: DC
authors.lastname: Faircloth
authors.forename: S
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authors.lastname: Lawrie
authors.forename: A P
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authors.lastname: Letchford
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authors.lastname: Gabor
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authors.lastname: Wise
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authors.lastname: Whitehead
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authors.lastname: Wood
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authors.lastname: Westall
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authors.lastname: Findlay
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authors.lastname: Perkins
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authors.lastname: Savage
authors.forename: D A
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authors.lastname: Lee
authors.forename: J K
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authors.lastname: Pozimski