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Title: Latest Results from the Front End Test Stand High Performance H{sup -} Ion Source at RAL

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 high power Penning Surface Plasma Ion Source, a 3 solenoid LEBT, a 3 MeV RFQ, a chopper and a comprehensive suite of diagnostics. This paper briefly outlines the status of the project, hardware installation and modifications. Results from experiments running the H{sup -} ion source at 2 ms pulse length are detailed: the discharge current is varied between 20 A and 50 A. The discharge repetition rate is varied between 12.5 and 50 Hz. Hydrogen and Caesium vapour flow rates are varied. The effect of electrode surface temperature and beam current droop are discussed. Peak beam currents of over 60 mA for 2 ms pulse length can be achieved. Normalised r.m.s emittances of 0.3 {pi}mm.mrads at the exit of the LEBT are presented for different source conditions.

Authors:
; ; ; ; ; ;  [1]
  1. STFC, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom)
Publication Date:
OSTI Identifier:
21611664
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1390; Journal Issue: 1; Conference: 2. international symposium on negative ions, beams and sources, Takayama City (Japan), 16-19 Nov 2010; Other Information: DOI: 10.1063/1.3637390; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 07 ISOTOPES AND RADIATION SOURCES; BEAM CURRENTS; CESIUM; ELECTRIC DISCHARGES; HYDROGEN; HYDROGEN IONS 1 MINUS; ION SOURCES; MEV RANGE; PERFORMANCE; PLASMA; PLASMA DIAGNOSTICS; SOLENOIDS; ALKALI METALS; ANIONS; CHARGED PARTICLES; CURRENTS; ELECTRIC COILS; ELECTRICAL EQUIPMENT; ELEMENTS; ENERGY RANGE; EQUIPMENT; HYDROGEN IONS; IONS; METALS; NONMETALS

Citation Formats

Faircloth, D. C., Lawrie, S. R., Letchford, A. P., Gabor, C., Whitehead, M., Wood, T., and Perkins, M. Latest Results from the Front End Test Stand High Performance H{sup -} Ion Source at RAL. United States: N. p., 2011. Web. doi:10.1063/1.3637390.
Faircloth, D. C., Lawrie, S. R., Letchford, A. P., Gabor, C., Whitehead, M., Wood, T., & Perkins, M. Latest Results from the Front End Test Stand High Performance H{sup -} Ion Source at RAL. United States. doi:10.1063/1.3637390.
Faircloth, D. C., Lawrie, S. R., Letchford, A. P., Gabor, C., Whitehead, M., Wood, T., and Perkins, M. Mon . "Latest Results from the Front End Test Stand High Performance H{sup -} Ion Source at RAL". United States. doi:10.1063/1.3637390.
@article{osti_21611664,
title = {Latest Results from the Front End Test Stand High Performance H{sup -} Ion Source at RAL},
author = {Faircloth, D. C. and Lawrie, S. R. and Letchford, A. P. and Gabor, C. and Whitehead, M. and Wood, T. and Perkins, M.},
abstractNote = {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 high power Penning Surface Plasma Ion Source, a 3 solenoid LEBT, a 3 MeV RFQ, a chopper and a comprehensive suite of diagnostics. This paper briefly outlines the status of the project, hardware installation and modifications. Results from experiments running the H{sup -} ion source at 2 ms pulse length are detailed: the discharge current is varied between 20 A and 50 A. The discharge repetition rate is varied between 12.5 and 50 Hz. Hydrogen and Caesium vapour flow rates are varied. The effect of electrode surface temperature and beam current droop are discussed. Peak beam currents of over 60 mA for 2 ms pulse length can be achieved. Normalised r.m.s emittances of 0.3 {pi}mm.mrads at the exit of the LEBT are presented for different source conditions.},
doi = {10.1063/1.3637390},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1390,
place = {United States},
year = {2011},
month = {9}
}