skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Application of 3D Code IBSimu for Designing an H{sup -}/D{sup -} Extraction System for the Texas A and M Facility Upgrade

Abstract

A three dimensional ion optical code IBSimu is being developed at the University of Jyvaeskylae. So far the plasma modelling of the code has been restricted to positive ion extraction systems, but now a negative ion plasma extraction model has been added. The plasma model has been successfully validated with simulations of the Spallation Neutron Source (SNS) ion source extraction both in cylindrical symmetry and in full 3D, also modelling electron beam dumping and ion beam tilt. A filament-driven multicusp ion source has been installed at the Texas A and M University Cyclotron Institute for production of H{sup -} and D{sup -} beams as a part of the facility upgrade. The light ion beams, produced by the ion source, are accelerated with the K150 cyclotron for production and reacceleration of rare isotopes. The extraction system for the ion source was designed with IBSimu. The extraction features a water-cooled puller electrode with a permanent magnet dipole field for dumping the co-extracted electrons and a decelerating Einzel lens for adjusting the beam focusing for further beam transport. The ion source and the puller electrode are tilted at 4 degree angle with respect to the beam line. The extraction system can handle H{supmore » -} and D{sup -} beams with final beam energies from 5 keV to 15 keV using the same geometry, only adjusting the electrode voltages. So far, 24 {mu}A of H{sup -} and 15 {mu}A of D{sup -} have been extracted from the cyclotron.« less

Authors:
; ;  [1]; ;  [2]
  1. Department of Physics, University of Jyvaeskylae, Jyvaeskylae, 40500 (Finland)
  2. Texas A and M University, Cyclotron Institute, College Station, TX 77843 (United States)
Publication Date:
OSTI Identifier:
21611689
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: 10.1063/1.3637415; (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:
43 PARTICLE ACCELERATORS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BEAM EXTRACTION; BEAM PRODUCTION; BEAM TRANSPORT; COMPUTERIZED SIMULATION; CYCLOTRONS; DEUTERIUM IONS; ELECTRIC POTENTIAL; ELECTRON BEAMS; ELECTRONS; HYDROGEN IONS 1 MINUS; I CODES; ION BEAMS; ION SOURCES; KEV RANGE; LIGHT IONS; NEUTRON SOURCES; PERMANENT MAGNETS; PLASMA; PLASMA SIMULATION; THREE-DIMENSIONAL CALCULATIONS; ACCELERATORS; ANIONS; BEAMS; CHARGED PARTICLES; COMPUTER CODES; CYCLIC ACCELERATORS; ELEMENTARY PARTICLES; ENERGY RANGE; EQUIPMENT; FERMIONS; HYDROGEN IONS; IONS; LEPTON BEAMS; LEPTONS; MAGNETS; PARTICLE BEAMS; PARTICLE SOURCES; RADIATION SOURCES; SIMULATION

Citation Formats

Kalvas, T, Tarvainen, O, Aerje, J, Clark, H, and Brinkley, J. Application of 3D Code IBSimu for Designing an H{sup -}/D{sup -} Extraction System for the Texas A and M Facility Upgrade. United States: N. p., 2011. Web. doi:10.1063/1.3637415.
Kalvas, T, Tarvainen, O, Aerje, J, Clark, H, & Brinkley, J. Application of 3D Code IBSimu for Designing an H{sup -}/D{sup -} Extraction System for the Texas A and M Facility Upgrade. United States. doi:10.1063/1.3637415.
Kalvas, T, Tarvainen, O, Aerje, J, Clark, H, and Brinkley, J. Mon . "Application of 3D Code IBSimu for Designing an H{sup -}/D{sup -} Extraction System for the Texas A and M Facility Upgrade". United States. doi:10.1063/1.3637415.
@article{osti_21611689,
title = {Application of 3D Code IBSimu for Designing an H{sup -}/D{sup -} Extraction System for the Texas A and M Facility Upgrade},
author = {Kalvas, T and Tarvainen, O and Aerje, J and Clark, H and Brinkley, J},
abstractNote = {A three dimensional ion optical code IBSimu is being developed at the University of Jyvaeskylae. So far the plasma modelling of the code has been restricted to positive ion extraction systems, but now a negative ion plasma extraction model has been added. The plasma model has been successfully validated with simulations of the Spallation Neutron Source (SNS) ion source extraction both in cylindrical symmetry and in full 3D, also modelling electron beam dumping and ion beam tilt. A filament-driven multicusp ion source has been installed at the Texas A and M University Cyclotron Institute for production of H{sup -} and D{sup -} beams as a part of the facility upgrade. The light ion beams, produced by the ion source, are accelerated with the K150 cyclotron for production and reacceleration of rare isotopes. The extraction system for the ion source was designed with IBSimu. The extraction features a water-cooled puller electrode with a permanent magnet dipole field for dumping the co-extracted electrons and a decelerating Einzel lens for adjusting the beam focusing for further beam transport. The ion source and the puller electrode are tilted at 4 degree angle with respect to the beam line. The extraction system can handle H{sup -} and D{sup -} beams with final beam energies from 5 keV to 15 keV using the same geometry, only adjusting the electrode voltages. So far, 24 {mu}A of H{sup -} and 15 {mu}A of D{sup -} have been extracted from the cyclotron.},
doi = {10.1063/1.3637415},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1390,
place = {United States},
year = {2011},
month = {9}
}