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Title: CANCELLED Microwave Ion Source and Beam Injection for anAccelerator-Driven Neut ron Source

Abstract

An over-dense microwave driven ion source capable of producing deuterium (or hydrogen) beams at 100-200 mA/cm{sup 2} and with atomic fraction > 90% was designed and tested with an electrostatic low energy beam transport section (LEBT). This ion source was incorporated into the design of an Accelerator Driven Neutron Source (ADNS). The other key components in the ADNS include a 6 MeV RFQ accelerator, a beam bending and scanning system, and a deuterium gas target. In this design a 40 mA D{sup +} beam is produced from a 6 mm diameter aperture using a 60 kV extraction voltage. The LEBT section consists of 5 electrodes arranged to form 2 Einzel lenses that focus the beam into the RFQ entrance. To create the ECR condition, 2 induction coils are used to create {approx} 875 Gauss on axis inside the source chamber. To prevent HV breakdown in the LEBT a magnetic field clamp is necessary to minimize the field in this region. Matching of the microwave power from the waveguide to the plasma is done by an autotuner. They observed significant improvement of the beam quality after installing a boron nitride liner inside the ion source. The measured emittance data are comparedmore » with PBGUNS simulations.« less

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org.:
USDOE. Administrator for National Nuclear Security AdminNonproliferation and National Security Program Direction
OSTI Identifier:
932684
Report Number(s):
LBNL-62514-Ext.-Abs.
R&D Project: Z2IS10 AND Z2IS14; TRN: US0803732
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Conference
Resource Relation:
Conference: Proceedings of the PAC07, Albuquerque, NM,06/25-29/2007
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATORS; APERTURES; BEAM INJECTION; BEAM TRANSPORT; BENDING; BORON NITRIDES; BREAKDOWN; DESIGN; DEUTERIUM; ELECTRODES; ELECTROSTATICS; HYDROGEN; INDUCTION; ION SOURCES; LENSES; LINERS; MAGNETIC FIELDS; NEUTRON SOURCES; WAVEGUIDES; _Ion Source External RF-antenna Planar inductive source Plasmasource

Citation Formats

Vainionpaa, J.H., Gough, R., Hoff, M., Kwan, J.W., Ludewigt,B.A., Regis, M.J., Wallig, J.G., and Wells, R. CANCELLED Microwave Ion Source and Beam Injection for anAccelerator-Driven Neut ron Source. United States: N. p., 2007. Web.
Vainionpaa, J.H., Gough, R., Hoff, M., Kwan, J.W., Ludewigt,B.A., Regis, M.J., Wallig, J.G., & Wells, R. CANCELLED Microwave Ion Source and Beam Injection for anAccelerator-Driven Neut ron Source. United States.
Vainionpaa, J.H., Gough, R., Hoff, M., Kwan, J.W., Ludewigt,B.A., Regis, M.J., Wallig, J.G., and Wells, R. Tue . "CANCELLED Microwave Ion Source and Beam Injection for anAccelerator-Driven Neut ron Source". United States. doi:. https://www.osti.gov/servlets/purl/932684.
@article{osti_932684,
title = {CANCELLED Microwave Ion Source and Beam Injection for anAccelerator-Driven Neut ron Source},
author = {Vainionpaa, J.H. and Gough, R. and Hoff, M. and Kwan, J.W. and Ludewigt,B.A. and Regis, M.J. and Wallig, J.G. and Wells, R.},
abstractNote = {An over-dense microwave driven ion source capable of producing deuterium (or hydrogen) beams at 100-200 mA/cm{sup 2} and with atomic fraction > 90% was designed and tested with an electrostatic low energy beam transport section (LEBT). This ion source was incorporated into the design of an Accelerator Driven Neutron Source (ADNS). The other key components in the ADNS include a 6 MeV RFQ accelerator, a beam bending and scanning system, and a deuterium gas target. In this design a 40 mA D{sup +} beam is produced from a 6 mm diameter aperture using a 60 kV extraction voltage. The LEBT section consists of 5 electrodes arranged to form 2 Einzel lenses that focus the beam into the RFQ entrance. To create the ECR condition, 2 induction coils are used to create {approx} 875 Gauss on axis inside the source chamber. To prevent HV breakdown in the LEBT a magnetic field clamp is necessary to minimize the field in this region. Matching of the microwave power from the waveguide to the plasma is done by an autotuner. They observed significant improvement of the beam quality after installing a boron nitride liner inside the ion source. The measured emittance data are compared with PBGUNS simulations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 27 00:00:00 EST 2007},
month = {Tue Feb 27 00:00:00 EST 2007}
}

Conference:
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