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Title: Radially uniform circular sweep of ion beam

Abstract

A spiral sweep of the ion beam was suggested to provide sufficiently uniform irradiation of a circular target. It is shown that if the beam radius is small enough, the radius of the beam center should increase as a square root of time to provide uniform radial irradiation of the target. In the complex for Boron Neutron Capture Therapy developed at the Budker Institute of Nuclear Physics, the proton beam sweep will be performed by a sweeper with uniform magnetic field with strength up to 500 G and axial length {approx}20 cm, rotating at 100-2000 Hz, and scanning over the radius at a 1-10 Hz frequency. The sweeper field is produced by four longitudinal flat current windings placed near the inner walls of a box-shaped yoke with the inner opening of a square cross section. A similar sweeping technique can be used in a 200 keV oxygen implanter, which is also under development at the Budker Institute.

Authors:
; ; ; ; ; ;  [1]
  1. Budker Institute of Nuclear Physics, av. Lavrentieva, 11, Novosibirsk 630090 (Russian Federation)
Publication Date:
OSTI Identifier:
20779099
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 77; Journal Issue: 3; Conference: 11. international conference on ion sources, Caen (France), 12-16 Sep 2005; Other Information: DOI: 10.1063/1.2162854; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BORON; ION BEAMS; IRRADIATION; KEV RANGE; MAGNETIC FIELDS; NEUTRON CAPTURE THERAPY; OXYGEN; PROTON BEAMS

Citation Formats

Akhmetov, T.D., Davydenko, V.I., Ivanov, A.A., Kobets, V.V., Medvedko, A.S., Skorobogatov, D.N., and Tiunov, M.A. Radially uniform circular sweep of ion beam. United States: N. p., 2006. Web. doi:10.1063/1.2162854.
Akhmetov, T.D., Davydenko, V.I., Ivanov, A.A., Kobets, V.V., Medvedko, A.S., Skorobogatov, D.N., & Tiunov, M.A. Radially uniform circular sweep of ion beam. United States. doi:10.1063/1.2162854.
Akhmetov, T.D., Davydenko, V.I., Ivanov, A.A., Kobets, V.V., Medvedko, A.S., Skorobogatov, D.N., and Tiunov, M.A. Wed . "Radially uniform circular sweep of ion beam". United States. doi:10.1063/1.2162854.
@article{osti_20779099,
title = {Radially uniform circular sweep of ion beam},
author = {Akhmetov, T.D. and Davydenko, V.I. and Ivanov, A.A. and Kobets, V.V. and Medvedko, A.S. and Skorobogatov, D.N. and Tiunov, M.A.},
abstractNote = {A spiral sweep of the ion beam was suggested to provide sufficiently uniform irradiation of a circular target. It is shown that if the beam radius is small enough, the radius of the beam center should increase as a square root of time to provide uniform radial irradiation of the target. In the complex for Boron Neutron Capture Therapy developed at the Budker Institute of Nuclear Physics, the proton beam sweep will be performed by a sweeper with uniform magnetic field with strength up to 500 G and axial length {approx}20 cm, rotating at 100-2000 Hz, and scanning over the radius at a 1-10 Hz frequency. The sweeper field is produced by four longitudinal flat current windings placed near the inner walls of a box-shaped yoke with the inner opening of a square cross section. A similar sweeping technique can be used in a 200 keV oxygen implanter, which is also under development at the Budker Institute.},
doi = {10.1063/1.2162854},
journal = {Review of Scientific Instruments},
number = 3,
volume = 77,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}