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MOPMB020 | Transverse Intensity Distribution Measurement of Ion Beams Using Gafchromic Films | ion, radiation, cyclotron, octupole | 130 |
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A possible method of measuring the transverse spatial distribution of energetic ion beams is developed at Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology (formerly, Japan Atomic Energy Agency). For this purpose, a radiochromic film, Gafchromic film (Ashland Inc.), is employed since it enables us to easily measure a large-area irradiation field distribution at a high spatial resolution. Gafchromic EBT3 and HD-V2 films are irradiated with ion beams of various species and kinetic energies extracted from a cyclotron and electrostatic accelerators at QST/Takasaki. Then, the coloration response of the films is analyzed in terms of the optical density. It is demonstrated that EBT3 and HD-V2 films are useful for the beam profile measurement at low fluence and at low energy, respectively. | |||
DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMB020 | ||
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TUPMR003 | Three-fold Increase of the Proton Beam Current in the Vacuum Insulation Tandem Accelerator | ion, vacuum, proton, electron | 1228 |
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Funding: The study was supported by the Grants from the Russian Science Foundation (Project no. 14-32-00006) and the Budker Institute of Nuclear Physics In BINP neutron source for boron neutron capture therapy of cancer based on the vacuum insulation tandem accelerator and lithium target for neutron generation was constructed. After optimization of the injection of negative hydrogen ions and modernization of the stripping target 1.6 mA 2 MeV proton beam was obtained. Improvements of the accelerator to suppress accompanying electron current were introduced, and after making changes to protection system of high voltage power supply a stable proton beam with a current of 4.5 mA was obtained. Analysis of the experimental results shows that the beam is accelerated without losses. Obtaining of proton beam with the current of more than 3 mA offers the prospects of using of accelerators for BNCT in cancer clinics. |
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DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMR003 | ||
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