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MOBO03 |
Proton Irradiation Site for High-Uniformity Radiation Hardness Tests of Silicon Detectors at the Bonn Isochronous Cyclotron |
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- D. Sauerland, R. Beck, P.D. Eversheim
HISKP, Bonn, Germany
- J. Dingfelder, P. Wolf
SiLab, Bonn, Germany
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The Bonn Isochronous Cyclotron provides proton, deuteron, alpha particle and other light ion beams, having a charge-to-mass ratio Q/A >= 1/2, with kinetic energies in the range of 7 to 14 MeV per nucleon. At the irradiation site, a 14 MeV proton beam with a diameter of a few mm is used to irradiate detectors, so-called devices under test (DUTs), housed in a thermally-insulated and gas-cooled box. To ensure homogeneous damage application, the DUT is moved through the beam in a row-wise scan pattern with constant velocity and a row separation, smaller than the beam diameter. During irradiation, beam parameters are continuously measured non-destructively using a calibrated, secondary electron emission-based beam monitor, installed at the exit to the site. This allows a beam-driven irradiation scheme, enabling the setup to autonomously react to changing beam conditions, resulting in highly-uniform proton fluence distributions with relative uncertainties of typically 2%. In this work, the accelerator facility is introduced, the proton irradiation site with focus on its beam diagnostics is presented in detail and resulting fluence distributions are shown.
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Slides MOBO03 [17.472 MB]
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-CYCLOTRONS2022-MOBO03
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About • |
Received ※ 31 December 2022 — Revised ※ 16 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 07 February 2023 |
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