Paper |
Title |
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MOPOST030 |
Proton Irradiation Site for Si-Detectors at the Bonn Isochronous Cyclotron |
130 |
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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 with a charge-to-mass ratio Q/A of ’ 1/2 and kinetic energies ranging from 7 to 14 MeV per nucleon. At a novel irradiation site, a 14 MeV proton beam with a diameter of a few mm is utilized to homogeneously irradiate silicon detectors, so-called devices under test (DUTs), to perform radiation hardness studies. Homogeneous irradiation is achieved by moving the DUT through the beam in a row-wise scan pattern with constant velocity and a row separation smaller than the beam diameter. During the irradiation procedure, the beam parameters are continuously measured non-destructively using a calibrated, secondary electron emission-based beam monitor, installed at the exit window of the beamline. The diagnostics and the irradiation procedure ensure a homogeneous irradiation with a proton fluence error of smaller than 2 %. In this work, an overview of the accelerator facility is given and the irradiation site with its beam diagnostics is presented in detail.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-MOPOST030
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About • |
Received ※ 08 June 2022 — Accepted ※ 04 July 2022 — Issue date ※ 07 July 2022 |
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MOPOST032 |
A New Approach to Cyclotron Design |
133 |
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- O. Karamyshev
JINR, Dubna, Moscow Region, Russia
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Cyclotrons are the oldest type of circular accelerators, with many applications, design of the majority of cyclotrons nowadays follow has become a standard for most of developers, and there is a clear trend for switching towards superconducting magnets to increase the magnet field level and descrease the size and weight. A new approach, described in this paper allowed the author to design a lineup of cyclotrons from 15 to 230 MeV as compact and power efficient as superconducting cyclotrons, but using copper coil.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-MOPOST032
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About • |
Received ※ 08 June 2022 — Revised ※ 10 June 2022 — Accepted ※ 13 June 2022 — Issue date ※ 04 July 2022 |
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MOPOST033 |
Betatron Tune Characterization of the Rutgers 12-Inch Cyclotron for Different Magnetic Poles Configurations |
136 |
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- C. Hernalsteens
CERN, Meyrin, Switzerland
- B.L. Beaudoin, T.W. Koeth
UMD, College Park, Maryland, USA
- M. Miller
Brown University, Providence, USA
- T.S. Ponter
IBA, Louvain-la-Neuve, Belgium
- K.J. Ruisard
ORNL, Oak Ridge, Tennessee, USA
- R. Tesse
ULB, Bruxelles, Belgium
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The Rutgers cyclotron is a small 12-Inch, 1.2MeV proton cyclotron. Sets of magnet pole-tips were designed to demonstrate different cyclotron focusing options: weak focusing, radial sector focusing and spiral sector focusing. The purpose of this paper is to experimentally characterize the transverse dynamics provided by different types of focusing. Magnetic field measurements provide insight into the as-built properties of these magnetic poles configurations. First we discuss the axial betatron tune measurements as a function of the beam energy towards outer radii, which agree well with the values expected from measured magnetic data. Turn-by-turn betatron envelope oscillation measurements are also reported and compared with the tune measurements. Excellent agreement is once again found.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-MOPOST033
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|
About • |
Received ※ 09 June 2022 — Revised ※ 14 June 2022 — Accepted ※ 14 June 2022 — Issue date ※ 08 July 2022 |
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