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Other Keywords |
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MOPP013 |
Faraday Cup Selector for DC-280 Cyclotron |
controls, diagnostics, cyclotron, ECR |
103 |
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- V.V. Aleinikov, S. Pachtchenko
JINR, Dubna, Moscow Region, Russia
- K.P. Sychev, V. Zabanova
JINR/FLNR, Moscow region, Russia
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New isochronous cyclotron DC-280, the basic facility of Super Heavy Element (SHE) factory was put into operation in the FLNR JINR on March 25, 2019. Key role in beam diagnostics for lossless transportation is played by Faraday cups. Five elements were installed along the two injection lines, and 12 elements on the five transport channels to the experimental facilities. The software was developed to automatically select the active Faraday cup depending on its location and track the current on a single indicator. This paper describes basic principles and algorithm of the Faraday cup Selector module which is a part of the DC-280 cyclotron control system.
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Poster MOPP013 [2.214 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP013
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About • |
paper received ※ 27 August 2019 paper accepted ※ 08 September 2019 issue date ※ 10 November 2019 |
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TUPP023 |
Two-dimensional Beam Profile Monitor for Alpha Emitter |
electron, target, injection, dipole |
355 |
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- K.S. Tanaka, K. Harada, M. Itoh, H. Kawamura, A. Terakawa, A. Uchiyama
CYRIC, Sendai, Japan
- T. Hayamizu, H. Nagahama, N. Ozawa, Y. Sakemi
CNS, Saitama, Japan
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We developed two-dimensional beam profile monitors for alpha-emitters along with other larger number of ions to measure the permanent electric dipole moment of the electron using francium atoms at CYRIC in Tohoku university. Francium is produced by the fusion reaction between the oxygen beam from the cyclotron accelerator and gold target, and a far larger number of other ions such as fold or potassium are also emitted from the target. Thus it was difficult to measure the beam profile of francium hidden by these ions. We installed two beam profile monitor consisted of the micro-channel plate and phosphor screen. If we stop the beam after the beam injection to the monitor in sufficient time, we can only observe the fluorescence of the alpha particle emitted by francium atoms on the surface of the plates. By using this monitoring system, we improved the beam transport efficiency by several times and improved beam purity of francium with Wien filter.
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Poster TUPP023 [185.216 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-TUPP023
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About • |
paper received ※ 04 September 2019 paper accepted ※ 07 September 2019 issue date ※ 10 November 2019 |
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TUPP027 |
Development of a Precision Pepper-Pot Emittance Meter |
emittance, heavy-ion, alignment, background |
369 |
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- G. Hahn
PAL, Pohang, Republic of Korea
- J.G. Hwang
HZB, Berlin, Germany
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A fast single-shot emittance measurement device, a pepper-pot emittance meter, was developed. In the manufacturing stage, in order to guarantee the quality of the holes in the pepper-pot mask, we fabricated two mask using different methods that are made of phosphor bronze by optical lithography process and SUS by laser cutting. After the comparison of each SEM (Scanning Electron Microscope) measurement data, the phosphor bronze mask fabricated by lithography was found to be suitable. The rotation and translation matrices are applied on all images obtained by the camera to mitigate the relative angular misalignment errors between MCP, mirror and CMOS camera with respect to the mask. By applying the instrument in the NFRI ion source, the four-dimensional phase-space distribution of ion beams is retrieved and compared with the result measured by using a slit-scan method. In this paper, we describe the fabrication process, data analysis method and beam measurement results of the developed emittance meter.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-TUPP027
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About • |
paper received ※ 09 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019 |
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