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| 001 | 357444 | ||
| 005 | 20250227110743.0 | ||
| 024 | 7 | _ | |a 10.18429/JACOW-IPAC2024-TUPS29 |2 doi |
| 024 | 7 | _ | |a 10.15120/GSI-2025-00401 |2 datacite_doi |
| 037 | _ | _ | |a GSI-2025-00401 |
| 041 | _ | _ | |a English |
| 100 | 1 | _ | |a Ondreka, David |0 P:(DE-Ds200)OR0900 |b 0 |e Corresponding author |
| 111 | 2 | _ | |a 15th International Particle Accelerator Conference |g IPAC2024 |c Nashville |d 2024-05-19 - 2024-05-24 |w USA |
| 245 | _ | _ | |a Slow extraction of a dual-isotope beam from SIS18 |
| 260 | _ | _ | |c 2024 |b JACoW Publishing |
| 300 | _ | _ | |a 1698-1701 pages |
| 336 | 7 | _ | |a CONFERENCE_PAPER |2 ORCID |
| 336 | 7 | _ | |a Conference Paper |0 33 |2 EndNote |
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| 500 | _ | _ | |a Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. |
| 520 | _ | _ | |a Recently, the heavy ion synchrotron SIS18 at GSI was for the first time operated with a dual-isotope beam, made up of 12C3+ and 4He+. Such a beam can be used to improve carbon radiotherapy by providing online information on dose deposition, where the helium ions serve as a probe beam traversing the patient while depositing a negligible dose. For this, the accelerator has to deliver a slowly extracted beam with a fixed fraction of helium over the spill. The difference in mass-to-charge ratio of 4He compared to 12C is small enough to permit simultaneous acceleration and to make the two isotopes practically indistinguishable for the accelerator instrumentation. Yet, it may cause a temporal shift between the two components in the spill owing to the sensitivity of slow extraction to tiny tune variations. We investigated different extraction methods, and examined the time-wise stability of the dual-isotope beam with a beam monitoring setup installed in the GSI biophysics experiment room. A constant helium fraction was obtained using transverse knock-out extraction with adjusted chromaticity. |
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| 700 | 1 | _ | |a Bozyk, Lars |0 P:(DE-Ds200)OR2146 |b 1 |
| 700 | 1 | _ | |a Graeff, Christian |0 P:(DE-Ds200)OR5177 |b 2 |
| 700 | 1 | _ | |a Spiller, Peter |0 P:(DE-Ds200)OR1222 |b 3 |u gsi |
| 700 | 1 | _ | |a Stadlmann, Jens |0 P:(DE-Ds200)OR1229 |b 4 |
| 700 | 1 | _ | |a Volz, Lennart |0 P:(DE-Ds200)OR6911 |b 5 |
| 700 | 1 | _ | |a Pilat, Fulvia |b 6 |e Editor |
| 700 | 1 | _ | |a Fischer, Wolfram |b 7 |e Editor |
| 700 | 1 | _ | |a Saethre, Robert |b 8 |e Editor |
| 700 | 1 | _ | |a Anisimov, Petr |b 9 |e Editor |
| 700 | 1 | _ | |a Andrian, Ivan |b 10 |e Editor |
| 773 | _ | _ | |a 10.18429/JACOW-IPAC2024-TUPS29 |
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