| Paper | Title | Page |
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| MOPSA03 | Calculations of Ion Dynamics and Elecrodynamics Characteristics of 800 KeV/nucleon RFQ | 135 |
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| Accelerating structure with radio-frequency quadrupole focusing (RFQ) was observed in this research. The RFQ is aimed to bunch up, accelerate and focus 1 MeV/nucleon ions with A/Z from 1 to 3.2 (A - mass number of ion, Z - ion charge). The chemical elements from H⁺ to O5+ fill up this particle types range. The protons current is 2 mA and ion current is 1 mA. In this paper charged particle dynamics calculations, which essential for next electrodynamic cavity modeling, were performed. The electrodynamic model of 4-vane RFQ cavity with windows of magnetic connection was created. The dependence between frequency and cavity geometrics was defined. Topology of magnetic windows, which aimed to have the maximum mod separations, was determined. Different types of tanks were considered and corresponding electromagnetic characteristics were calculated. Tuning elements (plungers and spacers) influence on cavity was modeled. As a result optimized model of accelerating structure was realized. | ||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA03 | |
| About • | Received ※ 20 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 07 October 2021 — Issued ※ 18 October 2021 | |
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| TUB07 | The Conceptual Design of the 7.5 MeV/u Light Ion Injector | 51 |
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| The new linac for light ion beam injection is under development at MEPhI. Such linac was proposed for acceleration of 7.5 MeV/u ion beam with A/Z=1-3 and current up to 5 mA for proton and 0.4 pmA for light ions. The linac general layout will include two types of ion sources: ECR ion source for proton anf He ions and laser ion source for ions form Li to O. Following the LEBT ions will be bunched and accelerated to the final energy using RFQ section and 14 IH cavities. These IH-cavities will be identical (divided into two groups) and independently phased. All cavities will operate on 81 MHz. Results of the beam dynamics simulations and the cavities design will presented in the report. | ||
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Slides TUB07 [5.210 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUB07 | |
| About • | Received ※ 16 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 14 October 2021 | |
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WEPSC11 |
Optimization of the RFQ Electrode Construction for Multipactor Discharge Prevention | |
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| In this paper the study of an opportunity of multipactor discharge appearance in the four-vane RFQ structure was performed. This structure has several regions with thin gaps that have a risk of multipactor discharges. First region is the area close to frequency tuners and the second one is the bottom part of the electrodes. Further, an optimization of construction was proposed to solve this issue. | ||
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