| Paper | Title | Other Keywords | Page |
|---|---|---|---|
| TUPSB37 | Modernization of the ECR Ion Source DECRIS-2M. Results of the First Tests. | ECR, ECRIS, ion-source, injection | 307 |
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| The article describes the design of the modernized ECR ion source DECRIS-2M. The upgrade consists in increasing the magnetic field to improve plasma confinement and improve the source parameters. The modernization also made it possible to increase the inner diameter of the plasma chamber and replace the coaxial microwave power input by a waveguide. Redesigned injection chamber significantly expands the possibilities of production ions of solids using different methods. The article also presents the first results of experiments production of Ar, Xe and Bi ion beams from a modernized ion source. The results demonstrate substantial increase of the ion beams intensity. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB37 | ||
| About • | Received ※ 06 September 2021 — Revised ※ 21 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 18 October 2021 | ||
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| TUPSB38 | Magnetic System With Variable Characteristics for a 2.45 GHz ECRIS | ECR, solenoid, ion-source, operation | 310 |
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| Particle sources might be considered as an incredibly significant part of the accelerator system. Nowadays high-energy acceleration requires the types of ion sources implemented to produce beams of ions and protons of high energy and intensity. The current study is aimed to con-sider the design of the magnetic system of ECRIS with the operating frequency of 2.45 GHz for producing pro-tons and double-charged helium ions. The numerical simulation of the magnetic system was made by the Finite Element Method. The adjustment of the axial distribution of the magnetic field inside the plasma chamber is realized by shifting the ring magnets. Additional tuning of the axial magnetic field is presented by solenoids introduced for providing the required Binj and Bext adjustment as well as the Bmin control on the axis. For the simplification of the structure the alternating design of the ring magnets with trapezoidal components was considered. Furthermore, the magnetic system allows operating in both single-charged and multiply charged ions generation modes, thus the microwave source mode and the ECR mode are realizable for this configuration. Therefore, the study enables a better understanding of the feasibility of the ECRIS magnetic system with variable characteristics. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB38 | ||
| About • | Received ※ 29 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 October 2021 | ||
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| TUPSB39 | Study of Space Charge Compensation Process of a 400 KeV Pulsed Hydrogen Ion Beam | electron, space-charge, focusing, ion-source | 313 |
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Funding: Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia A three grid energy analyzer of slow secondary ions with a twin analyzing grid is described. The analyzer has cylindrical geometry and Pi angle for recording of the slow ions. The analyzer has been used for measurements of degree of space-charge compensation (SCC) of a pulsed hydrogen ion beam with energy of 400 keV and peak beam current of 60 mA. Results of the measurements are presented and compared with theoretical estimations based on model in which the SCC degree is limited by heating of electrons in collisions with fast ions of the beam. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB39 | ||
| About • | Received ※ 20 September 2021 — Revised ※ 05 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 16 October 2021 | ||
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| TUPSB40 | He⁺ Ion Source for the NICA Injection Complex | ion-source, cathode, injection, LEBT | 316 |
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| A mono-ion source of single-charged helium of high intensity has been created to confirm the declared parameters of Heavy Ion Linear Accelerator (HILAC) and for the injection into superconducting synchrotron (SC) Booster during the first run. The paper presents the design of the He⁺ ion source, test bench for the TOF measurements and acceleration beam developed at VBLHEP, JINR. The results of the tests of the source are presented. During the tests the intense beams of ions 50 mA of He⁺ were produced. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB40 | ||
| About • | Received ※ 25 September 2021 — Revised ※ 08 October 2021 — Accepted ※ 13 October 2021 — Issued ※ 18 October 2021 | ||
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| TUPSB48 | Optimization of the Geometric Characteristics of the Laser Beam in a Multi-Pass Scheme of Nonlinear Amplification of the Master Oscillator Illumination | laser, ion-source, experiment, heavy-ion | 327 |
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| The paper presents the results of numerical simulation of the CO₂ MOPA laser scheme which is designed to generate powerful short radiation pulses in the ion source circuit. It is based on the nonlinear nature of the amplification of the master-oscillator pulse radiation, the front of which is formed by a nonlinear absorber. The paper considers the influence of the geometric parameters of the entrance beam in a four-pass amplification scheme. It is shown that for a fixed value of the small signal gain the maximum amplification effect is achieved with a certain formation of the spatial characteristics of the laser beam at the input to the amplifier. So some central uniform part of MO beam which has a Gaussian spatial profile is used in the telescopic amplifier. In this case, despite significant aperture losses, the maximum energy at the output of the amplifier is achieved with optimizing the beam diameter. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB48 | ||
| About • | Received ※ 24 September 2021 — Revised ※ 26 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 October 2021 | ||
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