| Paper | Title | Page |
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| WEPP01 | High Intensity Beam Production at CEA/Saclay For The IPHI Project | 83 |
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| CEA/Saclay is involved in high power proton accelerators for long years. This activity started in the 90's, with the development of the SILHI source which routinely produces tens mA of proton beam. Several industrial difficulties led to a very long IPHI RFQ construction process. The 352 MHz RFQ conditioning is presently in progress. Before the completion of the conditioning in CW mode, tests with pulsed proton beam have been decided. As a consequence, the SILHI source recently produced very short H+ beam pulses in order to allow the first IPHI beam acceleration. Such very short pulses, in the range of few hundred microseconds, allowed analyzing the beam loading of the RFQ cavity as well as conditioning the middle energy diagnostic. This article will focus on the source parameters and beam characteristics in the low energy beam line leading to the best RFQ transmission. | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WEPP01 | |
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TUBO03 |
Simulations of High Intensity Low Mass Ion Sources | |
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| At CEA/Saclay, in the framework of the HPPA devel-opment, the Department of Accelerators, Cryogenics and Magnetism (SACM) has designed and built low mass, high intensity ECRIS for more than 15 years. Such skills are illustrated by the construction of injectors (sources and low energy beam transport lines) for several national and international projects such as SPIRAL2, IFMIF and FAIR. In order to improve the source performance, a better understanding of the processes involved in the plasma generation is needed as well as an important R&D activity. In this aim, in collaboration with Patech-nik company, we develop a code based on the numerical method developed by Lampe et al 1998 Using dedicated numerical tools for the description of the electron heat-ing, and the ionization, self-consistent simulations have been performed. | ||
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Slides TUBO03 [12.700 MB] | |
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| WECO02 | Development of a Compact High Intensity Ion Source for Light Ions at CEA-Saclay | 73 |
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During the past 5 years, a R&D program has been launched to improve the beam quality of ECR 2.45 GHz high intensity light ion sources for high power accelerators. The main goal was to minimize the divergence and emittance growth of intense beams due to the space charge as early as possible on the low energy transfer line for a better injection in the second stage of acceleration (RFQ). This has been achieved by reducing the length of the extraction system, to be able to put the first solenoid as close as possible to the extraction aperture. This was performed with the ALISES concept (Advanced Light Ion Source Extraction System). Encouraging results have been obtained in 2012 but with limitations due to Penning discharges in the accelerating column. Taking advantages of ALISES geometry, intensive studies and simulations have been undertaken to eliminate the discharge phenomena. An Innovative and compact source geometry has been found and the source has been fabricated. This new prototype and its performances will be described, as well as magnetic field configuration studies and its influence on the extracted beam.
This source developed at Saclay is under patent number FR 15 56871 and this patent is pending |
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Slides WECO02 [35.894 MB] | |
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WECO02 | |
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| WEPP02 | Commissioning of the High Intensity Proton Injector of the Facility for Anti Proton and Ion Research at CEA-Saclay | 86 |
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| The Facility for Antiproton and Ion Research (FAIR) located at GSI (Darmstadt) in Germany addresses several fields of physics research within a single installation. One of the contribution of Irfu/SACM at CEA-Saclay to the FAIR linear proton accelerator concerns the development and construction of the ion source and the low energy line. The 2.45 GHz microwave ion source will deliver a 100 mA H+ beam pulsed at 4 Hz with an energy of 95 keV. A low energy beam transport (LEBT) line based on a dual solenoids focusing scheme allows the injection of the proton beam into the radio frequency quadrupole (RFQ) within an acceptance of 0.3π mm.mrad (norm., rms). An electrostatic chopper system located between the second solenoid and the RFQ is used to cut the beam macro pulse from the source to inject 36 μs long beam pulses into the RFQ. This article reports the finalization of the installation of the injector with the detail of dedicated diagnostics, the first beam measurements and gives a planning of the different commissioning phases | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WEPP02 | |
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