Preliminary results concerning the simulation of beam profiles from extracted ion current distributions for mini-STRIKE
| العنوان: | Preliminary results concerning the simulation of beam profiles from extracted ion current distributions for mini-STRIKE |
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| المؤلفون: | Loic Schiesko, Piero Agostinetti, M. Giacomin, Federica Bonomo, Pierluigi Veltri, Gianluigi Serianni |
| المصدر: | Review of Scientific Instruments Review of scientific instruments online 87 (2016). doi:10.1063/1.4933185 info:cnr-pdr/source/autori:Agostinetti P.; Giacomin M.; Serianni G.; Veltri P.; Bonomo F.; Schiesko L./titolo:Preliminary results concerning the simulation of beam profiles from extracted ion current distributions for mini-STRIKE/doi:10.1063%2F1.4933185/rivista:Review of scientific instruments online/anno:2016/pagina_da:/pagina_a:/intervallo_pagine:/volume:87 |
| بيانات النشر: | AIP Publishing, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Ion beam, Cesium, 01 natural sciences, Negative ions, Optimal performance, Negative hydrogen ions, 010305 fluids & plasmas, Ion, law.invention, law, Ion current distribution, 0103 physical sciences, Ion sources, Current distribution, Instrumentation, 010302 applied physics, Physics, Computational model, Ion current, Injector, Calorimeter, Computational physics, Ion beams, Electric current distribution measurement, Minimization methods, Ion current density, Radio frequency, Atomic physics, Current density, Beam (structure), Operating behavior |
| الوصف: | The Radio Frequency (RF) negative hydrogen ion source prototype has been chosen for the ITER neutral beam injectors due to its optimal performances and easier maintenance demonstrated at Max-Planck-Institut für Plasmaphysik, Garching in hydrogen and deuterium. One of the key information to better understand the operating behavior of the RF ion sources is the extracted negative ion current density distribution. This distribution - influenced by several factors like source geometry, particle drifts inside the source, cesium distribution, and layout of cesium ovens - is not straightforward to be evaluated. The main outcome of the present contribution is the development of a minimization method to estimate the extracted current distribution using the footprint of the beam recorded with mini-STRIKE (Short-Time Retractable Instrumented Kalorimeter). To accomplish this, a series of four computational models have been set up, where the output of a model is the input of the following one. These models compute the optics of the ion beam, evaluate the distribution of the heat deposited on the mini-STRIKE diagnostic calorimeter, and finally give an estimate of the temperature distribution on the back of mini-STRIKE. Several iterations with different extracted current profiles are necessary to give an estimate of the profile most compatible with the experimental data. A first test of the application of the method to the BAvarian Test Machine for Negative ions beam is given. |
| وصف الملف: | application/pdf |
| تدمد: | 1089-7623 0034-6748 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f13323258904ca386edac07e31fa2ca1Test https://doi.org/10.1063/1.4933185Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....f13323258904ca386edac07e31fa2ca1 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10897623 00346748 |
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