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高稳定性微波放电离子源。

High stability microwave discharge ion sources.

作者信息

Neri L, Celona L

机构信息

INFN-Laboratori Nazionali del Sud, via S. Sofia 62, 95123, Catania, Italy.

出版信息

Sci Rep. 2022 Feb 23;12(1):3064. doi: 10.1038/s41598-022-06937-7.

DOI:10.1038/s41598-022-06937-7
PMID:35197487
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8866414/
Abstract

A new plasma heating mechanism for Microwave Discharge Ion Sources (MDIS) was discovered. Unprecedented beam stability was observed during the commissioning of the Proton Source for the European Spallation Source (PS-ESS) where several thousand source configurations were tested using a custom software tool. Data analysis and plasma simulation revealed that the new behaviour is generated by a completely new plasma heating schema activated by a precise magnetic configuration peculiarity. The stability showed in this configuration, denominated High Stability Microwave Discharge Ion Source (HSMDIS), is excellent and the emittance of the produced beam is lower than produced by standard MDIS configuration. High linearity between power and beam current was observed making easier the use of the source. This new mode of operation can be easily implemented in all existing sources.

摘要

发现了一种用于微波放电离子源（MDIS）的新型等离子体加热机制。在欧洲散裂中子源质子源（PS-ESS）的调试过程中，观察到了前所未有的束流稳定性，在此期间，使用定制软件工具测试了数千种源配置。数据分析和等离子体模拟表明，这种新行为是由一种全新的等离子体加热模式产生的，该模式由精确的磁结构特性激活。在这种称为高稳定性微波放电离子源（HSMDIS）的配置中表现出的稳定性极佳，并且所产生束流的发射度低于标准MDIS配置所产生的发射度。观察到功率与束流之间具有高线性，这使得该源的使用更加容易。这种新的运行模式可以很容易地在所有现有源中实现。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/05ae92ce6c70/41598_2022_6937_Fig18_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/5dd18bf30b76/41598_2022_6937_Fig1_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/1e3f60ebcc41/41598_2022_6937_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/17bb6407cf48/41598_2022_6937_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/6b3a3f97876a/41598_2022_6937_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/6346eea8a632/41598_2022_6937_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/bc2863a3438d/41598_2022_6937_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/a0504a4e3948/41598_2022_6937_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/5b9ae02c1cb7/41598_2022_6937_Fig13_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/17e1af580b13/41598_2022_6937_Fig14_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/f9df13a31d81/41598_2022_6937_Fig15_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/522e716fd9bf/41598_2022_6937_Fig16_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/4014b24d182f/41598_2022_6937_Fig17_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb63/8866414/05ae92ce6c70/41598_2022_6937_Fig18_HTML.jpg

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本文引用的文献

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Recent progress in plasma modelling at INFN-LNS.意大利国家核物理研究所莱昂纳多·桑塔费德实验室等离子体建模的最新进展。
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Improved design of proton source and low energy beam transport line for European Spallation Source.欧洲散裂中子源质子源及低能束流传输线的改进设计
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