K. Wilson, L. Selman, C. Whyte, P. Macinnes, A. Young, A. Phelps, A. Cross, L. Zhang, B. Eliasson, D. Speirs, C. Robertson, K. Ronald, A. Cairns, M. Koepke, R. Bingham, R. Bamford
{"title":"用于磁化等离子体参数不稳定性研究的螺旋装置的设计与表征","authors":"K. Wilson, L. Selman, C. Whyte, P. Macinnes, A. Young, A. Phelps, A. Cross, L. Zhang, B. Eliasson, D. Speirs, C. Robertson, K. Ronald, A. Cairns, M. Koepke, R. Bingham, R. Bamford","doi":"10.1109/ICOPS45751.2022.9813143","DOIUrl":null,"url":null,"abstract":"Parametric instabilities [1] arise across many plasma physics environments including inertial [2] and magnetic [3] confinement fusion and in ionospheric plasmas [4] . A helicon [5] plasma source can provide a stable, controllable, low temperature and relatively tenuous plasma for periods of hours, making it suited to diagnosis by techniques such as probes and interferometry. Our apparatus operates in inductive and helicon modes driven by an RF antenna in the range of 3<f<30 MHz at powers <4 kW, which creates a noble gas plasma in a 1 m diameter, 3 m long stainless-steel vacuum chamber surrounded by electromagnets providing an axial B0<90 mT. Typically, a source like this would be expected to provide a plasma with 10 15 <n e <10 18 m -3 and T e <10 eV. For these plasma parameters, parametric instabilities such as Raman and Brillouin scattering can be triggered by readily available, powerful microwave sources such as magnetron oscillators and travelling-wave tube amplifiers and broadband pulses developed in dispersive pulse compressors. These sources will launch microwaves into the plasma via a pair of Satoh horns providing a Gaussian beam for microwave scattering experiments. The characterisation of the plasma using the RF-compensated Langmuir probes and complementary microwave interferometry diagnostic is presented.","PeriodicalId":175964,"journal":{"name":"2022 IEEE International Conference on Plasma Science (ICOPS)","volume":"266 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Design and Characterisation of a Helicon Apparatus for Investigations of Parametric Instabilities in Magnetised Plasma\",\"authors\":\"K. Wilson, L. Selman, C. Whyte, P. Macinnes, A. Young, A. Phelps, A. Cross, L. Zhang, B. Eliasson, D. Speirs, C. Robertson, K. Ronald, A. Cairns, M. Koepke, R. Bingham, R. Bamford\",\"doi\":\"10.1109/ICOPS45751.2022.9813143\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Parametric instabilities [1] arise across many plasma physics environments including inertial [2] and magnetic [3] confinement fusion and in ionospheric plasmas [4] . A helicon [5] plasma source can provide a stable, controllable, low temperature and relatively tenuous plasma for periods of hours, making it suited to diagnosis by techniques such as probes and interferometry. Our apparatus operates in inductive and helicon modes driven by an RF antenna in the range of 3<f<30 MHz at powers <4 kW, which creates a noble gas plasma in a 1 m diameter, 3 m long stainless-steel vacuum chamber surrounded by electromagnets providing an axial B0<90 mT. Typically, a source like this would be expected to provide a plasma with 10 15 <n e <10 18 m -3 and T e <10 eV. For these plasma parameters, parametric instabilities such as Raman and Brillouin scattering can be triggered by readily available, powerful microwave sources such as magnetron oscillators and travelling-wave tube amplifiers and broadband pulses developed in dispersive pulse compressors. These sources will launch microwaves into the plasma via a pair of Satoh horns providing a Gaussian beam for microwave scattering experiments. The characterisation of the plasma using the RF-compensated Langmuir probes and complementary microwave interferometry diagnostic is presented.\",\"PeriodicalId\":175964,\"journal\":{\"name\":\"2022 IEEE International Conference on Plasma Science (ICOPS)\",\"volume\":\"266 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-05-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2022 IEEE International Conference on Plasma Science (ICOPS)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICOPS45751.2022.9813143\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 IEEE International Conference on Plasma Science (ICOPS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICOPS45751.2022.9813143","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Design and Characterisation of a Helicon Apparatus for Investigations of Parametric Instabilities in Magnetised Plasma
Parametric instabilities [1] arise across many plasma physics environments including inertial [2] and magnetic [3] confinement fusion and in ionospheric plasmas [4] . A helicon [5] plasma source can provide a stable, controllable, low temperature and relatively tenuous plasma for periods of hours, making it suited to diagnosis by techniques such as probes and interferometry. Our apparatus operates in inductive and helicon modes driven by an RF antenna in the range of 3
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