Improvements in the SPIDER RF system
In SPIDER the negative ions are extracted from a plasma generated with RadioFrequency drivers, each fed with a power up to 100 kW at the frequency of 1 MHz. One of its distinguishing characteristics is the source fully installed within a vacuum vessel and operated in the residual gas pressure, inclu...
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| Veröffentlicht in: | Fusion engineering and design 2021-06, Vol.167, p.112337, Article 112337 |
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| container_title | Fusion engineering and design |
| container_volume | 167 |
| creator | Maistrello, Alberto Recchia, Mauro Zamengo, Andrea Bernardi, Marco Chitarin, Giuseppe Dan, Mattia Gasparini, Ferdinando Jain, Palak Bigi, Marco Gaio, Elena Marcuzzi, Diego Pavei, Mauro Zanotto, Loris |
| description | In SPIDER the negative ions are extracted from a plasma generated with RadioFrequency drivers, each fed with a power up to 100 kW at the frequency of 1 MHz. One of its distinguishing characteristics is the source fully installed within a vacuum vessel and operated in the residual gas pressure, including the matching networks for the driver impedance installed on the source backside.
These features lead to more challenging design and integration also of the RF system, and in fact during the experimentation some issues arose: the operation of the RF generators is affected by the magnetic coupling among the RF circuits on board the source; breakdowns are observed on the source backside while powering the RF circuit and common mode RF currents flow through the diagnostics and dc power circuits.
An overall system design review was launched with the aim to identify the root cause of these issues, feasible solutions and a plan for their fix, which are presented and discussed in this paper. |
| doi_str_mv | 10.1016/j.fusengdes.2021.112337 |
| format | Article |
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These features lead to more challenging design and integration also of the RF system, and in fact during the experimentation some issues arose: the operation of the RF generators is affected by the magnetic coupling among the RF circuits on board the source; breakdowns are observed on the source backside while powering the RF circuit and common mode RF currents flow through the diagnostics and dc power circuits.
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These features lead to more challenging design and integration also of the RF system, and in fact during the experimentation some issues arose: the operation of the RF generators is affected by the magnetic coupling among the RF circuits on board the source; breakdowns are observed on the source backside while powering the RF circuit and common mode RF currents flow through the diagnostics and dc power circuits.
An overall system design review was launched with the aim to identify the root cause of these issues, feasible solutions and a plan for their fix, which are presented and discussed in this paper.</description><subject>Circuit design</subject><subject>Circuits</subject><subject>Common mode RF currents</subject><subject>Experimentation</subject><subject>Gas pressure</subject><subject>NBI</subject><subject>Negative ions</subject><subject>Radio frequency</subject><subject>Residual gas</subject><subject>RF drivers coupling</subject><subject>SPIDER RF system</subject><subject>Systems design</subject><issn>0920-3796</issn><issn>1873-7196</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFkEFLw0AQhRdRsFZ_gwG9Ju7sZjPZY6lWCwWl6nlJsxNNMEndTQv9926JeBUG5vLemzcfY9fAE-CQ3TVJtfPUfVjyieACEgAhJZ6wCeQoYwSdnbIJ14LHEnV2zi68bzgHDDNht8t26_o9tdQNPqq7aPik6PVlef-wjtaLyB_8QO0lO6uKL09Xv3vK3hcPb_OnePX8uJzPVnEpUznEim9UoTVqxJQXSJBuCs2hwgzznGMuU5vlQqhKqAxClY3NoFTWKgtQ5ZLklN2MuaHS9478YJp-57pw0gglERRoDUGFo6p0vfeOKrN1dVu4gwFujkhMY_6QmCMSMyIJztnopPDEviZnfFlTV5KtHZWDsX39b8YPn9tqng</recordid><startdate>202106</startdate><enddate>202106</enddate><creator>Maistrello, Alberto</creator><creator>Recchia, Mauro</creator><creator>Zamengo, Andrea</creator><creator>Bernardi, Marco</creator><creator>Chitarin, Giuseppe</creator><creator>Dan, Mattia</creator><creator>Gasparini, Ferdinando</creator><creator>Jain, Palak</creator><creator>Bigi, Marco</creator><creator>Gaio, Elena</creator><creator>Marcuzzi, Diego</creator><creator>Pavei, Mauro</creator><creator>Zanotto, Loris</creator><general>Elsevier B.V</general><general>Elsevier Science Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>202106</creationdate><title>Improvements in the SPIDER RF system</title><author>Maistrello, Alberto ; Recchia, Mauro ; Zamengo, Andrea ; Bernardi, Marco ; Chitarin, Giuseppe ; Dan, Mattia ; Gasparini, Ferdinando ; Jain, Palak ; Bigi, Marco ; Gaio, Elena ; Marcuzzi, Diego ; Pavei, Mauro ; Zanotto, Loris</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c343t-50b5a99797740a7e14ba901f7678807834d68225f2561796bd61c5dd5d11f83e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Circuit design</topic><topic>Circuits</topic><topic>Common mode RF currents</topic><topic>Experimentation</topic><topic>Gas pressure</topic><topic>NBI</topic><topic>Negative ions</topic><topic>Radio frequency</topic><topic>Residual gas</topic><topic>RF drivers coupling</topic><topic>SPIDER RF system</topic><topic>Systems design</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Maistrello, Alberto</creatorcontrib><creatorcontrib>Recchia, Mauro</creatorcontrib><creatorcontrib>Zamengo, Andrea</creatorcontrib><creatorcontrib>Bernardi, Marco</creatorcontrib><creatorcontrib>Chitarin, Giuseppe</creatorcontrib><creatorcontrib>Dan, Mattia</creatorcontrib><creatorcontrib>Gasparini, Ferdinando</creatorcontrib><creatorcontrib>Jain, Palak</creatorcontrib><creatorcontrib>Bigi, Marco</creatorcontrib><creatorcontrib>Gaio, Elena</creatorcontrib><creatorcontrib>Marcuzzi, Diego</creatorcontrib><creatorcontrib>Pavei, Mauro</creatorcontrib><creatorcontrib>Zanotto, Loris</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Fusion engineering and design</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Maistrello, Alberto</au><au>Recchia, Mauro</au><au>Zamengo, Andrea</au><au>Bernardi, Marco</au><au>Chitarin, Giuseppe</au><au>Dan, Mattia</au><au>Gasparini, Ferdinando</au><au>Jain, Palak</au><au>Bigi, Marco</au><au>Gaio, Elena</au><au>Marcuzzi, Diego</au><au>Pavei, Mauro</au><au>Zanotto, Loris</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Improvements in the SPIDER RF system</atitle><jtitle>Fusion engineering and design</jtitle><date>2021-06</date><risdate>2021</risdate><volume>167</volume><spage>112337</spage><pages>112337-</pages><artnum>112337</artnum><issn>0920-3796</issn><eissn>1873-7196</eissn><abstract>In SPIDER the negative ions are extracted from a plasma generated with RadioFrequency drivers, each fed with a power up to 100 kW at the frequency of 1 MHz. One of its distinguishing characteristics is the source fully installed within a vacuum vessel and operated in the residual gas pressure, including the matching networks for the driver impedance installed on the source backside.
These features lead to more challenging design and integration also of the RF system, and in fact during the experimentation some issues arose: the operation of the RF generators is affected by the magnetic coupling among the RF circuits on board the source; breakdowns are observed on the source backside while powering the RF circuit and common mode RF currents flow through the diagnostics and dc power circuits.
An overall system design review was launched with the aim to identify the root cause of these issues, feasible solutions and a plan for their fix, which are presented and discussed in this paper.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.fusengdes.2021.112337</doi></addata></record> |
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| identifier | ISSN: 0920-3796 |
| ispartof | Fusion engineering and design, 2021-06, Vol.167, p.112337, Article 112337 |
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| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Circuit design Circuits Common mode RF currents Experimentation Gas pressure NBI Negative ions Radio frequency Residual gas RF drivers coupling SPIDER RF system Systems design |
| title | Improvements in the SPIDER RF system |
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