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Development of beam source and bushing for ITER NB system

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Title: Development of beam source and bushing for ITER NB system
Authors: Inoue, T. inoue.takashi52@jaea.go.jp, Hanada, M.1, Kashiwagi, M.1, Taniguchi, M.1, Tobari, H.1, Dairaku, M.1, Umeda, N.1, Watanabe, K.1, Sakamoto, K.1, Ikeda, Y.1
Source: Fusion Engineering & Design. Aug2007, Vol. 82 Issue 5-14, p813-818. 6p.
Subjects: Isostatic pressing, Powder metallurgy, Magnetic separators, High pressure (Technology)
Abstract: Abstract: The paper reports recent progress of R&D towards the beam source and HV bushing of the ITER Neutral Beam System. A new magnetic configuration with a “tent” magnetic filter was tested to suppress localization of fast electrons in a large negative ion source. The result was a drastic improvement of the negative ion uniformity with a beam intensity deviation less than ±4%. This fulfills the requirement of ITER (deviation ≤±5%). In a 1MeV accelerator development, experiment of high current beam acceleration is in progress. The H− ion beams of 0.24A has been obtained so far, at beam energy of 800keV. Concerning the insulator rings of the HV bushing, a new cold-isostatic press method was developed to press alumina powder to the ring form. Formation and sintering of a full-scale (1.56m in diameter) ceramic insulator ring was successfully completed without damages or cracks in the ceramic body. [Copyright &y& Elsevier]
Copyright of Fusion Engineering & Design is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 27061826
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Development of beam source and bushing for ITER NB system
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  Data: <searchLink fieldCode="AR" term="%22Inoue%2C+T%2E%22">Inoue, T.</searchLink><i> inoue.takashi52@jaea.go.jp</i><br /><searchLink fieldCode="AR" term="%22Hanada%2C+M%2E%22">Hanada, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kashiwagi%2C+M%2E%22">Kashiwagi, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Taniguchi%2C+M%2E%22">Taniguchi, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tobari%2C+H%2E%22">Tobari, H.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Dairaku%2C+M%2E%22">Dairaku, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Umeda%2C+N%2E%22">Umeda, N.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Watanabe%2C+K%2E%22">Watanabe, K.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Sakamoto%2C+K%2E%22">Sakamoto, K.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ikeda%2C+Y%2E%22">Ikeda, Y.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Fusion+Engineering+%26+Design%22">Fusion Engineering & Design</searchLink>. Aug2007, Vol. 82 Issue 5-14, p813-818. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Isostatic+pressing%22">Isostatic pressing</searchLink><br /><searchLink fieldCode="DE" term="%22Powder+metallurgy%22">Powder metallurgy</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+separators%22">Magnetic separators</searchLink><br /><searchLink fieldCode="DE" term="%22High+pressure+%28Technology%29%22">High pressure (Technology)</searchLink>
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  Data: Abstract: The paper reports recent progress of R&D towards the beam source and HV bushing of the ITER Neutral Beam System. A new magnetic configuration with a “tent” magnetic filter was tested to suppress localization of fast electrons in a large negative ion source. The result was a drastic improvement of the negative ion uniformity with a beam intensity deviation less than ±4%. This fulfills the requirement of ITER (deviation ≤±5%). In a 1MeV accelerator development, experiment of high current beam acceleration is in progress. The H− ion beams of 0.24A has been obtained so far, at beam energy of 800keV. Concerning the insulator rings of the HV bushing, a new cold-isostatic press method was developed to press alumina powder to the ring form. Formation and sintering of a full-scale (1.56m in diameter) ceramic insulator ring was successfully completed without damages or cracks in the ceramic body. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Fusion Engineering & Design is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=27061826
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