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  Neutron field in the Wendelstein-7-X hall

Herrnegger, F., Junker, J., Weller, A., & Wobig, H. (2003). Neutron field in the Wendelstein-7-X hall. Fusion Engineering and Design, 66-68, 849-853. doi:10.1016/S0920-3796(03)00364-8.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-2DFF-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-2E00-7
Genre: Journal Article

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 Creators:
Herrnegger, F.1, 2, Author              
Junker, J.3, Author              
Weller, A.4, Author              
Wobig, H.5, Author              
Affiliations:
1Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856291              
2Stellarator System Studies, Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856331              
3Theory, Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856323              
4Stellarator Scenario Development (E5), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856285              
5Stellarator Theory (ST), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856287              

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Free keywords: 22nd Symposium on Fusion Technology (SOFT 2002), Helsinki, 2002-09-09 to 2002-09-13
 Abstract: The (d,d)-reactions between the deuterons will produce neutrons with an average energy of 2.46 MeV which are shielded by the concrete wall of 180 cm thickness in case of the Wendelstein 7-X experimental device. The knowledge of the neutron field inside the hall is of special interest for the various diagnostic facilities including neutron diagnostics. The dependence of the neutron flux on the boron concentration as used for the concrete wall and on the thickness of the concrete wall was analyzed. In the interior region of the torus, the flux of fast neutrons (number of neutrons per MeV cm²) is two orders of magnitude higher than in the region close to the concrete wall. By doping the concrete walls with 700 ppm of boron the almost homogeneous flux of thermal neutrons is reduced by a factor of about 30 compared to the case of no boron-admixture.

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Language(s): eng - English
 Dates: 2003
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Degree: -

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Title: Fusion Engineering and Design
  Alternative Title : Fusion Eng. Des.
Source Genre: Journal
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Publ. Info: Copyright © 2003 Elsevier B.V. All rights reserved
Pages: - Volume / Issue: 66-68 Sequence Number: - Start / End Page: 849 - 853 Identifier: -