Analysis of neutron cameras for ITER

被引：9

作者：

Johnson, LC ^{[1
]}

Barnes, CW ^{[1
]}

Batistoni, P ^{[1
]}

Fiore, C ^{[1
]}

Janeschitz, G ^{[1
]}

Khripunov, V ^{[1
]}

Krasilnikov, A ^{[1
]}

Marcus, FB ^{[1
]}

Nishitani, T ^{[1
]}

Sadler, G ^{[1
]}

Sasao, M ^{[1
]}

Zaveriaev, V ^{[1
]}

机构：

[1] ITER, San Diego Joint Work Site, La Jolla, CA 92037 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1999年 / 70卷 / 01期

关键词：

D O I：

10.1063/1.1149509

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Neutron cameras with horizontal and vertical views have been designed for ITER, based on systems used on JET and TFTR. The cameras consist of fan-shaped arrays of collimated flight tubes, with suitably chosen detectors situated outside the biological shield. The sight lines view the ITER plasma through slots in the shield blanket and penetrate the vacuum vessel, cryostat, and biological shield through stainless steel windows. This article analyzes the expected performance of several neutron camera arrangements for ITER. In addition to the reference designs, we examine proposed compact cameras, in which neutron fluxes are inferred from N-16 decay gammas in dedicated flowing water loops, and conventional cameras with fewer sight lines and more limited fields of view than in the reference designs. It is shown that the spatial sampling provided by the reference designs is sufficient to satisfy target measurement requirements and that some reduction in field of view may be permissible. The accuracy of measurements with N-16-based compact cameras is not yet established, and they fail to satisfy requirements for parameter range and time resolution by large margins. (C) 1999 American Institute of Physics. [S0034-6748(99)51401-9].

引用

页码：1145 / 1148

页数：4

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