Disruption analysis and response implication of passive plates for the nstx upgrade

Yuhu Zhai; Peter Titus; Art Brooks; Ronald Hatcher

doi:10.13182/FST13-A18086

Disruption analysis and response implication of passive plates for the nstx upgrade

Yuhu Zhai, Peter Titus, Art Brooks, Ronald Hatcher

PPPL Engineering

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The National Spherical Torus eXperiment (NSTX) upgrade project requires analysis qualifications of existing vacuum vessel and passive stabilizing plates for increased plasma performance. Vertical stability is critically dependent on the passive conducting structure that surrounds the plasma. In this paper, the passive plate is analyzed for the upgrade condition during plasma disruption to ensure the level of stress in the plate and the fastener is within its design limits. The counter-bore of the passive plate for bolting is evaluated in detail and counter-bore bushing is redesigned to prevent shear failure during disruptions as a result of high pulling and pushing forces, particularly for support at corner bolts.

Original language	English (US)
Pages (from-to)	255-259
Number of pages	5
Journal	Fusion Science and Technology
Volume	64
Issue number	2
DOIs	https://doi.org/10.13182/FST13-A18086
State	Published - Aug 2013

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Nuclear and High Energy Physics
Nuclear Energy and Engineering
General Materials Science
Mechanical Engineering

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10.13182/FST13-A18086

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abstract = "The National Spherical Torus eXperiment (NSTX) upgrade project requires analysis qualifications of existing vacuum vessel and passive stabilizing plates for increased plasma performance. Vertical stability is critically dependent on the passive conducting structure that surrounds the plasma. In this paper, the passive plate is analyzed for the upgrade condition during plasma disruption to ensure the level of stress in the plate and the fastener is within its design limits. The counter-bore of the passive plate for bolting is evaluated in detail and counter-bore bushing is redesigned to prevent shear failure during disruptions as a result of high pulling and pushing forces, particularly for support at corner bolts.",

author = "Yuhu Zhai and Peter Titus and Art Brooks and Ronald Hatcher",

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AU - Titus, Peter

AU - Brooks, Art

AU - Hatcher, Ronald

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N2 - The National Spherical Torus eXperiment (NSTX) upgrade project requires analysis qualifications of existing vacuum vessel and passive stabilizing plates for increased plasma performance. Vertical stability is critically dependent on the passive conducting structure that surrounds the plasma. In this paper, the passive plate is analyzed for the upgrade condition during plasma disruption to ensure the level of stress in the plate and the fastener is within its design limits. The counter-bore of the passive plate for bolting is evaluated in detail and counter-bore bushing is redesigned to prevent shear failure during disruptions as a result of high pulling and pushing forces, particularly for support at corner bolts.

AB - The National Spherical Torus eXperiment (NSTX) upgrade project requires analysis qualifications of existing vacuum vessel and passive stabilizing plates for increased plasma performance. Vertical stability is critically dependent on the passive conducting structure that surrounds the plasma. In this paper, the passive plate is analyzed for the upgrade condition during plasma disruption to ensure the level of stress in the plate and the fastener is within its design limits. The counter-bore of the passive plate for bolting is evaluated in detail and counter-bore bushing is redesigned to prevent shear failure during disruptions as a result of high pulling and pushing forces, particularly for support at corner bolts.

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Disruption analysis and response implication of passive plates for the nstx upgrade

Abstract

All Science Journal Classification (ASJC) codes

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