Neutronics analysis of the ITER Collective Thomson Scattering system

A. Lopes; K. A. Luís; E. Klinkby; E. Nonbøl; M. Jessen; J. Moutinho; M. Salewski; J. Rasmussen; B. Gonçalves; B. Lauritzen; S.B. Korsholm; Helge Larsen; C. Vidal

doi:10.1016/j.fusengdes.2018.06.008

Neutronics analysis of the ITER Collective Thomson Scattering system

A. Lopes^*, K. A. Luís, E. Klinkby, E. Nonbøl, M. Jessen, J. Moutinho, M. Salewski, J. Rasmussen, B. Gonçalves, B. Lauritzen, S.B. Korsholm, Helge Larsen, C. Vidal

^*Corresponding author for this work

University of Lisbon

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

The Collective Thomson Scattering (CTS) will be the ITER diagnostic responsible for measuring the alpha-particle velocity distribution. Using mirrors, a powerful microwave beam is directed into the plasma via an opening in the plasma-facing wall. The microwaves will scatter off fluctuations in the plasma, and the scattered signal is recorded after transmission through a series of mirrors and waveguides. Several components of the CTS system will be directly exposed to neutron radiation from the plasma which can change the properties of the components and reduce their lifetime. In this paper, a neutronics analysis is presented for the CTS system. A study on the influence of different materials on the nuclear heat loads in the launcher mirror is also presented, along with the design of a simple cooling system. All the studies were conducted using the Monte Carlo program MCNP6. The outputs, in particular the nuclear heat loads, will be used to perform the thermal analysis of the system.

Original language	English
Journal	Fusion Engineering and Design
Volume	134
Pages (from-to)	22-28
Number of pages	7
ISSN	0920-3796
DOIs	https://doi.org/10.1016/j.fusengdes.2018.06.008
Publication status	Published - 2018

Keywords

Collective Thomson Scattering
CTS
Flux
ITER
MCNP
Neutronics
Nuclear heat loads

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title = "Neutronics analysis of the ITER Collective Thomson Scattering system",

abstract = "The Collective Thomson Scattering (CTS) will be the ITER diagnostic responsible for measuring the alpha-particle velocity distribution. Using mirrors, a powerful microwave beam is directed into the plasma via an opening in the plasma-facing wall. The microwaves will scatter off fluctuations in the plasma, and the scattered signal is recorded after transmission through a series of mirrors and waveguides. Several components of the CTS system will be directly exposed to neutron radiation from the plasma which can change the properties of the components and reduce their lifetime. In this paper, a neutronics analysis is presented for the CTS system. A study on the influence of different materials on the nuclear heat loads in the launcher mirror is also presented, along with the design of a simple cooling system. All the studies were conducted using the Monte Carlo program MCNP6. The outputs, in particular the nuclear heat loads, will be used to perform the thermal analysis of the system.",

keywords = "Collective Thomson Scattering, CTS, Flux, ITER, MCNP, Neutronics, Nuclear heat loads",

author = "A. Lopes and Lu{\'i}s, {K. A.} and E. Klinkby and E. Nonb{\o}l and M. Jessen and J. Moutinho and M. Salewski and J. Rasmussen and B. Gon{\c c}alves and B. Lauritzen and S.B. Korsholm and Helge Larsen and C. Vidal",

year = "2018",

doi = "10.1016/j.fusengdes.2018.06.008",

language = "English",

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journal = "Fusion Engineering and Design",

issn = "0920-3796",

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T1 - Neutronics analysis of the ITER Collective Thomson Scattering system

AU - Lopes, A.

AU - Luís, K. A.

AU - Klinkby, E.

AU - Nonbøl, E.

AU - Jessen, M.

AU - Moutinho, J.

AU - Salewski, M.

AU - Rasmussen, J.

AU - Gonçalves, B.

AU - Lauritzen, B.

AU - Korsholm, S.B.

AU - Larsen, Helge

AU - Vidal, C.

PY - 2018

Y1 - 2018

N2 - The Collective Thomson Scattering (CTS) will be the ITER diagnostic responsible for measuring the alpha-particle velocity distribution. Using mirrors, a powerful microwave beam is directed into the plasma via an opening in the plasma-facing wall. The microwaves will scatter off fluctuations in the plasma, and the scattered signal is recorded after transmission through a series of mirrors and waveguides. Several components of the CTS system will be directly exposed to neutron radiation from the plasma which can change the properties of the components and reduce their lifetime. In this paper, a neutronics analysis is presented for the CTS system. A study on the influence of different materials on the nuclear heat loads in the launcher mirror is also presented, along with the design of a simple cooling system. All the studies were conducted using the Monte Carlo program MCNP6. The outputs, in particular the nuclear heat loads, will be used to perform the thermal analysis of the system.

AB - The Collective Thomson Scattering (CTS) will be the ITER diagnostic responsible for measuring the alpha-particle velocity distribution. Using mirrors, a powerful microwave beam is directed into the plasma via an opening in the plasma-facing wall. The microwaves will scatter off fluctuations in the plasma, and the scattered signal is recorded after transmission through a series of mirrors and waveguides. Several components of the CTS system will be directly exposed to neutron radiation from the plasma which can change the properties of the components and reduce their lifetime. In this paper, a neutronics analysis is presented for the CTS system. A study on the influence of different materials on the nuclear heat loads in the launcher mirror is also presented, along with the design of a simple cooling system. All the studies were conducted using the Monte Carlo program MCNP6. The outputs, in particular the nuclear heat loads, will be used to perform the thermal analysis of the system.

KW - Collective Thomson Scattering

KW - CTS

KW - Flux

KW - ITER

KW - MCNP

KW - Neutronics

KW - Nuclear heat loads

U2 - 10.1016/j.fusengdes.2018.06.008

DO - 10.1016/j.fusengdes.2018.06.008

M3 - Journal article

SN - 0920-3796

VL - 134

SP - 22

EP - 28

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

ER -

Neutronics analysis of the ITER Collective Thomson Scattering system

Abstract

Keywords

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