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

Research output: Contribution to journalJournal articleResearchpeer-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 languageEnglish
JournalFusion Engineering and Design
Volume134
Pages (from-to)22-28
Number of pages7
ISSN0920-3796
DOIs
Publication statusPublished - 2018

Keywords

  • Collective Thomson Scattering
  • CTS
  • Flux
  • ITER
  • MCNP
  • Neutronics
  • Nuclear heat loads

Cite this

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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{\cc}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",
volume = "134",
pages = "22--28",
journal = "Fusion Engineering and Design",
issn = "0920-3796",
publisher = "Elsevier",

}

Neutronics analysis of the ITER Collective Thomson Scattering system. / Lopes, A.; Luís, K. A.; Klinkby, E.; Nonbøl, E.; Jessen, M.; Moutinho, J.; Salewski, M.; Rasmussen, J.; Gonçalves, B.; Lauritzen, B.; Korsholm, S.B.; Larsen, Helge; Vidal, C.

In: Fusion Engineering and Design, Vol. 134, 2018, p. 22-28.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

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

VL - 134

SP - 22

EP - 28

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

SN - 0920-3796

ER -