Laser-assisted cleaning of beryllium-containing mirror samples from JET and PISCES-B

M Wisse; L Marot; A Widdowson; M Rubel; D Ivanova; P Petersson; R P Doerner; M J Baldwin; Jari Likonen; E Alves; Antti Hakola; Seppo Koivuranta; R Steiner; E Meyer

doi:10.1016/j.fusengdes.2014.01.042

Laser-assisted cleaning of beryllium-containing mirror samples from JET and PISCES-B

M Wisse (Corresponding Author), L Marot, A Widdowson, M Rubel, D Ivanova, P Petersson, R P Doerner, M J Baldwin, Jari Likonen, E Alves, Antti Hakola, Seppo Koivuranta, R Steiner, E Meyer

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

23 Citations (Scopus)

Abstract

A set of seven polycrystalline mirror samples retrieved from the JET tokamak has been cleaned in vacuum using a pulsed laser system. The surfaces of samples exposed to plasma during 2008-2009 campaigns as part of the second phase of a comprehensive first mirror test contained a mixture of carbon, beryllium and tritium. For this reason, the samples were treated in a vacuum chamber constructed specially for this purpose. In some cases mirrors show an increase of the specular reflectivity after cleaning, though beryllium and carbon deposits were not fully removed. Additionally, three samples coated in PISCES-B with a 110-120 nm beryllium layer were subjected to laser cleaning tests as well

Original language	English
Pages (from-to)	122-130
Number of pages	8
Journal	Fusion Engineering and Design
Volume	89
Issue number	2
DOIs	https://doi.org/10.1016/j.fusengdes.2014.01.042
Publication status	Published - 2014
MoE publication type	A1 Journal article-refereed

Keywords

Beryllium
first mirrors
ITER
laser cleaning

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.fusengdes.2014.01.042

Cite this

Wisse, M., Marot, L., Widdowson, A., Rubel, M., Ivanova, D., Petersson, P., Doerner, R. P., Baldwin, M. J., Likonen, J., Alves, E., Hakola, A., Koivuranta, S., Steiner, R., & Meyer, E. (2014). Laser-assisted cleaning of beryllium-containing mirror samples from JET and PISCES-B. Fusion Engineering and Design, 89(2), 122-130. https://doi.org/10.1016/j.fusengdes.2014.01.042

@article{4389d7b840194bec8d4a49add50f2f48,

title = "Laser-assisted cleaning of beryllium-containing mirror samples from JET and PISCES-B",

abstract = "A set of seven polycrystalline mirror samples retrieved from the JET tokamak has been cleaned in vacuum using a pulsed laser system. The surfaces of samples exposed to plasma during 2008-2009 campaigns as part of the second phase of a comprehensive first mirror test contained a mixture of carbon, beryllium and tritium. For this reason, the samples were treated in a vacuum chamber constructed specially for this purpose. In some cases mirrors show an increase of the specular reflectivity after cleaning, though beryllium and carbon deposits were not fully removed. Additionally, three samples coated in PISCES-B with a 110-120 nm beryllium layer were subjected to laser cleaning tests as well",

keywords = "Beryllium, first mirrors, ITER, laser cleaning",

author = "M Wisse and L Marot and A Widdowson and M Rubel and D Ivanova and P Petersson and Doerner, {R P} and Baldwin, {M J} and Jari Likonen and E Alves and Antti Hakola and Seppo Koivuranta and R Steiner and E Meyer",

year = "2014",

doi = "10.1016/j.fusengdes.2014.01.042",

language = "English",

volume = "89",

pages = "122--130",

journal = "Fusion Engineering and Design",

issn = "0920-3796",

publisher = "Elsevier",

number = "2",

}

TY - JOUR

T1 - Laser-assisted cleaning of beryllium-containing mirror samples from JET and PISCES-B

AU - Wisse, M

AU - Marot, L

AU - Widdowson, A

AU - Rubel, M

AU - Ivanova, D

AU - Petersson, P

AU - Doerner, R P

AU - Baldwin, M J

AU - Likonen, Jari

AU - Alves, E

AU - Hakola, Antti

AU - Koivuranta, Seppo

AU - Steiner, R

AU - Meyer, E

PY - 2014

Y1 - 2014

N2 - A set of seven polycrystalline mirror samples retrieved from the JET tokamak has been cleaned in vacuum using a pulsed laser system. The surfaces of samples exposed to plasma during 2008-2009 campaigns as part of the second phase of a comprehensive first mirror test contained a mixture of carbon, beryllium and tritium. For this reason, the samples were treated in a vacuum chamber constructed specially for this purpose. In some cases mirrors show an increase of the specular reflectivity after cleaning, though beryllium and carbon deposits were not fully removed. Additionally, three samples coated in PISCES-B with a 110-120 nm beryllium layer were subjected to laser cleaning tests as well

AB - A set of seven polycrystalline mirror samples retrieved from the JET tokamak has been cleaned in vacuum using a pulsed laser system. The surfaces of samples exposed to plasma during 2008-2009 campaigns as part of the second phase of a comprehensive first mirror test contained a mixture of carbon, beryllium and tritium. For this reason, the samples were treated in a vacuum chamber constructed specially for this purpose. In some cases mirrors show an increase of the specular reflectivity after cleaning, though beryllium and carbon deposits were not fully removed. Additionally, three samples coated in PISCES-B with a 110-120 nm beryllium layer were subjected to laser cleaning tests as well

KW - Beryllium

KW - first mirrors

KW - ITER

KW - laser cleaning

U2 - 10.1016/j.fusengdes.2014.01.042

DO - 10.1016/j.fusengdes.2014.01.042

M3 - Article

SN - 0920-3796

VL - 89

SP - 122

EP - 130

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

IS - 2

ER -

Laser-assisted cleaning of beryllium-containing mirror samples from JET and PISCES-B

Abstract

Keywords

UN SDGs

Access to Document

Fingerprint

Cite this