# Integrated design strategy for EU-DEMO first wall protection from plasma transients Fusion Engineering and Design 177 (2022) 113067

Francesco Maviglia, Christian Bachmann, Gianfranco Federici, Thomas Franke, Mattia Siccinio, Raffaele Albanese, Roberto Ambrosino, Wayne Arter, Roberto Bonifetto, Giuseppe Calabrò, et al.

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Francesco Maviglia, Christian Bachmann, Gianfranco Federici, Thomas Franke, Mattia Siccinio, et al. Integrated design strategy for EU-DEMO first wall protection from plasma transients Fusion Engineering and Design 177 (2022) 113067. Fusion Engineering and Design, 2022, 178, pp.113125. 10.1016/j.fusengdes.2022.113125. cea-04765260

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Integrated design strategy for EU-DEMO first wall protection from plasma
transients Fusion Engineering and Design 177 (2022) 113067

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Francesco Maviglia<sup>a,b,*</sup>, Christian Bachmann<sup>a,n</sup>, Gianfranco Federici<sup>a</sup>, Thomas Franke<sup>a,c</sup>,
Mattia Siccinio<sup>a,c</sup>, Raffaele Albanese<sup>d</sup>, Roberto Ambrosino<sup>d</sup>, Wayne Arter<sup>m</sup>,
Roberto Bonifetto<sup>e</sup>, Giuseppe Calabrò<sup>f</sup>, Riccardo De Luca<sup>f</sup>, Luigi E. Di Grazia<sup>o</sup>, Emiliano Fable<sup>c</sup>,
Pierluigi Fanelli<sup>f</sup>, Alessandra Fanni<sup>g</sup>, Mehdi Firdaouss<sup>h</sup>, Jonathan Gerardin<sup>i</sup>,
Riccardo Lombroni<sup>f</sup>, Massimiliano Mattei<sup>d</sup>, Matteo Moscheni<sup>e</sup>, William Morris<sup>m</sup>,
Gabriella Pautasso<sup>c</sup>, Sergey Pestchanyi<sup>l</sup>, Giuseppe Ramogida<sup>b</sup>, Maria Lorena Richiusa<sup>m</sup>,
Giuliana Sias<sup>g</sup>, Fabio Subba<sup>e</sup>, Fabio Villone<sup>d</sup>, Jeong-Ha You<sup>c</sup>, Zsolt Vizvary<sup>m</sup>

The publisher regrets that **Table 1** has the wrong formatting. The
correct version of the table is hereafter reported:

<footnote>ª EUROfusion – Programme Management Unit, Boltzmannstrasse 2, 85748 Garching, Germany</footnote>

<footnote>ᵇAssociazione EURATOM-ENEA sulla Fusione, C.R. Frascati, C.P. 65-00044 Frascati, Rome, Italy</footnote>

<footnote>ᶜMax-Planck-Institut für Plasmaphysik, Garching, Germany</footnote>

<footnote>d Consorzio CREATE, Univ. Napoli Federico II - DIETI, 80125 Napoli, Italy</footnote>

<footnote>e NEMO Group, Dip. Energia, Politecnico di Torino, C.so Duca degli Abruzzi24, Torino 10129, Italy</footnote>

<footnote>f DEIm Department, University of Tuscia, Largo dell'Università, 01100 Viterbo, Italy</footnote>

<footnote>g Electrical and Electronic Engin. Dept.-University of Cagliari, Piazza D'Armi, 09123, Cagliari, Italy</footnote>

<footnote>h CEA, F-13108 St Paul-Lez-Durance, France</footnote>

<footnote n="1">¹Institute of Plasma Physics, Czech Academy of Sciences, Prague, Czech Republic</footnote>

<footnote n="1">¹ KIT, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, Germany</footnote>

<footnote>n CCFE, Culham Science Centre, Abingdon, Oxon, OX14 3DB, UK</footnote>

<footnote>Technical University of Denmark, Lynghy, Denmark</footnote>

<footnote>ᵃ Consorzio CREATE, Univ. della Campania L. Vanvitelli, Dip. Ingegneria, 80131 Aversa, Italy</footnote>

<footnote>DOI of original article: https://doi.org/10.1016/j.fusengdes.2022.113067.</footnote>

<footnote>* Corresponding author.
E-mail address: francesco.maviglia@euro-fusion.org (F. Maviglia).</footnote>

<footnote>https://doi.org/10.1016/j.fusengdes.2022.113125</footnote>
<caption>**Table 1**</caption>

Summary of all the plasma steady state and transient cases analyzed. The results, in the Output columns, show the HF due to charged particles (in MW/m², while in **bold** are indicated in GW/m²), evaluated with 3D field-line tracing codes (except the mitigated disruption where, instead, the photonic radiation, including toroidal and poloidal peaking factors, is reported). For the SOF and EOF are indicated in brackets, in *italic*, the HF including the radiation. *represents a D-VDE with the plasma shifted downwards (conservative). A subset of critical cases, in the output columns, is indicated with a superscript number within brackets

<table><thead><tr><th colspan="3">Inputs</th><th colspan="5">Outputs: max HF (MW/m²)<br>(Italic): with radiation, Bold: GW/m²</th></tr><tr><th>Scenario</th><th>Case</th><th>P<sub>SOL</sub> (MW)<br>+(P<sub>RAD</sub>)</th><th>λ<sub>q</sub><br>(mm)</th><th>Deposition<br>time</th><th>OML</th><th>UL</th><th>OLL</th><th>IML</th><th>FW</th></tr></thead><tbody><tr><td>SOF</td><td>Diverted</td><td>69<br>+(300 core + 130 SOL)</td><td>50</td><td>Steady<br>state</td><td>0.53<br>(0.65)</td><td>0.82<br>(1.10)</td><td>0.09<br>(0.33)</td><td>0<br>(0.19)</td><td>0.40<br>(0.59)</td></tr><tr><td>EOF</td><td>Diverted</td><td>69<br>+(300 core + 130 SOL)</td><td>50</td><td>Steady<br>state</td><td>0.54<br>(0.74)</td><td>1.25<br>(1.42)</td><td>0.1<br>(0.36)</td><td>0.9<br>(1.11)</td><td>0.48<br>(0.67)</td></tr><tr><td>Min disr</td><td>Diverted</td><td>69</td><td>50</td><td>15-50ms</td><td>&lt;0.01</td><td>0.13</td><td>0.01</td><td>3.06</td><td>0.69</td></tr><tr><td>ELM</td><td>Diverted</td><td>69</td><td>50</td><td>15-50ms</td><td>1.40</td><td>0.56</td><td>0</td><td>0</td><td>1.48</td></tr><tr><td>Ramp-Up</td><td>Limited</td><td>3.5</td><td>6</td><td>17.5-35s</td><td>2.37</td><td>0</td><td>0</td><td>0</td><td>0.29</td></tr><tr><td rowspan="2">Ramp-Down</td><td rowspan="2">Limited</td><td>5</td><td>6</td><td>25-50s</td><td>&lt;0.01</td><td>&lt;0.01</td><td>&lt;0.01</td><td>0.02</td><td>0.01</td></tr><tr><td>5</td><td>50</td><td>25-50s</td><td>&lt;0.01</td><td>&lt;0.01</td><td>&lt;0.01</td><td>1.39</td><td>0.60</td></tr><tr><td rowspan="5">U-VDE</td><td rowspan="2">First<br>touch</td><td>69</td><td>1</td><td>20-35ms</td><td>&lt;0.01</td><td>114<sup>(2)</sup></td><td>&lt;0.01</td><td>0</td><td>0</td></tr><tr><td>69</td><td>5</td><td>20-35ms</td><td>&lt;0.01</td><td>15.6</td><td>&lt;0.01</td><td>0</td><td>0.02</td></tr><tr><td>TQ</td><td>325·10<sup>3</sup></td><td>7</td><td>1-4ms</td><td>&lt;0.01</td><td>63<sup>(3)</sup></td><td>0</td><td>&lt;0.01</td><td>138<sup>(8)</sup></td></tr><tr><td>Current<br>Quench</td><td>10</td><td>10</td><td>74-200ms</td><td>&lt;0.01</td><td>2.52</td><td>0</td><td>&lt;0.01</td><td>0.01</td></tr><tr><td>10</td><td>30</td><td>74-200ms</td><td>&lt;0.01</td><td>1.53</td><td>0</td><td>&lt;0.01</td><td>0.11</td></tr><tr><td rowspan="5">D-VDE</td><td rowspan="2">First<br>touch</td><td>10 (*69)</td><td>10 (*1)</td><td>15-35ms</td><td>&lt;0.01<br>(*0.01)</td><td>0<br>(*0)</td><td>&lt;0.01<br>(*24.8)</td><td>&lt;0.01<br>(*&lt;0.01)</td><td>&lt;0.01<br>(*&lt;0.01)</td></tr><tr><td>10 (*69)</td><td>30 (*5)</td><td>15-35ms</td><td>&lt;0.01<br>(*0.01)</td><td>0<br>(*0)</td><td>&lt;0.01<br>(*7.83)</td><td>&lt;0.01<br>(*&lt;0.01)</td><td>0.08<br>(*0.01)</td></tr><tr><td>TQ</td><td>325·10<sup>3</sup></td><td>7</td><td>1-4ms</td><td>0.77<br>(*182)<sup>(1)</sup></td><td>0<br>(*0)</td><td>4.4<br>(*306)<sup>(4)</sup></td><td>0.84<br>(*11.3)</td><td>8.11<br>(*292)<sup>(9)</sup></td></tr><tr><td>Current<br>quench</td><td>10</td><td>10</td><td>74-200ms</td><td>&lt;0.01</td><td>&lt;0.01</td><td>&lt;0.01</td><td>&lt;0.01</td><td>&lt;0.01</td></tr><tr><td>10</td><td>30</td><td>74-200ms</td><td>&lt;0.01</td><td>&lt;0.01</td><td>&lt;0.01</td><td>&lt;0.01</td><td>&lt;0.01</td></tr><tr><td rowspan="2">H-L<br>transition</td><td rowspan="2">Limited<br>(inboard)</td><td>30</td><td>2</td><td>1-5s</td><td>&lt;0.01</td><td>&lt;0.01</td><td>&lt;0.01</td><td>64<sup>(5)</sup></td><td>1.06</td></tr><tr><td>30</td><td>4</td><td>1-5s</td><td>&lt;0.01</td><td>&lt;0.01</td><td>&lt;0.01</td><td>44.5<sup>(6)</sup></td><td>5.48</td></tr><tr><td rowspan="3">Major<br>Disruption<br>(MD)</td><td>TQ</td><td>325·10<sup>3</sup></td><td>7</td><td>1-4ms</td><td>0.61</td><td>1.46</td><td>0.84</td><td>1.44<sup>(7)</sup></td><td>333<sup>(10)</sup></td></tr><tr><td rowspan="2">CQ</td><td>10</td><td>10</td><td>74-200ms</td><td>&lt;0.01</td><td>&lt;0.01</td><td>&lt;0.01</td><td>0.01</td><td>&lt;0.01</td></tr><tr><td>10</td><td>30</td><td>74-200ms</td><td>&lt;0.01</td><td>&lt;0.01</td><td>&lt;0.01</td><td>0.21</td><td>0.05</td></tr><tr><td>Mitig.disr.</td><td>TQ</td><td>P<sub>RAD</sub>: 2.2 GW</td><td></td><td>1ms</td><td>2<sup>(11)</sup></td><td>1.8<sup>(11)</sup></td><td>1.8</td><td>1.5</td><td>2<sup>(11)</sup></td></tr></tbody></table>

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