OLMAT - Revision history

Admin at 08:47, 1 May 2024

2024-05-01T08:47:03Z

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	The OLMAT (Optimization of ~~liquid targets~~) facility at the [[Laboratorio Nacional de Fusión]] is aimed at testing LM (Liquid Metal) prototypes under DEMO-relevant heat loads <ref>Alegre D., Oyarzabal E., Tafalla D., Liniers M., Soleto A. and Tabarés F.L. (2020) ''Design and testing of advanced liquid metal targets for DEMO divertor: the OLMAT project''. [[doi:10.1007/s10894-020-00254-5\|J. Fusion Energy 39 411]]</ref>.		The OLMAT (Optimization of Liquid Metal Targets) facility at the [[Laboratorio Nacional de Fusión]] is aimed at testing LM (Liquid Metal) prototypes under DEMO-relevant heat loads <ref>Alegre D., Oyarzabal E., Tafalla D., Liniers M., Soleto A. and Tabarés F.L. (2020) ''Design and testing of advanced liquid metal targets for DEMO divertor: the OLMAT project''. [[doi:10.1007/s10894-020-00254-5\|J. Fusion Energy 39 411]]</ref>.

	[[File:OLMAT.jpg\|400px\|thumb\|right\|CAD design of OLMAT. (a) irradiation chamber; (b) valve to NBI; (c) valve to TJ-II; (d) pre-chamber for sample loading; (e) sample insertion system; (f) upper turbopump with liquid metal condensation bafflers; (g) BaF2 optical window for infrared thermography; (h) diagnostic ports and windows.]]		[[File:OLMAT.jpg\|400px\|thumb\|right\|CAD design of OLMAT. (a) irradiation chamber; (b) valve to NBI; (c) valve to TJ-II; (d) pre-chamber for sample loading; (e) sample insertion system; (f) upper turbopump with liquid metal condensation bafflers; (g) BaF2 optical window for infrared thermography; (h) diagnostic ports and windows.]]
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	Moreover, the NBI beam is wide enough to irradiate large samples (<20 cm diameter), allowing redeposition studies of the eroded and evaporated material.		Moreover, the NBI beam is wide enough to irradiate large samples (<20 cm diameter), allowing redeposition studies of the eroded and evaporated material.
	In a second stage of the project a Q-CW, high-power fibre laser is used to simulate ELM-like powers in a small area, or the strike point power deposition profile.		In a second stage of the project a Q-CW, high-power fibre laser is used to simulate ELM-like powers in a small area, or the strike point power deposition profile.

			[[File:OLMAT1.png\|500px\|thumb\|center\|The OLMAT facility and TJ-II]]

	== References ==		== References ==
	<references />		<references />

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The OLMAT (Optimization of liquid targets) facility at the [[Laboratorio Nacional de Fusión]] is aimed at testing LM (Liquid Metal) prototypes under DEMO-relevant heat loads <ref>Alegre D., Oyarzabal E., Tafalla D., Liniers M., Soleto A. and Tabarés F.L. (2020) ''Design and testing of advanced liquid metal targets for DEMO divertor: the OLMAT project''. [[doi:10.1007/s10894-020-00254-5|J. Fusion Energy 39 411]]</ref>.

[[File:OLMAT.jpg|400px|thumb|right|CAD design of OLMAT. (a) irradiation chamber; (b) valve to NBI; (c) valve to TJ-II; (d) pre-chamber for sample loading; (e) sample insertion system; (f) upper turbopump with liquid metal condensation bafflers; (g) BaF2 optical window for infrared thermography; (h) diagnostic ports and windows.]]

It is based on the use of the [[TJ-II:Neutral Beam Injection|neutral beam injectors]] (NBI) of the [[TJ-II]] stellarator for the irradiation of LM targets (mainly CPS) at [[DEMO]]-relevant powers.
The characteristics of the NBI beam are adequate for the simulation of steady state and slow transient powers (10–20 MW m<sup>−2</sup>) including vapour shielding and fatigue studies.
Moreover, the NBI beam is wide enough to irradiate large samples (<20 cm diameter), allowing redeposition studies of the eroded and evaporated material.
In a second stage of the project a Q-CW, high-power fibre laser is used to simulate ELM-like powers in a small area, or the strike point power deposition profile.

== References ==
<references />