Main Page - Revision history

Edelaluna: /* Selected entries */

2024-04-11T08:41:53Z

Selected entries

← Older revision		Revision as of 10:41, 11 April 2024
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	* [[Job opportunities]]		* [[Job opportunities]]
	* [[Alternative fusion devices‎]]		* [[Alternative fusion devices‎]]
			* [[LNF:Nationally Funded Projects‎]]

	== Special index pages ==		== Special index pages ==

Admin at 07:14, 7 March 2024

2024-03-07T07:14:53Z

← Older revision		Revision as of 09:14, 7 March 2024
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	This is the FusionWiki, jointly hosted by		This is the FusionWiki, jointly hosted by
	[[Laboratorio Nacional de Fusión\|LNF]] and [[Fusenet]].		[[Laboratorio Nacional de Fusión\|LNF]] and [[Fusenet]].
	It is associated with two domains: [~~http~~://~~fusionwiki~~.ciemat.es ~~fusionwiki~~.ciemat.es] and [http://wiki.fusenet.eu wiki.fusenet.eu].		It is associated with two domains: [https://wiki.fusion.ciemat.es wiki.fusion.ciemat.es] and [http://wiki.fusenet.eu wiki.fusenet.eu].

	The goal of this Wiki ([[:Wikipedia:Wiki\|''what is a wiki?'']]) is to collect specialist information on issues related to '''fusion and plasma physics''':		The goal of this Wiki ([[:Wikipedia:Wiki\|''what is a wiki?'']]) is to collect specialist information on issues related to '''fusion and plasma physics''':

Admin: /* FusionWiki in the news */

2023-08-22T09:04:03Z

FusionWiki in the news

← Older revision		Revision as of 11:04, 22 August 2023
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	== FusionWiki in the news ==		== FusionWiki in the news ==

	* [https://~~www~~.~~euro-fusion.org~~/~~wpcms~~/wp-~~content/uploads/2011/12/FiE.pdf~~ Fusion in Europe '''2''' (2011) p. 17]		* [https://issuu.com/efda/docs/fusion-in-europe_2011-2 Fusion in Europe '''2''' (2011) p. 17]
	* [https://www.euro-fusion.org/newsletter/fusion-news/ ''FusionWiki needs more pages'', EuroFusion NewsLetter, December 12th, 2016]		* [https://www.euro-fusion.org/newsletter/fusion-news/ ''FusionWiki needs more pages'', EuroFusion NewsLetter, December 12th, 2016]

Admin: Revert Main Page

2019-11-01T07:47:24Z

Revert Main Page

@@ Line 1: / Line 1: @@
-= Experimental campaign ==
+[[File:Soho.gif|frame|right|A prominence on the sun, an arc of plasma rising into the corona. Image credit: [http://nasa.gov/soho SOHO]]]
-Autumn
+This is the FusionWiki, jointly hosted by
-== Proposal title ==
+The goal of this Wiki ([[:Wikipedia:Wiki|''what is a wiki?'']]) is to collect specialist information on issues related to '''fusion and plasma physics''':
-Studies of LIquid Metal Insertion in TJ-II
+* Research topics (physics, engineering, theory, experiment, [[:Category:Software|software]], [[Diagnostics|diagnostics]], [[Software tools|tools]], [[Journals|journals]], [[Data analysis techniques|data analysis techniques]], [[Fusion databases|databases]], concepts, terminology, ...), with links to the main references in the field
-== Name and affiliation of proponent =
+== How to help ==
-== References ==
+Please feel free to contribute.
-<references /> <!-- DO NOT REMOVE THIS LINE OR YOU WON'T BE ABLE TO INCLUDE REFERENCES -->
+* See [[FusionWiki:Community Portal|Community Portal]] for a summary of the goal of the FusionWiki and information about what you can do to help.
-F L Tabares et al. Experimental tests of LiSn alloys as potential liquid metal for the Divertor target in a Fusion Reactor. Nucl Mat Ene. (2017) in press<hr>
+* See [[FusionWiki:About|About FusionWiki]] for more detail on the goal of the FusionWiki and the kind of content needed.
-F L Tabares et al Comparative studies of Li and LiSn….  Phys Scripta 2017 (in press)
+* See [[Help:Contents|Help]] for practical and easy instructions on how to create and edit pages.
-[[Category:TJ-II internal documents]]
+== Selected entries ==
-[[Category:TJ-II experimental proposals Autumn 2018]]
+* [[Nuclear fusion]]; [[Books]] on fusion and plasma physics
-== Name and affiliation of proponent =
+== Special index pages ==
-== References ==
+[[Special:Categories|Categories of pages]]
-[[Category:TJ-II internal documents]]
+[[Special:AllPages|All current pages]]
-[[Category:TJ-II experimental proposals Autum 2019]]

Admin: Reverted edits by Macarena.Liniers (talk) to last revision by Tabares

2019-11-01T07:44:39Z

Reverted edits by Macarena.Liniers (talk) to last revision by Tabares

← Older revision		Revision as of 09:44, 1 November 2019
Line 1:		Line 1:
	= Experimental campaign ==		= Experimental campaign ==
	~~2019~~ Autumn		2018 Autumn

	== Proposal title ==		== Proposal title ==
	~~Infrared thermography~~ of ~~the NBI Beam Stop: NBI contribution to plasma fuelling~~		Studies of LIquid Metal Insertion in TJ-II

	== Name and affiliation of proponent =		== Name and affiliation of proponent =
	~~Macarena Liniers Vázquez (Laboratorio Nacional de Fusión)~~		Paco Tabares, Eider Oyarzabal, David Tafalla
	== Details of contact person at LNF (if applicable) ==		== Details of contact person at LNF (if applicable) ==
	~~Macarena Liniers~~		Paco Tabares
	== Description of the activity, including motivation/objectives and experience of the proponent (typically one-two pages)==		== Description of the activity, including motivation/objectives and experience of the proponent (typically one-two pages)==
	~~To study the power balance~~ of ~~the injected beams, and their contribution to plasma fuelling, Infrared thermography of the NBI Beam Stop (BS) will be used.~~		Continuation of previous experiments: Insertion of Sn, LiSn and Li fingers in CPS support
	~~The IR camera FLIR X6580sc, commissioned during the~~ previous campaign, gave preliminary results on the “shine-trough” and reionization losses through the IR images of the “Beam Stop”. A correlation between reionization losses and local pressure at the beam duct was established.
	The obtained IR images did not fully correspond to the expected behaviour of the BS material, a textured graphite with easy conductivity in the plate plane. The temperatures were higher than expected, and their time traces showed a “saturation” effect. A number of tests were performed to ascertain the thermal character of this behaviour. It was confirmed that the saturation is not a camera detector effect, but a “real” evolution of the IR radiance on the camera.
	In order to perform a correct analysis of the thermal images, it is necessary to study the relative importance of the different effects that contribute to the plate temperature evolution, and to the IR radiance of the plate surface in the camera wave-length range (3.5-5 m). Aside from the heat conduction in the graphite plate bulk upon beam interception:
	~~-thermal behaviour (conduction)~~ of ~~the layers of Li, B, and their compounds, that are deposited on the BS graphite during Li and B evaporation~~, and ~~subsequent plasma operation~~
	~~-Emissivity changes of the graphite surface with temperature due to the deposited layers~~
	~~-Line emission of H0,~~ Li~~, B, C and their compounds, in the 3.5-5.0 m range~~

	~~In order to obtain the beam fraction deposited~~ in ~~the plasma, a well-defined correlation between the beam power intercepted by the BS, and the measured surface temperature must be found.~~
	The high frame rate of the new camera will allow us to discriminate between fast processes (such as line-emission) and slow processes (thermal conduction), and thereby interpret the observed IR radiation behaviour.
	~~TJ-II experimental campaign needs:~~
	~~-As soon as the beams are ready (mid-May) beam pulses without B are required.~~
	1. Spectrograms of the IR light (between 0.8-1.5 m ) coming from the BS area are necessary, to study relevant emission lines and determine their correlative lines in the 3.5-5 m range, and their intensity relative to the “background” grey body emission
	~~2. Visible and UV spectra of light coming from the BS area, to study the species present and their contribution to radiance in the 3.5-5 m range~~
	~~3. Capture IR images of the BS with increased frequency to study the Temperature rise and fall and compare with the time scales of the IR emission effects (grey body, line emission)~~
	~~4. Perform beam power scans to study the correlation between BS temperature and Beam power~~
	~~5. Perform a number of pulses with B to estimate the re-ionization losses~~
	~~-Towards the end of the campaign:~~
	~~6. Beam pulses on the Beam Calorimeter with the new 12 mm lens~~

	== If applicable, International or National funding project or entity ==		== If applicable, International or National funding project or entity ==
	~~Proyecto Plan Nacional FIS2017-89326-R~~		1P120 MINECO, TF LMD EuroFusion
	== Description of required resources ==		== Description of required resources ==
	Required resources:		Required resources:
	* Number of plasma discharges or days of operation: ~~2 days of operation + 2 beam pulses to be used for reference in several experiments~~		* Number of plasma discharges or days of operation:
	* Essential diagnostic systems:~~: IR spectroscopy, VUV spectroscopy plasma density, NPA (tangential), IR Thermography, Fast Ion gauges, Halpha~~		* Essential diagnostic systems:
	* Type of plasmas (heating configuration):~~several different densities~~		* Type of plasmas (heating configuration):
	* Specific requirements on wall conditioning if any:~~reference pulses one day previous to Li, one day next to Li~~		* Specific requirements on wall conditioning if any:
	* External users: need a local computer account for data access: no		* External users: need a local computer account for data access: yes/no
	* Any external equipment to be integrated? Provide description and integration needs:		* Any external equipment to be integrated? Provide description and integration needs:
			Biasing Power source ad Control
	== Preferred dates and degree of flexibility ==		== Preferred dates and degree of flexibility ==
	~~One day in Mid~~-~~November (one day previous~~ to ~~Li, one day next to Li) and one day at end of campaign~~		10-03-2018 to 05-06-2018

	== References ==		== References ==
	<references /> <!-- DO NOT REMOVE THIS LINE OR YOU WON'T BE ABLE TO INCLUDE REFERENCES -->		<references /> <!-- DO NOT REMOVE THIS LINE OR YOU WON'T BE ABLE TO INCLUDE REFERENCES -->
	~~-M. Liniers~~ et al.~~, New infrared imaging diagnostic~~ for the ~~Neutral Beam Heating System at the TJ-II stellarator~~		F L Tabares et al. Experimental tests of LiSn alloys as potential liquid metal for the Divertor target in a Fusion Reactor. Nucl Mat Ene. (2017) in press<hr>
	~~Journal~~ of ~~Instrumentation, Volume 14, September 2019~~		F L Tabares et al Comparative studies of Li and LiSn…. Phys Scripta 2017 (in press)
	~~3rd European Conference on Plasma Diagnostics~~ (~~ECPD2019~~)

	[[TJ-II:Experimental proposals\|Back to list of experimental proposals]]		[[TJ-II:Experimental proposals\|Back to list of experimental proposals]]

Macarena.Liniers: /* = Macarena Liniers Vázquez (Laboratorio Nacional de Fusión)*/

2019-10-31T16:02:41Z

= Macarena Liniers Vázquez (Laboratorio Nacional de Fusión)

← Older revision		Revision as of 18:02, 31 October 2019
Line 6:		Line 6:

	== Name and affiliation of proponent =		== Name and affiliation of proponent =
	~~Paco Tabares, Eider Oyarzabal, David Tafalla~~		Macarena Liniers Vázquez (Laboratorio Nacional de Fusión)
	== Details of contact person at LNF (if applicable) ==		== Details of contact person at LNF (if applicable) ==
	~~Paco Tabares~~		Macarena Liniers
	== Description of the activity, including motivation/objectives and experience of the proponent (typically one-two pages)==		== Description of the activity, including motivation/objectives and experience of the proponent (typically one-two pages)==
	~~Continuation~~ of previous ~~experiments~~: ~~Insertion~~ of Sn, ~~LiSn~~ and Li ~~fingers~~ in ~~CPS support~~		To study the power balance of the injected beams, and their contribution to plasma fuelling, Infrared thermography of the NBI Beam Stop (BS) will be used.
			The IR camera FLIR X6580sc, commissioned during the previous campaign, gave preliminary results on the “shine-trough” and reionization losses through the IR images of the “Beam Stop”. A correlation between reionization losses and local pressure at the beam duct was established.
			The obtained IR images did not fully correspond to the expected behaviour of the BS material, a textured graphite with easy conductivity in the plate plane. The temperatures were higher than expected, and their time traces showed a “saturation” effect. A number of tests were performed to ascertain the thermal character of this behaviour. It was confirmed that the saturation is not a camera detector effect, but a “real” evolution of the IR radiance on the camera.
			In order to perform a correct analysis of the thermal images, it is necessary to study the relative importance of the different effects that contribute to the plate temperature evolution, and to the IR radiance of the plate surface in the camera wave-length range (3.5-5 m). Aside from the heat conduction in the graphite plate bulk upon beam interception:
			-thermal behaviour (conduction) of the layers of Li, B, and their compounds, that are deposited on the BS graphite during Li and B evaporation, and subsequent plasma operation
			-Emissivity changes of the graphite surface with temperature due to the deposited layers
			-Line emission of H0, Li, B, C and their compounds, in the 3.5-5.0 m range

			In order to obtain the beam fraction deposited in the plasma, a well-defined correlation between the beam power intercepted by the BS, and the measured surface temperature must be found.
			The high frame rate of the new camera will allow us to discriminate between fast processes (such as line-emission) and slow processes (thermal conduction), and thereby interpret the observed IR radiation behaviour.
			TJ-II experimental campaign needs:
			-As soon as the beams are ready (mid-May) beam pulses without B are required.
			1. Spectrograms of the IR light (between 0.8-1.5 m ) coming from the BS area are necessary, to study relevant emission lines and determine their correlative lines in the 3.5-5 m range, and their intensity relative to the “background” grey body emission
			2. Visible and UV spectra of light coming from the BS area, to study the species present and their contribution to radiance in the 3.5-5 m range
			3. Capture IR images of the BS with increased frequency to study the Temperature rise and fall and compare with the time scales of the IR emission effects (grey body, line emission)
			4. Perform beam power scans to study the correlation between BS temperature and Beam power
			5. Perform a number of pulses with B to estimate the re-ionization losses
			-Towards the end of the campaign:
			6. Beam pulses on the Beam Calorimeter with the new 12 mm lens

	== If applicable, International or National funding project or entity ==		== If applicable, International or National funding project or entity ==
	~~1P120 MINECO, TF LMD EuroFusion~~		Proyecto Plan Nacional FIS2017-89326-R
	== Description of required resources ==		== Description of required resources ==
	Required resources:		Required resources:
	* Number of plasma discharges or days of operation:		* Number of plasma discharges or days of operation: 2 days of operation + 2 beam pulses to be used for reference in several experiments
	* Essential diagnostic systems:		* Essential diagnostic systems:: IR spectroscopy, VUV spectroscopy plasma density, NPA (tangential), IR Thermography, Fast Ion gauges, Halpha
	* Type of plasmas (heating configuration):		* Type of plasmas (heating configuration):several different densities
	* Specific requirements on wall conditioning if any:		* Specific requirements on wall conditioning if any:reference pulses one day previous to Li, one day next to Li
	* External users: need a local computer account for data access: ~~yes/~~no		* External users: need a local computer account for data access: no
	* Any external equipment to be integrated? Provide description and integration needs:		* Any external equipment to be integrated? Provide description and integration needs:
	~~Biasing Power source ad Control~~
	== Preferred dates and degree of flexibility ==		== Preferred dates and degree of flexibility ==
	10-~~03-2018~~ to ~~05-06-2018~~		One day in Mid-November (one day previous to Li, one day next to Li) and one day at end of campaign

	== References ==		== References ==
	<references /> <!-- DO NOT REMOVE THIS LINE OR YOU WON'T BE ABLE TO INCLUDE REFERENCES -->		<references /> <!-- DO NOT REMOVE THIS LINE OR YOU WON'T BE ABLE TO INCLUDE REFERENCES -->
	~~F L Tabares~~ et al. ~~Experimental tests of LiSn alloys as potential liquid metal~~ for the ~~Divertor target in a Fusion Reactor. Nucl Mat Ene. (2017) in press<hr>~~		-M. Liniers et al., New infrared imaging diagnostic for the Neutral Beam Heating System at the TJ-II stellarator
	~~F L Tabares et al Comparative studies~~ of ~~Li and LiSn…. Phys Scripta 2017~~ (~~in press~~)		Journal of Instrumentation, Volume 14, September 2019
			3rd European Conference on Plasma Diagnostics (ECPD2019)

	[[TJ-II:Experimental proposals\|Back to list of experimental proposals]]		[[TJ-II:Experimental proposals\|Back to list of experimental proposals]]

Macarena.Liniers: /* Experimental campaign = */

2019-10-31T15:40:45Z

Experimental campaign =

← Older revision		Revision as of 17:40, 31 October 2019
Line 1:		Line 1:
	= Experimental campaign ==		= Experimental campaign ==
	~~2018~~ Autumn		2019 Autumn

	== Proposal title ==		== Proposal title ==
	~~Studies~~ of ~~LIquid Metal Insertion in TJ-II~~		Infrared thermography of the NBI Beam Stop: NBI contribution to plasma fuelling

	== Name and affiliation of proponent =		== Name and affiliation of proponent =

Tabares: /* References */

2019-10-30T09:02:03Z

References

← Older revision		Revision as of 11:02, 30 October 2019
Line 32:		Line 32:

	[[Category:TJ-II internal documents]]		[[Category:TJ-II internal documents]]
	[[Category:TJ-II experimental proposals ~~Spring~~ 2018]]		[[Category:TJ-II experimental proposals Autumn 2018]]

	== Name and affiliation of proponent =		== Name and affiliation of proponent =

Tabares: /* Experimental campaign = */

2019-10-30T08:22:59Z

Experimental campaign =

← Older revision		Revision as of 10:22, 30 October 2019
Line 1:		Line 1:
	= Experimental campaign ==		= Experimental campaign ==
	~~2019~~ Autumn		2018 Autumn

	== Proposal title ==		== Proposal title ==

Tabares: /* Experimental campaign = */

2019-10-30T08:06:37Z

Experimental campaign =

← Older revision		Revision as of 10:06, 30 October 2019
Line 3:		Line 3:

	== Proposal title ==		== Proposal title ==
	Studies of LIquid Metal Insertion in TJ-II~~= Experimental campaign ==~~		Studies of LIquid Metal Insertion in TJ-II
	~~2018 Spring~~

	~~== Proposal title ==~~
	~~Studies of LIquid Metal Insertion in TJ-II~~
	== Name and affiliation of proponent =		== Name and affiliation of proponent =
	Paco Tabares, Eider Oyarzabal, David Tafalla		Paco Tabares, Eider Oyarzabal, David Tafalla