TJ-II:Biasing probe - Revision history

Admin at 07:14, 1 May 2024

2024-05-01T07:14:58Z

← Older revision		Revision as of 09:14, 1 May 2024
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	<ref>M.A. Pedrosa et al, ''Transport and fluctuations during electrode biasing experiments on the TJ-II stellarator'', [http://www-pub.iaea.org/MTCD/Meetings/FEC2006/ex_p4-40.pdf Proc. 12<sup>st</sup> Fusion Energy Conf. (2006) EX-P4/40]</ref>		<ref>M.A. Pedrosa et al, ''Transport and fluctuations during electrode biasing experiments on the TJ-II stellarator'', [http://www-pub.iaea.org/MTCD/Meetings/FEC2006/ex_p4-40.pdf Proc. 12<sup>st</sup> Fusion Energy Conf. (2006) EX-P4/40]</ref>
	<ref>Melnikov, A. V., Hidalgo, C., et al. (2004). ''Plasma Potential Measurements by the Heavy Ion Beam Probe Diagnostic in Fusion Plasmas: Biasing Experiments in the TJ-II Stellarator and T-10 Tokamak''. [[doi:10.13182/FST04-A568\|Fusion Science and Technology, 46(2), 299–311]]</ref>		<ref>Melnikov, A. V., Hidalgo, C., et al. (2004). ''Plasma Potential Measurements by the Heavy Ion Beam Probe Diagnostic in Fusion Plasmas: Biasing Experiments in the TJ-II Stellarator and T-10 Tokamak''. [[doi:10.13182/FST04-A568\|Fusion Science and Technology, 46(2), 299–311]]</ref>
			<ref>B. van Milligen, T. Kalhoff, M. Pedrosa, and C. Hidalgo. ''Bicoherence during confinement transitions in the TJ-II stellarator''. [[doi:10.1088/0029-5515/48/11/115003\|Nucl. Fusion, 48:115003, 2008]].</ref>
			<ref>B. van Milligen, M. Pedrosa, C. Hidalgo, B. Carreras, T. Estrada, J. Alonso, J. de Pablos, A. Melnikov, L. Krupnik, L. Eliseev, and S. Perfilov. ''The dynamics of the formation of the edge particle transport barrier at TJ-II''. [[doi:10.1088/0029-5515/51/11/113002\|Nucl. Fusion, 51:113002, 2011]].</ref>
			<ref>B. van Milligen, J. Hernández Nicolau, B. Liu, G. Grenfell, U. Losada, B. Carreras, L. García, and C. Hidalgo. ''Filaments in the edge confinement region of TJ-II''. [[doi:10.1088/1741-4326/aa9db6\|Nucl. Fusion, 58:026030, 2018]].</ref>

	In 2009, the power source (originally DC) has been upgraded to allow modulation with a frequency of up to a few kHz.		In 2009, the power source (originally DC) has been upgraded to allow modulation with a frequency of up to a few kHz.

Admin at 07:06, 1 May 2024

2024-05-01T07:06:10Z

← Older revision		Revision as of 09:06, 1 May 2024
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	<ref>C. Silva et al, ''Transport and fluctuations during electrode biasing on TJ-II'', [[doi:10.1007/s10582-006-0044-3\|Czech. J. Phys. '''55''' (2005) 1589]]</ref>		<ref>C. Silva et al, ''Transport and fluctuations during electrode biasing on TJ-II'', [[doi:10.1007/s10582-006-0044-3\|Czech. J. Phys. '''55''' (2005) 1589]]</ref>
	<ref>M.A. Pedrosa et al, ''Transport and fluctuations during electrode biasing experiments on the TJ-II stellarator'', [http://www-pub.iaea.org/MTCD/Meetings/FEC2006/ex_p4-40.pdf Proc. 12<sup>st</sup> Fusion Energy Conf. (2006) EX-P4/40]</ref>		<ref>M.A. Pedrosa et al, ''Transport and fluctuations during electrode biasing experiments on the TJ-II stellarator'', [http://www-pub.iaea.org/MTCD/Meetings/FEC2006/ex_p4-40.pdf Proc. 12<sup>st</sup> Fusion Energy Conf. (2006) EX-P4/40]</ref>
			<ref>Melnikov, A. V., Hidalgo, C., et al. (2004). ''Plasma Potential Measurements by the Heavy Ion Beam Probe Diagnostic in Fusion Plasmas: Biasing Experiments in the TJ-II Stellarator and T-10 Tokamak''. [[doi:10.13182/FST04-A568\|Fusion Science and Technology, 46(2), 299–311]]</ref>

	In 2009, the power source (originally DC) has been upgraded to allow modulation with a frequency of up to a few kHz.		In 2009, the power source (originally DC) has been upgraded to allow modulation with a frequency of up to a few kHz.

Admin at 17:01, 29 April 2024

2024-04-29T17:01:20Z

← Older revision		Revision as of 19:01, 29 April 2024
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	[[File:TJ-II_Biasing_probe.jpg\|300px\|thumb\|right\|~~Layout~~ of the biasing probe, mounted on the [[TJ-II:Langmuir Probes\|reciprocating probe]] drive]]		[[File:TJ-II_Biasing_probe.jpg\|300px\|thumb\|right\|Conceptual diagram of the biasing probe, mounted on the [[TJ-II:Langmuir Probes\|reciprocating probe]] drive]]
	At [[TJ-II]], a 2-D carbon composite mushroom shaped electrode (12 mm high with a diameter of 25 mm) has been developed and installed on a fast reciprocating probe drive. Typically, the electrode is inserted to a position 2 cm inside the last closed flux surface (LCFS) and biased positively (200-300 V) with respect to one of the two [[TJ-II:Limiter\|TJ-II limiters]] located in the [[Scrape-Off Layer]] region (about 0.5 cm beyond the LCFS). Measured electrode currents are in the range of 30-50 A.		At [[TJ-II]], a 2-D carbon composite mushroom shaped electrode (12 mm high with a diameter of 25 mm) has been developed and installed on a fast reciprocating probe drive. Typically, the electrode is inserted to a position 2 cm inside the last closed flux surface (LCFS) and biased positively (200-300 V) with respect to one of the two [[TJ-II:Limiter\|TJ-II limiters]] located in the [[Scrape-Off Layer]] region (about 0.5 cm beyond the LCFS). Measured electrode currents are in the range of 30-50 A.

Igor voldiner: Fixed sector reference (toroidal angle is correct)

2021-12-01T09:09:23Z

Fixed sector reference (toroidal angle is correct)

← Older revision		Revision as of 11:09, 1 December 2021
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	In 2009, the power source (originally DC) has been upgraded to allow modulation with a frequency of up to a few kHz.		In 2009, the power source (originally DC) has been upgraded to allow modulation with a frequency of up to a few kHz.

	Location: [[TJ-II:Sectors\|sector]] A7 (φ = 174.4 °).		Location: [[TJ-II:Sectors\|sector]] A8 (φ = 174.4 °).
	Signal names in the [[TJ-II:Shot_database\|TJ-II database]]:		Signal names in the [[TJ-II:Shot_database\|TJ-II database]]:
	'PolI', 'PolV'.		'PolI', 'PolV'.

Admin at 13:25, 11 September 2018

2018-09-11T13:25:12Z

← Older revision		Revision as of 15:25, 11 September 2018
Line 8:		Line 8:
	In 2009, the power source (originally DC) has been upgraded to allow modulation with a frequency of up to a few kHz.		In 2009, the power source (originally DC) has been upgraded to allow modulation with a frequency of up to a few kHz.

	Location: [[TJ-II:Sectors\|sector]] A4 (φ = 174.4 °).		Location: [[TJ-II:Sectors\|sector]] A7 (φ = 174.4 °).
	Signal names in the [[TJ-II:Shot_database\|TJ-II database]]:		Signal names in the [[TJ-II:Shot_database\|TJ-II database]]:
	'PolI', 'PolV'.		'PolI', 'PolV'.

Admin at 12:36, 8 May 2018

2018-05-08T12:36:18Z

← Older revision		Revision as of 14:36, 8 May 2018
Line 3:		Line 3:

	The impact of biasing on confinement properties has been studied to some depth.		The impact of biasing on confinement properties has been studied to some depth.
	<ref>C. Hidalgo, M. Pedrosa, L. García, and A. Ware, ''Experimental evidence of coupling between sheared-flow development and an increase in the level of turbulence in the TJ-II stellarator'', [[doi:10.1103/PhysRevE.70.067402\|Phys. Rev. E, '''70''' (2004) 067402]]</ref>
	<ref>C. Silva et al, ''Transport and fluctuations during electrode biasing on TJ-II'', [[doi:10.1007/s10582-006-0044-3\|Czech. J. Phys. '''55''' (2005) 1589]]</ref>		<ref>C. Silva et al, ''Transport and fluctuations during electrode biasing on TJ-II'', [[doi:10.1007/s10582-006-0044-3\|Czech. J. Phys. '''55''' (2005) 1589]]</ref>
	<ref>M.A. Pedrosa et al, ''Transport and fluctuations during electrode biasing experiments on the TJ-II stellarator'', [http://www-pub.iaea.org/MTCD/Meetings/FEC2006/ex_p4-40.pdf Proc. 12<sup>st</sup> Fusion Energy Conf. (2006) EX-P4/40]</ref>		<ref>M.A. Pedrosa et al, ''Transport and fluctuations during electrode biasing experiments on the TJ-II stellarator'', [http://www-pub.iaea.org/MTCD/Meetings/FEC2006/ex_p4-40.pdf Proc. 12<sup>st</sup> Fusion Energy Conf. (2006) EX-P4/40]</ref>

Admin at 12:34, 8 May 2018

2018-05-08T12:34:36Z

← Older revision		Revision as of 14:34, 8 May 2018
Line 1:		Line 1:
	[[File:TJ-II_Biasing_probe.jpg\|300px\|thumb\|right\|Layout of the biasing probe, mounted on the [[TJ-II:Langmuir Probes\|reciprocating probe]] drive]]		[[File:TJ-II_Biasing_probe.jpg\|300px\|thumb\|right\|Layout of the biasing probe, mounted on the [[TJ-II:Langmuir Probes\|reciprocating probe]] drive]]
	At [[TJ-II]], a 2-D carbon composite mushroom shaped electrode (12 mm high with a diameter of 25 mm) has been developed and installed on a fast reciprocating probe drive. Typically, the electrode is inserted to a position 2 cm inside the last closed flux surface (LCFS) and biased positively (200-300 V) with respect to one of the two [[TJ-II:Limiter\|TJ-II limiters]] located in the [[Scrape-Off Layer]] region (about 0.5 cm beyond the LCFS). Measured electrode currents are in the range of 30-50 A.		At [[TJ-II]], a 2-D carbon composite mushroom shaped electrode (12 mm high with a diameter of 25 mm) has been developed and installed on a fast reciprocating probe drive. Typically, the electrode is inserted to a position 2 cm inside the last closed flux surface (LCFS) and biased positively (200-300 V) with respect to one of the two [[TJ-II:Limiter\|TJ-II limiters]] located in the [[Scrape-Off Layer]] region (about 0.5 cm beyond the LCFS). Measured electrode currents are in the range of 30-50 A.
	<ref>[~~http~~:/~~/dx~~.~~doi~~.~~org/10~~.~~1007~~/~~s10582-006-0044-3~~ C. Silva et al, ''Transport and fluctuations during electrode biasing on TJ-II'', Czech. J. Phys. '''55''' (2005) 1589]</ref>
	<ref>~~[http://www-pub.iaea.org/MTCD/Meetings/FEC2006/ex_p4-40.pdf~~ M.A. Pedrosa et al, ''Transport and fluctuations during electrode biasing experiments on the TJ-II stellarator'', Proc. 12<sup>st</sup> Fusion Energy Conf. (2006) EX-P4/40]</ref>		The impact of biasing on confinement properties has been studied to some depth.
			<ref>C. Hidalgo, M. Pedrosa, L. García, and A. Ware, ''Experimental evidence of coupling between sheared-flow development and an increase in the level of turbulence in the TJ-II stellarator'', [[doi:10.1103/PhysRevE.70.067402\|Phys. Rev. E, '''70''' (2004) 067402]]</ref>
			<ref>C. Silva et al, ''Transport and fluctuations during electrode biasing on TJ-II'', [[doi:10.1007/s10582-006-0044-3\|Czech. J. Phys. '''55''' (2005) 1589]]</ref>
			<ref>M.A. Pedrosa et al, ''Transport and fluctuations during electrode biasing experiments on the TJ-II stellarator'', [http://www-pub.iaea.org/MTCD/Meetings/FEC2006/ex_p4-40.pdf Proc. 12<sup>st</sup> Fusion Energy Conf. (2006) EX-P4/40]</ref>

	In 2009, the power source (originally DC) has been upgraded to allow modulation with a frequency of up to a few kHz.		In 2009, the power source (originally DC) has been upgraded to allow modulation with a frequency of up to a few kHz.

Admin at 14:43, 31 October 2017

2017-10-31T14:43:54Z

← Older revision		Revision as of 16:43, 31 October 2017
Line 6:		Line 6:
	In 2009, the power source (originally DC) has been upgraded to allow modulation with a frequency of up to a few kHz.		In 2009, the power source (originally DC) has been upgraded to allow modulation with a frequency of up to a few kHz.

	Location: [[TJ-II:Sectors\|sector]] A4.		Location: [[TJ-II:Sectors\|sector]] A4 (φ = 174.4 °).
	Signal names in the [[TJ-II:Shot_database\|TJ-II database]]:		Signal names in the [[TJ-II:Shot_database\|TJ-II database]]:
	'PolI', 'PolV'.		'PolI', 'PolV'.

Admin: Reverted edits by 211.46.97.1 (Talk) to last revision by Admin

2011-07-16T09:56:00Z

Reverted edits by 211.46.97.1 (Talk) to last revision by Admin

← Older revision		Revision as of 11:56, 16 July 2011
Line 1:		Line 1:
	~~Kewl you should come~~ up ~~with that~~. ~~Excllenet!~~		[[File:TJ-II_Biasing_probe.jpg\|300px\|thumb\|right\|Layout of the biasing probe, mounted on the [[TJ-II:Langmuir Probes\|reciprocating probe]] drive]]
			At [[TJ-II]], a 2-D carbon composite mushroom shaped electrode (12 mm high with a diameter of 25 mm) has been developed and installed on a fast reciprocating probe drive. Typically, the electrode is inserted to a position 2 cm inside the last closed flux surface (LCFS) and biased positively (200-300 V) with respect to one of the two [[TJ-II:Limiter\|TJ-II limiters]] located in the [[Scrape-Off Layer]] region (about 0.5 cm beyond the LCFS). Measured electrode currents are in the range of 30-50 A.
			<ref>[http://dx.doi.org/10.1007/s10582-006-0044-3 C. Silva et al, ''Transport and fluctuations during electrode biasing on TJ-II'', Czech. J. Phys. '''55''' (2005) 1589]</ref>
			<ref>[http://www-pub.iaea.org/MTCD/Meetings/FEC2006/ex_p4-40.pdf M.A. Pedrosa et al, ''Transport and fluctuations during electrode biasing experiments on the TJ-II stellarator'', Proc. 12<sup>st</sup> Fusion Energy Conf. (2006) EX-P4/40]</ref>

			In 2009, the power source (originally DC) has been upgraded to allow modulation with a frequency of up to a few kHz.

			Location: [[TJ-II:Sectors\|sector]] A4.
			Signal names in the [[TJ-II:Shot_database\|TJ-II database]]:
			'PolI', 'PolV'.

			[[File:Polarisation_probe.jpg\|500px\|thumb\|left\|Photo of the reciprocating drive of the biasing probe (top right)]]

			== References ==
			<references />

211.46.97.1: gmEhNnkEtanjFQ

2011-07-16T01:28:20Z

gmEhNnkEtanjFQ

← Older revision		Revision as of 03:28, 16 July 2011
Line 1:		Line 1:
	~~[[File:TJ-II_Biasing_probe.jpg\|300px\|thumb\|right\|Layout of the biasing probe, mounted on the [[TJ-II:Langmuir Probes\|reciprocating probe]] drive]]~~		Kewl you should come up with that. Excllenet!
	At [[TJ-II]], a 2-D carbon composite mushroom shaped electrode (12 mm high with a diameter of 25 mm) has been developed and installed on a fast reciprocating probe drive. Typically, the electrode is inserted to a position 2 cm inside the last closed flux surface (LCFS) and biased positively (200-300 V) with respect to one of the two [[TJ-II:Limiter\|TJ-II limiters]] located in the [[Scrape-Off Layer]] region (about 0.5 cm beyond the LCFS). Measured electrode currents are in the range of 30-50 A.
	~~<ref>[http://dx.doi.org/10.1007/s10582-006-0044-3 C. Silva et al, ''Transport and fluctuations during electrode biasing on TJ-II'', Czech. J. Phys. '''55''' (2005) 1589]</ref>~~
	<ref>[http://www-pub.iaea.org/MTCD/Meetings/FEC2006/ex_p4-40.pdf M.A. Pedrosa et al, ''Transport and fluctuations during electrode biasing experiments on the TJ-II stellarator'', Proc. 12<sup>st</sup> Fusion Energy Conf. (2006) EX-P4/40]</ref>

	~~In 2009, the power source (originally DC) has been upgraded to allow modulation~~ with ~~a frequency of up to a few kHz.~~

	~~Location: [[TJ-II:Sectors\|sector]] A4.~~
	~~Signal names in the [[TJ-II:Shot_database\|TJ-II database]]:~~
	~~'PolI', 'PolV'.~~

	~~[[File:Polarisation_probe~~.~~jpg\|500px\|thumb\|left\|Photo of the reciprocating drive of the biasing probe (top right)]]~~

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