Quiescent H-mode - Revision history

Admin at 11:54, 28 July 2012

2012-07-28T11:54:22Z

← Older revision		Revision as of 13:54, 28 July 2012
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	A Quiescent H-mode is an [[H-mode]] without [[Edge Localized Modes\|ELM]] activity.		A Quiescent H-mode is an [[H-mode]] without [[Edge Localized Modes\|ELM]] activity.
	The QH-mode was discovered at DIII-D, ~~but was subsequently seen at JT-60U, ASDEX-U and JET.~~		The QH-mode was discovered at DIII-D,
	~~QH plasmas have an Edge Harmonic Oscillation (EHO) but remain below the peeling stability boundary associated with ELMs.~~
	<ref>[[doi:10.1088/0741-3335/44/5A/325\|K.H. Burrell, M.E. Austin, D.P. Brennan, et al., ''Quiescent H-mode plasmas in the DIII-D tokamak'', Plasma Phys. Control. Fusion '''44''' (2002) A253]]</ref>		<ref>[[doi:10.1088/0741-3335/44/5A/325\|K.H. Burrell, M.E. Austin, D.P. Brennan, et al., ''Quiescent H-mode plasmas in the DIII-D tokamak'', Plasma Phys. Control. Fusion '''44''' (2002) A253]]</ref>
	<ref>[[doi:10.1103/PhysRevLett.102.155003\|K.H. Burrell, T.H. Osborne, P.B. Snyder, et al., ''Quiescent H-Mode Plasmas with Strong Edge Rotation in the Cocurrent Direction'', Phys. Rev. Lett. '''102''' (2009) 155003]]</ref>		<ref>[[doi:10.1103/PhysRevLett.102.155003\|K.H. Burrell, T.H. Osborne, P.B. Snyder, et al., ''Quiescent H-Mode Plasmas with Strong Edge Rotation in the Cocurrent Direction'', Phys. Rev. Lett. '''102''' (2009) 155003]]</ref>
			but was subsequently seen at JT-60U, ASDEX-U
			<ref>[[doi:10.1088/0741-3335/46/5A/016\|W. Suttrop, G.D. Conway, L. Fattorini, et al., ''Study of quiescent H-mode plasmas in ASDEX Upgrade'', Plasma Phys. Control. Fusion '''46''' (2004) A151]]</ref>
			and JET.
			QH plasmas have a characteristic Edge Harmonic Oscillation (EHO) but remain below the peeling stability boundary associated with ELMs.

	The absence of ELMs is positive for plasma operation as it reduces pulsed stresses on and damage to plasma facing components (mainly the [[divertor]]),		The absence of ELMs is positive for plasma operation as it reduces pulsed stresses on and damage to plasma facing components (mainly the [[divertor]]),

Admin at 11:32, 28 July 2012

2012-07-28T11:32:52Z

← Older revision		Revision as of 13:32, 28 July 2012
Line 1:		Line 1:
	A Quiescent H-mode is an [[H-mode]] without [[Edge Localized Modes\|ELM]] activity.		A Quiescent H-mode is an [[H-mode]] without [[Edge Localized Modes\|ELM]] activity.
			The QH-mode was discovered at DIII-D, but was subsequently seen at JT-60U, ASDEX-U and JET.
			QH plasmas have an Edge Harmonic Oscillation (EHO) but remain below the peeling stability boundary associated with ELMs.
	<ref>[[doi:10.1088/0741-3335/44/5A/325\|K.H. Burrell, M.E. Austin, D.P. Brennan, et al., ''Quiescent H-mode plasmas in the DIII-D tokamak'', Plasma Phys. Control. Fusion '''44''' (2002) A253]]</ref>		<ref>[[doi:10.1088/0741-3335/44/5A/325\|K.H. Burrell, M.E. Austin, D.P. Brennan, et al., ''Quiescent H-mode plasmas in the DIII-D tokamak'', Plasma Phys. Control. Fusion '''44''' (2002) A253]]</ref>
	<ref>[[doi:10.1103/PhysRevLett.102.155003\|K.H. Burrell, T.H. Osborne, P.B. Snyder, et al., ''Quiescent H-Mode Plasmas with Strong Edge Rotation in the Cocurrent Direction'', Phys. Rev. Lett. '''102''' (2009) 155003]]</ref>		<ref>[[doi:10.1103/PhysRevLett.102.155003\|K.H. Burrell, T.H. Osborne, P.B. Snyder, et al., ''Quiescent H-Mode Plasmas with Strong Edge Rotation in the Cocurrent Direction'', Phys. Rev. Lett. '''102''' (2009) 155003]]</ref>
	The absence of ELMs is positive as it reduces stresses on and damage to plasma facing components (mainly the [[divertor]]),
			The absence of ELMs is positive for plasma operation as it reduces pulsed stresses on and damage to plasma facing components (mainly the [[divertor]]),
	but inconvenient from the point of view of impurity accumulation.		but inconvenient from the point of view of impurity accumulation.

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

Admin at 06:29, 28 July 2012

2012-07-28T06:29:11Z

← Older revision		Revision as of 08:29, 28 July 2012
Line 1:		Line 1:
	A Quiescent H-mode is an [[H-mode]] without [[Edge Localized Modes\|ELM]] activity.		A Quiescent H-mode is an [[H-mode]] without [[Edge Localized Modes\|ELM]] activity.
	<ref>[[doi:10.1088/0741-3335/44/5A/325\|K.H. Burrell, M.E. Austin, D.P. Brennan, et al., ''Quiescent H-mode plasmas in the DIII-D tokamak'', Plasma Phys. Control. Fusion '''44''' (2002) A253]]</ref>		<ref>[[doi:10.1088/0741-3335/44/5A/325\|K.H. Burrell, M.E. Austin, D.P. Brennan, et al., ''Quiescent H-mode plasmas in the DIII-D tokamak'', Plasma Phys. Control. Fusion '''44''' (2002) A253]]</ref>
	The absence of ELMs is positive ~~in reducing~~ stresses on and damage to plasma facing components (mainly the [[divertor]]),		<ref>[[doi:10.1103/PhysRevLett.102.155003\|K.H. Burrell, T.H. Osborne, P.B. Snyder, et al., ''Quiescent H-Mode Plasmas with Strong Edge Rotation in the Cocurrent Direction'', Phys. Rev. Lett. '''102''' (2009) 155003]]</ref>
			The absence of ELMs is positive as it reduces stresses on and damage to plasma facing components (mainly the [[divertor]]),
	but inconvenient from the point of view of impurity accumulation.		but inconvenient from the point of view of impurity accumulation.

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

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A Quiescent H-mode is an [[H-mode]] without [[Edge Localized Modes|ELM]] activity.
<ref>[[doi:10.1088/0741-3335/44/5A/325|K.H. Burrell, M.E. Austin, D.P. Brennan, et al., ''Quiescent H-mode plasmas in the DIII-D tokamak'', Plasma Phys. Control. Fusion '''44''' (2002) A253]]</ref>
The absence of ELMs is positive in reducing stresses on and damage to plasma facing components (mainly the [[divertor]]),
but inconvenient from the point of view of impurity accumulation.

== References ==
<references />