Resonant Magnetic Perturbation - Revision history

Admin: moved RMP to Resonant Magnetic Perturbation

2012-07-25T05:00:27Z

moved RMP to Resonant Magnetic Perturbation

← Older revision	Revision as of 07:00, 25 July 2012
(No difference)

Admin at 18:44, 10 December 2011

2011-12-10T18:44:34Z

← Older revision		Revision as of 20:44, 10 December 2011
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	usually located in the plasma edge region.		usually located in the plasma edge region.
	Resonance means that the perturbation has the same [[Rotational transform\|helicity]] as the equilibrium magnetic field at the target flux surface.		Resonance means that the perturbation has the same [[Rotational transform\|helicity]] as the equilibrium magnetic field at the target flux surface.
	The perturbation ~~typically leads~~ to the ergodization of the magnetic field around the resonant flux surface.		The perturbation is assumed to lead to the ergodization of the magnetic field around the resonant flux surface.

	The goal is to stabilize a specific instability, mainly [[Edge Localized Modes]].		The goal is to stabilize a specific instability, mainly [[Edge Localized Modes]] (ELMs), in order to reduce the deleterious effects of the corresponding transport bursts on the wall of the device.
	~~<ref>[[doi:10.1103/PhysRevLett.95.035003\|T.E. Evans, et al, ''Reduced Heat Transport between Edge-Localized-Mode Bursts at Low Collisionality and Small Poloidal Larmor Radius''~~, ~~Phys, Rev~~. ~~Lett. '''92''' (2004) 35003]]</ref>~~
	<ref>[[doi:10.1038/nphys312\|T.E. Evans, et al, ''Edge stability and transport control with resonant magnetic perturbations in collisionless tokamak plasmas'', Nature Physics '''2''' (2006) 419 - 423]]</ref>		<ref>[[doi:10.1038/nphys312\|T.E. Evans, et al, ''Edge stability and transport control with resonant magnetic perturbations in collisionless tokamak plasmas'', Nature Physics '''2''' (2006) 419 - 423]]</ref>
			Resonance of the externally imposed field with the field line pitch is assumed to be essential for the generation of a stochastic zone and the desired mitigating effect on the instability.
			<ref>[[doi:10.1103/PhysRevLett.103.165005\|O. Schmitz, T.E. Evans, M.E. Fenstermacher, et al, ''Resonant Pedestal Pressure Reduction Induced by a Thermal Transport Enhancement due to Stochastic Magnetic Boundary Layers in High Temperature Plasmas'', Phys. Rev. Lett. '''103''' (2009) 165005]]</ref>
			However, recent results indicate that resonance is not strictly necessary to obtain a mitigating effect on ELMs from external field perturbations.
			<ref>[[doi:10.1103/PhysRevLett.106.225004\|W. Suttrop, T. Eich, J.C. Fuchs, et al, ''First Observation of Edge Localized Modes Mitigation with Resonant and Nonresonant Magnetic Perturbations in ASDEX Upgrade'', Phys. Rev. Lett. '''106''' (2011) 225004]]</ref>

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

Admin at 13:19, 30 November 2011

2011-11-30T13:19:23Z

← Older revision		Revision as of 15:19, 30 November 2011
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	The goal is to stabilize a specific instability, mainly [[Edge Localized Modes]].		The goal is to stabilize a specific instability, mainly [[Edge Localized Modes]].
	<ref>[[doi:10.1103/PhysRevLett.95.035003\|T.E. Evans, et al, ''Reduced Heat Transport between Edge-Localized-Mode Bursts at Low Collisionality and Small Poloidal Larmor Radius'', Phys, Rev. Lett. '''92''' (2004) 35003]]</ref>		<ref>[[doi:10.1103/PhysRevLett.95.035003\|T.E. Evans, et al, ''Reduced Heat Transport between Edge-Localized-Mode Bursts at Low Collisionality and Small Poloidal Larmor Radius'', Phys, Rev. Lett. '''92''' (2004) 35003]]</ref>
			<ref>[[doi:10.1038/nphys312\|T.E. Evans, et al, ''Edge stability and transport control with resonant magnetic perturbations in collisionless tokamak plasmas'', Nature Physics '''2''' (2006) 419 - 423]]</ref>

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

Admin at 13:15, 30 November 2011

2011-11-30T13:15:28Z

← Older revision		Revision as of 15:15, 30 November 2011
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	usually located in the plasma edge region.		usually located in the plasma edge region.
	Resonance means that the perturbation has the same [[Rotational transform\|helicity]] as the equilibrium magnetic field at the target flux surface.		Resonance means that the perturbation has the same [[Rotational transform\|helicity]] as the equilibrium magnetic field at the target flux surface.
	The perturbation typically leads to the ergodization of the ~~magentic~~ field around the resonant flux surface.		The perturbation typically leads to the ergodization of the magnetic field around the resonant flux surface.

	The goal is to stabilize a specific instability, mainly [[Edge Localized Modes]].		The goal is to stabilize a specific instability, mainly [[Edge Localized Modes]].

Admin at 13:14, 30 November 2011

2011-11-30T13:14:52Z

@@ Line 1: / Line 1: @@
 A Resonant Magnetic Perturbation (RMP) is an externally-induced small perturbation of the [[MHD equilibrium|equilibrium]] magnetic field,
-that is resonant with it, i.e. it has the same helicity as the equilibrium magnetic field, on a given magnetic [[flux surface]],
+such that it is resonant with the field at a given magnetic [[flux surface]],
-usually designed to be located in the plasma edge region.
+usually located in the plasma edge region.

Admin at 07:57, 28 November 2011

2011-11-28T07:57:10Z

← Older revision		Revision as of 09:57, 28 November 2011
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	~~RMP (Resonant Magnetic Perturbations)~~		A Resonant Magnetic Perturbation (RMP) is an externally-induced small perturbation of the [[MHD equilibrium\|equilibrium]] magnetic field,
			that is resonant with it, i.e. it has the same helicity as the equilibrium magnetic field, on a given magnetic [[flux surface]],
	~~----~~
	~~Definition~~
	~~----~~

	A Resonant Magnetic Perturbation (RMP) is an externally-induced small perturbation of the equilibrium magnetic field,
	that is resonant with it, i.e. it has the same helicity as the equilibrium magnetic field, on a given magnetic flux surface,
	usually designed to be located in the plasma edge region.		usually designed to be located in the plasma edge region.

Armada at 02:16, 28 November 2011

2011-11-28T02:16:35Z

← Older revision		Revision as of 04:16, 28 November 2011
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	RMP (Resonant Magnetic Perturbations)		RMP (Resonant Magnetic Perturbations)

	$Definition$		----
			Definition
			----

	A Resonant Magnetic Perturbation (RMP) is an externally-induced small perturbation of the equilibrium magnetic field,		A Resonant Magnetic Perturbation (RMP) is an externally-induced small perturbation of the equilibrium magnetic field,
	that is resonant with it, i.e. it has the same helicity as the equilibrium magnetic field, on a given magnetic flux surface,		that is resonant with it, i.e. it has the same helicity as the equilibrium magnetic field, on a given magnetic flux surface,
	usually designed to be located in the plasma edge region.		usually designed to be located in the plasma edge region.

Armada at 02:15, 28 November 2011

2011-11-28T02:15:41Z

← Older revision		Revision as of 04:15, 28 November 2011
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	RMP (Resonant Magnetic Perturbations)		RMP (Resonant Magnetic Perturbations)

	Definition		$Definition$
	A Resonant Magnetic Perturbation (RMP) is an externally-induced small perturbation of the equilibrium magnetic field,		A Resonant Magnetic Perturbation (RMP) is an externally-induced small perturbation of the equilibrium magnetic field,
	that is resonant with it, i.e. it has the same helicity as the equilibrium magnetic field, on a given magnetic flux surface,		that is resonant with it, i.e. it has the same helicity as the equilibrium magnetic field, on a given magnetic flux surface,
	usually designed to be located in the plasma edge region.		usually designed to be located in the plasma edge region.

Armada at 02:15, 28 November 2011

2011-11-28T02:15:07Z

← Older revision		Revision as of 04:15, 28 November 2011
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	~~{ <b>~~ RMP (Resonant Magnetic Perturbations) }		RMP (Resonant Magnetic Perturbations)

	~~<section>~~ Definition		Definition
	Resonant Magnetic ~~Perturbations are~~ externally-induced small ~~perturbations~~ of the equilibrium magnetic field,		A Resonant Magnetic Perturbation (RMP) is an externally-induced small perturbation of the equilibrium magnetic field,
	that ~~are~~ resonant with it, i.e. ~~they have~~ the same helicity as the equilibrium magnetic field, on a given magnetic flux surface.		that is resonant with it, i.e. it has the same helicity as the equilibrium magnetic field, on a given magnetic flux surface,
			usually designed to be located in the plasma edge region.

Armada at 02:12, 28 November 2011

2011-11-28T02:12:50Z

← Older revision		Revision as of 04:12, 28 November 2011
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	RMP (Resonant Magnetic Perturbations) ~~<b>~~		{ <b> RMP (Resonant Magnetic Perturbations) }
	~~<h><h>~~
	<section> Definition		<section> Definition
	Resonant Magnetic Perturbations are externally-induced small perturbations of the equilibrium magnetic field,		Resonant Magnetic Perturbations are externally-induced small perturbations of the equilibrium magnetic field,
	that are resonant with it, i.e. they have the same helicity as the equilibrium magnetic field, on a given magnetic flux surface.		that are resonant with it, i.e. they have the same helicity as the equilibrium magnetic field, on a given magnetic flux surface.