TJ-II:Helium Beam - Revision history

Admin: Updated reference links

2018-04-03T16:11:03Z

Updated reference links

← Older revision		Revision as of 18:11, 3 April 2018
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	(Hamamatsu, model R5900U-20-L16) with interference filters		(Hamamatsu, model R5900U-20-L16) with interference filters
	(FWHM = 1 nm).		(FWHM = 1 nm).
	<ref>~~[http://link.aip.org/link/?RSINAK/72/602/1~~ B. Brañas et al., ''Atomic beam diagnostics for characterization of edge plasma in TJ-II stellarator'', Rev. Sci. Instrum. '''72''', 602 (2001)]</ref>		<ref>B. Brañas et al., ''Atomic beam diagnostics for characterization of edge plasma in TJ-II stellarator'', [[doi:10.1063/1.1319868\|Rev. Sci. Instrum. '''72''', 602 (2001)]]</ref>
	A Collisional Radiative (CR) model for the line emission intensity ratios is used		A Collisional Radiative (CR) model for the line emission intensity ratios is used
	to deduce electron densities and temperatures.		to deduce electron densities and temperatures.
	<ref name="Hidalgo">~~[http://link.aip.org/link/?RSINAK/75/3478/1~~ A. Hidalgo et al., ''Multipulse supersonic helium beam diagnostic in the TJ-II stellarator'', Rev. Sci Instrum. '''75''', 3478 (2004)]</ref>		<ref name="Hidalgo">A. Hidalgo et al., ''Multipulse supersonic helium beam diagnostic in the TJ-II stellarator'', [[doi:10.1063/1.1779617\|Rev. Sci Instrum. '''75''', 3478 (2004)]]</ref>
	<ref name="Guzman">~~[http://dx.doi.org/10.1016/j.jnucmat.2009.01.290~~ F. Guzmán et al, ''On the determination of edge Ti profiles by a supersonic He beam in TJ-II'', Journal of Nuclear Materials '''390-391''' (2009) 1127-1130]</ref>		<ref name="Guzman">F. Guzmán et al, ''On the determination of edge Ti profiles by a supersonic He beam in TJ-II'', [[doi:10.1016/j.jnucmat.2009.01.290\|Journal of Nuclear Materials '''390-391''' (2009) 1127-1130]]</ref>
	It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.		It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.

Admin at 17:12, 30 August 2010

2010-08-30T17:12:04Z

← Older revision		Revision as of 19:12, 30 August 2010
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	The Helium beam pulse shape is stored in the [[TJ-II:Shot database\|TJ-II database]] with the name 'HELIO_HAZ'.		The Helium beam pulse shape is stored in the [[TJ-II:Shot database\|TJ-II database]] with the name 'HELIO_HAZ'.
	The detected line emission signals are stored with the names 'He_xxx_yy', where 'xxx' is the wavelength in nm (667, 706, or 728), while 'yy' is the position (from 01 through 16).		The detected line emission signals are stored with the names 'He_xxx_yy', where 'xxx' is the wavelength in nm (667, 706, or 728), while 'yy' is the position (from 01 through 16).
	[[File:TJ-II He beam.jpg\|400px\|thumb\|left\|Photo of He beam ~~diagnostic~~ (top ~~port~~)]]		[[File:TJ-II He beam.jpg\|400px\|thumb\|left\|Photo of Helium and [[TJ-II:Lithium Beam\|Lithium]] beam diagnostics (top ports)]]

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

Admin at 09:20, 29 August 2010

2010-08-29T09:20:01Z

← Older revision		Revision as of 11:20, 29 August 2010
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	A Collisional Radiative (CR) model for the line emission intensity ratios is used		A Collisional Radiative (CR) model for the line emission intensity ratios is used
	to deduce electron densities and temperatures.		to deduce electron densities and temperatures.
	<ref>[http://link.aip.org/link/?RSINAK/75/3478/1 A. Hidalgo et al., ''Multipulse supersonic helium beam diagnostic in the TJ-II stellarator'', Rev. Sci Instrum. '''75''', 3478 (2004)]</ref>		<ref name="Hidalgo">[http://link.aip.org/link/?RSINAK/75/3478/1 A. Hidalgo et al., ''Multipulse supersonic helium beam diagnostic in the TJ-II stellarator'', Rev. Sci Instrum. '''75''', 3478 (2004)]</ref>
	<ref name="Guzman">[http://dx.doi.org/10.1016/j.jnucmat.2009.01.290 F. Guzmán et al, ''On the determination of edge Ti profiles by a supersonic He beam in TJ-II'', Journal of Nuclear Materials '''390-391''' (2009) 1127-1130]</ref>		<ref name="Guzman">[http://dx.doi.org/10.1016/j.jnucmat.2009.01.290 F. Guzmán et al, ''On the determination of edge Ti profiles by a supersonic He beam in TJ-II'', Journal of Nuclear Materials '''390-391''' (2009) 1127-1130]</ref>
	It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.		It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.
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	It is located at φ = 355.3° ([[TJ-II:Sectors\|sector]] C8).		It is located at φ = 355.3° ([[TJ-II:Sectors\|sector]] C8).

	[[File:TJ-II_Helium_beam.png\|300px\|thumb\|right\|The TJ-II Helium beam diagnostic. The laser can be crossed with the Helium beam for LiF measurements of the excited He population <ref name="~~Guzman~~" /> and validation of the CR model.]]		[[File:TJ-II_Helium_beam.png\|300px\|thumb\|right\|The TJ-II Helium beam diagnostic. The laser can be crossed with the Helium beam for LiF measurements of the excited He population <ref name="Hidalgo" /> and validation of the CR model.]]

	== Data description ==		== Data description ==

Admin at 09:17, 29 August 2010

2010-08-29T09:17:19Z

← Older revision		Revision as of 11:17, 29 August 2010
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	~~[[File:TJ-II_Helium_beam.png\|300px\|thumb\|right\|The TJ-II Helium beam diagnostic]]~~		[[TJ-II]] possesses a supersonic Helium beam diagnostic.
			The beam source consists of a fast-pulsed piezoelectric valve with a nozzle of
	[[TJ-II]] possesses a supersonic Helium beam diagnostic ~~based on~~ the ~~line ratio method~~.		0.3 mm diameter and a parabolic profile skimmer with a diameter
			of 0.5 mm.
			The mean beam velocity is 1500 m/s.
			The density of He atoms at the measurement region is estimated to be of
			the order of < 10<sup>11</sup> cm<sup>-3</sup>.
			Three He emission lines (667.2, 706.5 and
			728.1 nm) are simultaneously detected by means of a beam-splitter system and a set of three 16-channel photomultiplier arrays
			(Hamamatsu, model R5900U-20-L16) with interference filters
			(FWHM = 1 nm).
	<ref>[http://link.aip.org/link/?RSINAK/72/602/1 B. Brañas et al., ''Atomic beam diagnostics for characterization of edge plasma in TJ-II stellarator'', Rev. Sci. Instrum. '''72''', 602 (2001)]</ref>		<ref>[http://link.aip.org/link/?RSINAK/72/602/1 B. Brañas et al., ''Atomic beam diagnostics for characterization of edge plasma in TJ-II stellarator'', Rev. Sci. Instrum. '''72''', 602 (2001)]</ref>
			A Collisional Radiative (CR) model for the line emission intensity ratios is used
			to deduce electron densities and temperatures.
	<ref>[http://link.aip.org/link/?RSINAK/75/3478/1 A. Hidalgo et al., ''Multipulse supersonic helium beam diagnostic in the TJ-II stellarator'', Rev. Sci Instrum. '''75''', 3478 (2004)]</ref>		<ref>[http://link.aip.org/link/?RSINAK/75/3478/1 A. Hidalgo et al., ''Multipulse supersonic helium beam diagnostic in the TJ-II stellarator'', Rev. Sci Instrum. '''75''', 3478 (2004)]</ref>
	<ref>[http://dx.doi.org/10.1016/j.jnucmat.2009.01.290 F. Guzmán et al, ''On the determination of edge Ti profiles by a supersonic He beam in TJ-II'', Journal of Nuclear Materials '''390-391''' (2009) 1127-1130]</ref>		<ref name="Guzman">[http://dx.doi.org/10.1016/j.jnucmat.2009.01.290 F. Guzmán et al, ''On the determination of edge Ti profiles by a supersonic He beam in TJ-II'', Journal of Nuclear Materials '''390-391''' (2009) 1127-1130]</ref>
	It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.		It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.

	It is located at φ = 355.3° ([[TJ-II:Sectors\|sector]] C8).		It is located at φ = 355.3° ([[TJ-II:Sectors\|sector]] C8).

			[[File:TJ-II_Helium_beam.png\|300px\|thumb\|right\|The TJ-II Helium beam diagnostic. The laser can be crossed with the Helium beam for LiF measurements of the excited He population <ref name="Guzman" /> and validation of the CR model.]]

	== Data description ==		== Data description ==

Admin at 08:51, 20 August 2010

2010-08-20T08:51:08Z

← Older revision		Revision as of 10:51, 20 August 2010
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	It is located at φ = 355.3° ([[TJ-II:Sectors\|sector]] C8).		It is located at φ = 355.3° ([[TJ-II:Sectors\|sector]] C8).
	The ~~signals are~~ stored in the [[TJ-II:Shot database\|TJ-II database]] with the names 'He_xxx_yy', where 'xxx' is the wavelength in nm (667, 706, or 728), while 'yy' is the position (from 01 through 16).
			== Data description ==
			The Helium beam pulse shape is stored in the [[TJ-II:Shot database\|TJ-II database]] with the name 'HELIO_HAZ'.
			The detected line emission signals are stored with the names 'He_xxx_yy', where 'xxx' is the wavelength in nm (667, 706, or 728), while 'yy' is the position (from 01 through 16).
	[[File:TJ-II He beam.jpg\|400px\|thumb\|left\|Photo of He beam diagnostic (top port)]]		[[File:TJ-II He beam.jpg\|400px\|thumb\|left\|Photo of He beam diagnostic (top port)]]

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

Admin at 17:18, 3 November 2009

2009-11-03T17:18:30Z

← Older revision		Revision as of 19:18, 3 November 2009
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	It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.		It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.

	It is located at φ = 85.3º ([[TJ-II:Sectors\|sector]] A8).		It is located at φ = 355.3° ([[TJ-II:Sectors\|sector]] C8).
	The signals are stored in the [[TJ-II:Shot database\|TJ-II database]] with the names 'He_xxx_yy', where 'xxx' is the wavelength in nm (667, 706, or 728), while 'yy' is the position (from 01 through 16).		The signals are stored in the [[TJ-II:Shot database\|TJ-II database]] with the names 'He_xxx_yy', where 'xxx' is the wavelength in nm (667, 706, or 728), while 'yy' is the position (from 01 through 16).
	[[File:TJ-II He beam.jpg\|400px\|thumb\|left\|Photo of He beam diagnostic (top port)]]		[[File:TJ-II He beam.jpg\|400px\|thumb\|left\|Photo of He beam diagnostic (top port)]]

Admin at 11:15, 2 November 2009

2009-11-02T11:15:43Z

← Older revision		Revision as of 13:15, 2 November 2009
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	<ref>[http://link.aip.org/link/?RSINAK/75/3478/1 A. Hidalgo et al., ''Multipulse supersonic helium beam diagnostic in the TJ-II stellarator'', Rev. Sci Instrum. '''75''', 3478 (2004)]</ref>		<ref>[http://link.aip.org/link/?RSINAK/75/3478/1 A. Hidalgo et al., ''Multipulse supersonic helium beam diagnostic in the TJ-II stellarator'', Rev. Sci Instrum. '''75''', 3478 (2004)]</ref>
	<ref>[http://dx.doi.org/10.1016/j.jnucmat.2009.01.290 F. Guzmán et al, ''On the determination of edge Ti profiles by a supersonic He beam in TJ-II'', Journal of Nuclear Materials '''390-391''' (2009) 1127-1130]</ref>		<ref>[http://dx.doi.org/10.1016/j.jnucmat.2009.01.290 F. Guzmán et al, ''On the determination of edge Ti profiles by a supersonic He beam in TJ-II'', Journal of Nuclear Materials '''390-391''' (2009) 1127-1130]</ref>
			It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.

	It is located at φ = 85.3º ([[TJ-II:Sectors\|sector]] A8).		It is located at φ = 85.3º ([[TJ-II:Sectors\|sector]] A8).
	~~It provides profiles of~~ the ~~electron temperature and density~~ in the ~~plasma edge at a repetition rate of up to 200 Hz~~.		The signals are stored in the [[TJ-II:Shot database\|TJ-II database]] with the names 'He_xxx_yy', where 'xxx' is the wavelength in nm (667, 706, or 728), while 'yy' is the position (from 01 through 16).
	[[File:TJ-II He beam.jpg\|400px\|thumb\|left\|Photo of He beam diagnostic (top port)]]		[[File:TJ-II He beam.jpg\|400px\|thumb\|left\|Photo of He beam diagnostic (top port)]]

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

Admin at 14:34, 18 October 2009

2009-10-18T14:34:20Z

← Older revision		Revision as of 16:34, 18 October 2009
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	It is located at φ = 85.3º ([[TJ-II:Sectors\|sector]] A8).		It is located at φ = 85.3º ([[TJ-II:Sectors\|sector]] A8).
	It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.		It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.
			[[File:TJ-II He beam.jpg\|400px\|thumb\|left\|Photo of He beam diagnostic (top port)]]

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

Admin at 16:52, 3 October 2009

2009-10-03T16:52:01Z

← Older revision		Revision as of 18:52, 3 October 2009
Line 2:		Line 2:

	[[TJ-II]] possesses a supersonic Helium beam diagnostic based on the line ratio method.		[[TJ-II]] possesses a supersonic Helium beam diagnostic based on the line ratio method.
	<ref>[http://link.aip.org/link/?RSINAK/72/602/1 B. Brañas at al., ''Atomic beam diagnostics for characterization of edge plasma in TJ-II stellarator'', Rev. Sci. Instrum. '''72''', 602 (2001)]</ref>		<ref>[http://link.aip.org/link/?RSINAK/72/602/1 B. Brañas et al., ''Atomic beam diagnostics for characterization of edge plasma in TJ-II stellarator'', Rev. Sci. Instrum. '''72''', 602 (2001)]</ref>
	<ref>[http://link.aip.org/link/?RSINAK/75/3478/1 A. Hidalgo et al., ''Multipulse supersonic helium beam diagnostic in the TJ-II stellarator'', Rev. Sci Instrum. '''75''', 3478 (2004)]</ref>		<ref>[http://link.aip.org/link/?RSINAK/75/3478/1 A. Hidalgo et al., ''Multipulse supersonic helium beam diagnostic in the TJ-II stellarator'', Rev. Sci Instrum. '''75''', 3478 (2004)]</ref>
	<ref>[http://dx.doi.org/10.1016/j.jnucmat.2009.01.290 F. Guzmán et al, ''On the determination of edge Ti profiles by a supersonic He beam in TJ-II'', Journal of Nuclear Materials '''390-391''' (2009) 1127-1130]</ref>		<ref>[http://dx.doi.org/10.1016/j.jnucmat.2009.01.290 F. Guzmán et al, ''On the determination of edge Ti profiles by a supersonic He beam in TJ-II'', Journal of Nuclear Materials '''390-391''' (2009) 1127-1130]</ref>

Admin at 19:52, 23 September 2009

2009-09-23T19:52:05Z

← Older revision		Revision as of 21:52, 23 September 2009
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	<ref>[http://link.aip.org/link/?RSINAK/72/602/1 B. Brañas at al., ''Atomic beam diagnostics for characterization of edge plasma in TJ-II stellarator'', Rev. Sci. Instrum. '''72''', 602 (2001)]</ref>		<ref>[http://link.aip.org/link/?RSINAK/72/602/1 B. Brañas at al., ''Atomic beam diagnostics for characterization of edge plasma in TJ-II stellarator'', Rev. Sci. Instrum. '''72''', 602 (2001)]</ref>
	<ref>[http://link.aip.org/link/?RSINAK/75/3478/1 A. Hidalgo et al., ''Multipulse supersonic helium beam diagnostic in the TJ-II stellarator'', Rev. Sci Instrum. '''75''', 3478 (2004)]</ref>		<ref>[http://link.aip.org/link/?RSINAK/75/3478/1 A. Hidalgo et al., ''Multipulse supersonic helium beam diagnostic in the TJ-II stellarator'', Rev. Sci Instrum. '''75''', 3478 (2004)]</ref>
			<ref>[http://dx.doi.org/10.1016/j.jnucmat.2009.01.290 F. Guzmán et al, ''On the determination of edge Ti profiles by a supersonic He beam in TJ-II'', Journal of Nuclear Materials '''390-391''' (2009) 1127-1130]</ref>
	It is located at φ = 85.3º ([[TJ-II:Sectors\|sector]] A8).		It is located at φ = 85.3º ([[TJ-II:Sectors\|sector]] A8).
	It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.		It provides profiles of the electron temperature and density in the plasma edge at a repetition rate of up to 200 Hz.