TJ-II:Role of isotope mass on the radial width of Zonal Flows: Difference between revisions
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== Experimental campaign == | == Experimental campaign == | ||
2019 Spring | |||
== Proposal title == | == Proposal title == | ||
''' | '''Influence of isotope mass and heating scenario on the amplitude and radial width of Zonal Flows''' | ||
== Ulises Losada | == Name and affiliation == | ||
Ulises Losada (Ciemat), T Kobayashi (NIFS), B. Liu (ENN, China) and Carlos Hidalgo (Ciemat) | |||
== | == Description == | ||
== | Time-space properties of the global potential oscillation, which is related to the low frequency zonal flows, have been investigated in two plasma scenarios produced by ECRH and NBI heating schemes that are characterized by different mean radial electric field structures. | ||
The width of the oscillating structure strongly depends on the heating scheme <ref>T Kobayashi, U Losada, B Liu et al., Nuclear Fusion (2019) in press</ref>. Preliminary results roughly suggest that the radial width of LRC increases with the ion mass in NBI scenarios <ref>U Losada PhD Thesis (2019)</ref>. Those results show, for the first time and with unprecedented detail, how sensitive are the properties of zonal flows to plasma conditions, providing a key experimental guidance for model validation. | |||
The current database has about 20 discharges (10 in NBI and 10 in ECRH plasmas). As we need to asses the reproducibility of the previous results, the goal of this proposal is to expand the existing database of the width of zonal flows with special emphasis on the isotope mass effect. | |||
Reference plasma pulses: 43702-09; 44202-11 | |||
== collaboration == | |||
collaboration with | |||
NIFS: Tatsuya Kobayashi (Japan) and | |||
ENN: Bing Liu (People's Republic of China) | |||
== 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 | ||
* Essential diagnostic systems: | * Essential diagnostic systems: dual edge probes, dual HIBP | ||
* Type of plasmas (heating configuration): | * Type of plasmas (heating configuration):ECRH & NBI, H and D operation | ||
* Specific requirements on wall conditioning if any: | * Specific requirements on wall conditioning if any: same as during the reference discharges | ||
* External users: need a local computer account for data access: yes | * External users: need a local computer account for data access: yes (if visitors) | ||
== Preferred dates and degree of flexibility == | == Preferred dates and degree of flexibility == | ||
Preferred dates: | Preferred dates: 20-23, May, 2019 | ||
<!-- DO NOT REMOVE THE FOLLOWING LINES --> | <!-- DO NOT REMOVE THE FOLLOWING LINES --> | ||
== References == | == References == | ||
<references /> | <references /> | ||
Latest revision as of 11:49, 26 February 2019
Experimental campaign
2019 Spring
Proposal title
Influence of isotope mass and heating scenario on the amplitude and radial width of Zonal Flows
Name and affiliation
Ulises Losada (Ciemat), T Kobayashi (NIFS), B. Liu (ENN, China) and Carlos Hidalgo (Ciemat)
Description
Time-space properties of the global potential oscillation, which is related to the low frequency zonal flows, have been investigated in two plasma scenarios produced by ECRH and NBI heating schemes that are characterized by different mean radial electric field structures.
The width of the oscillating structure strongly depends on the heating scheme [1]. Preliminary results roughly suggest that the radial width of LRC increases with the ion mass in NBI scenarios [2]. Those results show, for the first time and with unprecedented detail, how sensitive are the properties of zonal flows to plasma conditions, providing a key experimental guidance for model validation.
The current database has about 20 discharges (10 in NBI and 10 in ECRH plasmas). As we need to asses the reproducibility of the previous results, the goal of this proposal is to expand the existing database of the width of zonal flows with special emphasis on the isotope mass effect.
Reference plasma pulses: 43702-09; 44202-11
collaboration
collaboration with NIFS: Tatsuya Kobayashi (Japan) and ENN: Bing Liu (People's Republic of China)
Description of required resources
Required resources:
- Number of plasma discharges or days of operation: 2 days
- Essential diagnostic systems: dual edge probes, dual HIBP
- Type of plasmas (heating configuration):ECRH & NBI, H and D operation
- Specific requirements on wall conditioning if any: same as during the reference discharges
- External users: need a local computer account for data access: yes (if visitors)
Preferred dates and degree of flexibility
Preferred dates: 20-23, May, 2019