Shadowing effects on multi-step Langmuir probe array on HL-2A tokamak
R. Ke, M. Xu, L. Nie, Z. Gao, Y. Wu, B. Yuan, J. Chen, X. Song, L. Yan and X. Duan
Institute of Physics Publishing (IOP)
Published 2018
Institute of Physics Publishing (IOP)
Published 2018
| Publication Date: |
2018-05-25
|
|---|---|
| Publisher: |
Institute of Physics Publishing (IOP)
|
| Electronic ISSN: |
1748-0221
|
| Topics: |
Physics
|
| Published by: |
| _version_ | 1836398942272618496 |
|---|---|
| autor | R. Ke, M. Xu, L. Nie, Z. Gao, Y. Wu, B. Yuan, J. Chen, X. Song, L. Yan and X. Duan |
| beschreibung | Multi-step Langmuir probe arrays have been designed and installed on the HL-2A tokamak [1]–[2] to study the turbulent transport in the edge plasma, especially for the measurement of poloidal momentum flux, Reynolds stress Rs . However, except the probe tips on the top step, all other tips on lower steps are shadowed by graphite skeleton. It is necessary to estimate the shadowing effects on equilibrium and fluctuation measurement. In this paper, comparison of shadowed tips to unshadowed ones is presented. The results show that shadowing can strongly reduce the ion and electron effective collection area. However, its effect is negligible for the turbulence intensity and coherence measurement, confirming that the multi-step LP array is proper for the turbulent transport measurement. |
| citation_standardnr | 6266579 |
| datenlieferant | ipn_articles |
| feed_id | 66992 |
| feed_publisher | Institute of Physics Publishing (IOP) |
| feed_publisher_url | http://www.iop.org/ |
| insertion_date | 2018-05-25 |
| journaleissn | 1748-0221 |
| publikationsjahr_anzeige | 2018 |
| publikationsjahr_facette | 2018 |
| publikationsjahr_intervall | 7984:2015-2019 |
| publikationsjahr_sort | 2018 |
| publisher | Institute of Physics Publishing (IOP) |
| quelle | Journal of Instrumentation |
| relation | http://iopscience.iop.org/1748-0221/13/05/P05027 |
| search_space | articles |
| shingle_author_1 | R. Ke, M. Xu, L. Nie, Z. Gao, Y. Wu, B. Yuan, J. Chen, X. Song, L. Yan and X. Duan |
| shingle_author_2 | R. Ke, M. Xu, L. Nie, Z. Gao, Y. Wu, B. Yuan, J. Chen, X. Song, L. Yan and X. Duan |
| shingle_author_3 | R. Ke, M. Xu, L. Nie, Z. Gao, Y. Wu, B. Yuan, J. Chen, X. Song, L. Yan and X. Duan |
| shingle_author_4 | R. Ke, M. Xu, L. Nie, Z. Gao, Y. Wu, B. Yuan, J. Chen, X. Song, L. Yan and X. Duan |
| shingle_catch_all_1 | Shadowing effects on multi-step Langmuir probe array on HL-2A tokamak Multi-step Langmuir probe arrays have been designed and installed on the HL-2A tokamak [1]–[2] to study the turbulent transport in the edge plasma, especially for the measurement of poloidal momentum flux, Reynolds stress Rs . However, except the probe tips on the top step, all other tips on lower steps are shadowed by graphite skeleton. It is necessary to estimate the shadowing effects on equilibrium and fluctuation measurement. In this paper, comparison of shadowed tips to unshadowed ones is presented. The results show that shadowing can strongly reduce the ion and electron effective collection area. However, its effect is negligible for the turbulence intensity and coherence measurement, confirming that the multi-step LP array is proper for the turbulent transport measurement. R. Ke, M. Xu, L. Nie, Z. Gao, Y. Wu, B. Yuan, J. Chen, X. Song, L. Yan and X. Duan Institute of Physics Publishing (IOP) 1748-0221 17480221 |
| shingle_catch_all_2 | Shadowing effects on multi-step Langmuir probe array on HL-2A tokamak Multi-step Langmuir probe arrays have been designed and installed on the HL-2A tokamak [1]–[2] to study the turbulent transport in the edge plasma, especially for the measurement of poloidal momentum flux, Reynolds stress Rs . However, except the probe tips on the top step, all other tips on lower steps are shadowed by graphite skeleton. It is necessary to estimate the shadowing effects on equilibrium and fluctuation measurement. In this paper, comparison of shadowed tips to unshadowed ones is presented. The results show that shadowing can strongly reduce the ion and electron effective collection area. However, its effect is negligible for the turbulence intensity and coherence measurement, confirming that the multi-step LP array is proper for the turbulent transport measurement. R. Ke, M. Xu, L. Nie, Z. Gao, Y. Wu, B. Yuan, J. Chen, X. Song, L. Yan and X. Duan Institute of Physics Publishing (IOP) 1748-0221 17480221 |
| shingle_catch_all_3 | Shadowing effects on multi-step Langmuir probe array on HL-2A tokamak Multi-step Langmuir probe arrays have been designed and installed on the HL-2A tokamak [1]–[2] to study the turbulent transport in the edge plasma, especially for the measurement of poloidal momentum flux, Reynolds stress Rs . However, except the probe tips on the top step, all other tips on lower steps are shadowed by graphite skeleton. It is necessary to estimate the shadowing effects on equilibrium and fluctuation measurement. In this paper, comparison of shadowed tips to unshadowed ones is presented. The results show that shadowing can strongly reduce the ion and electron effective collection area. However, its effect is negligible for the turbulence intensity and coherence measurement, confirming that the multi-step LP array is proper for the turbulent transport measurement. R. Ke, M. Xu, L. Nie, Z. Gao, Y. Wu, B. Yuan, J. Chen, X. Song, L. Yan and X. Duan Institute of Physics Publishing (IOP) 1748-0221 17480221 |
| shingle_catch_all_4 | Shadowing effects on multi-step Langmuir probe array on HL-2A tokamak Multi-step Langmuir probe arrays have been designed and installed on the HL-2A tokamak [1]–[2] to study the turbulent transport in the edge plasma, especially for the measurement of poloidal momentum flux, Reynolds stress Rs . However, except the probe tips on the top step, all other tips on lower steps are shadowed by graphite skeleton. It is necessary to estimate the shadowing effects on equilibrium and fluctuation measurement. In this paper, comparison of shadowed tips to unshadowed ones is presented. The results show that shadowing can strongly reduce the ion and electron effective collection area. However, its effect is negligible for the turbulence intensity and coherence measurement, confirming that the multi-step LP array is proper for the turbulent transport measurement. R. Ke, M. Xu, L. Nie, Z. Gao, Y. Wu, B. Yuan, J. Chen, X. Song, L. Yan and X. Duan Institute of Physics Publishing (IOP) 1748-0221 17480221 |
| shingle_title_1 | Shadowing effects on multi-step Langmuir probe array on HL-2A tokamak |
| shingle_title_2 | Shadowing effects on multi-step Langmuir probe array on HL-2A tokamak |
| shingle_title_3 | Shadowing effects on multi-step Langmuir probe array on HL-2A tokamak |
| shingle_title_4 | Shadowing effects on multi-step Langmuir probe array on HL-2A tokamak |
| timestamp | 2025-06-30T23:35:05.469Z |
| titel | Shadowing effects on multi-step Langmuir probe array on HL-2A tokamak |
| titel_suche | Shadowing effects on multi-step Langmuir probe array on HL-2A tokamak |
| topic | U |
| uid | ipn_articles_6266579 |