Two-dimensional AXUV-based radiated power density diagnostics on NSTX-U
A new set of radiated-power-density diagnostics for the National Spherical Torus Experiment Upgrade (NSTX-U) tokamak have been designed to measure the two-dimensional poloidal structure of the total photon emissivity profile in order to perform power balance, impurity transport, and magnetohydrodyna...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
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AIP Publishing
2018
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| Online Access: | http://hdl.handle.net/1721.1/113230 https://orcid.org/0000-0001-5049-2769 https://orcid.org/0000-0003-4432-5504 |
| _version_ | 1826208557077364736 |
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| author | Delgado-Aparicio, L. Bell, R. E. Tritz, K. Diallo, A. Gerhardt, S. P. LeBlanc, B. Kozub, T. A. Faust, Ian Charles Stratton, B. C. Parker, R. |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Delgado-Aparicio, L. Bell, R. E. Tritz, K. Diallo, A. Gerhardt, S. P. LeBlanc, B. Kozub, T. A. Faust, Ian Charles Stratton, B. C. Parker, R. |
| author_sort | Delgado-Aparicio, L. |
| collection | MIT |
| description | A new set of radiated-power-density diagnostics for the National Spherical Torus Experiment Upgrade (NSTX-U) tokamak have been designed to measure the two-dimensional poloidal structure of the total photon emissivity profile in order to perform power balance, impurity transport, and magnetohydrodynamic studies. Multiple AXUV-diode based pinhole cameras will be installed in the same toroidal angle at various poloidal locations. The local emissivity will be obtained from several types of tomographic reconstructions. The layout and response expected for the new radially viewing poloidal arrays will be shown for different impurity concentrations to characterize the diagnostic sensitivity. The radiated power profile inverted from the array data will also be used for estimates of power losses during transitions from various divertor configurations in NSTX-U. The effect of in-out and top/bottom asymmetries in the core radiation from high-Z impurities will be addressed. |
| first_indexed | 2024-09-23T14:07:12Z |
| format | Article |
| id | mit-1721.1/113230 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T14:07:12Z |
| publishDate | 2018 |
| publisher | AIP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1132302023-02-26T03:39:21Z Two-dimensional AXUV-based radiated power density diagnostics on NSTX-U Delgado-Aparicio, L. Bell, R. E. Tritz, K. Diallo, A. Gerhardt, S. P. LeBlanc, B. Kozub, T. A. Faust, Ian Charles Stratton, B. C. Parker, R. Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Massachusetts Institute of Technology. Plasma Science and Fusion Center Faust, Ian Charles Parker, Ronald R Stratton, B. C. A new set of radiated-power-density diagnostics for the National Spherical Torus Experiment Upgrade (NSTX-U) tokamak have been designed to measure the two-dimensional poloidal structure of the total photon emissivity profile in order to perform power balance, impurity transport, and magnetohydrodynamic studies. Multiple AXUV-diode based pinhole cameras will be installed in the same toroidal angle at various poloidal locations. The local emissivity will be obtained from several types of tomographic reconstructions. The layout and response expected for the new radially viewing poloidal arrays will be shown for different impurity concentrations to characterize the diagnostic sensitivity. The radiated power profile inverted from the array data will also be used for estimates of power losses during transitions from various divertor configurations in NSTX-U. The effect of in-out and top/bottom asymmetries in the core radiation from high-Z impurities will be addressed. United States. Department of Energy (Contract DE-FC02-99ER54512) 2018-01-19T14:57:49Z 2018-01-19T14:57:49Z 2014-08 2014-07 2018-01-19T13:26:51Z Article http://purl.org/eprint/type/JournalArticle 0034-6748 1089-7623 http://hdl.handle.net/1721.1/113230 Faust, I., et al. “Two-Dimensional AXUV-Based Radiated Power Density Diagnostics on NSTX-U.” Review of Scientific Instruments, vol. 85, no. 11, Nov. 2014, p. 11D856. https://orcid.org/0000-0001-5049-2769 https://orcid.org/0000-0003-4432-5504 http://dx.doi.org/10.1063/1.4890254 Review of Scientific Instruments Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf AIP Publishing MIT Plasma Science & Fusion Center |
| spellingShingle | Delgado-Aparicio, L. Bell, R. E. Tritz, K. Diallo, A. Gerhardt, S. P. LeBlanc, B. Kozub, T. A. Faust, Ian Charles Stratton, B. C. Parker, R. Two-dimensional AXUV-based radiated power density diagnostics on NSTX-U |
| title | Two-dimensional AXUV-based radiated power density diagnostics on NSTX-U |
| title_full | Two-dimensional AXUV-based radiated power density diagnostics on NSTX-U |
| title_fullStr | Two-dimensional AXUV-based radiated power density diagnostics on NSTX-U |
| title_full_unstemmed | Two-dimensional AXUV-based radiated power density diagnostics on NSTX-U |
| title_short | Two-dimensional AXUV-based radiated power density diagnostics on NSTX-U |
| title_sort | two dimensional axuv based radiated power density diagnostics on nstx u |
| url | http://hdl.handle.net/1721.1/113230 https://orcid.org/0000-0001-5049-2769 https://orcid.org/0000-0003-4432-5504 |
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