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Quasi-Optical Simulations of Electron Cyclotron Plasma Heating at the Fundamental and Second Harmonics at the GDMT Facility.

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Title: Quasi-Optical Simulations of Electron Cyclotron Plasma Heating at the Fundamental and Second Harmonics at the GDMT Facility.
Authors: Gospodchikov, E. D.1 (AUTHOR) egos@ipfran.ru, Khusainov, T. A.1 (AUTHOR), Solomakhin, A. L.2 (AUTHOR), Shalashov, A. G.1 (AUTHOR)
Source: Plasma Physics Reports. Apr2026, Vol. 52 Issue 4, p420-433. 14p.
Subjects: Plasma heating, Second harmonic generation, Gyrotrons, Cyclotron resonance, Electromagnetic wave propagation
Abstract: Two schemes for auxiliary ECR plasma heating for the GDMT project, operating at frequencies of 82.6 GHz and 170 GHz, are compared. The choice of frequencies is determined by the availability of domestic megawatt-power gyrotrons manufactured by JSC GYCOM. Both schemes use transverse launch of radiation relative to the trap axis with focusing near the X-point of the magnetic field, and operate with the same (within 3%) resonant magnetic field. The 82.6 GHz heating is based on the absorption of the ordinary wave at the fundamental cyclotron harmonic, while the 170 GHz heating is based on the absorption of the extraordinary wave at the second cyclotron harmonic. The feasibility of efficient plasma heating with both schemes is demonstrated by simulations of the microwave field interaction with the GDMT plasma using the QOOT quasi-optical code. However, the 170 GHz heating scheme has revealed a number of advantages that suggest it as the best option providing the greatest reliability and flexibility for physical experiments at GDMT. [ABSTRACT FROM AUTHOR]
Copyright of Plasma Physics Reports is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Quasi-Optical Simulations of Electron Cyclotron Plasma Heating at the Fundamental and Second Harmonics at the GDMT Facility.
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  Data: <searchLink fieldCode="DE" term="%22Plasma+heating%22">Plasma heating</searchLink><br /><searchLink fieldCode="DE" term="%22Second+harmonic+generation%22">Second harmonic generation</searchLink><br /><searchLink fieldCode="DE" term="%22Gyrotrons%22">Gyrotrons</searchLink><br /><searchLink fieldCode="DE" term="%22Cyclotron+resonance%22">Cyclotron resonance</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+wave+propagation%22">Electromagnetic wave propagation</searchLink>
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  Label: Abstract
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  Data: Two schemes for auxiliary ECR plasma heating for the GDMT project, operating at frequencies of 82.6 GHz and 170 GHz, are compared. The choice of frequencies is determined by the availability of domestic megawatt-power gyrotrons manufactured by JSC GYCOM. Both schemes use transverse launch of radiation relative to the trap axis with focusing near the X-point of the magnetic field, and operate with the same (within 3%) resonant magnetic field. The 82.6 GHz heating is based on the absorption of the ordinary wave at the fundamental cyclotron harmonic, while the 170 GHz heating is based on the absorption of the extraordinary wave at the second cyclotron harmonic. The feasibility of efficient plasma heating with both schemes is demonstrated by simulations of the microwave field interaction with the GDMT plasma using the QOOT quasi-optical code. However, the 170 GHz heating scheme has revealed a number of advantages that suggest it as the best option providing the greatest reliability and flexibility for physical experiments at GDMT. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Plasma Physics Reports is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1134/S1063780X26600337
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        Text: English
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        Type: general
      – SubjectFull: Second harmonic generation
        Type: general
      – SubjectFull: Gyrotrons
        Type: general
      – SubjectFull: Cyclotron resonance
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      – SubjectFull: Electromagnetic wave propagation
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      – TitleFull: Quasi-Optical Simulations of Electron Cyclotron Plasma Heating at the Fundamental and Second Harmonics at the GDMT Facility.
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              Text: Apr2026
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              Y: 2026
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