Calibration of the KIT test setup for the cooling tests of a gyrotron cavity full-size mock-up equipped with mini-channels

Stanculovic, Sebastian; Difonzo, Rosa; Allio, Andrea; Avramidis, Konstantinos A.; Brücker, Philip; Gantenbein, G.; Illy, S.; Jelonnek, J.; Kalaria, P.; Misko, Moritz; Rzesnicki, T.; Savoldi, Laura

doi:10.1016/j.fusengdes.2021.112744

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…For cavities equipped with MCs, some experimental indications of the reliability of the adopted model came recently from the tests of a cavity mock-up at KIT [49]. However, a very limited temperature range was tested in the 2020 test campaign, which cannot be representative of the actual working conditions in the gyrotron cavity.…”

Section: Validation Of the Th Modelmentioning

confidence: 99%

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A Validation Roadmap of Multi-Physics Simulators of the Resonator of MW-Class CW Gyrotrons for Fusion Applications

et al. 2021

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For a few years the multi-physics modelling of the resonance cavity (resonator) of MW-class continuous-wave gyrotrons, to be employed for electron cyclotron heating and current drive in magnetic confinement fusion machines, has gained increasing interest. The rising target power of the gyrotrons, which drives progressively higher Ohmic losses to be removed from the resonator, together with the need for limiting the resonator deformation as much as possible, has put more emphasis on the thermal-hydraulic and thermo-mechanic modeling of the cavity. To cope with that, a multi-physics simulator has been developed in recent years in a shared effort between several European institutions (the Karlsruher Institut für Technologie and Politecnico di Torino, supported by Fusion for Energy). In this paper the current status of the tool calibration and validation is addressed, aiming at highlighting where any direct or indirect comparisons with experimental data are missing and suggesting a possible roadmap to fill that gap, taking advantage of forthcoming tests in Europe.

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Section: Validation Of the Th Modelmentioning

confidence: 99%

“…More relevant measured data will be available from the tests of the cylindrical mockup of a 140 GHz cavity equipped with MCs [35]. The tests will be performed at the KIT test bench [49] by the end of 2021, using inductive heating and both water and air as coolant.…”

Section: Planned Experimental Campaignsmentioning

confidence: 99%

A Validation Roadmap of Multi-Physics Simulators of the Resonator of MW-Class CW Gyrotrons for Fusion Applications

et al. 2021

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Contact temperature measurement using selected thermoelements for studies of heat transfer during fluid flow in minichannels – metrology investigations

Michalski,

Dadas,

Piasecka

et al. 2024

EPJ Web of Conf.

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This work describes metrology investigations that include uncertainty estimation of contact temperature measurements performed using K- and T-type thermoelements. Temperature measurements were essential in experiments on heat transfer during fluid flow in minichannels. The data acquisition station was used as the main system for collecting temperature data. For metrology investigations of temperature measurement by selected thermoelements, a dry well calibrator was applied. The temperatures measured by the thermoelements were statistically compared using the reference temperature preset on the calibrator. Corrections to the temperature measurement performed by the tested thermoelements were calculated. The relative experimental error and the method accuracy for the thermoelement measurement were determined. The uncertainty of the difference in the temperature measurement for the thermoelements tested with respect to the reference temperature was also provided. The results differed depending on whether the temperature increased or decreased. It confirmed the hysteresis phenomenon.

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Advanced Experimental Investigations on Cooling Concepts of Cavities for Megawatt-Class CW Gyrotrons

Stanculovic,

Avramidis,

Difonzo

et al. 2023

2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

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Calibration of the KIT test setup for the cooling tests of a gyrotron cavity full-size mock-up equipped with mini-channels

Cited by 3 publications

References 7 publications

A Validation Roadmap of Multi-Physics Simulators of the Resonator of MW-Class CW Gyrotrons for Fusion Applications

A Validation Roadmap of Multi-Physics Simulators of the Resonator of MW-Class CW Gyrotrons for Fusion Applications

Contact temperature measurement using selected thermoelements for studies of heat transfer during fluid flow in minichannels – metrology investigations

Advanced Experimental Investigations on Cooling Concepts of Cavities for Megawatt-Class CW Gyrotrons

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