Different Approaches for Analytic and Numerical Estimation of Operation Temperature of Cooled Cathode Surface in High Voltage Glow Discharge Electron Guns

Melnyk, Igor; Tuhai, Serhii; Surzhykov, Mykola; Shved, Iryna; Melnyk, Vitaliy; Kovalchuk, Dmytro

doi:10.1007/978-3-031-16368-5_27

Cited by 2 publications

(10 citation statements)

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“…The peculiarities of estimating the position of the plasma boundary in HVGD electrode systems, which form electron beams with a linear and circular focus, were considered in a paper [20]. The general theoretical approach to estimating the operating temperature of the cold cathodes of the HVGD electron guns was considered in [28].…”

Section: Statement Of the Problemmentioning

confidence: 99%

“…That is why ensuring the effectiveness of water cooling of the cold cathode due to the thermal power released on it as a result of bombardment with residual gas ions is the main technical factor that ensures the stable operation of HVGD electron guns [28].…”

Section: Surface Of High-voltage Glow Discharge Electron Sourcesmentioning

confidence: 99%

“…Estimates of the surface temperature, which are based on relations (1), are most accurate for metals that have high thermal conductivity, and, due to this, the temperature of the surface of the metal, which is heated by a high-energy stream of charged particles, can be assumed to be the same with great accuracy [28]. Therefore, for the preliminary analysis of the temperature of the emission surface of the cathode of the HVGD electron guns, the ratio (1) is used.…”

Section: Surface Of High-voltage Glow Discharge Electron Sourcesmentioning

confidence: 99%

“…Therefore, for the preliminary analysis of the temperature of the emission surface of the cathode of the HVGD electron guns, the ratio (1) is used. For electrode systems with direct cooling of the cathode by a coolant, the heat balance equation ( 1) is written as follows [28]:…”

Section: Surface Of High-voltage Glow Discharge Electron Sourcesmentioning

confidence: 99%

“…The work [28] presented the results of modeling the cooling system of the cathode unit through the copper base in the case of considering a gap between the cathode and the base and without such a gap. The simulation was carried out in the pdetool program of the MatLab system for scientific and technical calculations [28; 40].…”

Section: Surface Of High-voltage Glow Discharge Electron Sourcesmentioning

confidence: 99%

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Evaluation of the thermal regime of the cathode operation of a high-voltage glow discharge electron gun, which forms a ribbon electron beam

Melnyk,

Tuhai,

Kovalchuk

et al. 2024

SRIT

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The article discusses the various methods of estimating the surface cathode temperature of the high-voltage glow discharge electron gun, which forms a ribbon electron beam with a linear focus. Numerical estimations have been made to design the cathode assembly of an industrial gun. It is shown that the most effective way to make approximate estimates of the temperature of the cathode surface in high-voltage glow discharge electron guns for various technological purposes is to use arithmetic-logical ratios for modeling the geometry of the cathode assembly and locus functions for estimating the temperature distribution. The accuracy of such estimates, made using the heat balance equation, was 5–10%, sufficient at the initial stage of designing an electron gun. It is shown that using the SolidWorks CAD software complex for designing high-voltage glow discharge electron guns is effective only for solving the complex engineering design tasks and preparing the corresponding technical documentation. The results of the theoretical research published in the article are of interest to a wide range of specialists engaged in developing electron beam equipment and its implementation in industrial production.

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Section: Statement Of the Problemmentioning

confidence: 99%

Section: Surface Of High-voltage Glow Discharge Electron Sourcesmentioning

confidence: 99%

Section: Surface Of High-voltage Glow Discharge Electron Sourcesmentioning

confidence: 99%

Section: Surface Of High-voltage Glow Discharge Electron Sourcesmentioning

confidence: 99%

Section: Surface Of High-voltage Glow Discharge Electron Sourcesmentioning

confidence: 99%

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