Experimental Testing of the European TH1509U 170-GHz 1-MW CW Industrial Gyrotron—Long Pulse Operation

Rzesnicki, T.; Ioannidis, Zisis C.; Avramidis, Konstantinos A.; Chelis, Ioannis; Gantenbein, G.; Hogge, J.‐P.; Illy, S.; Jelonnek, John; Jin, Jianbo; Leggieri, Alberto; Legrand, François; Pagonakis, Ioannis Gr.; Sánchez, F.; Thumm, M.

doi:10.1109/led.2022.3152184

Cited by 11 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Russian 170-GHz ITER gyrotron obtained 0.99 (1.2) MW with a pulse duration of 1000 (100) s and 53% efficiency [7] . The prototype tube of the European 170-GHz gyrotron achieved the power of 0.92MW in 180s pulses duration at 38% efficiency and 96% Gaussian mode purity [8] . The prototype of the Chinese 170-GHz gyrotron with double-anode MIG has been studied in order to achieve 1-MW power [9] .…”

Section: Introductionmentioning

confidence: 99%

Study of long-pluse high-power 170GHz gyrotron for fusion plasma ECRH

Liu¹,

Wang

Chen³

et al. 2023

Earth and Space: From Infrared to Terahertz (ESIT 2022)

View full text Add to dashboard Cite

The MW gyrotrons are key devices in ECRH of magnetic confinement nuclear fusion systems. In order to achieve the high power and long pulse of the 170GHz gyrotron, which are adopted in the CFETR, a TE25.10-mode 170GHz gyrotron research are given in this paper. A single-anode magnetron injection gun (MIG) and the cylindrical resonant cavity operating are designed and optimized by PIC. The theoretical output power of the gyrotron with operating Voltage 75kV, electron current 45A is about 1.1MW, corresponding to electron efficiency of 32.6%. The gyrotron has been fabricated with the single-depressed collector and quasi-optical mode converter and will be tested in the future.

show abstract

Section: Introductionmentioning

confidence: 99%

Study of long-pluse high-power 170GHz gyrotron for fusion plasma ECRH

Liu¹,

Wang

Chen³

et al. 2023

Earth and Space: From Infrared to Terahertz (ESIT 2022)

View full text Add to dashboard Cite

show abstract

“…[1,2] Because of the capability of delivering up to megawatts power level, ECM-based devices, including gyrotron oscillators, [3][4][5][6] and gyrotron traveling-wave tubes (gyro-TWTs), [7][8][9] play a unique role in the millimeter-terahertz (THz) band. The important applications of the devices include advanced spectroscopic techniques, [10,11] remote sensing, [12,13] fusion plasma heating, [14,15] biomedicine therapy, [16] etc. Unfortunately, as the frequency is boosted to the terahertz band, circuit heating from ohmic losses limits the output power and operating frequency of the devices, especially under the condition of continuous-wave operation.…”

Section: Introductionmentioning

confidence: 99%

Instability Entanglement in the Electron Cyclotron Maser

Gao

et al. 2023

Annalen der Physik

View full text Add to dashboard Cite

Investigation of absolute instability (AI) and convective instability (CI) of the electron cyclotron maser has independently led to the birth of gyrotron oscillators and amplifiers. Here, it is demonstrated that these instabilities can form a cooperative relationship owing to the nonlinear behavior of the stimulated electron beam. The CI can be induced in a zero‐drive system with the assistance of AI, and the ohmic losses of all the excited waves inside the system are greatly reduced, which is called “instability entanglement” here. According to the theoretical and experimental study of a 167/330 GHz gyrotron, when instability entanglement occurs, the ohmic dissipation decreases to one‐ninth of the AI‐only condition, and the output power is enhanced by 20%. This discovery is promising for surpassing the ceiling of output power and frequency of gyrodevices placed by ohmic losses.

show abstract

“…Microwave radiation is currently being increasingly used in various fields of science and technology. Namely, large-scale work is underway to create controlled thermonuclear fusion reactors, where powerful microwave generators are actively applied [1][2][3]. On the basis of sources of millimeter and submillimeter radiation, promising complexes are being created for the treatment of cancer [4], the production of diamond films and disks by the chemical vapor deposition (CVD) method [5], and scientific installations for studying the properties of various media.…”

Section: Introductionmentioning

confidence: 99%

Application of Chemical Metallization of Photopolymer Structures Additive Technology in the Production of Components for Electronic Devices

Proyavin,

Kotomina,

Orlovskiy

et al. 2023

Micromachines

View full text Add to dashboard Cite

In this paper, we studied the operability of various components of vacuum electronic devices manufactured using the novel chemical metallization of photopolymer 3D-printed structures technology (CMPS), which is being applied at the Institute of Applied Physics, Russian Academy of Sciences (IAP RAS), for operation from microwave to sub-terahertz ranges. The key feature of this production method is the 3D printing (SLA/DLP, MJM technologies) of products and their further metallization. The paper presents the main stages of the process of chemical copper plating of polymer bases in various electrodynamic systems with complex shapes. A significant difference in the geometry and operating conditions of the created elements forms certain approaches to their production, as described in this work. Experimental studies of the implemented microwave components were carried out up to 700 GHz in the “cold” measurements; some electrodynamic structures were examined under conditions of sub-gigawatt peak power; and complex-shaped electrodes with cooling channels were tested under a continuous high thermal load. The conducted research has demonstrated the high potential of the developed methods of additive manufacturing of microwave device components and the prospects for their successful application in the described areas.

show abstract

Experimental Testing of the European TH1509U 170-GHz 1-MW CW Industrial Gyrotron—Long Pulse Operation

Cited by 11 publications

References 9 publications

Study of long-pluse high-power 170GHz gyrotron for fusion plasma ECRH

Study of long-pluse high-power 170GHz gyrotron for fusion plasma ECRH

Instability Entanglement in the Electron Cyclotron Maser

Application of Chemical Metallization of Photopolymer Structures Additive Technology in the Production of Components for Electronic Devices

Contact Info

Product

Resources

About