First validation experiments of the prototype solid state RF system for IFMIF-DONES

被引：6

作者：

de la Morena, Cristina ^{[1
]}

Regidor, David ^{[1
,2
]}

Iriarte, Daniel ^{[3
]}

Sierra, Francisco ^{[3
]}

Ugarte, Eduardo ^{[3
]}

Dragas, Sasa ^{[4
]}

Marini, Paolo ^{[4
]}

Molla, Joaquin ^{[1
]}

Ibarra, Angel ^{[1
]}

机构：

[1] Ctr Invest Energet, Lab Nacl Fus, Medioambient Tecnol, Madrid, Spain

[2] Univ Nacl Educac Distancia, Madrid, Spain

[3] Broad Telecom SA, Leganes, Spain

[4] RYMSA Sener Aeroespacial, Arganda Del Rey, Spain

来源：

FUSION ENGINEERING AND DESIGN | 2021年 / 168卷

关键词：

IFMIF-DONES; Radiofrequency power systems; Resonant cavity combiner; Solid-state amplifiers;

D O I：

10.1016/j.fusengdes.2021.112396

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Following the current tendency towards solid-state (SS) amplification technology, the IFMIF-DONES (International Fusion Materials Irradiation Facility - DEMO-oriented Neutron Source) Radiofrequency (RF) Power System will be fully based on SS technology. A challenging issue in high power SS amplifiers is focused on the search of an efficient combination technique for a very large number of power signals. A promising RF power combination technique has been proposed for IFMIF-DONES: a resonant cavity combiner. The crucial characteristic of this combining technology is that the high power combination is achieved in just one step, by means of coupling the outputs of a large number of active devices into a resonant circuit. This improves the efficiency compared with traditional corporate topologies, which is a key aspect for SS amplifiers. In addition, it results in a very compact design, although its circular shape may complicate the design of other SSPA components, which are more standardized for rectangular cubicles or rack solutions. In order to demonstrate the feasibility of this combination technology for the IFMIF-DONES RF Power System, a prototype cavity combiner has been designed and fabricated. It has been validated at small-signal and at medium-high power levels: up to 24 kW in continuous wave (CW) and 100 kW in pulsed mode (duty cycle DC = 4%). The design of this prototype combiner and the results of the first validation experiments are presented in this paper.

引用

页数：5

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