Traditional vs. advanced Bragg reflectors for oversized circular waveguide

被引：7

作者：

Ceccuzzi, S. ^{[1
]}

Doria, A. ^{[1
]}

Gallerano, G. P. ^{[1
]}

Ravera, G. L. ^{[1
]}

Spassovsky, I. ^{[1
]}

Ginzburg, N. S. ^{[2
]}

Glyavin, M. Yu. ^{[2
]}

Peskov, N. Yu. ^{[2
]}

Savilov, A. V. ^{[2
]}

机构：

[1] ENEA, Fus Phys Div, Via E Fermi 45, I-00044 Frascati, Rome, Italy

[2] RAS, Inst Appl Phys, Nizhnii Novgorod, Russia

来源：

FUSION ENGINEERING AND DESIGN | 2017年 / 123卷

关键词：

Distributed Bragg reflector; CARM; Oversized waveguide; Corrugated waveguide; DESIGN;

D O I：

10.1016/j.fusengdes.2017.02.059

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：

This paper compares two types of distributed Bragg reflector, based on the periodic wall perturbation of an oversized circular waveguide. The first type is a traditional mirror, where wall ripples with a period of half a guided wavelength for the working mode couple forward and backward waves. The other type is an advanced reflector with a ripple period of about a guided wavelength, exploiting an intermediate conversion into a quasi-cutoff mode. The design of both reflectors has been optimized with a mode matching code to deliver a reflectivity >96% for the TE5,3 mode at 250 GHz and a power to gun <0.5% in copper waveguides with a diameter of 15 mm. Such specifications are relevant to the upstream mirror of a cyclotron auto-resonance maser under development at ENEA Frascati. The two types of reflector are compared in terms of mechanical dimensions, reflectivity, bandwidth and losses. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：477 / 480

页数：4

共 11 条

[1] FELS WITH BRAGG REFLECTION RESONATORS - CYCLOTRON AUTORESONANCE MASERS VERSUS UBITRONS [J].

BRATMAN, VL ;

DENISOV, GG ;

GINZBURG, NS ;

PETELIN, MI .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1983, 19 (03) :282-296

[2]

Ceccuzzi S., 2014, 9 INT WORKSH STRONG, P209

[3] Mode Filters for Oversized Rectangular Waveguides: A Modal Approach [J].

Ceccuzzi, Silvio ;

Ponti, Cristina ;

Ravera, Gian Luca ;

Schettini, Giuseppe .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2015, 63 (08) :2468-2481

[4] BRAGG REFLECTORS [J].

CHONG, CK ;

MCDERMOTT, DB ;

RAZEGHI, MM ;

LUHMANN, NC ;

PRETTEREBNER, J ;

WAGNER, D ;

THUMM, M ;

CAPLAN, M ;

KULKE, B .

IEEE TRANSACTIONS ON PLASMA SCIENCE, 1992, 20 (03) :393-402

[5] Preliminary Conceptual Design of DEMO EC System [J].

Garavaglia, S. ;

Bin, W. ;

Bruschi, A. ;

Granucci, G. ;

Grossetti, G. ;

Jelonnek, J. ;

Moro, A. ;

Rispoli, N. ;

Strauss, D. ;

Tran, Q. M. ;

Franke, T. .

RADIOFREQUENCY POWER IN PLASMAS, 2015, 1689

[6] Tunable terahertz band planar Bragg reflectors [J].

Ginzburg, N. S. ;

Malkin, A. M. ;

Peskov, N. Yu. ;

Sergeev, A. S. ;

Zaslavsky, V. Yu. ;

Kamada, K. ;

Soga, Y. .

APPLIED PHYSICS LETTERS, 2009, 95 (04)

[7]

Jelonnek J., 2016, 29 S FUS TECHN SEPT

[8]

Kamada K., 2013, PLASMA FUSION RES, V8

[9] DESIGN OF A WAVE-GUIDE RESONATOR WITH RIPPLED WALL REFLECTORS FOR A 100 GHZ CARM OSCILLATOR EXPERIMENT [J].

MCCOWAN, RB ;

FLIFLET, AW ;

GOLD, SH ;

GRANATSTEIN, VL ;

WANG, MC .

INTERNATIONAL JOURNAL OF ELECTRONICS, 1988, 65 (03) :463-475

[10] A high frequency, high power CARM proposal for the DEMO ECRH system [J].

Mirizzi, Francesco ;

Spassovsky, Ivan ;

Ceccuzzi, Silvio ;

Dattoli, Giuseppe ;

Di Palma, Emanuele ;

Doria, Andrea ;

Gallerano, Gianpiero ;

Lampasi, Alessandro ;

Maffia, Giuseppe ;

Ravera, GianLuca ;

Sabia, Elio ;

Tuccillo, Angelo Antonio ;

Zito, Pietro .

FUSION ENGINEERING AND DESIGN, 2015, 96-97 :538-541

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