本文選題：帶狀電子注 + 電子光學(xué)��； 參考：《電子科技大學(xué)》2015年碩士論文

【摘要】：由于圓柱形軸對(duì)稱電子注的局限性,導(dǎo)致其不能滿足微波器件不斷增長(zhǎng)的頻率,功率需求。帶狀電子注自上世紀(jì)90年代重新成為一個(gè)研究熱點(diǎn)之后,就以其空間電荷場(chǎng)低,能傳輸大電流等獨(dú)特優(yōu)點(diǎn)正在不斷的被人們開(kāi)拓創(chuàng)新。因此研究帶狀電子注正成為一種趨勢(shì),正成為一種需要。帶狀注行波管的研究也是越來(lái)越受到重視,帶狀注電子光學(xué)系統(tǒng)則是其重要組成部分,對(duì)帶狀注行波管的性能有著很大的影響。目前帶狀注微波器件的主要難點(diǎn)在于帶狀注的傳輸聚焦方面,因此研究帶狀注電子光學(xué)系統(tǒng)就顯得尤其必要。本文對(duì)帶狀電子注的產(chǎn)生,傳輸和收集極都進(jìn)行了深入的研究,其工作的主要內(nèi)容如下:一、總結(jié)了行波管帶狀注電子光學(xué)系統(tǒng)的基本結(jié)構(gòu)與原理,以及帶狀注電子光學(xué)系統(tǒng)的基本理論,尤其是對(duì)幾種聚焦磁場(chǎng)進(jìn)行了聚焦理論的總結(jié)。二、采用間接法和直接法產(chǎn)生帶狀電子注,用磁四極子對(duì)圓柱形電子注進(jìn)行壓縮得到帶狀電子注,分析了主要參數(shù)對(duì)電子注的形態(tài)的影響;然后設(shè)計(jì)了橢圓面陰極電子槍產(chǎn)生了帶狀電子注。三、在帶狀電子注的聚焦傳輸上,研究設(shè)計(jì)了三種不同磁場(chǎng)對(duì)同一帶狀電子注的聚焦,包括均勻磁場(chǎng)、wiggler磁場(chǎng)和PCM磁場(chǎng),分析了不同的電子軌跡形成的原因�？偨Y(jié)了幾種磁場(chǎng)對(duì)帶狀注的聚焦效果,分析了不同的應(yīng)用情況。特別的提出了一種外側(cè)凹槽wiggler磁場(chǎng)用于聚焦間接法產(chǎn)生帶狀電子注,其優(yōu)勢(shì)明顯,作用顯著。四、分別用兩種不同的軟件CST粒子工作室和MTSS對(duì)帶狀注的收集極進(jìn)行設(shè)計(jì)研究,提出一種類(lèi)菱形的兩級(jí)降壓收集極結(jié)構(gòu),仿真計(jì)算測(cè)試了其收集效果。并分析了采用降壓收集極的原因以及靜態(tài)流通條件下采用單級(jí)收集極的原因。通過(guò)本文的研究,讓帶狀注電子光學(xué)系統(tǒng)的設(shè)計(jì)形成了一個(gè)整體,使其設(shè)計(jì)過(guò)程更加清晰容易,也為帶狀電子注的研究奠定了重要的基礎(chǔ)。
[Abstract]:Due to the limitation of cylindrical axisymmetric electron beam, it can not meet the increasing frequency and power demand of microwave devices. Since the band electron beam has become a research hotspot since 1990s, it has been innovated continuously because of its unique advantages such as low space charge field, high current transmission and so on. Therefore, the study of band electron beam is becoming a trend and a need. More and more attention has been paid to the study of belt beam traveling wave tube (TWT), and the electron optical system is an important part of TWT, which has a great influence on the performance of TWT. At present, the main difficulty of the band beam microwave device is the transmission and focusing of the band beam, so it is necessary to study the electron optical system of the band beam. In this paper, the generation, transmission and collection of banded electron beam are deeply studied. The main contents of the work are as follows: 1. The basic structure and principle of the traveling wave tube tape beam electron optical system are summarized. The basic theory of electron-optical system with band beam is summarized, especially the focusing theory of several kinds of focusing magnetic field is summarized. Secondly, the band electron beam is produced by indirect method and direct method, and the band electron beam is obtained by magnetic quadrupole compression. The influence of main parameters on the shape of electron beam is analyzed. Then the elliptical cathode electron gun is designed to produce the band electron beam. Thirdly, the focusing transmission of the band electron beam is studied and designed, including the uniform magnetic field wiggler magnetic field and the PCM magnetic field, and the reasons for the formation of different electron trajectories are analyzed. The focusing effect of several magnetic fields on strip injection is summarized, and different applications are analyzed. In particular, a wiggler magnetic field with lateral grooves is proposed to produce band electron beam by focusing indirect method, which has obvious advantages and effects. Fourthly, two different software CST particle workroom and MTSS are used to design and study the collecting pole of strip injection, and a kind of diamond two-stage step-down collector structure is proposed, and its collection effect is tested by simulation calculation. The reasons of adopting the step-down collector and the single stage collector under static circulation are analyzed. Through the research in this paper, the design of the electron optical system of the strip beam becomes a whole, which makes the design process more clear and easy. It also lays an important foundation for the study of the electron beam.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TN124

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 王樹(shù)忠;王勇;丁耀根;阮存軍;;Wiggler聚焦帶狀注速調(diào)管電子光學(xué)系統(tǒng)的設(shè)計(jì)[J];強(qiáng)激光與粒子束;2007年09期

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本文編號(hào)：2069673