束流診斷系統(tǒng)是粒子加速器調(diào)試和穩(wěn)定運(yùn)行的重要基礎(chǔ),常被稱作加速器的“眼睛”和“耳朵”。在加速器中,需要測量的束流參數(shù)主要包括束流強(qiáng)度、橫向位置、橫向尺寸、縱向長度、能量等。近年來,針對(duì)自由電子激光、衍射極限儲(chǔ)存環(huán)以及小型化的加速器概念(如太赫茲驅(qū)動(dòng)加速等)的研究引起了廣泛關(guān)注,新裝置的建設(shè)往往伴隨著對(duì)束測系統(tǒng)的特定要求。任何一個(gè)加速器裝置都需要綜合自身的束流特性、測量需求以及預(yù)算成本等設(shè)計(jì)最優(yōu)化的束測系統(tǒng)。本文主要分為兩個(gè)部分:針對(duì)國家同步輻射實(shí)驗(yàn)室的紅外自由電子激光(IR-FEL)項(xiàng)目中束流位置探測器(BPM)系統(tǒng)的設(shè)計(jì)研究;基于太赫茲(THz)驅(qū)動(dòng)條紋相機(jī)中關(guān)鍵部件——THz諧振器的設(shè)計(jì)優(yōu)化,擬達(dá)到飛秒(fs)量級(jí)的束團(tuán)長度測量分辨率。IR-FEL裝置中束流位置測量系統(tǒng)的設(shè)計(jì)近幾年,國家同步輻射實(shí)驗(yàn)室新建了一個(gè)緊湊型的IR-FEL裝置,用于提供波長范圍覆蓋遠(yuǎn)紅外到中紅外的連續(xù)可調(diào)諧激光。該裝置的微脈沖重復(fù)頻率在476 MHz、238 MHz、119 MHz、59.5 MHz間可調(diào),要求達(dá)到好于50 μm的宏脈沖位置分辨率。考慮到裝置對(duì)分辨率沒有太高的要求,我們選用機(jī)械結(jié)構(gòu)最簡單、成...

【文章頁數(shù)】：182 頁

【學(xué)位級(jí)別】：博士

【文章目錄】：
英文部分
    Abstract
    List of Abbreviations and Symbols
    1 Introduction
        1.1 Particle accelerators
        1.2 Beam diagnostics in particle accelerators
            1.2.1 Main beam parameters
            1.2.2 Beam position monitors
            1.2.3 Bunch length measurement
        1.3 Outline the dissertation
    2 Introduction to BPM and THz driven deflector based streak camera
        2.1 beam position monitors
            2.1.1 Button BPM
            2.1.2 Stripline BPM
            2.1.3 Cavity BPM
            2.1.4 Resonant stripline BPM
        2.2 THz driven deflector based streak camera
            2.2.1 The motivation of developing THz driven streak camera
            2.2.2 Recent progress on THz driven streak camera
    3 BPM system for the IR-FEL project
        3.1 Design of the BPM system
            3.1.1 Button BPM
            3.1.2 Resonant stripline BPM
            3.1.3 electronics system
            3.1.4 Evaluation of position resolution
        3.2 Laboratory tests of BPM prototypes
            3.2.1 Button BPM
            3.2.2 Resonant stripline BPM
        3.3 Online measurement with button BPM
        3.4 Summary
    4 THz driven deflector based streak camera
        4.1 Three potential designs of THz deflector
            4.1.1 ISRR
            4.1.2 ISRR array
            4.1.3 Dielectric tube
            4.1.4 Comparison between these three THz deflectors
        4.2 THz streaking experiment for 35MeV electron beam with ISRR structure
            4.2.1 Simulation results
            4.2.2 Experiment results and discussion
            4.2.3 Conclusion
        4.3 Analysis of multipole fields
            4.3.1 ISRR and ISRR array structures
            4.3.2 Dielectric tube structure
            4.3.3 Comparison between these three THz deflectors
        4.4 Optimization of these three THz deflectors
            4.4.1 Optimization of ISRR
            4.4.2 Optimization of ISRR array
            4.4.3 Optimization of Dielectric tube
            4.4.4 Conclusion
        4.5 Summary
    5 Conclusion
    Bibliography
    Acknowledgements
    Publications
    Participated research projects
中文部分
    中文摘要
    第一部分 緒論
    第二部分 紅外自由電子激光裝置中束流位置測量系統(tǒng)的設(shè)計(jì)
    第三部分 太赫茲驅(qū)動(dòng)條紋相機(jī)的相關(guān)研究
    第四部分 總結(jié)



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