TH2103A型速调管阳极电流测量和保护系统  

System for Measuring and Protecting the Anode Current of TH2103A Klystron

作　　者：陈娅莉[1] 卢波[1] 白兴宇[1] 马悦心 许凌飞 梁军[1] 左览 CHEN Yali;LU Bo;BAI Xingyu;MA Yuexin;XU Lingfei;LIANG Jun;ZUO Lan(Southwestern Institute of Physics,China National Nuclear Corporation,Chengdu,610041,Sichuan,China)

机构地区：[1]中国核工业集团公司核工业西南物理研究院,四川成都610041

出　　处：《南方能源建设》2024年第3期146-151,共6页Southern Energy Construction

基　　金：国家磁约束聚变能发展专项“多种加热和驱动手段的高功率高效耦合技术”(2022YFE03020002);国家磁约束聚变能发展专项“聚变堆多组分等离子体ICRH及alpha粒子对其影响研究”(2022YFE03190400);国家自然科学基金资助项目“长脉冲高功率双速调管合成技术研究”(12105083)。

摘　　要：[目的]工作频率3.7 GHz的TH2103A型高功率速调管广泛应用在托卡马克实验装置中。为了简化高压供电系统(去掉阳极调制中的电真空四极管),在HL-2A装置的TH2103A型速调管中引入了一种基于分压模式的供电方式。为了保证速调管在该供电模式下安全运行,研制了阳极电流的测量和保护系统。[方法]对该供电模式下的阳极电流特点进行了分析:阳极电流会出现正常、正向过流或反向过流的情况。当阳极电流出现正向过流或反向过流时,代表有大量的电子轰击阳极或大量电子从阳极流出,这些现象对速调管来说都是非常危险的,通常会引起速调管钛泵过流,甚至损坏速调管。因此对阳极电流进行准确的测量以及当阳极电流出现过流时切断高压对速调管进行保护非常重要。文章介绍了阳极电流测量系统的原理和供电模式,阳极保护系统的原理和实施方案,在实验过程中对阳极电流的测量和保护系统的可靠性进行了验证。[结果]证明了该供电模式下阳极电流测量和保护系统的有效性和可靠性。[结论]文章所述供电模式和阳极测量保护系统对基于TH2103A型速调管的运行和维护具有重要参考意义。[Introduction]The 3.7 GHz high-power TH2103A klystrons are widely used in the tokamak experimental device.To simplify the HV power supply system(removing the vacuum tetrode in the anode modulation),a power supply mode based on voltage division mode is introduced into the TH2103A klystron of the HL-2A device.To operate the klystron safely in this power supply mode,a system for measuring and protecting the anode current of TH2103A klystron is developed.[Method]According to the analysis of the characteristics of the anode current in this power supply mode,the anode current showed the condition of normal,forward overcurrent,or reverse overcurrent.In the case of forward overcurrent or reverse overcurrent,it meant that many electrons were bombarding or flowing out of the anode.They were very dangerous to the klystron,which usually may cause overcurrent of the klystron titanium pump,or even damage the klystron.Therefore it was important to accurately measure the anode current and cut off the high voltage to protect the klystron in case of overcurrent.The principle and power supply mode and the principle and implementation plan of the anode protection system were described in this paper.[Result]In this paper,the effectiveness and reliability of the anode current measurement and protection system were confirmed.[Conclusion]The power supply mode and the anode current measurement and protection system of this paper are of important reference significance for the operation and maintenance of TH2103A klystron.words:LHCD;klystron;anode current;measurement;protection 2095-8676©2024 Energy China GEDI.Publishing services by Energy Observer Magazine Co.,Ltd.on behalf of Energy China GEDI.

关 键 词：低杂波 速调管 阳极电流 测量 保护 

分 类 号：TL4[核科学技术—核技术及应用] TL67