强激光与粒子束2026，Vol.38Issue(1)：41-43,3.DOI:10.11884/HPLPB202638.250455
国产ECRH 175 GHz兆瓦回旋管实现500 kW/100 s长脉冲输出
Domestic ECRH 175 GHz megawatt gyrotron achieves 500 kW/100 s long-pulse output
摘要
Abstract
[Background]Electron cyclotron resonance heating(ECRH)is essential for plasma heating in magnetic confinement fusion,relying on high-power gyrotrons.Advanced fusion projects such as ITER,CFETR,and BEST require large numbers of high-frequency,high-power,long-pulse gyrotrons.Although such devices have been developed internationally,a fusion-compatible long-pulse megawatt gyrotron had not been achieved in China.[Purpose]This letter presents recent experimental results from a 175 GHz long-pulse gyrotron developed at China Academy of Engineering Physics,aiming to validate its design and demonstrate 100 s continuous operation at the hundred-kilowatt level.[Methods]The gyrotron uses a diamond window,operates in the TE28,11 mode,and employs a triode magnetron injection gun and a single-stage depressed collector with vertical sweeping.Power was measured calorimetrically using a water load,and thermal behavior of key components was monitored.Systematic conditioning and parameter tuning extended pulse length progressively.[Results]The gyrotron achieved a stable output of 500 kW for 100 s with 46%total efficiency.Output frequency remained at 175.04 GHz with less than 40 MHz drift.The measured efficiency matches the design expectations,confirming stable device performance.This is China's first hundred-kilowatt-level 100 s ECRH gyrotron operation.[Conclusions]Successful 500 kW/100 s operation validates the gyrotron design and supports its application in domestic fusion devices.Future efforts will upgrade the power supply for megawatt long-pulse operation and conduct joint tests with domestic fusion facilities.关键词
回旋管/兆瓦/电子回旋共振加热/磁约束聚变Key words
gyrotron/megawatt/electron cyclotron resonance heating/magnetic confinement fusion分类
信息技术与安全科学引用本文复制引用
胡林林,蒋艺,张鲁奇,孙迪敏,马国武,马弘舸,黄麒力,胡鹏,卓婷婷,龚胜刚,刘皓中,向永飞,姚徐,郭俊..国产ECRH 175 GHz兆瓦回旋管实现500 kW/100 s长脉冲输出[J].强激光与粒子束,2026,38(1):41-43,3.基金项目
中物院创新发展基金项目(2024-SCX-ZX02) （2024-SCX-ZX02）
国家自然科学基金项目(12175217) （12175217）
