CAJ | 학술논문

漂移管直线加速器（DTL）是中国散裂中子源（CSNS）直线加速器的主要部分，负责将脉冲流强为15 mA的负氢离子从3 MeV加速到80 MeV ，再注入到快循环同步加速器（RCS）中实现进一步加速。CSNS DTL由4节长度约9 m的RF腔体组成，单节RF腔体由1台3 MW的速调管提供功率。每节腔体又分为3段长约3 m的机械腔体以便于加工和安装。DTL腔体和漂移管的研制是整个CSNS直线加速器的关键。本文介绍了CSNS DTL研制过程，包括国内首次在强流质子加速器RF腔内表面进行高导无氧铜电镀、新型磁铁线圈的研制、小孔径磁铁的高精度测量等。加工及测试结果均满足CSNS的设计要求。
표이관직선가속기（DTL）시중국산렬중자원（CSNS）직선가속기적주요부분，부책장맥충류강위15 mA적부경리자종3 MeV가속도80 MeV ，재주입도쾌순배동보가속기（RCS）중실현진일보가속。CSNS DTL유4절장도약9 m적RF강체조성，단절RF강체유1태3 MW적속조관제공공솔。매절강체우분위3단장약3 m적궤계강체이편우가공화안장。DTL강체화표이관적연제시정개CSNS직선가속기적관건。본문개소료CSNS DTL연제과정，포괄국내수차재강류질자가속기RF강내표면진행고도무양동전도、신형자철선권적연제、소공경자철적고정도측량등。가공급측시결과균만족CSNS적설계요구。
The 324 MHz alvarez‐type drift tube linac (DTL) for China Spallation Neu‐tron Source is used to accelerate the H - ion beam .It can provide 15 mA peak current beam with energy gain from 3 MeV to 80 MeV .It consists of four independent tanks ,of which the average length is about 9 m .Each tank is driven by a 3 MW klystron respec‐tively .Each tank is divided into three short unit sections for ease of fabrication and as‐sembly .The construction of DTL cavity and drift tube is the most critical technical in CSNS .In this paper ,the fabrication process of DTL was introduced ,including the first time to perform copper electroplating with high electrical conductivity in the domestic high intensity beam accelerator ,the design study on the newly developed electro‐magnet coil and the high accuracy magnetic field measurement .The measurement results can satisfy with the physical design .