S-band J-type waveguide feeding accelerating structure for free electron laser
Hou M(侯汨); Song NB(宋迺斌); He X(贺祥); Zhao FL(赵风利); Pei SL(裴士伦); Wang XJ(王湘鉴); Hou; Mi; Song; Naibin; He; Xiang; Zhao; Fengli; Pei; Shilun; Wang; Xiangjian
刊名HIGH POWER LASER AND PARTICLE BEAMS
2015
卷号27期号:4页码:45109
关键词Accelerating gradient Accelerating structure Cylindrical cavities Mechanical fabrication Racetrack cavities Rotational symmetries Symmetric coupled Transverse momenta
DOI10.11884/HPLPB201527.045109
其他题名用于自由电子激光的S波段J型波导馈电加速管
通讯作者贺祥
文章类型Article
英文摘要With the development of the required gradient of the waveguide coupled TW accelerating structure, for preventing the undesirable transverse momentum contributions being imparted to the beam during traversal of the linac coupler cavities, the use of symmetric dual feed cylindrical cavities which have diametrically opposed side wall coupling apertures has been widely accepted. As one type of the dual feed cylindrical cavities, the prototype of the S-band J-type waveguide feeding accelerating structure developed has got a top accelerating gradient of 30 MV per meter during RF conditioning. However, the transverse gradient of the amplitude and the phase of the longitudinal electric field caused by the existence of the quadrupolar field in the dual feed cylindrical cavity, will also degrade the beam emittance. So the J-type waveguide feeding racetrack cavity is studied theoretically. With comparison of the simulation results to the cylindrical cavity, the racetrack cavity can improve the rotational symmetry of the longitudinal electric field in the non-near axis area in the transverse plane very well, which will reduce the impact of the quadrupolar field. More importantly, the J-type waveguide feeding racetrack cavity is easier in the aspect of mechanical fabrication and measurement, which seems to be a very good direction for the future dual feed accelerating structures. ©, 2015, Editorial Office of High Power Laser and Particle Beams. All right reserved.
类目[WOS]691.2 Materials Handling Methods ; 701.1 Electricity: Basic Concepts and Phenomena ; 714.3 Waveguides ; 744.5 Free Electron Lasers ; 932.1.1 Particle Accelerators
收录类别EI
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228927
专题中国科学院高能物理研究所_加速器中心_期刊论文
中国科学院高能物理研究所_加速器中心
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GB/T 7714
Hou M,Song NB,He X,et al. S-band J-type waveguide feeding accelerating structure for free electron laser[J]. HIGH POWER LASER AND PARTICLE BEAMS,2015,27(4):45109.
APA 侯汨.,宋迺斌.,贺祥.,赵风利.,裴士伦.,...&Xiangjian.(2015).S-band J-type waveguide feeding accelerating structure for free electron laser.HIGH POWER LASER AND PARTICLE BEAMS,27(4),45109.
MLA 侯汨,et al."S-band J-type waveguide feeding accelerating structure for free electron laser".HIGH POWER LASER AND PARTICLE BEAMS 27.4(2015):45109.
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