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混合型波荡器
相关语句
  hybrid undulator
     RESEARCH OF A HYBRID UNDULATOR
     混合型波荡器的研制
短句来源
     Optimized design considerations for hybrid undulator
     混合型波荡器的3维优化
短句来源
     In this paper, the design investigation and magnetic field measurement of a 10period hybrid undulator are given.
     用于合肥800MeV电子储存环的永磁波荡器正处于建造中。 本文对波荡器辐射特性及磁铁的设计考虑作了介绍,并报告了10周期混合型波荡器模型的设计、研制与磁场测量结果。
短句来源
  相似匹配句对
     RESEARCH OF A HYBRID UNDULATOR
     混合型波荡器的研制
短句来源
     Optimized design considerations for hybrid undulator
     混合型波荡器的3维优化
短句来源
     (4)Mixed type.
     ④混合型
短句来源
     and 6. mixed.
     (6)混合型
短句来源
     An iron-ring wiggler used in a free-electron laser
     用于自由电子激光器的铁环波荡器
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  hybrid undulator
The requirement that the output should be continuously tuneable over this range leads to the use of a hybrid undulator.
      


In this paper, the design investigation and magnetic field measurement of a 10period hybrid undulator are given.

用于合肥800MeV电子储存环的永磁波荡器正处于建造中。本文对波荡器辐射特性及磁铁的设计考虑作了介绍,并报告了10周期混合型波荡器模型的设计、研制与磁场测量结果。

AbstractOur REC一steel hybrid undulator is 1.5m long and sketched by Fig.1.The length of onemagnetic period is 30mm. The permanent magnets is SmCo_5(2: 1 7).The peak magnetic fieldrequired at 14mm magnetic gap iS 0.3T,which can be easily achieved.Designing works areconcentrating on how to satisfy the requirement of magnetic field quality一the rms field errorshould be less than 1.0% and the deviation of electron beam less than 0.1mm. Using PANDIRA,effects of errors on magnetic field have been analyzed and shown...

AbstractOur REC一steel hybrid undulator is 1.5m long and sketched by Fig.1.The length of onemagnetic period is 30mm. The permanent magnets is SmCo_5(2: 1 7).The peak magnetic fieldrequired at 14mm magnetic gap iS 0.3T,which can be easily achieved.Designing works areconcentrating on how to satisfy the requirement of magnetic field quality一the rms field errorshould be less than 1.0% and the deviation of electron beam less than 0.1mm. Using PANDIRA,effects of errors on magnetic field have been analyzed and shown in Table 1.The most sensitiveerror is the magnetic gap △g_2. This has been paid attention during designing and constructionof undulator.Using Simulated Annealing(SA)method,200 megnets has been chosen from 400 mangnets toreduce the magnetic field errors resulted from the inhomogeneous of residue magnetization M_x,M_y,M_z of permanent magnets.To minimize the electron trajectory deviation,the cost functionused in SA has been carefully chosen,Fig. 2 shows the electron trajectory calculated before andafter sorting of magnets. In our magnetic field measurement system,a GaAs hall probe is adopted as the sensor(sensitivity 5~20mV/mA·0.1T,effective area 0.1mm × 0.1mm).A photon一electric encoder de-tects the displacement of the probe with the precision 0.005mm. The field acquisition channel con-sist of hall probe, digital volt meter (DVM),GPIB interface bus, the DS一GPIB interface cardand AST一386 micro一computer.The control system form a closed loop. The precision ofthe system is(△B/B_0)_(rms)≤(0,3~1.5) × 10 ̄(-4)(when △B/△z<0.01T/mm)or(△B/B_0)_(rms)≤(1.5~5) × 10 ̄(-4)(when 0.01T/mm<△B/△z<0.06T/mm)。Two methods are used in the adiustment of undulator.At first,the total 100 magneticperiod units are measured.Their positions in undulator are re一arranged using Simulated An-nealing method according to their magnetic field distribution. This has reduced the rms magneticfield errors of undulator to 1.3%。Then iron shimming is adopted to reduee error to a disirablevalue 0.5%,and the electron trajectory deviation is 0.03mm,which are shown on Fig.5.

介绍一台1.5m的混合型波荡器(UNDULATOR)的研制,包括设计、磁块的优化组合、磁场测量系统和磁场调整技术。这台波荡器主要用于中红外自由电子激光的研究,其磁场峰值均方根误差0.5%,磁场导向误差1mT·cm,电子轨迹偏离0.03mm。

The hybrid undulator, is optimized in beam direction based on transverse optimization developed in ESRF. The thickness of the magnet and the pole is optimized at the ratio of 16∶9 for the maximized peak field. The analytical equations for designing the hybrid undulator are listed and discussed. One prototype hybrid undulator with 25mm period length is being constructed with NdFeB magnets and vanadium permendur poles by the optimized results. The magnet gap of the hybrid undulator can be tunable in 10~300mm....

The hybrid undulator, is optimized in beam direction based on transverse optimization developed in ESRF. The thickness of the magnet and the pole is optimized at the ratio of 16∶9 for the maximized peak field. The analytical equations for designing the hybrid undulator are listed and discussed. One prototype hybrid undulator with 25mm period length is being constructed with NdFeB magnets and vanadium permendur poles by the optimized results. The magnet gap of the hybrid undulator can be tunable in 10~300mm. At 10mm magnetic gap, the undulator peak field can reach 0.648T with only the main magnet. It can be enhanced to 0.722T and 0.773T by further adding the side magnet and top magnet. The field resolution is better than 10~(-4)T with 1μm gap tuning system driven by servomotor. All optimization are based on 3-dimensional finite element electromagnetic computation, the Opera3d. The typical technical parameters of the hybrid undulator are listed. The computed induction field in the beam axis and in the middle plane of the hybrid undulator is respectively shown, which illustrates that the optimized configuration has more than 10mm good field region. The field distribution in the pole surface shows that it already reaches saturation with the present NdFeB magnets and vanadium permendur pole technology.

 以波荡器辐射波和共振电子能及混合型波荡器的解析计算为基础,通过3维磁场的有限元计算,在欧洲光源横向优化基础上,给出了同步辐射和自由电子激光用混合型波荡器纵向优化参数,进而给出了用于DUVFEL混合型波荡器的设计计算参数。加侧位和顶部永磁块后,峰值磁场分别提高到0.722T和0 773T,辅助以1μm量级分辨率的磁间隙调节机械系统,磁场分辨率好于10-4T量级。

 
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