聚束

This paper has analysed the relation of the parameters of single buncher systemsand has calculated the electrical tolerance deviations of buncher and preinjector, andthe paper also has discussed the effect of the electrical errors to the energy spectrumof Linac beam.

本文分析了单聚束器系统的参数关系，计算了预注入器和聚束器的电公差，并讨论了这些公差对直线加速器束流能谱的影响。

SHBs' bunching voltage and bunching drift distance, prebuncher and buncher's phase and acceleration gradient, and solenoid field profile have been studied.

对SHB的聚束电压和漂移距离、预聚束器与聚束器的相位和加速梯度、螺线管磁场的形状等都进行了细致的研究和优化，并讨论了聚束器出口 10ps束长内电荷量的极限值。

SHBs' bunching voltage and bunching drift distance, prebuncher and buncher's phase and acceleration gradient, and solenoid field profile have been studied. The bunch charge limitation for 10ps bunch length at the buncher exit is also investigated.

对SHB 的聚束电压和漂移距离、预聚束器与聚束器的相位和加速梯度、螺线管磁场的形状等都进行了细致的研究和优化，并讨论了聚束器出口10ps束长内电荷量的极限值。

Base frequency of the buncher is 6 MHz, it can be used in bunching light ion beams as p or D, as well as heavy ion beams up to Cs, with beam utilization efficiency of 50 %—60 %, and pulsed beam width of light ions less than 1 ns.

聚束器基频为6MHz，可以对质子、氘直至铯等所有离子束进行脉冲聚束，束流利用效率可达50％—60％，质子等轻离子脉冲束的脉冲时间宽度小于1ns。

The electron beam current measured by the beam current monitor (BCT3) is almost in direct proportion to the induced voltage of the fundamental harmonic. When the parameters of the pre-buncher and buncher are adjusted greatly while the beam current being unchanged, the fifth harmonic signal has a great change, but the fundamental signal changes gently. The test results are all in good agreement with the theoretic analysis.

根据不同时刻的记录，基频腔峰值电压与束流流强探测器BCT3所测流强值近似成正比关系；当大幅改变预聚束器和聚束器参数而束流流强不变时，反映聚束质量的五倍频腔信号也随之大幅改变，而反映流强信号的基频腔信号则变化不大，这些试验结果与理论分析完全一致。

The measured bunch length ranging between 1.4 mm and 2.0 mm agrees well with the theoretic calculation of 1.5 mm.The electron beam current measured by the beam current monitor(BCT3) is almost in direct proportion to the induced voltage of the fundamental harmonic.When the parameters of the pre-buncher and buncher are adjusted greatly while the beam current ...

根据不同时刻的记录，基频腔峰值电压与束流流强探测器BCT3所测流强值近似成正比关系；当大幅改变预聚束器和聚束器参数而束流流强不变时，反映聚束质量的五倍频腔信号也随之大幅改变，而反映流强信号的基频腔信号则变化不大，这些试验结果与理论分析完全一致。

To ensure the length of buncher , maximum voltage of beam bunching , the maximum amplitude of the scan voltage amplitude with bunch method of sine wave bunching klystron .

采用正弦波速调管聚束理论计算确定聚束筒长度、聚束电压最大幅值、扫描电压最大幅值等主要特性参数。

The electron beam current measured by the beam current monitor(BCT3) is almost in direct proportion to the induced voltage of the fundamental harmonic.When the parameters of the pre-buncher and buncher are adjusted greatly while the beam current being unchanged,the fifth harmonic signal has a great change,but the fundamental signal changes gently.

根据不同时刻的记录，基频腔峰值电压与束流流强探测器BCT3所测流强值近似成正比关系；当大幅改变预聚束器和聚束器参数而束流流强不变时，反映聚束质量的五倍频腔信号也随之大幅改变，而反映流强信号的基频腔信号则变化不大，这些试验结果与理论分析完全一致。

The BEPCⅡ future pre-injector consists of a thermionic gun followed by two subharmonic bunchers, a travelling wave prebuncher and a travelling wave buncher.

BEPCⅡ未来的预注入器由热阴极电子枪、两个次谐波聚束器、行波预聚束器以及行波聚束器组成。

The accelerator physics problems of the upgrading program were discussed here, which include the space charge effect on the very low energy beam line, non-parity acceleration at the injector cyclotron SFC, longitudinal match between two cyclotrons, strong magnetic field leakage afluence on the beam transfer at low and very low energy, residual first harmonic magnetic field in the main cyclotron SSC injection region, the low efficiency and beam quality of heavy ions after through stripper etc.

主要问题有：超低能束流传输的空间电荷效应的影响，扇聚焦回旋加速器SFC高频加速电压不对称对束流轨道的影响，用半频聚束的方式补偿两台回旋加速器的纵向不匹配，前束线上聚束器的工作模式的选取，强杂散磁场对超低能和低能束流传输的影响，分离扇回旋加速器SSC注入区过垫补磁场对注入束流轨道的影响，SFC和SSC的单圈引出，重离子通过剥离膜后的束流损失和束流品质的变坏等。

The physiology of the skin machine body for the sake of the environment in the maintenance stability, but eject a body metabolism creation of metabolism thing BE'grease', summer perspire many various skin disease light or good, autumn perspire little metabolism thing metabolism don't go out, various skin disease made, this be the skin machine body of various burning disease.

皮肤机体的生理为了维持内环境稳定，而排出身体代谢产生的代谢物是'油泥'，夏天出汗多各种皮肤病就轻或好了，秋天出汗少代谢物代谢不出去，各种皮肤病就犯了，这就是皮肤机体的各种炎症。

If I had anything tender in me, I shot it dead.

如果我有什么招标的话，我枪死亡。