BEPCⅡ直线加速器的双脉冲加速研究.pdfVIP

　第 19 卷 　第 9 期 强 激 光 与 粒 子 束 Vol . 19 ,No . 9 　 　2007 年 9 月 H I GH PO W ER L A SER AND PA R TICL E B EA M S Sep . ,2007 　 Article ID : 　100 14322 (2007) Twopul se acceleration f or BEPC Ⅱinjector l inac P EI Shilun , 　WAN G Shuhon g , 　L IU Weibin ( ) I ns t it ute of H i g h Energy P hy s ics , Chi nese A ca demy of S ciences , P. O. B ox 9 18 8 , B eij i ng 100049 , Chi na 　　Abstract : 　In or der to double t he inj ection rat e of po sit ron beam from t he linac to t he storage ring of B EPC Ⅱ, a twop ul se generation and acceleration scheme ha s been p ropo sed . The twop ul se simulation by p ro gram s including L IA R , PA RM EL A , E GUN and TRAN SPOR T i s described fir st and t he met ho d i s applied in t he beam dynamics st udies of B EPC Ⅱlinac . The exp eriment of twop ul se acceleration wa s p erformed in B EPC Ⅱ linac and some p reliminary result s are obt ained , which p rovides a goo d reference for furt her up grading of B EPC Ⅱinj ector linac . 　　Key words : 　Twop ul se ; 　B EPC Ⅱlinac ; 　Beam dynamics ; 　N umerical simulation 　　CLC number : 　TL 50 1 ; 　TL 53 　　　　Document code : 　A 　　In or der to double t he po sit ron inj ectio n rat e f ro m t he linac to t he storage ring , a t wop ul se acceleration scheme (t wo macro beam p ul se