Optimization Studies on BEPCⅡ Future Pre-injector with Two SHBs

PEI Shi-Lun; WANG Shu-Hong; GU Peng-Da; LIU Bo

Chinese Physics C> 2004, Vol. 28> Issue(5) : 549-554

Optimization Studies on BEPCⅡ Future Pre-injector with Two SHBs

Institute of High Energy Physics,CAS,Beijing 100039,China

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Abstract：
The BEPCⅡ future pre-injector consists of a thermionic gun followed by two subharmonic bunchers (SHB), a travelling wave prebuncher and a travelling wave buncher. All components downstream of the gun are immersed in a solenoid field for transverse focusing. Beam dynamics simulation and optimization have been carried out with programs PARMELA and EGUN. 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.

References

[1]

. PEI Guo-Xi et al. Overview of BEPCⅡ- Linac Upgrade. Preliminary Design Report of BEPC-Linac, IHEP-BEPCⅡ-SB-03, 2002. 62. WANG Shu-Hong, WANG Jiu-Qing, YE Qiang et al. High Energy Phys. and Nucl. Phys. , 2002, 26( 12) : 1302(in Chinese)(王书鸿,王九庆,叶强等.高能物理与核物理,2002,26(12):1302)3. WANG Shu-.Hong, GU Peng-Da, WANG Jiu-Qing et al . High Energy Phys. and Nucl. Phys. , 2003, 27(2) : 173(in Chinese)(王书鸿,顾鹏达,王九庆等.高能物理与核物理,2003,27(2):173)4. GOU Wei-Ping. Physical Design of BEPCⅡ - Positron Source. Master Thesis, IHEP, 2001 (in Chinese)(苟卫平.BEPCⅡ正电子源物理设计.硕士论文,中国科学院高能物理研究所,2001)5. Yeremian A D, Miller R H. SLAC. Handbook of Accelerator Physicsand Engineering. Ed. Chao A W, Tigner M. World Scient ific, 1999.4196. Young L M et al. Parmela. LA-UR-96-1835, Los Alamos National Laboratory, Revised July 30, 20027. Herrmannsfeldt W B. Egun-An Electron Opt ics and Gun Design Program. SLAC-331, UC-28, ( A) , 1998. 108. Abe I, Akasaka N, Akemoto M et al. Nuclear Instruments and Methodsin Physics Research, 2003, A 499: 167 ! 1909. Pisent A, Rinolfi L. Proceedings of the bunching workshop. Ed. RinolfiL. CERN-PS 92-07 (LP) , 1990, 9910. ZHOU Feng, Braun H. Updated Beam Dynamics for a CTF3 Inject or.CTF3 Tech.-Note 2000-015-Inject or, 2000. 911. Yeremian A D, Miller R H. Micro Bunches Workshop. Ed. Blum E B,Dienes M, Murphy J B. AIP Press, 1995, 76

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PEI Shi-Lun, WANG Shu-Hong, GU Peng-Da and LIU Bo. Optimization Studies on BEPCⅡ Future Pre-injector with Two SHBs[J]. Chinese Physics C, 2004, 28(5): 549-554.

PEI Shi-Lun, WANG Shu-Hong, GU Peng-Da and LIU Bo. Optimization Studies on BEPCⅡ Future Pre-injector with Two SHBs[J]. Chinese Physics C, 2004, 28(5): 549-554. shu

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Received: 2003-09-17
Revised: 1900-01-01

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