Advanced Search

DONG Ziqiang, LI Peng, YANG Jiancheng, LIU Jie, XIE Wenjun, RUAN Shuang, WANG Geng, WANG Kedong, YAO Liping, CAI Fucheng. Simulation Results of Loss Distribution of U36+ due to Charge-exchange Process[J]. Nuclear Physics Review, 2019, 36(1): 49-54. doi: 10.11804/NuclPhysRev.36.01.049
Citation: DONG Ziqiang, LI Peng, YANG Jiancheng, LIU Jie, XIE Wenjun, RUAN Shuang, WANG Geng, WANG Kedong, YAO Liping, CAI Fucheng. Simulation Results of Loss Distribution of U36+ due to Charge-exchange Process[J]. Nuclear Physics Review, 2019, 36(1): 49-54. doi: 10.11804/NuclPhysRev.36.01.049

Simulation Results of Loss Distribution of U36+ due to Charge-exchange Process

doi: 10.11804/NuclPhysRev.36.01.049
Funds:  National Natural Science Foundation of China (11675235); Special Funding for Introduced Innovative R&D Team of Guangdong(2016ZT06G73)
  • Received Date: 2018-07-19
  • Rev Recd Date: 2018-08-09
  • Publish Date: 2019-03-20
  • During heavy ion accelerator operation, the charge exchange effect between ions and residual gas molecules is the key factor to influence beam lifetime. The charge exchange process has ions lost on the wall and leads to a dynamical vacuum change, which will seriously affect the accelerator operation and reduce the extraction beam intensity. The Institute of Modern Physics' future project, called High Intensity heavy ion Accelerator Facility (HIAF), will be built in Huizhou city, Guangdong Province, China. The Booster Ring (BRing) will provide 2×11 ppp 238U35+ for nuclear physics experiments. This article studies the track of particle U36+ before impacting on the wall, which is the reference particle U35+ losing one electron, and gets the U36+ loss distribution along the BRing. The simulation result shows that U36+ will be influenced seriously by dispersion elements, and will be lost in the drift sections after the dipoles. Collimators made out of materials with low desorption will be installed in the particles lost positions. The collimator efficiency after optimization can be larger than 95%. It also shows BRing average pressure change and beam intensity change between collimators on and off. The result points out that the BRing average pressure change will be less than 10% with collimators on, which makes BRing operate stably.
  • [1] YANG Jiancheng, XIA Jiawen, XIAO Guoqing, et al. Nucl Instr and Meth B, 2013, 317:263.
    [2] GROBNER Ö, CALDER R S. IEEE Transactions on Nuclear Science, 1973, 20(3):760.
    [3] J BOSSER, M CHANEL, C HILL, et al. Part Accel, 1999, 63(CERN-PS-99-033-DI):171.
    [4] ZHANG S Y, AHRENS L A. Gold beam losses at the AGS Booster injection[C]//Particle Accelerator Conference, IEEE, 1999, 5:3294.
    [5] KRAMER Ä, BOINE-FRANKENHEIM O, MUSTAFIN E, et al. Measurement and Calculation of U28+ Beam Lifetime in SIS[C]//Proc of EPAC. 2002, 2547.
    [6] LI Peng, YUAN Youjin, YANG Jiancheng, et al. Physical Review Special Topics-Accelerators and Beams, 2014, 17(8):084201.
    [7] MAHNER E. CERN Report No LHC/VAC-TN-2002-04, 2002.
    [8] MAHNER E, HANSEN J, LAURENT J M, et al. Physical Review Special Topics-Accelerators and Beams, 2003, 6(1):013201.
    [9] OMET C, P SPILLER, STADLMANN J. Simulation of Dynamic Vacuum Induced Beam Loss[C]//These Proceedings. 2006.
    [10] SCHLACHTER A S, STEARNS J W, GRAHAM W G, et al. Physical Review A, 1983, 27(6):3372.
    [11] FRANZKE B. IEEE Transactions on Nuclear Science, 1981, 28(3):2116.
    [12] BOSSER J, CHANEL M, HILL C, et al. Part Accel, 1999, 63(CERN-PS-99-033-DI):171.
    [13] MADSEN N. PS/DI Note, 1999:99.
    [14] OMET C, SPILLER P, STADLMANN J, et al. New Journal of Physics, 2006, 8(11):284.
    [15] LEE S Y. Accelerator Physics[M]. Singapore:World Scientific Publishing Company, 2011:129.
    [16] DONG Ziqiang, LI Peng, YANG Jiancheng, et al. Nucl Instr and Meth A, 2017, 870:73.
  • 加载中
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Article Metrics

Article views(1133) PDF downloads(67) Cited by()

Proportional views

Simulation Results of Loss Distribution of U36+ due to Charge-exchange Process

doi: 10.11804/NuclPhysRev.36.01.049
Funds:  National Natural Science Foundation of China (11675235); Special Funding for Introduced Innovative R&D Team of Guangdong(2016ZT06G73)

Abstract: During heavy ion accelerator operation, the charge exchange effect between ions and residual gas molecules is the key factor to influence beam lifetime. The charge exchange process has ions lost on the wall and leads to a dynamical vacuum change, which will seriously affect the accelerator operation and reduce the extraction beam intensity. The Institute of Modern Physics' future project, called High Intensity heavy ion Accelerator Facility (HIAF), will be built in Huizhou city, Guangdong Province, China. The Booster Ring (BRing) will provide 2×11 ppp 238U35+ for nuclear physics experiments. This article studies the track of particle U36+ before impacting on the wall, which is the reference particle U35+ losing one electron, and gets the U36+ loss distribution along the BRing. The simulation result shows that U36+ will be influenced seriously by dispersion elements, and will be lost in the drift sections after the dipoles. Collimators made out of materials with low desorption will be installed in the particles lost positions. The collimator efficiency after optimization can be larger than 95%. It also shows BRing average pressure change and beam intensity change between collimators on and off. The result points out that the BRing average pressure change will be less than 10% with collimators on, which makes BRing operate stably.

DONG Ziqiang, LI Peng, YANG Jiancheng, LIU Jie, XIE Wenjun, RUAN Shuang, WANG Geng, WANG Kedong, YAO Liping, CAI Fucheng. Simulation Results of Loss Distribution of U36+ due to Charge-exchange Process[J]. Nuclear Physics Review, 2019, 36(1): 49-54. doi: 10.11804/NuclPhysRev.36.01.049
Citation: DONG Ziqiang, LI Peng, YANG Jiancheng, LIU Jie, XIE Wenjun, RUAN Shuang, WANG Geng, WANG Kedong, YAO Liping, CAI Fucheng. Simulation Results of Loss Distribution of U36+ due to Charge-exchange Process[J]. Nuclear Physics Review, 2019, 36(1): 49-54. doi: 10.11804/NuclPhysRev.36.01.049
Reference (16)

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return