Chinese Physics C > 2009, Vol. 33 > Issue(7): 583-589 DOI: 10.1088/1674-1137/33/7/015

Study of the design of CSNS MEBT

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The design of CSNS MEBT has two objectives: (1) to match the beam both in the transversal direction and the longitudinal direction from RFQ into DTL; (2) to further chop the beam into the required time structure asked by RCS. It is very difficult and critical to control well the emittance growth and in the meantime to match and chop the beam. Firstly, the optical design is done and optimized, and the multi-particle simulations show that the maximum emittance growth is successfully controlled within 14%. Secondly, based on the different beam envelopes obtained by TRACE-3D and PARMELA, the least deflecting angle of the chopper is determined by TRACE-3D. At last, the field of steering magnet is determined through simulations.

References

[1]

. FANG S X, FU S N et al. J. of the Korean Phys. Soc., 2006,48(4): 697-7022. WEI J, FANG S X et al. J. Korean Phys., 2007, 50(5):1373-13773. Stamples J, Oshatz D et al. Proc. of LINAC2000. 250-2524. FU S N, Kato T. Nucl. Instrum. Methods A, 2001, 457:423-4375. Kurennoy S S, Power J F. Proc. of LINAC98. 1004-10066. FU S N, Kato T. Nucl. Instrum. Methods A, 2000, 440:296-3067. Crandall K R, Rusthoi D P. Los Alamos Report LAUR-97-8868. Ryne R (ed.). Proc. of CAP.93. AIP Conference Proceed-ings 297. 19939. LIU H C, OUYANG H F. Chinese Physics C (HEP NP)2008, 32(4): 280-284

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OUYANG Hua-Fu, LIU Hua-Chang and FU Shi-Nian. Study of the design of CSNS MEBT[J]. Chinese Physics C, 2009, 33(7): 583-589. doi: 10.1088/1674-1137/33/7/015

OUYANG Hua-Fu, LIU Hua-Chang and FU Shi-Nian. Study of the design of CSNS MEBT[J]. Chinese Physics C, 2009, 33(7): 583-589. doi:10.1088/1674-1137/33/7/015 shu

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Received: 2008-09-28
Revised: 2009-01-08

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Study of the design of CSNS MEBT

Corresponding author:OUYANG Hua-Fu,

Received Date:2008-09-28

Accepted Date:2009-01-08

Available Online:2009-07-05

Abstract:

The design of CSNS MEBT has two objectives: (1) to match the beam both in the transversal direction and the longitudinal direction from RFQ into DTL; (2) to further chop the beam into the required time structure asked by RCS. It is very difficult and critical to control well the emittance growth and in the meantime to match and chop the beam. Firstly, the optical design is done and optimized, and the multi-particle simulations show that the maximum emittance growth is successfully controlled within 14%. Secondly, based on the different beam envelopes obtained by TRACE-3D and PARMELA, the least deflecting angle of the chopper is determined by TRACE-3D. At last, the field of steering magnet is determined through simulations.

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Study of the design of CSNS MEBT

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通讯作者:陈斌, bchen63@163.com

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