Beam dynamics studies on the 100 MeV/100 kWelectron linear accelerator for NSCKIPT neutron source

PEI Shi-Lun; CHI Yun-Long; WANG Shu-Hong; PEI Guo-Xi; ZHOU Zu-Sheng; HOU Mi; Mykola Ayzatskiy; Ivan Karnaukhov; Volodymyr Kushnir; Viktor Mytrochenko; Andrey Zelinsky

doi:10.1088/1674-1137/36/7/015

Chinese Physics C> 2012, Vol. 36> Issue(7) : 653-660 DOI: 10.1088/1674-1137/36/7/015

Beam dynamics studies on the 100 MeV/100 kWelectron linear accelerator for NSCKIPT neutron source

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Abstract：
We designed a 100 MeV/100 kW electron linear accelerator for NSC KIPT, which will be used to drive a neutron source on the basis of subcritical assembly. Beam dynamics studies have been conducted to reach the design requirements (E=100 MeV, P=100 kW, dE/E<1% for 99% particles). In this paper, we will present the progress of the design and the dynamic simulation results. For high intensity and long beam pulse linear accelerators, the BBU effect is one big issue; special care has been taken in the accelerating structure design. To satisfy the energy spread requirement at the linac exit, the particles with large energy difference from the synchronous particle should be eliminated at a low energy stage to ease the design of the collimation system and radiation shielding. A dispersion free chicane with 4 bending magnets is introduced downstream of the 1st accelerating section; the unwanted particles will be collimated there.

References

[1]

CHI Yun-Long et al. Design Report on the NSC KIPT Electron Linear Accelerator. Version 2, IHEP, 2011.8[2] ANSYS is a Trademark of SAS Inc. www.ansys.com[3] PEI Shi-Lun et al. RF-Thermal-Structural-RF Coupled Analysis on the Travelling Wave Disk-loaded Accelerating Structure. Chin. Phys. C (HEP NP), 2012, 36(6): 555--560[4] Herrmannsfeldt W B. Egun-An Electron Optics and Gun Design Program. SLAC-331, UC-28, (A), 1998.10[5] Young L M et al. Parmela. LA-UR-96-1835. Los Alamos National Laboratory, Revised July 19, 2005[6] The MAFIA collaboration. MAFIA User Manual version 4.106. Germany: CST Inc., 2000

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PEI Shi-Lun, CHI Yun-Long, WANG Shu-Hong, PEI Guo-Xi, ZHOU Zu-Sheng, HOU Mi, Mykola Ayzatskiy, Ivan Karnaukhov, Volodymyr Kushnir, Viktor Mytrochenko and Andrey Zelinsky. Beam dynamics studies on the 100 MeV/100 kWelectron linear accelerator for NSCKIPT neutron source[J]. Chinese Physics C, 2012, 36(7): 653-660. doi: 10.1088/1674-1137/36/7/015

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Received: 2011-08-26
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Beam dynamics studies on the 100 MeV/100 kWelectron linear accelerator for NSCKIPT neutron source

Corresponding author: PEI Shi-Lun,

Received Date: 2011-08-26
Accepted Date: 1900-01-01
Available Online: 2012-07-05

Abstract: We designed a 100 MeV/100 kW electron linear accelerator for NSC KIPT, which will be used to drive a neutron source on the basis of subcritical assembly. Beam dynamics studies have been conducted to reach the design requirements (E=100 MeV, P=100 kW, dE/E<1% for 99% particles). In this paper, we will present the progress of the design and the dynamic simulation results. For high intensity and long beam pulse linear accelerators, the BBU effect is one big issue; special care has been taken in the accelerating structure design. To satisfy the energy spread requirement at the linac exit, the particles with large energy difference from the synchronous particle should be eliminated at a low energy stage to ease the design of the collimation system and radiation shielding. A dispersion free chicane with 4 bending magnets is introduced downstream of the 1st accelerating section; the unwanted particles will be collimated there.