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Volume 32 Issue S1
Nov.  2015
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WU Qi, JIA Huan, MA Hongyi, ZHANG Wenhui, FANG Xing, YANG Yao, MA Baohua, WANG Hui, SUN Liangting, HE Yuan, ZHAO Hongwei. Research of Emittance Matching on the Low Energy Beam Transport Line for ADS Proton LINAC[J]. Nuclear Physics Review, 2015, 32(S1): 5-9. doi: 10.11804/NuclPhysRev.32.S1.5
Citation: WU Qi, JIA Huan, MA Hongyi, ZHANG Wenhui, FANG Xing, YANG Yao, MA Baohua, WANG Hui, SUN Liangting, HE Yuan, ZHAO Hongwei. Research of Emittance Matching on the Low Energy Beam Transport Line for ADS Proton LINAC[J]. Nuclear Physics Review, 2015, 32(S1): 5-9. doi: 10.11804/NuclPhysRev.32.S1.5

Research of Emittance Matching on the Low Energy Beam Transport Line for ADS Proton LINAC

doi: 10.11804/NuclPhysRev.32.S1.5
  • Publish Date: 2015-11-20
  • An intense ECR proton source and low energy beam transport (LEBT) system have been developed for the proton Linac of China Initiative Accelerator Driven Sub-Critical system (C-ADS). The proton source can deliver stable 35 keV proton beams to the entrances of the downstream Radio-Frequency Quadrupole (RFQ). The optics mismatching between the LEBT sections is the main reason that leads to the beam loss in the intense RFQ. Optimum beam matching between the different accelerator sections is one of the key points to reduce the beam losses and emittance growth. For CI-ADS driver Linac system, beam loss at continuous wave operation mode leads to thermal deformation and sparks in the RFQ, and thus has big impact to the reliability of RFQ. Therefore, this paper was mainly studied how to achieve good beam matching and reduce beam losses between LEBT and RFQ. Experiments study show that beam emittance at the LEBT exit is less than 0.2 mmmrad when the 10 mA/35 keV was extracted from the LEBT. The emittance meets the matching requirement of the RFQ entrance when the currents of solenoids lens were sets to 210 and 270 A.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Research of Emittance Matching on the Low Energy Beam Transport Line for ADS Proton LINAC

doi: 10.11804/NuclPhysRev.32.S1.5

Abstract: An intense ECR proton source and low energy beam transport (LEBT) system have been developed for the proton Linac of China Initiative Accelerator Driven Sub-Critical system (C-ADS). The proton source can deliver stable 35 keV proton beams to the entrances of the downstream Radio-Frequency Quadrupole (RFQ). The optics mismatching between the LEBT sections is the main reason that leads to the beam loss in the intense RFQ. Optimum beam matching between the different accelerator sections is one of the key points to reduce the beam losses and emittance growth. For CI-ADS driver Linac system, beam loss at continuous wave operation mode leads to thermal deformation and sparks in the RFQ, and thus has big impact to the reliability of RFQ. Therefore, this paper was mainly studied how to achieve good beam matching and reduce beam losses between LEBT and RFQ. Experiments study show that beam emittance at the LEBT exit is less than 0.2 mmmrad when the 10 mA/35 keV was extracted from the LEBT. The emittance meets the matching requirement of the RFQ entrance when the currents of solenoids lens were sets to 210 and 270 A.

WU Qi, JIA Huan, MA Hongyi, ZHANG Wenhui, FANG Xing, YANG Yao, MA Baohua, WANG Hui, SUN Liangting, HE Yuan, ZHAO Hongwei. Research of Emittance Matching on the Low Energy Beam Transport Line for ADS Proton LINAC[J]. Nuclear Physics Review, 2015, 32(S1): 5-9. doi: 10.11804/NuclPhysRev.32.S1.5
Citation: WU Qi, JIA Huan, MA Hongyi, ZHANG Wenhui, FANG Xing, YANG Yao, MA Baohua, WANG Hui, SUN Liangting, HE Yuan, ZHAO Hongwei. Research of Emittance Matching on the Low Energy Beam Transport Line for ADS Proton LINAC[J]. Nuclear Physics Review, 2015, 32(S1): 5-9. doi: 10.11804/NuclPhysRev.32.S1.5

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