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TUO1LR02 |
The Design and Beam Dynamics Study for CSNS Linac |
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- H.C. Liu, S. Fu, J. Peng, S. Wang
IHEP, Beijing, People's Republic of China
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The China Spallation Neutron Source (CSNS) linac consists of a 50 keV H− ion source, a 3 MeV RFQ, and an 80 MeV alvarez type DTL. It provides an H− beam of 15 mA peak current with a pulsed beam width about 420 μs and a repetition rate of 25 Hz for injection into the following 1.6 GeV rapid-cycling synchrotron (RCS). The transverse and longitudinal beam optics is introduced. The original design scheme is optimized based on the end-to-end simulation. Besides beam dynamics, the commissioning plan for linac is also presented, including the commissioning correlated parameters, beam instrumentation used in commissioning, the goal at different commissioning stages.
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Slides TUO1LR02 [6.961 MB]
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WEO3AB03 |
The Design and Construction Status of Injection and Extraction System for CSNS/RCS |
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- S. Wang
IHEP, Beijing, People's Republic of China
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The China Spallation Neutron Source (CSNS) accelerator consists of an 80MeV H− linac and a 1.6GeV proton Rapid Cycling Synchrotron(RCS), and it provides 100 kW beam to neutron target. The injection and extraction systems play an important role in the RCS. The H− stripping painting and single turn extraction are adopted in the RCS. Now the hardware of the injection and extraction systems are being fabricated and tested. The design of the injection system and extraction system of the RCS are introduced, including some simulation study and optimization. The construction status of hardware is also described, including the test results of hardware of the injection and extraction systems.
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Slides WEO3AB03 [5.085 MB]
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WEO4AB03 |
Study on the Beam Distribution and Painting Range during the Injection Process for CSNS/RCS |
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- M.Y. Huang, N. Huang, J. Qiu, S. Wang
IHEP, Beijing, People's Republic of China
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Funding: Work supported by National Natural Science Foundation of China (11205185, 11175020, 11175193)
In this paper, firstly, we studied the beam distribution during the injection process for the Rapid Cycling Synchrotron of the China Spallation Neutron Source (CSNS/RCS). The injection processes with and without the space charge were both simulated by the code ORBIT, and the beam distribution of each turn can be obtained. Then, the particle motion during the injection process can be studied and the beam aperture which was required can be obtained. Secondly, the injection processes for different transverse phase space painting ranges were discussed and simulated. Then, the optimized painting range for CSNS/RCS can be obtained.
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Slides WEO4AB03 [0.977 MB]
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THO2AB03 |
Study on Impedance for the Extraction Kicker in CSNS/RCS |
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- L. Huang, Y.D. Liu, S. Wang
IHEP, Beijing, People's Republic of China
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Funding: Supported by National Natural Science Foundation of China (11175193, 11275221) # huangls@ihep.ac.cn
The fast extraction kicker system is the main source of impedance in China Spallation Neutron Source Rapid Cycling Synchrotron. Longitudinal and transverse impedance of a fast kicker has been measured for the design and development of the accelerator. The conventional wire method and the improved wire method are employed in the bench measurement.
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Slides THO2AB03 [2.995 MB]
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FRO1AU04 |
Working Group D Summary |
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- S.S. Gilardoni
CERN, Geneva, Switzerland
- M.A. Plum
ORNL, Oak Ridge, Tennessee, USA
- S. Wang
IHEP, Beijing, People's Republic of China
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Summary of Working Group D
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Slides FRO1AU04 [1.486 MB]
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