Effects of injection beam parameters and foil scattering for CSNS/RCS

Huang, Ming-Yang; Wang, Sheng; Qiu, Jing; Wang, Na; Shou, Xu

doi:10.1088/1674-1137/37/6/067001

Cited by 19 publications

(19 citation statements)

References 13 publications

(14 reference statements)

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“…Those magnets traverse a painting orbit during injection [14]. A painting injection method is an ordinary way to reduce the space charge effect in a synchrotron [15][16][17][18]. The voltage of the power supply was increased by about twice according to increment of the Linac acceleration energy.…”

Section: Rcsmentioning

confidence: 99%

Path to 1-MW at J-PARC Rapid Cycling Synchrotron

Yamamoto¹,

Yamamoto²,

Morishita³

et al. 2017

ujpa

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The accelerator system at Japan Proton Accelerator Research Complex (J-PARC) has been operational since May 2008 and has mainly been used to perform physics experiments. The accelerator system consists of a Linac, a Rapid Cycling Synchrotron (RCS), and a Main Ring Synchrotron. The originally designed RCS injection energy is 400MeV, but the first operation started at 181MeV. New acceleration cavities were installed in J-PARC Linac during the summer shutdown of 2013, and user operation by the Material and Life science Facility (MLF) at the injection energy of 400MeV was started from February 2014. Post beam commissioning of 400MeV injection energy, beam loss was small enough, and we established 300kW continuous operation. Subsequently, the peak current of the Linac was increased from 30mA to 50mA. This upgrade enabled us to try 1-MW beam acceleration. Finally, after some additional improvements, we successfully accelerated 1-MW equivalent protons.

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Section: Rcsmentioning

confidence: 99%

Path to 1-MW at J-PARC Rapid Cycling Synchrotron

Yamamoto¹,

Yamamoto²,

Morishita³

et al. 2017

ujpa

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“…In CSNS, the magnet system mainly consists of the RCS ring [4] and the transport line magnets. Tables 1 and 2 show the principal type and number of magnets in RCS and transport line.…”

Section: Magnets Of Csnsmentioning

confidence: 99%

Design and performance of Hall probe measurement system in CSNS

Wen

Chen

et al. 2017

Radiat Detect Technol Methods

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Background The construction of China Spallation Neutron Source (CSNS) was started in 2011 and will be completed in 2018. The phase I CSNS facility consists of an 80MeV HLinac, a 1.6GeV Proton Rapid Cycling Synchrotron (RCS), two beam transport lines and a target station. Magnets in the RCS and transport lines should be measured before being installed in the tunnel. Method In this paper, a new hall probe measurement system is described. The design and performance of the hall probe measurement system is presented. Conclusions The measurement results meet the design requirements. Some key issues were solved in the process.

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“…In the RCS, the number of protons in one bunch is 7.8×10 12 . They are modeled as macro particles with a smaller number of 2×10 5 for an ORBIT instance.…”

Section: Implementation Of the Simulation Codementioning

confidence: 99%

Optimization of the collimation system for CSNS/RCS with the robust conjugate direction search algorithm

Jiao

Huang

et al. 2016

Chinese Phys. C

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Abstract:The Robust Conjugate Direction Search (RCDS) method is used to optimize the collimation system for the Rapid Cycling Synchrotron (RCS) of the China Spallation Neutron Source (CSNS). The parameters of secondary collimators are optimized for a better performance of the collimation system. To improve the efficiency of the optimization, the Objective Ring Beam Injection and Tracking (ORBIT) parallel module combined with MATLAB parallel computing is used, which can run multiple ORBIT instances simultaneously. This study presents a way to find an optimal parameter combination of the secondary collimators for a machine model in preparation for CSNS/RCS commissioning.

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Effects of injection beam parameters and foil scattering for CSNS/RCS

Cited by 19 publications

References 13 publications

Path to 1-MW at J-PARC Rapid Cycling Synchrotron

Path to 1-MW at J-PARC Rapid Cycling Synchrotron

Design and performance of Hall probe measurement system in CSNS

Optimization of the collimation system for CSNS/RCS with the robust conjugate direction search algorithm

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