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Abstract
An accelerator-driven subcritical system (ADS) program was launched in China in 2011, which aims to design and build an ADS demonstration facility with the capability of more than 1000 MW thermal power in multiple phases lasting about 20 years. The driver linac is defined to be 1.5 GeV in energy, 10 mA in current and in cw operation mode. To meet the extremely high reliability and availability, the linac is designed with much installed margin and fault tolerance, including hot-spare injectors and local compensation method for key element failures. The accelerator complex consists of two parallel 10-MeV injectors, a joint medium-energy beam transport line, a main linac, and a high-energy beam transport line. The superconducting acceleration structures are employed except for the radio frequency quadrupole accelerators (RFQs) which are at room temperature. The general design considerations and the beam dynamics design of the driver linac complex are presented here.
Highlights
The China Accelerator Driven subcritical System (C-accelerator-driven subcritical system (ADS)) project is a strategic plan to solve the nuclear waste problem and the resource problem for nuclear power plants in China
The China Accelerator Driven subcritical System (C-ADS) accelerator complex is a large cw proton linac in several sections and uses superconducting acceleration structures except the radio frequency quadrupole accelerators (RFQs), which is under development in collaboration at Institute of High Energy Physics (IHEP) and Institute of Modern Physics (IMP)
End-to-end beam dynamics simulations are performed from the input of the RFQ to the end of the linac to verify the matching between each part
Summary
The China Accelerator Driven subcritical System (C-ADS) project is a strategic plan to solve the nuclear waste problem and the resource problem for nuclear power plants in China. It is supported financially by the central government and administrated by the Chinese Academy of Sciences. The C-ADS accelerator complex is a large cw proton linac in several sections and uses superconducting acceleration structures except the radio frequency quadrupole accelerators (RFQs), which is under development in collaboration at Institute of High Energy Physics (IHEP) and Institute of Modern Physics (IMP). Two different designs employing different rf frequencies are pursued for the low-energy part of less than 10 MeV, namely, injectors in the technical developing phase, with 325 MHz for Injector Scheme-I and 162.5 MHz for Injector Scheme-II. We will focus on the physical design of Injector Scheme-I and the associated main linac design, and the details about the design of Injector Scheme-II and the associated main linac can be found in Refs. [2,3,4]
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