A 200 MeV, 10 mA, Medium Energy High Intensity Proton Accelerator (MEHIPA) is proposed to form the second stage of the Indian ADS programme. The linac consists of a normal conducting 3 MeV Radio Frequency Quadrupole (RFQ) and a 200 MeV superconducting section consisting of three different families of Single Spoke Resonators (SSR-A, SSR-B, and SSR-C). Here we discuss a detailed physics design of MEHIPA, including electro-magnetic design, multipacting analysis, higher-order mode studies, and beam dynamics. We have designed a compact linac, by careful optimization of cavity $\beta$ for the superconducting section. We also performed detailed optimization studies on the linac lattice and transport line parameters, aimed at minimizing the emittance and beam halo. Reliability analysis and error studies were performed on this optimized linac, including various beam, cavity, and magnet parameters, to estimate the operation tolerances, and the results are reported for a maximum emittance growth of 50%.

中文翻译：

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中能高强度质子加速器的设计研究

建议使用200 MeV，10 mA中能高强度质子加速器（MEHIPA）构成印度ADS计划的第二阶段。直线加速器由一个正常传导的3 MeV射频四极（RFQ）和一个200 MeV的超导部分组成，该部分由三个不同的单辐谐振器系列（SSR-A，SSR-B和SSR-C）组成。在这里，我们讨论MEHIPA的详细物理设计，包括电磁设计，多步分析，高阶模态研究和射束动力学。通过精心优化腔体，我们设计了紧凑的直线加速器$\beta$对于超导部分。我们还对直线加速器晶格和传输线参数进行了详细的优化研究，旨在最大程度地降低发射率和束晕。对该优化的直线加速器进行了可靠性分析和误差研究，包括各种射束，谐振腔和磁体参数，以估算操作公差，并报告了最大发射率增长50％的结果。