Beam optics studies and lattice design of the 1 GeV H- injector linac for ISNS

Add time:07/28/2019    Source:sciencedirect.com

In this paper, we discuss a general methodology to make a compact design of the 1 GeV, 1 MW H- superconducting injector linac for the Indian Spallation Neutron Source (ISNS) project, by following the non-equipartitioned design approach, where the emittance growth of the beam is controlled through appropriate adjustment of the strength of lattice elements. Analytical studies of the stability of mismatched envelope oscillations have been performed for a three dimensional beam bunch, which, to the best of our knowledge, is not reported earlier. A rigorous beam halo analysis based on Particle Core Model (PCM) is also presented, considering the actual periodicity of the ISNS lattice, in order to estimate the maximum radial extent of the halo particle.

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