Targetry for a μ+μ- collider

The requirement for high luminosity in a μ⁺μ^- collider leads one to conclude that a prodigious source of pions is needed followed by an efficient capture/decay channel. Significant targetry issues are raised by these demands. Among these are: i) the best target configuration to tolerate a high-rep rate, high-power proton beam (~10¹⁴ ppp at 15 Hz), ii) the pion spectra of the produced pions and iii) the best configuration for maximizing the quantity of captured pions. In this paper, the current thinking of the μ⁺μ^$collider collaboration for solutions to these issues is discussed. In addition, we give a description of the R&D program designed to provide a proof-of-principle for a muon capture system capable of meeting the demands of a future high-luminosity machine