%0 Journal Article %T Report on the Workshop on Accelerator R&D for Ultimate Storage Rings %A Robert Hettel %A Qing Qin %J Physics %D 2013 %I arXiv %X This report summaries the workshop on accelerator R&D for ultimate storage ring, held in Huairou, Beijing, Oct. 30 to Nov. 1, 2012. %U http://arxiv.org/abs/1303.4757v1