Siegbahn, Kai, Royal Institute of Technology, Stockholm, to R.R.W., C. U., re planned synchrotron, requests information on size of building needed, precautions for radiation damage and "fundaments" for machine, comparison of 4 MeV or 9 MeV linear electron accelerator to ironfree betatron ~5 MeV [tls]; reply, 9/8/1953 [cc], 8/27/1953

Siegbahn, Kai, Royal Institute of Technology, Stockholm, to R.R.W., C. U., re planned synchrotron, requests information on size of building needed, precautions for radiation damage and "fundaments" for machine, comparison of 4 MeV or 9 MeV linear electron accelerator to ironfree betatron ~5 MeV [tls]; reply, 9/8/1953 [cc], 8/27/1953, Box: 3, Folder: 110. Robert R. Wilson papers, 14-22-3093. Division of Rare and Manuscript Collections. https://aspace3-test.library.cornell.edu/repositories/2/archival_objects/224787 Accessed October 19, 2025.