Accelerators - limitations of technology and novel accelerator ideas: The working group reports

Hadron coiliders and accelerators in the 20 TeV energy range turned out to be the majority interest among active members of the Accelerator Row Group. While other types of accelerator and other energy ranges were discussed, largely on the basis of work done elsewhere, our primary creative activities at this summer study focused on the hadron facility. Examining both the economic and accelerator physics dimensions of such a facility, we were able to give some hope to the idea that a well designed and concentrated R/D program, elaborating much further on technologies we now possess, might bring a 20 TeV facility within our national reach. The central challenges for this R/D program appear to be: achievement of virtual automation of superconducting magnet, accelerator housing and other accelerator component manufacture and installation; achievement of a thorough understanding of the field vs. cost relation for superconducting magnets; and achievement of a thorough understanding of the luminosity-aperture-energy relation