Vol. 43 - The Energy Efficiency of Proton Driver Accelerators

High power proton driver accelerators are used to generate secondary particles at high intensities, such as pions, muons, neutrons and ultracold neutrons or neutrinos. The applications of these facilities have a broad spectrum in the fields of particle physics and condensed matter physics. Another industrial application under discussion is transmutation with accelerator driven systems. On the other hand, the production of megawatt-class proton beams implies the consumption of electrical power on a large scale. New projects and operating facilities must focus on improving the energy efficiency with a higher priority. This is especially true for linacs suggested for ADS-type applications, which may have to deliver >10 MW beams. With this workshop we are aiming to support such developments towards higher efficiency. The goal of this workshop is to consider the whole power conversion chain from grid to the secondary radiation needed at the experiments. In addition, important auxiliary systems of proton drivers are covered, such as cryogenic facilities. In the first session the motivation for energy efficienct accelerator technology was summarized. Then the major applications of proton drivers were reviewed – accelerator driven systems, particle physics research at the intensity frontier and neutron sources for condensed matter physics. In four sessions the energy efficiency topics beam targets, RF generation, accelerator concepts and auxiliary systems were discussed.