The Spallation Neutron Source (SNS) project is a collaboration among Argonne, Brookhaven, Jefferson, Lawrence Berkeley, Los Alamos and Oak Ridge National Laboratories. The Linac, which injects beam into an accumulator ring, is comprised of both normal and superconducting rf (SRF) accelerating structures. Two room-temperature rf structures, a 402.5-MHz drift-tube linac (DTL) and an 805-MHz coupl...

It has been suggested for quality assurance purposes that linac output variations for helical tomotherapy (HT) be within +/-2% of the long-term average. Due to cancellation of systematic uncertainty and averaging of random uncertainty over multiple beam directions, relative uncertainties in the dose distribution can be significantly lower than those in linac output. The sensitivity of four HT c...

Background: The aim of this study was to investigate the correlation between bone mineral density (BMD) and body composition measured by Osteosys Primus® GE Lunar Prodigy® calculate conversion rate 2 devices.Methods: 40 subjects were men women in aged 20 29 years old. All participants scanned twice on both Primus (OsteoSys) Prodigy (GE Healthcare) DXA systems using manufacturers’ standard scann...

In view of a possible evolution of the CERN accelerator complex towards higher proton intensities, a 2.2 GeV H linac with 4 MW beam power has been designed, for use in connection with an accumulator and compressor ring as proton driver of a muon-based Neutrino Factory. The high-energy part of this linac can use most of the RF equipment (superconducting cavities and klystrons) from the LEP colli...

The Italian hadron-therapy centre CNAO (Centro Nazionale di Adroterapia Oncologica) [1] is designed for the treatment of tumours with proton and light ion beams and to clinical and radiobiological research. The design consists of two ECR ion sources, a 7 MeV/u injector linac identical to the linac of the Heidelberg ion therapy centre HIT [2][3] and a 400 MeV/u synchrotron. GSI delivers technica...