Article type: Original Article Introduction: The ultimate goal of radiation treatment planning is to yield a high tumor control probability (TCP) with a low normal tissue complication probability (NTCP). Historically dose volume histogram (DVH) with only volumetric dose distribution was utilized as a popular tool for plan evaluation hence present study aimed to compare the radiobiological effec...

We explore the NLC linac optics compatible with a low energy scenario where initially only part of the full linac is installed. Optics modification suitable for a low energy beam running and upgrade to the nominal energy is discussed. Linac parameters and beam tolerances in the modified lattice are compared to the nominal design. Abstract We explore the NLC linac optics compatible with a low en...

The injector Linac control system for SPring-8 is under development and the first trial will be held soon for testing total performance. We designed this system using object oriented methodology to integrate the operator environment and the database architecture and for easy maintainability. A disadvantage of the object oriented approach is a long lead time for abstraction, modeling and definit...

The bremsstrahlung of accelerated electrons passing through a converter is used to study multiparticle photonuclear reactions. results calculations, numerical modeling, design, and testing special magnetic cleaning system obtain “pure” beam quanta when studying the cross-sections such reactions at LUE-40 linac are presented. based on commercially available permanent magnets rectangular cross-se...

SPIRAL2 is a superconducting LINAC subject to cryogenic thermoacoustic oscillations occurring in its valves boxes. 4 years of monitoring and experimental investigations with thousands datasets turned these unwanted effects into an opportunity study understand thermoacoustics complex environment such as real life accelerator. Without digging deep Rott’s theory, thoroughly shown other works, this...

The real-time operation of a linac-MRI system will require proper radio frequency (RF) shielding such that the MRI images can be acquired without extraneous RF noise from the linac. We report on the steps taken to successfully shield the linac from the MRI such that the two devices can operate independently of one another. RF power density levels are reported internally and externally to the RF...

We have simulated the head geometry of a Varian Clinac 2100C/2300C medical accelerator in a Monte Carlo calculation to produce photoneutrons and transport them through the head shielding into a typical therapy room (modeled by a test cell at Varian Associates). The fast neutron leakage fluence and energy spectra have been calculated at 7 positions around the linac head for typical beam operatio...

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...