ISIS is a pulsed neutron spallation source located at the Rutherford Appleton Laboratory (UK). The 163 m circumference rapid cycling (50 Hz) synchrotron accelerates 3E13 protons per pulse from 70 to 800 MeV and then delivers these to one of two neutron producing target. Over the past year there has been a concerted effort to improve understanding of activation of certain accelerator...
At FAIR, a proton beam from the SIS100 synchrotron with a kinetic energy of 29 GeV will be used for the pbar production. Every 10 seconds 2.5E13 protons will be accelerated in the SIS100 to 29 GeV and a bunch of 50 ns duration will be formed. Antiprotons will be produced in collision of these protons with a nickel target. Immediately behind the target, a pulsed magnetic horn will be placed to...
6. Comparisons of Prompt Radiation Fields and Material Activations Induced by Four Accelerators in Taiwan
With an increasing number of large accelerator facilities in Taiwan, the dose assessment and measurement technology for accelerator radiation becomes more and more important. The accelerators of interest include a 3-GeV electron synchrotron in National Synchrotron Radiation Research Center, a 235-MeV proton therapy accelerator in Chang Gung Memorial Hospital, a proposed 400-MeV/A carbon ion...
The presentation covers a simulation of the radiation field around the 1.4-GeV electron beam dump of the FERMI free-electron laser. Electromagnetic and neutron dose rates are calculated and in good agreement with ionisation chamber and superheated drop detector measurements. The simulation uses magnetic fields, several types of biasing, and a few LATTICE elements.
15. Simulation of Bremsstrahlung spectra in general targets and its application to a model of a laser-driven irradiation source
A model for bremsstrahlung production in targets of variable length is being developed by means of FLUKA simulations. Laser-accelerated electron beams, which have recently been proved as an alternative for conventional particle accelerators in tumor irradiation, usually have a broad energy distribution, thus depriving thin and thick targets approximations of sense. Discussing technical aspects...
14. Code intercomparison and benchmark for muon fluence and absorbed dose induced by an 18 GeV electron beam after massive iron shielding
Stefan E. Mueller
In 1974, Nelson, Kase, and Svenson published an experimental investigation on muon shielding using the SLAC high energy LINAC. They measured muon fluence and absorbed dose induced by a 18 GeV electron beam hitting a copper/water beamdump and attenuated in a thick steel shielding. In their paper, they compared the results with the theoretical models available at the time. In order to compare...
The Calliope irradiation facility, located in the ENEA Casaccia research center, is a large pool-type irradiation plant capable of processing different kind of samples, even biased electronics and detectors. The activity of the facility is focused on the radiation hardness measurement of materials and components for space and high-energy physics applications. The irradiation hall is 6x7 m2...
Neutrons constitute an important component of the radiation environment. Their energy distribution may span from thermal up to hundreds of MeV. This paper describes the simulation of a high sensitivity Bonner Sphere neutron detector uses a 3He counter tube inside a polyethylene moderator which is a part of a scientific research project named distributed dynamic radioactive detection imaging...
Moritz Guthoff (CERN)
FLUKA is used in the Beam Radiation Instrumentation and Luminosity project (BRIL) of CMS to simulate the radiation levels due to proton-proton collisions. Results are used by the whole CMS collaboration for various applications: Comparison with detector hit rates, pile-up studies, predictions of radiation damage based on various models (Dose, NIEL, DPA), shielding design, estimations of...
In the TOP-IMPLART project framework (a joint project between ENEA, ISS and IFO), several simulations have been carried out on the ENEA GRID infrastructure, in order to place the basis for the development of a fast Treatment Plan System (TPS) and in order to develop the accelerator beam monitor system. Fluka parallelization has been performed, allowing run on GRID infrastructure and reducing...
Caterina Cuccagna (TERA Foundation (IT))
Fluka simulations to optimize the distance between the isocenter and the position of the last scanning magnet in order to reduce the skin dose to the patient. Technical peculiarities: -Integration between FLUKA and TRAVEL, a multi-particle tracking software developed at CERN. -Dose simulations in phantoms/patients performed using a simulated beam from a proton Linac for therapy, with an active...
The upcoming ARIEL facility at TRIUMF will have a new electron beam line, delivering a maximum of 500 kW beam (10 mA at 50 MeV) to one of the target stations in the newly built target hall for Rare Isotope Beam (RIB) production. In preparation for this, a tunning beam dump (BD) is designed and located upstream in the electron hall. This tunning beam dump will be in use until the completion...
30. Accurate Monte Carlo modeling of biomedical cyclotrons: optimization of FLUKA physics and transport parameters for dosimetry, shielding and activation calculations
Knowledge of the radiation field around biomedical cyclotrons is necessary for the design of shieldings, the classification of areas and the protection of the workers, the public and the environment. In recent years, Monte Carlo simulations have been used to create models able to predict, with good approximation, the radiation field around these accelerators. Since the complexity of the...