We determined the distribution of activation products inside magnet coils a medical cyclotron that has been operational for fifteen years. Besides FLUKA, we based our approach on new software tools (RAW and ActiWiz) developed high-energy accelerators at CERN. A combined analysis measurements with Monte-Carlo simulations resulted in detailed three-dimensional radiological characterisation coils....

A single electron in a quantum cyclotron yields new measurements of the electron magnetic moment, given by g/2 = 1.001 159 652 180 73 (28) [0.28 ppt], and the fine structure constant, α−1 = 137.035 999 084 (51) [0.37 ppb], both significantly improved from prior results. The static magnetic and electric fields of a Penning trap confine the electron, and a 100 mK dilution refrigerator cools its c...

At the high-luminosity LHC, radiation levels for participating experiments will increase by over one order of magnitude in total ionising dose compared to current levels. Therefore, components and materials installed closest interaction points, such as new ATLAS Inner Tracker (ITk), have be tested their durability high-radiation environments. The variety multitude require a large number irradia...

Here we present results of the computer design of the structural elements of a compact cyclotron by the example of HITFiL cyclotron selected as the driving accelerator that is under construction at the Institute of Modern Physics (Lanzhou, China). In the article a complex approach to modeling of the compact cyclotron, including calculation of electromagnetic ˇelds of the structural elements and...

The Research Center for Nuclear Physics (RCNP) cyclotron cascade system has been operated to provide high quality beams for various experiments. In order to increase the physics research opportunities, the Azimuthally Varying Field (AVF) cyclotron facility was upgraded recently. A flat-topping system and an 18-GHz superconducting Electron Cyclotron Resonance (ECR) ion source were introduced to ...

The Research Center for Nuclear Physics (RCNP) cyclotron cascade system has been operated to provide high quality beams for various experiments. In order to increase the physics opportunities, the Azimuthally Varying Field (AVF) cyclotron facility was upgraded recently. A flat-topping system and an 18 GHz superconducting Electron Cyclotron Resonance (ECR) ion source were introduced to improve t...

This paper reviews a study of a compact superconducting cyclotron to accelerate 200 microamps of protons to 250 MeV. The basic cyclotron structure is the same as that developed in a previous study of a 250 MeV cancer therapy cyclotron, the chief difference in the study reported here being much higher beam current (x10,000) than in the therapy cyclotron to meet desired specifications for the ‘Dr...

Cyclotron line scattering features are detected in a few tens of X-ray pulsars (XRPs) and used as direct indicators strong magnetic field at the surface accreting neutron stars (NSs). In cases, cyclotron lines known to be variable with accretion luminosity XRPs. It is accepted that observed variations related geometry dynamics flow above poles NS. A positive correlation between centroid energy ...

Standard ocular tumor treatment includes brachytherapy, as well as proton therapy, particularly for large melanoma tumors. However, the effects of different radiation types on the metastatic spread is not clear. We aimed at comparing ruthenium ((106)Ru, emitting β electrons) and iodine ((125)I, γ-radiation) brachytherapy and proton beam therapy of melanoma implanted into the hamster eye on deve...