Crystal channeling to extract a high energy hadron.. (CRYSBEAM)
Crystal channeling to extract a high energy hadron beam from an accelerator
Date du début: 1 mai 2014,
Date de fin: 30 avr. 2019
"A new generation of parasitic beam extraction of high energy particles from an accelerator is proposed in CRYSBEAM. Instead of massive magnetic kickers, bent thin crystals trapping particles within the crystal lattice planes are used. This type of beam manipulation opens new fields of investigation of fundamental interactions between particles and of coherent interactions between particles and matter. An experiment in connection to Ultra High Energy Cosmic Rays study in Earth’s high atmosphere can be conducted.Several TeV energy protons or ions are deflected towards a chosen target by the bent lattice planes only when the lattice planes are parallel to the incoming particles direction.The three key ingredients of CRYSBEAM are:- a goniometer based on piezoelectric devices that orients a bent finely-polished low-miscut silicon crystal with a high resolution and repeatability, monitoring its position with synthetic diamond sensors. Novel procedures in crystal manufacturing & testing and cutting-edge mechanical solutions for motion technology in vacuum are developed;- a silica screen that measures the deflected particles via Cherenkov radiation emission in micrometric optical waveguides. These are obtained with an ultra-short laser micro-machining technique as for photonic devices used in quantum optics and quantum computing. The screen is a direct beam-imaging detector for a high radiation dose environment;- a smart absorber, which simulates the Earth’s atmosphere, where particles are smashed and secondary showers are initiated. This sets the path to measure hadronic cross sections at an energy relevant for cosmic rays investigation.The R&D for the various components of such a system are carried out within this project and direct tests at CERN Super Proton Synchrotron to be performed prior to the final installation in the Large Hadron Collider at CERN are proposed. A new concept of particle accelerator operations will be finally set in place."
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