Dielectric Collimators for Linear Collider Beam Delivery

We submit this proposal to develop dielectric based collimator designs for future linear colliders (CLIC and ILC). We propose a research program on dielectric based collimator studies including collimator impedance optimization, beam dynamics simulations, and, finally, preliminary collimator design development.We plan to determine the feasibility of using dielectric collimators to reduce linear collider collimation system impedance and adjust it for the required collider luminosity (ILC/CLIC); carry out the collimator system optimization based on collimator geometry and properties of the collimator material; perform simulations of the Phase II demonstration experiments at the FACET facility and simulate beam dynamics for the proposed ILC/CLIC dielectric based collimation system. Commercial Applications and Other Benefits: Collimation systems are an essential part of high-energy colliders. Beam collimation systems must reduce the background in the detectors, removing the beam halo, and ensure machine protection by minimizing the activation and damage of sensitive accelerator components. A careful design of a collimation system has to take into account not only the particles traversing the collimators but also additional effects such as secondary particle production and deflecting kicks