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This study examines the high gradient acceleration of electrons at energies of several TeV, with a particular focus on the performance of copper structures in a defined geometry. It assesses the advantages of hard copper in X-band GLC applications and evaluates crystal characteristics vital for stable operation in normal-conducting linacs. Collaborations from 2007 to the present highlight the importance of crystal movement during acceleration pulses. Key areas of investigation include the long-term evaluation of prototype accelerators, breakdown thresholds, and the critical role of magnetic fields in operation.
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Study of high gradient acceleration High energy Simple geometry & well-defined copper 1 TeVe+e- Hard copper is better? X-band GLC in early 2000 Next 5 years 3TeVe+e- Fundamental studies focusing on crystal characteristics Serve for stable operation of normal conducting linacs in various aspects Study and develop LC prototype structuresin collaboration Crystal movement during a pulse Collaboration since 200 7 to date Main acc. in two-beam scheme Heavily damped cell High gradient long-term evaluation of prototypes Breakdown is one of the key measures of feasibility Magnetic field plays a key role