Speaker
Description
The Super Tau-Charm Facility (STCF) is a new generation of electron-positron collider under planning, with a designed center-of-mass energy range of 2–7 GeV. The positrons produced via electron targeting are captured and accelerated by several accelerating structures to an energy of 200 MeV. To reduce beam loss, the positron beam employs large-aperture accelerating structures. The aperture is kept constant, and the group velocity is controlled solely by adjusting the length of the nose cone to facilitate production. Pulse compressors are incorporated to increase the power delivered to the beam by the accelerating structures. This paper presents the designs of 2 m and 3 m large-aperture accelerating structures, both achieving gradients higher than 15 MV/m.
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