Abstract
We report preliminary designs for the arc dipoles and quadrupoles of the FCC-ee double-ring collider. After recalling cross sections and parameters of warm magnets used in previous large accelerators, we focus on twin aperture layouts, with a magnetic coupling between the gaps, which minimizes construction cost and reduces the electrical power required for operation. We also indicate how the designs presented may be further optimized so as to optimally address any further constraints related to beam physics, vacuum system, and electric power consumption.
Highlights
AND MAIN REQUIREMENTSFCC-ee is the lepton collider within the Future Circular Collider (FCC) study
The aperture of the FCC-ee bending magnets (Table I) depends on the size of the vacuum chamber, which is in turn dictated by impedance and synchrotron radiation absorption [13], not directly by the beam size
To have an idea of the resistive voltage, we use the resistance per unit meter and we consider a 100 km circuit, taking the same busbar cross section for the bypasses
Summary
CERN-The European Organization for Nuclear Research, CH-1211 Geneva, Switzerland (Received 29 June 2016; published 2 November 2016). We report preliminary designs for the arc dipoles and quadrupoles of the FCC-ee double-ring collider. After recalling cross sections and parameters of warm magnets used in previous large accelerators, we focus on twin aperture layouts, with a magnetic coupling between the gaps, which minimizes construction cost and reduces the electrical power required for operation. We indicate how the designs presented may be further optimized so as to optimally address any further constraints related to beam physics, vacuum system, and electric power consumption
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