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Versteegen, R.

Paper Title Page
WEPE001 Optics Studies for the Interaction Region of the International Linear Collider 3338
 
  • R. Versteegen, O. Delferrière, O. Napoly, J. Payet, D. Uriot
    CEA, Gif-sur-Yvette
 
 

The International Linear Collider reference design is based on a collision scheme with a 14 mrad crossing angle. Consequently, the detector solenoid and the machine axis do not coincide. It provokes a position offset of the beam at the Interaction Point in addition to a beam size growth. These effects are modified by the insertion of the anti-DID (Detector Integrated Dipole) aiming at reducing background in the detector. Furthermore a crab cavity is necessary to restore a 'head on' like collision, leading to higher luminosity. This introduces new beam distortions. In this paper, optics studies and simulations of beam transport in the Interaction Region taking these elements into account are presented. Correction schemes of the beam offset and beam size growth are exposed and their associated tolerances are evaluated.