Highlights from the TESLA technical design proposal

The technical design report (TDR) of the TESLA superconducting linear collider with an integrated X-ray FEL facility, has been published in the spring of 2001 by an international collaboration. It includes a description of the high energy physics programme, a proposal for the detector, and the collider design relying on the technical results from the TESLA Test Facility (TTF). We review the results achieved by the TESLA collaboration on the superconducting RF technology and beam acceleration at the TTF linac. We highlight some aspects of the collider design and briefly describe the cost study attached to the TDR.