Development work for a superconducting linear collider
For future linear e(sup +)e(sup {minus}) colliders in the TeV range several alternatives are under discussion. The TESLA approach is based on the advantages of superconductivity. High Q values of the accelerator structures give high efficiency for converting RF power into beam power. A low resonance frequency for the RF structures can be chosen to obtain a large number of electrons (positrons) per bunch. For a given luminosity the beam dimensions can be chosen conservatively which leads to relaxed beam emittance and tolerances at the final focus. Each individual superconducting accelerator component (resonator cavity) of this linear collider has to deliver an energy gain of 25 MeV/m to the beam. Today s.c. resonators are in use at CEBAF/USA, at DESY/Germany, Darmstadt/Germany KEK/Japan and CERN/Geneva. They show acceleration gradients between 5 MV/m and 10 MV/m. Encouraging experiments at CEA Saclay and Cornell University showed acceleration gradients of 20 MV/m and 25 MV/m in single and multicell structures. In an activity centered at DESY in Hamburg/Germany the TESLA collaboration is constructing a 500 MeV superconducting accelerator test facility (TTF) to demonstrate that a linear collider based on this technique can be built in a cost effective manner and that the necessary acceleration gradients of more than 15 MeV/m can be reached reproducibly. The test facility built at DESY covers an area of 3.000 m{sup 2} and is divided into 3 major activity areas: (1) The test-linac, where the performance of the modular components with an electron beam passing the 40 m long acceleration section can be demonstrated. (2) The test area, where all individual resonators are tested before installation into a module. (3) The preparation and assembly area, where assembly of cavities and modules take place.
- Research Organization:
- National Aeronautics and Space Administration, Houston, TX (United States). Lyndon B. Johnson Space Center
- OSTI ID:
- 135345
- Report Number(s):
- N-96-10230; NASA-CP-3290-VOL-1; S-792-VOL-1; NAS-1.55:3290-VOL-1; CONF-940627-; TRN: 9610240
- Resource Relation:
- Conference: 4. international conference and exhibition of the World Congress on Superconductivity, Orlando, FL (United States), 27 Jun - 1 Jul 1994; Other Information: PBD: Apr 1995; Related Information: Is Part Of Proceedings of the 4th International Conference and Exhibition: World Congress on Superconductivity, volume 1; Krishen, K.; Burnham, C.; PB: [10] p.
- Country of Publication:
- United States
- Language:
- English
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