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Phys. Rev. ST Accel. Beams 7, 012002 (2004) [8 pages]

Test of two Nb superstructure prototypes

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J. Sekutowicz, P. Castro, A. Gössel, G. Kreps, R. Lange, A. Matheisen, W.-D. Möller, H.-B. Peters, D. Proch, H. Schlarb, S. Schreiber, S. Simrock, and M. Wendt
DESY, Notkestrasse 85, 22603 Hamburg, Germany

N. Baboi
SLAC, 2575 Sand Hill Road, Menlo Park, California 94025, USA

M. Ferrario
INFN, Via E. Fermi 40, 00044 Frascati, Italy

M. Huening
FNAL, MS 306, Batavia, Illinois 60510, USA

M. Liepe
Cornell University, Ithaca, New York 14853, USA

C. Pagani
INFN-Milano, Via Fratelli Cervi 201, 20090 Segrate, Italy

S. Zheng
Tsinghua University, 100084 Beijing, China

Received 21 October 2003; published 20 January 2004

An alternative layout of the TESLA linear collider (Technical Design Report, DESY Report No. 2001-011, 2001), based on weakly coupled multicell superconducting structures (superstructures), significantly reduces the investment cost due to a simplification in the rf system of the main accelerator. In January 1999, preparation of the beam test of the superstructure began in order to prove the feasibility of this layout. Progress in the preparation was reported frequently in Proceedings of TESLA Collaboration Meetings. Last year, two superstructures were installed in the Tesla Test Facility linac at DESY to experimentally verify methods to balance the accelerating gradient in a weakly coupled system, the stability of the energy gain for the entire train of bunches in macropulses, and the damping of higher order modes. We present results of the first cold and beam test of these two Nb prototypes.

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© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevSTAB.7.012002
DOI:
10.1103/PhysRevSTAB.7.012002
PACS:
29.17.+w