Conference


Status of ALPI and Related Developments of Superconducting Structures

G. Fortuna

INFN, Laboratori Nazionali di Legnaro, Italy

Abstract

This talk treats of three main topics namely:

Since the beginning of 1995 several beams have been successfully accelerated with the ALPI Linac injected by the XTU-Tandem expecially in the medium-light mass region using Pb-plated and Nb-coated resonators.

The machine, warmed up several times from 1993, does not exhibit significant Q-degradation at high field. The difficulty of transferring the high Q-performances of the Nb based resonators from test bench conditions into the machine environment is discussed with some detail. The most challenging work now under way in Legnaro is the construction of a superconducting RFQ which will boost the velocity of the ions produced by an ECR source and preaccelerated through a 350 KV platform from beta 0.01 up to beta 0.035. The design work and the key choices of manufacturing process will be presented.

New ideas in the construction of seamless cavities suitable for the next generation of e+e- colliders will be discussed.


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sln 15 March 1996