| Paper | Title | Page |
|---|
| TUP58 | First Cold Tests of the Beta=0.12 Ladder Resonator at LNL | 264 |
| | - G. Bisoffi, E. Bissiato, F. Chiurlotto, A. Palmieri, A. M. Porcellato, F. Scarpa, S. Stark
INFN-LNL
| |
| | The Ladder resonator is a 4-gap full Nb cavity suitable
for the 0.1< beta <0.2 range of high current proton linacs. A
beta=0.12 Nb prototype of this cavity has been built by E.
Zanon SpA (Schio, Italy) on the basis of LNL design. In
this paper the construction procedure of such cavity, as
well as the tuning steps necessary to match field and
frequency requirements are recalled. Finally, the main
outcomes of the first cryogenic test performed at LNL in
July 2007 are described. | |
| WEP08 | Upgrade of the low-beta section of the PIAVE-ALPI linac at LNL | 450 |
| | - D. Zenere, A. Facco, F. Scarpa
INFN-LNL
| |
| | The superconducting linac PIAVE-ALPI includes a low-beta
section made of 20 bulk niobium quarter wave resonators,
working at 80 MHz, with beta=0.047 and 0.055. Originally
designed for operation at 3 MV/m with 7 W RF power,
their high Q allows significantly higher gradient, limited
at present by the existing RF system capabilities. An
upgrade program has started at LNL that includes the
construction of 4 additional cavities, the adoption of 1
kW RF power amplifiers and modifications of the
cryostats that will allow for cooling of the RF couplers.
The final goal is to increase the voltage gain in the low-beta
section from the present value of ~10 to above 20
MeV/q, allowing efficient acceleration of heavy ions with
mass number around 200. | |