NIOBIUM SPUTTER-COATED COPPER QUARTER-WAVE RESONATORS

Authors
PALMIERI V PORCELLATO AM PRECISO R RUZINOV VL STARK SY BADAN L KULIK II
Citation
V. Palmieri et al., NIOBIUM SPUTTER-COATED COPPER QUARTER-WAVE RESONATORS, Cryogenics, 34, 1994, pp. 773-776
Citations number
11
Categorie Soggetti
Physics, Applied",Thermodynamics
Journal title
Cryogenics → ACNP
ISSN journal
00112275
Volume
34
Year of publication
1994
Supplement
ICEC
Pages
773 - 776
Database
ISI
SICI code
0011-2275(1994)34:<773:NSCQR>2.0.ZU;2-H
Abstract
High accelerating fields at low rf power losses are needed for the ALP I superconducting booster currently under construction at Legnaro. Nio bium sputtering onto 160 MHz OFHC Copper Quarter Wave resonators (QWRs ) has been investigated in a Biased DC Diode configuration. Q-values o f the order of 10(9) and accelerating fields over 6 MV/m at 7 Watt - t hat are far above ALPI specifications - are currently achievable with high reproducibility. Due to the high RF performances achieved and the ir reliability, sputtered QWRs will be installed into the ALPI high be ta section.