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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Facco, A. Sokolowski, J.S. Ben-Zvi, I. Chiaveri, E. Elkonin, B.V. |
| Copyright Year | 1993 |
| Description | Author affiliation: Lab. Nazionali di Legnaro, Istituto Nazionale di Fisica Nucl., Legnaro, Italy (Facco, A.; Sokolowski, J.S.) |
| Abstract | A family of three solid niobium quarter wave superconducting resonators, cooled by direct contact with liquid helium, having resonant frequencies of 80 MHz, 160 MHz and 240 MHz and optimum velocities /spl betasub 0/=0.056, /spl betasub 0/=0.11 and /spl betasub 0/=0.17 respectively, has been designed, constructed and tested. In addition to the standard chemical surface treatment also thermal treatment at 1200/spl deg/C using the titanium sublimation technique was applied. The low-beta 80 MHz resonator Q/sub 0/=2.3/spl times/10/sup 8/, and the quality factor was almost constant from low level up to the maximum field achieved of 4.2 MV/m at 5 W. The intermediate beta 160 MHz cavity had Q/sub 0/=2.2/spl times/10/sup 8/, almost constant up to the field of 5 MV/m at 10 W. The high beta 240 MHz resonator, after deionized water high pressure rinsing, reached Q/sub 0/=3.5/spl times/10/sup 8/ and a maximum field of 4.7 MV/m at 6 W. The 80 MHz cavity serves as a prototype for the recently started production of the low-beta section of the ALPI linac. |
| Starting Page | 849 |
| Ending Page | 851 |
| File Size | 268851 |
| Page Count | 3 |
| File Format | |
| ISBN | 0780312031 |
| DOI | 10.1109/PAC.1993.308751 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1993-05-17 |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Niobium Solids Helium Resonant frequency Testing Chemicals Surface treatment Titanium Q factor Prototypes |
| Content Type | Text |
| Resource Type | Article |
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