| Paper | Title | Page |
|---|
| MO402 | Recent Progress in the Superconducting RF Program at TRIUMF/ISAC | 42 |
| | - R. E. Laxdal, K. Fong, M. Laverty, A. Mitra, Q. Zheng, V. Zvyagintsev
TRIUMF
| |
| | The first phase of the ISAC-II superconducting accelerator
has recently been commissioned. The heavy ion linac
adds 20MV to the 1.5MeV/u beam injected from the ISAC
post accelerator. The linac is composed of five cryomodules;
each cryomodule housing four 106 MHz quarter wave
resonators (Beta0= .057, 0.071) and one 9 T superconducting
solenoid all operating at 4K. On-line performance has confirmed
cw cavity operation at a peak surface field in excess
of 35 MV/m. Performance after 18 months of operation
and a full thermal cycle during the annual shutdown shows
very little degradation in performance. The second phase
of the program will see the installation of a further 20 MV
of 141 MHz quarter wave cavities with (beta0=0.11. Two prototypes
of the cavities are now in production. The mechanical
drive for the coupling loop of the Phase I cavities is
now being modified to improve the motion as part of the
Phase II hardware development. TRIUMF is proposing to
build a 50MeV electron driver as part of the next five year
plan. Consequently plans are now underway to upgrade the
SRF lab to support developments at 1.3 GHz. The report
will summarize all aspects of the program. | |
 | Slides(PDF) | |
| TUP21 | RF Cavity Performance for the ISAC-II Superconducting Linac | 166 |
| | - R. E. Laxdal, K. Fong, M. Laverty, A. Mitra, Q. Zheng, V. Zvyagintsev
TRIUMF
| |
| | The ISAC-II superconducting linac with twenty 106
MHz quarter wave cavities is now operational since April
2006. The cryomodule design is such that the cavity rf surfaces
share the vacuum space with the thermal isolation
volume. Because of this we are interested in logging the
performance of the cavities over time to estimate degradation
due to contamination during operation or maintenance.
Early commissioning demonstrated on-line cw performance
at a peak surface field in excess of 35 MV/m.
Performance after one year of operation and a full thermal
cycle during the annual shutdown shows very little degradation
in performance. The paper summarizes the rf performance
with a particular look at maintenance and operation
issues. | |