Beam test results with the ISAC 35 MHz RFQ

The ISAC 35 MHz split-ring RFQ is designed to accelerate ions of A/q/spl les/30 from 2 keV/u to 150 keV/u in cw mode at a constant synchronous phase of -25/spl deg/. Beam tests with 7 of the 19 split rings installed (E/sub fin/=0.55 keV/u) have recently been completed. The tests demonstrated that a constant synchronous phase RFQ with external buncher works splendidly for low beta, low intensity applications. One peculiar aspect of the RFQ is that the longitudinal acceptance is larger for beams injected off-center. The test set-up and results of both the measurements and the simulations are presented and discussed.

[1]  Y. Bylinsky,et al.  RF systems of the TRIUMF ISAC facility , 1999, Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366).

[2]  A.K.Mitra,et al.  RF Tests on the Initial 2.8m Section of the 8m Long ISAC RFQ at TRIUMF , 1998 .

[3]  S. Koscielniak,et al.  Beam dynamics studies on the ISAC RFQ at TRIUMF , 1997, Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167).