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| THPMA004 |
RF Amplifiers and Structures for ISAC/TRIUMF
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631 |
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- A. K. Mitra, Z. T. Ang, I. V. Bylinskii, K. Fong, R. E. Laxdal, J. Lu, R. L. Poirier, V. Zviagintsev
TRIUMF, Vancouver
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The ISAC-I accelerator is comprised of two room temperature linacs; a 35MHz RFQ and a 106MHz separated function drift tube linac producing an accelerating voltage up to 4.5MV and 8.1MV respectively. In addition a pre-buncher, chopper and several re-bunchers are used in the accelerator chain to manipulate the longitudinal phase space. A heavy ion superconducting linac is being installed at ISAC/TRIUMF to increase the energy of ISAC-I from 1.5 MeV/u to 6.5 MeV/u for ISAC-II. A first stage, now in commissioning, consists of twenty medium beta cavities driven by twenty, 106MHz, tube amplifiers. In the second stage of ISAC-II, 20 high beta quarter wave superconducting cavities will be installed operating at 141 MHz. A transfer line connecting ISAC-I and ISAC-II has a room temperature buncher cavity at 35 MHz. This report will summarize rf amplifiers employed in ISAC facility and discuss the choice of amplifiers for the second stage of ISAC-II. Some of the re-furbishing and improvements that are done to ISA-I rf system will also be discussed.
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