What question did this study set out to answer?

The aim is to explore the RF power capabilities of 4-rod RFQs through new developments and prototype tests.

January 18, 20260 citationsOpen Access

RF power limits of 4-rod RFQs

TRToon RoggenVarian Medical Systems (Switzerland)CZChuan ZhangGSI Helmholtz Centre for Heavy Ion Research PBP. Braun

Key Points

The aim is to explore the RF power capabilities of 4-rod RFQs through new developments and prototype tests.
Prototype tests of a 6-stem model conducted
Performance tests in continuous wave (cw) mode
Observation of input power and electrode voltage using gamma spectroscopy
4-Rod RFQ reached up to 120 kW per meter at high frequencies
Power dissipation was compared to 4-vane RFQs
Significant advancements were demonstrated in RF power handling capabilities

Abstract

There is a long tradition at the Institute of Applied Physics at Frankfurt University of new developments for 4-rod. In the past years, the RF-power front8ier of 4-Rod RFQs has been explored resulting in prototype tests that pushed the power dissipation in cw-mode into the regime of 4-Vane RFQs. For instance, during performance tests of a 6 stem prototype, it could be demonstrated that a 4-Rod RFQ at high frequencies could reach up to 120 kW per meter. In these tests the input power and the electrode voltage was observed using gamma spectroscopy. An overview of activities at the IAP on this topic will be provided.

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