Radio Frequency Properties of a 3D Printed Klystron Circuit

Author:

Wehner Charlotte12ORCID,Shirley Bradley2,Mathesen Garrett2,Merrick Julian2,Weatherford Brandon2,Nanni Emilio Alessandro2ORCID

Affiliation:

1. Department of Electrical Engineering, Stanford University, 350 Jane Stanford Way, Stanford, CA 94305, USA

2. SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA

Abstract

The manufacturing of active RF devices like klystrons is dominated by expensive and time-consuming cycles of machining and brazing. In this article, we characterize the RF properties of X-band klystron cavities and an integrated circuit manufactured with a novel additive manufacturing process. Parts are 3D printed in 316 L stainless steel with direct metal laser sintering, electroplated in copper, and brazed in one simple braze cycle. Stand-alone test cavities and integrated circuit cavities were measured throughout the manufacturing process. The un-tuned cavity frequency varies by less than 5% of the intended frequency, and Q factors reach above 1200. A tuning study was performed, and unoptimized tuning pins achieved a tuning range of 138 MHz without compromising Q. Klystron system performance was simulated with as-built cavity parameters and realistic tuning. Together, these results show promise that this process can be used to cheaply and quickly manufacture a new generation of highly integrated high power vacuum devices.

Funder

U.S. Department of Energy

Publisher

MDPI AG

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Metal additive manufacturing for particle accelerator applications;Physical Review Accelerators and Beams;2024-05-17

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