Parallel Simulation of Independent Beam-Tunnels in Multiple-Beam Klystrons Using TESLA

Chernyavskiy, Igor A.; Cooke, S.J.; Vlasov, Alexander N.; Antonsen, Thomas M.; Abe, David K.; Levush, B.; Nguyen, Khanh

doi:10.1109/tps.2008.920270

Cited by 30 publications

(9 citation statements)

References 20 publications

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“…The RF design was created using CPI's in-house 1D largesignal code LSCEX. Using the 2.5D code TESLA [3], the electron trajectories and RF performance was then more closely analyzed for beam interception, returning electrons and specification conformance. The RF cavities, which are standard cylindrical cavities operating in the fundamental mode, were designed using Superfish and HFSS.…”

Section: Designmentioning

confidence: 99%

Development and production of a 1.3 GHz, 300 kW CW klystron

Habermann

Atkinson

Aymar

et al. 2014

IEEE International Vacuum Electronics Conference

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Communications and Power Industries has designed and manufactured the VKL-7967A, a highefficiency, high CW power L-band klystron. The klystron operates at 1.3 GHz and is designed to saturate above 300 kW CW RF output with ≥65% efficiency. The users intend to operate in the linear range of the transfer curve and therefore required 270 kW CW RF output with ≥0.5dB/dB incremental gain and ≥52% minimum efficiency. Two klystrons have been manufactured and successfully tested. Their performance data are compared with the simulations performed during the design. IntroductionFor superconducting particle accelerators there is considerable demand for RF sources operating at 1.3 GHz. In order to meet the needs for the BerlinPro project [1] under construction at Helmholtz Zentrum Berlin (Germany) as well as the eLinac project [2] at TRIUMF (Vancouver, BC, Canada), Communications and Power Industries (CPI) has designed and thus far manufactured two units of the VKL-7967A klystron. While the klystron is designed to saturate above 300 kW CW RF output power with ≥65% efficiency, the customers intend to operate at 270 kW CW RF output in the more linear range of the transfer curve (incremental gain ≥0.5dB/dB) with 52% minimum efficiency. The klystron is not required to operate up to saturation but needs to demonstrate stable operation up to 290 kW CW RF output.

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Section: Designmentioning

confidence: 99%

Development and production of a 1.3 GHz, 300 kW CW klystron

Habermann

Atkinson

Aymar

et al. 2014

IEEE International Vacuum Electronics Conference

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“…The large signal performance was calculated using the codes KLSC [7] and TESLA [8,9]. KLSC simulates interaction of cavity fields with a single electron beam, while TESLA models both single and multiple beam interactions.…”

Section: Task 3 Design Fundamental Mode Cavitymentioning

confidence: 99%

A 200 MHz 35 MW Multiple Beam Klystron for Accelerator Applications Final Report

Ives¹,

Read²,

Ferguson³

et al. 2011

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“…VKP-8291A consistently and stably achieves over 65% efficiency, based on the track record of over 100 manufactured units. The RF design process then went through several iterations using CPI's 1-D large-signal code LSCEX first and then NRL's 2.5-D code TESLA [13] to investigate 2-D or axisymmetric effects. Each iteration was compared to the known VKP-8291A example until an optimized sevencavity RF design emerged.…”

Section: Designmentioning

confidence: 99%

High-Power High-Efficiency L-band Multiple-Beam Klystron Development at CPI

Habermann

Balkcum

Begum

et al. 2010

IEEE Trans. Plasma Sci.

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Communications and Power Industries, Inc., has designed and manufactured two versions of a 10-MW-peak highefficiency multiple-beam klystron (MBK) operating at 1300 MHz. This type of klystron is favored for large particle accelerator projects such as the European X-ray Free-Electron Laser at the Deutsches Elektronen Synchrotron (DESY). Two klystrons have been made for DESY. The first-generation MBK was a vertically oriented prototype using a six-cavity design with higher order mode input and output cavities and conventional intermediate cavities. For cost and performance reasons, the secondgeneration MBK, designated VKL-8301B, utilized seven coaxial fundamental-mode cavities and is an "industrialized" horizontally oriented klystron. The klystron was designed and optimized using state-of-the-art multidimensional design codes to ensure that all performance requirements are exceeded. Agreement between the simulated and measured performances is good. The VKL-8301B prototype achieved a peak saturated RF output power of 10.4 MW and 67.8% efficiency. The data were measured at the full 1.5% duty and with 1.5-ms pulse width. The klystron satisfied all required operating conditions, including stable operation into an output mismatch of 1.2 : 1 voltage standing wave ratio at various phases. The prototype has been shipped to DESY and has been successfully tested by a customer.

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Parallel Simulation of Independent Beam-Tunnels in Multiple-Beam Klystrons Using TESLA

Cited by 30 publications

References 20 publications

Development and production of a 1.3 GHz, 300 kW CW klystron

Development and production of a 1.3 GHz, 300 kW CW klystron

A 200 MHz 35 MW Multiple Beam Klystron for Accelerator Applications Final Report

High-Power High-Efficiency L-band Multiple-Beam Klystron Development at CPI

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