A room temperature test bed for evaluating 700-MHz RF windows and power couplers for the superconducting cavities of the APT linac

Gjoia, J.; Cummings, K.; Gautier, C.; Hargenrater, T.; Haynes, W.B.; Krawczyk, Frank L.; Madrid, M. A.; Roybal, W.; Rusnak, B.; Schmierer, E. N.; Smith, Brian G.; Zimmerman, Ralph; Kishiyama, K.; Shen, S.; Safa, H.

doi:10.1109/pac.1999.795560

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…Modified Conflat ® gaskets are used on the window side to provide good RF contact and, at the same time, a UHV joint [3].…”

Section: General Description Of the Fpc Designmentioning

confidence: 99%

“…The test stand used for the RF processing of the FPCs includes a robust, mobile aluminum cart, similar to other designs [3], [4], [5]. This houses the vacuum system (1), the connecting waveguide (2) and two SNS FPCs (3), a de-ionized water-compatible cooling manifold (not shown) for the inner conductor extensions and instrumentation needed during baking and/or RF processing.…”

Section: Test Cartmentioning

confidence: 99%

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Processing test stand for the fundamental power couplers of the Spallation Neutron Source (SNS) superconducting cavities

Stirbet

Campisi²,

Davis³

et al.

PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)

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A test stand has been designed, constructed and commissioned for the processing of the SNS superconducting cavity fundamental power couplers. The cart is designed for insertion into a high-power (1 MW and higher) RF system at 805 MHz and it includes a complete vacuum pumping system, a bakeout control system and, in separate racks, all the controls for the RF conditioning, including interlocks, diagnostics and data acquisition systems.

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“…Modified Conflat ® gaskets are used on the window side to provide good RF contact and, at the same time, a UHV joint [3].…”

Section: General Description Of the Fpc Designmentioning

confidence: 99%

Section: Test Cartmentioning

confidence: 99%

Processing test stand for the fundamental power couplers of the Spallation Neutron Source (SNS) superconducting cavities

Stirbet

Campisi²,

Davis³

et al.

PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)

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“…Power coupler/window assemblies were tested on the Room Temperature Test Bed (RTTB) [5]. Up to 1 MW, CW RF power is available from a 700-MHz klystron.…”

Section: Test Stand and Proceduresmentioning

confidence: 99%

Results of the APT RF power coupler development for superconducting linacs

Schmierer

Haynes²,

Krawczyk³

et al.

PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)

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For the new baseline APT (Accelerator Production of Tritium) linac design, the power couplers are required to transmit 420 kW of CW RF power to the superconducting cavities at 700 MHz. These couplers consist of an airside waveguide-to-coax transition, an air/vacuum break made by two planar, coaxial windows, and a vacuum-side coaxial antenna section. The coaxial antenna allows adjustability of the RF matching to the superconducting cavities. Design, fabrication, and testing of the power coupler/window occurred over the last four years, and room temperature testing of the prototype design is complete. Coupler/window assemblies have transmitted power to 1 MW, CW and have handled full reflected 850 kW, CW over a limited standing-wave phase range. Couplers were tested with a portion of the outer conductor cooled by liquid nitrogen to study the effects of condensed gases. Final results, conclusions, and lessons learned about the coupler design, fabrication, and testing will be discussed.

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RF characterization and testing of ridge waveguide transitions for RF power couplers

Kumar

Jose

Singh

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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A room temperature test bed for evaluating 700-MHz RF windows and power couplers for the superconducting cavities of the APT linac

Abstract: Superconducting radio frequency (SCRF) cavities are used in the high-energy portion of the Accelerator

Cited by 3 publications

References 2 publications

Processing test stand for the fundamental power couplers of the Spallation Neutron Source (SNS) superconducting cavities

Processing test stand for the fundamental power couplers of the Spallation Neutron Source (SNS) superconducting cavities

Results of the APT RF power coupler development for superconducting linacs

RF characterization and testing of ridge waveguide transitions for RF power couplers

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