High current superconducting gun at 703.75MHz

Calaga, R.; Ben‐Zvi, I.; Blaskiewicz, M.; Chang, X.; Kayran, D.; Litvinenko, Vladimir

doi:10.1016/j.physc.2006.03.098

Cited by 25 publications

(26 citation statements)

References 4 publications

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“…The two different plots shown were from the original analysis of the cavity beampipe radius, and for this cavity the 5 cm beampipe radius spectrum is the one under consideration. [5] Due to the frequency of the injector the harmonics spectrum is fairly sparse and spread out and avoids overlapping with any HOMs. …”

Section: Transverse Loss Factor V/pc/m 32mentioning

confidence: 99%

R&D ERL: SRF Electron Gun

Burrill¹

2010

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Section: Transverse Loss Factor V/pc/m 32mentioning

confidence: 99%

R&D ERL: SRF Electron Gun

Burrill¹

2010

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“…The gun of this kind will be needed to generate electron beam for the electron coolers for two rings of RHIC [7]. Other potential future applications for the high current RF-gun are electron injectors for linacs driving MW-class FELs.…”

Section: Mhz Rf-gun; Collaboration Between Bnl and Aesmentioning

confidence: 99%

Superconducting Rf Photoinjectors: An Overview

Sekutowicz

2007

Int. J. Mod. Phys. A

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R&D programs based on various approaches at AES, Beijing University, BNL, FZ-Rossendorf, JLab and DESY will lead in the near future to low emittance continuous wave (cw) operating SRF-guns, which are indispensable devices for the cw operating superconducting linacs driving FEL facilities. This contribution covers present status of these programs and progress made since the last SRF2005 Workshop at Cornell University.

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“…A superconducting rf (SRF) gun photoinjector [1] was chosen to generate high-current, high-brightness electron beam for the Energy Recovery Linac (ERL) at Brookhaven National Laboratory (BNL) [2]. The 704-MHz, half-cell SRF gun requires total rf power of 1 MW in order to meet the beam current and energy specifications (0.5 A, 2 MeV).…”

Section: Introductionmentioning

confidence: 99%

“…Several coupler options were considered and a coaxial coupler was selected. To enhance coupling, the antenna has a specially shaped tip-an ellipse bent to conform to the profile of the beam pipe-called ''pringle'' [1]. An asymmetric disturbance of the structure's electromagnetic field from a single fundamental power coupler would produce a transverse kick to the passing-by bunches.…”

Section: Introductionmentioning

confidence: 99%

Design, simulations, and conditioning of 500 kW fundamental power couplers for a superconducting rf gun

Altinbas

Belomestnykh

et al. 2012

Phys. Rev. ST Accel. Beams

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A half-cell superconducting rf electron gun is designed to provide 0.5 A, 2 MeV beam for the Brookhaven National Laboratory R&D Energy Recovery Linac. Total rf power of 1 MW must be delivered to beam to meet the beam current and energy specifications, resulting in very strong coupling. Two opposing fundamental power couplers (FPCs) are employed to minimize the transverse kick to beam traversing the structure and to halve the power through the coupler. A single-window coaxial coupler has been designed to meet the average power and rf coupling requirements. The coupler features a planar beryllia rf window for better handling high thermal stresses and a ''pringle''-shaped tip of the antenna for enhancing rf coupling. Two FPCs have been fabricated and tested in preparation for the gun cryomodule assembly. A room-temperature test stand was used for conditioning couplers in full reflection regime with variable phase of the reflecting wave. The couplers were tested up to 250 kW in pulse mode and 125 kW in cw mode at different settings of the reflecting wave phase to expose all rf surfaces along the couplers to high fields. Several multipacting barriers were encountered and successfully processed away. The rf power levels, at which multipacting was found, match well those found in computer simulations.

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High current superconducting gun at 703.75MHz

Cited by 25 publications

References 4 publications

R&D ERL: SRF Electron Gun

R&D ERL: SRF Electron Gun

Superconducting Rf Photoinjectors: An Overview

Design, simulations, and conditioning of 500 kW fundamental power couplers for a superconducting rf gun

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