Development of a superconducting radio frequency photoelectron injector

Arnold, A.; Büttig, H.; Janssen, D.; Kamps, T.; Klemz, G.; Lehmann, W.D.; Lehnert, U.; Lipka, D.; Marhauser, Frank; Michel, P.; Möller, K.; Murcek, Petr; Schneider, C.; Schurig, R.; Staufenbiel, F.; Stephan, J.; Teichert, J.; Volkov, Vladimir; Will, I.; Xiang, Rong

doi:10.1016/j.nima.2007.04.171

Cited by 33 publications

(15 citation statements)

References 10 publications

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“…The ratio of the peak axis field to the efficient accelerating field E z: max =E acc ¼ 2.70 [7]. A normal conducting cathode plug is inside of an adopted cathode hole in the half cell, isolated with a vacuum gap.…”

Section: Cavity Geometry and Field Distribution Of Srf Gunmentioning

confidence: 99%

“…The Cs 2 Te layer (diameter 8 mm) deposited on the molybdenum plug is the standard photocathode for this gun. More details are described in [7].…”

Section: Cavity Geometry and Field Distribution Of Srf Gunmentioning

confidence: 99%

“…In recent years, superconducting rf photoinjectors (SRF gun) have drawn a lot of attention because of their characters: continuous-wave (cw) operation, flexible bunch structures, low emittance compared to the other high average current sources [5] and the potential application for polarized beam generation [6]. The ELBE SRF gun within the cooperation of HZDR, HZB, DESY and MBI has been successfully commissioned [7,8] and firstly operated for the ELBE IR-FEL [9]. It is operated at a peak field E z: max of up to 16.2 MV=m at cw mode and 21.6 MV=m at macropulse mode.…”

Section: Introductionmentioning

confidence: 99%

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Experimental studies of dark current in a superconducting rf photoinjector

Xiang

Arnold

Kamps

et al. 2014

Phys. Rev. ST Accel. Beams

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A superconducting rf photoinjector (SRF gun) has been put in operation successfully at the radiation source ELBE. It produces a 13 MHz, low emittance, cw beam with beam current up to 400 μA and energy of 3 MeV. During the gun operation, the field emission from the niobium cavity and the Cs 2 Te cathodes produces dark current. In this paper, we study the dark current of the SRF gun by using the existing diagnostics beam line. The dependency of the intensity and the energy spectrum on the cavity gradient and the cathode voltage are examined, and the emission sources are analyzed. Furthermore, the new project of installing a strip line kicker to reduce the dark current effect is presented.

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Section: Cavity Geometry and Field Distribution Of Srf Gunmentioning

confidence: 99%

“…The Cs 2 Te layer (diameter 8 mm) deposited on the molybdenum plug is the standard photocathode for this gun. More details are described in [7].…”

Section: Cavity Geometry and Field Distribution Of Srf Gunmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental studies of dark current in a superconducting rf photoinjector

Xiang

Arnold

Kamps

et al. 2014

Phys. Rev. ST Accel. Beams

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“…The target of the collaboration is to set up a SRF gun 8 together with a diaga͒ Author to whom correspondence should be addressed. Electronic mail: kamps@bessy.de.…”

Section: Motivationmentioning

confidence: 99%

Electron beam diagnostics for a superconducting radio frequency photoelectron injector

Kamps

Arnold

Boehlick

et al. 2008

Review of Scientific Instruments

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A superconducting radio frequency ͑SRF͒ photoelectron injector is currently under construction by a collaboration of BESSY, DESY, FZD, and MBI. The project aims at the design and setup of a continuous-wave SRF injector including a diagnostics beamline for the ELBE free electron laser ͑FEL͒ and to address R&D issues on low emittance injectors for future light sources such as the BESSY FEL. Of critical importance for the injector performance is the control of the electron beam parameters. For this reason a compact diagnostics beamline is under development, serving a multitude of operation settings. In this paper the layout and the rationale of the diagnostics beamline are described. Furthermore detailed information on specific components is given, together with results from laboratory tests and data taking.

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“…Figure 1 shows Rossendorf SRF-gun cavity and its assembly in cryostat [3,4]. The gun consists of 3.5-cell 1.3 GHz bulk niobium cavity, a mechanism for exchanging and precise positioning of the Cs 2 Te cathode and a choke filter preventing leakage of the RF.…”

Section: Rossendorf 13 Ghz Srf-injectormentioning

confidence: 99%

Superconducting Rf Photoinjectors: An Overview

Sekutowicz

2007

The Physics and Applications of High Brightness Electron Beams

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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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Development of a superconducting radio frequency photoelectron injector

Cited by 33 publications

References 10 publications

Experimental studies of dark current in a superconducting rf photoinjector

Experimental studies of dark current in a superconducting rf photoinjector

Electron beam diagnostics for a superconducting radio frequency photoelectron injector

Superconducting Rf Photoinjectors: An Overview

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