IBIC2017 - List of Authors (Xiang, R.)

Paper	Title	Page
MOPCC07	Diagnostics of ELBE SRF Gun - Status and Future Design	53
	P.N. Lu, A. Arnold, P. Murcek, J. Teichert, H. Vennekate, R. Xiang HZDR, Dresden, Germany
	Since 2015, Mg photocathodes have been applied for the ELBE SRF gun. Recently, user experiments with a bunch charge of 100 pC and beam transport experiments with 200 pC have been performed. The electron beam diagnostics will be presented, including the slit-scan measurements of the transverse phase space, the quadrupole-scan emittance measurement and the phase-scan bunch length measurement. Principles and results of these diagnostics will be introduced, as well as the error analysis. A UV laser is used to emit electron, the pulse length of which directly impacts the electron beam. A commercial cross correlator has been installed to measure the temporal profile of the UV laser. The alignment of the beam measurement results for this will be presented. Bases on the operation experiences from the current SRF gun, a new gun-lab has been proposed to build and test the next SRF gun in a separated room from the ELBE accelerator. The preliminary design of a new corresponding diagnostics beamline will be presented, featuring a fast beam-scan transverse phase space measurement and a transverse deflecting structure based measurement of longitudinal phase space.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPCC07
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MOPWC01	Building the Third SRF Gun at HZDR	98
	H. Vennekate, A. Arnold, P.N. Lu, P. Murcek, J. Teichert, R. Xiang HZDR, Dresden, Germany
	The multipurpose CW accelerator ELBE at HZDR, which is delivering a large set of secondary beams, is driven by a thermionic DC injector. In order to enhance the machine's beam quality, the development of a superconducting RF injector has been pursued since the early 2000ies. The corresponding ELBE SRF Gun I of 2007 and Gun II of 2014 already delivered beam for the operation of several user beamlines, such as the FEL, positron generation, and THz facility. Currently, the next version ' Gun III ' and its cryomodule are being assembled, characterized, and prepared for the final commissioning throughout late 2017/early 2018. The new module benefits from the experiences in terms of emittance compensation and surveillance of operation variables made with the two predecessors. Results of the latest Gun II operations as well as first commissioning data of the Gun III module will be presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPWC01
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Diagnostics of ELBE SRF Gun - Status and Future Design

53

P.N. Lu, A. Arnold, P. Murcek, J. Teichert, H. Vennekate, R. Xiang
HZDR, Dresden, Germany

Since 2015, Mg photocathodes have been applied for the ELBE SRF gun. Recently, user experiments with a bunch charge of 100 pC and beam transport experiments with 200 pC have been performed. The electron beam diagnostics will be presented, including the slit-scan measurements of the transverse phase space, the quadrupole-scan emittance measurement and the phase-scan bunch length measurement. Principles and results of these diagnostics will be introduced, as well as the error analysis. A UV laser is used to emit electron, the pulse length of which directly impacts the electron beam. A commercial cross correlator has been installed to measure the temporal profile of the UV laser. The alignment of the beam measurement results for this will be presented. Bases on the operation experiences from the current SRF gun, a new gun-lab has been proposed to build and test the next SRF gun in a separated room from the ELBE accelerator. The preliminary design of a new corresponding diagnostics beamline will be presented, featuring a fast beam-scan transverse phase space measurement and a transverse deflecting structure based measurement of longitudinal phase space.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPCC07

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOPWC01

Building the Third SRF Gun at HZDR

98

H. Vennekate, A. Arnold, P.N. Lu, P. Murcek, J. Teichert, R. Xiang
HZDR, Dresden, Germany

The multipurpose CW accelerator ELBE at HZDR, which is delivering a large set of secondary beams, is driven by a thermionic DC injector. In order to enhance the machine's beam quality, the development of a superconducting RF injector has been pursued since the early 2000ies. The corresponding ELBE SRF Gun I of 2007 and Gun II of 2014 already delivered beam for the operation of several user beamlines, such as the FEL, positron generation, and THz facility. Currently, the next version ' Gun III ' and its cryomodule are being assembled, characterized, and prepared for the final commissioning throughout late 2017/early 2018. The new module benefits from the experiences in terms of emittance compensation and surveillance of operation variables made with the two predecessors. Results of the latest Gun II operations as well as first commissioning data of the Gun III module will be presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPWC01

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)