IBIC2014 - List of Keywords (SRF)

Paper	Title	Other Keywords	Page
MOPF27	Simulation and First Results of the ELBE SRF Gun II	gun, laser, simulation, cavity	106
	P.N. Lu, A. Arnold, U. Lehnert, P. Murcek, J. Teichert, H. Vennekate, R. Xiang HZDR, Dresden, Germany
	In Rossendorf, a 3 and one half cell cavity SRF photo injector has been installed, which promises to accelerate the electron beam to 9 MeV in 0.5 meter. The gun is expected to operate both in the 13 MHz mode with a bunch charge of 77 pC, or in the 500 kHz mode, with a 1 nC charge. The simulation presented in this contribution includes particle tracking in the new cavity itself with the ASTRA code, and in the bunch transport line in the ELBE beam lines with the elegant code. The measured profile and time structure of the UV laser on the cathode are utilized to specify the electron bunch parameters. Then a single bunch of electrons is tracked in the cavity field that was calculated by Superfish, with space charge effects considered. From the exit of the cavity, the electron bunch has a relatively high energy so we ignore the space charge effect there and apply elegant to track the particles through the magnet elements and accelerator modules. The main purpose of this simulation is to find the optimized parameters for different beam transport tasks. As a first experimental result of the photoinjector, energy and phase space measurement will be also presented in the paper. Both the slit mask and the quadrupole scan methods are applied to measure the beam emittance. An obvious progression will be to compare the results from this gun with those from the ELBE SRF gun I.
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WEPF19	Fast Transverse Phase Space Measurement System for GunLab - A Compact Test Beamline for SRF Photoinjectors	emittance, electron, quadrupole, gun	588
	J. Völker, T. Kamps HZB, Berlin, Germany
	Superconducting radiofrequency photo electron injectors (SRF guns) are promising electron sources for the next generation of electron linear accelerators. The energy recovery linac (ERL) BERLinPro will employ a 1.5 cell 1.3 GHz SRF gun cavity with normal conducting high quantum efficiency photocathode to produce a 100mA CW electron beam with high brightness. We are currently working on a compact test beamline (GunLab) to investigate the properties of the electron beam and to optimize the drive laser as well RF parameters. The motivation for GunLab is to decouple the SRF gun development from the ERL development. The goal is to measure not only the complete 6 dimensional phase space of the extracted and accelerated bunches but also to investigate dark current and beam halo. In this paper we will discuss unique features of GunLab for the phase space measurements.
	Poster WEPF19 [2.025 MB]
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Paper

Title

Other Keywords

Page

MOPF27

Simulation and First Results of the ELBE SRF Gun II

gun, laser, simulation, cavity

106

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

In Rossendorf, a 3 and one half cell cavity SRF photo injector has been installed, which promises to accelerate the electron beam to 9 MeV in 0.5 meter. The gun is expected to operate both in the 13 MHz mode with a bunch charge of 77 pC, or in the 500 kHz mode, with a 1 nC charge. The simulation presented in this contribution includes particle tracking in the new cavity itself with the ASTRA code, and in the bunch transport line in the ELBE beam lines with the elegant code. The measured profile and time structure of the UV laser on the cathode are utilized to specify the electron bunch parameters. Then a single bunch of electrons is tracked in the cavity field that was calculated by Superfish, with space charge effects considered. From the exit of the cavity, the electron bunch has a relatively high energy so we ignore the space charge effect there and apply elegant to track the particles through the magnet elements and accelerator modules. The main purpose of this simulation is to find the optimized parameters for different beam transport tasks. As a first experimental result of the photoinjector, energy and phase space measurement will be also presented in the paper. Both the slit mask and the quadrupole scan methods are applied to measure the beam emittance. An obvious progression will be to compare the results from this gun with those from the ELBE SRF gun I.

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reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPF19

Fast Transverse Phase Space Measurement System for GunLab - A Compact Test Beamline for SRF Photoinjectors

emittance, electron, quadrupole, gun

588

J. Völker, T. Kamps
HZB, Berlin, Germany

Superconducting radiofrequency photo electron injectors (SRF guns) are promising electron sources for the next generation of electron linear accelerators. The energy recovery linac (ERL) BERLinPro will employ a 1.5 cell 1.3 GHz SRF gun cavity with normal conducting high quantum efficiency photocathode to produce a 100mA CW electron beam with high brightness. We are currently working on a compact test beamline (GunLab) to investigate the properties of the electron beam and to optimize the drive laser as well RF parameters. The motivation for GunLab is to decouple the SRF gun development from the ERL development. The goal is to measure not only the complete 6 dimensional phase space of the extracted and accelerated bunches but also to investigate dark current and beam halo. In this paper we will discuss unique features of GunLab for the phase space measurements.

Poster WEPF19 [2.025 MB]

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reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)