ERL2013 - List of Authors (Aulenbacher, K.)

Paper

Title

Page

Status of the MESA Accelerator

1

K. Aulenbacher, J. Diefenbach, R.G. Heine, F. Schlander
IKP, Mainz, Germany

Funding: Supported by the German Science Foundation (DFG) through Excellence cluster PRISMA
The Mainz Energy recovering Superconducting Accelerator (MESA) is now being set up at the institute für Kernphysik, university of Mainz. MESA is intended to serve as a test bed for multi-turn superconducting ERL's. It also has a strong fundamental physics component, since electron scattering from a "pseudo" internal target will provide a new regime of experimental research. On the other hand, MESA may also be operated as a conventional c.w. accelerator with polarized external beam. The latter mode is foreseen to be used for a precision measurement of the Weinberg angle. The project is still in its conceptional phase, different options for r.f.-systems and lattices will be presented.

Slides PLT01 [2.702 MB]

WG401

Electron Polarimetry for ERLs

66

K. Aulenbacher
IKP, Mainz, Germany

Funding: This work was funded by the german science foundation under Project number 05H12UM6 (Spin Optimierung)
ERL's which are supposed to be used for particle physics experiments have to be equipped with an electron polarimeter. Such devices must be compatible with ERL-operation, i.e. minimally invasive. The Compton-Laser device may be the method of choice, scattering from trapped completely polarized electrons in an atomic trap could be an alternative. The principles of operation of both methods are discussed.

Slides WG401 [0.935 MB]

WG502

Longitudinal Beam Halo in the Photoemission from GaAs-Photocathodes in a 100keV DC Gun

72

M.A. Dehn, K. Aulenbacher, F. Fichtner, E. Kirsch, V. Tioukine
IKP, Mainz, Germany

At Johannes Gutenberg-University Mainz measurements of the time response of photocathodes can be performed routinely at the 'Testquellenlabor' (source testlab) using a deflector cavity. Short electron bunches are generated using a femtosecond tunable laser system operating at 800 nm for best polarization/QE if GaAs is used. In our experiment the laser radiation is also frequency-doubled to 400 nm in order to compare the time response at different wavelengths. First measurements show a strong reduction of the longitudinal beam profile at 400nm without the trailing electrons which are typically observed at 800 nm.

Slides WG502 [0.784 MB]

Paper	Title	Page
PLT01	Status of the MESA Accelerator	1
	K. Aulenbacher, J. Diefenbach, R.G. Heine, F. Schlander IKP, Mainz, Germany
	Funding: Supported by the German Science Foundation (DFG) through Excellence cluster PRISMA The Mainz Energy recovering Superconducting Accelerator (MESA) is now being set up at the institute für Kernphysik, university of Mainz. MESA is intended to serve as a test bed for multi-turn superconducting ERL's. It also has a strong fundamental physics component, since electron scattering from a "pseudo" internal target will provide a new regime of experimental research. On the other hand, MESA may also be operated as a conventional c.w. accelerator with polarized external beam. The latter mode is foreseen to be used for a precision measurement of the Weinberg angle. The project is still in its conceptional phase, different options for r.f.-systems and lattices will be presented.
	Slides PLT01 [2.702 MB]

WG401	Electron Polarimetry for ERLs	66
	K. Aulenbacher IKP, Mainz, Germany
	Funding: This work was funded by the german science foundation under Project number 05H12UM6 (Spin Optimierung) ERL's which are supposed to be used for particle physics experiments have to be equipped with an electron polarimeter. Such devices must be compatible with ERL-operation, i.e. minimally invasive. The Compton-Laser device may be the method of choice, scattering from trapped completely polarized electrons in an atomic trap could be an alternative. The principles of operation of both methods are discussed.
	Slides WG401 [0.935 MB]

WG502	Longitudinal Beam Halo in the Photoemission from GaAs-Photocathodes in a 100keV DC Gun	72
	M.A. Dehn, K. Aulenbacher, F. Fichtner, E. Kirsch, V. Tioukine IKP, Mainz, Germany
	At Johannes Gutenberg-University Mainz measurements of the time response of photocathodes can be performed routinely at the 'Testquellenlabor' (source testlab) using a deflector cavity. Short electron bunches are generated using a femtosecond tunable laser system operating at 800 nm for best polarization/QE if GaAs is used. In our experiment the laser radiation is also frequency-doubled to 400 nm in order to compare the time response at different wavelengths. First measurements show a strong reduction of the longitudinal beam profile at 400nm without the trailing electrons which are typically observed at 800 nm.
	Slides WG502 [0.784 MB]