IPAC2012 - List of Authors (Wuestefeld, G.)

Paper

Title

Page

Modifications to the Machine Optics of BESSY II Necessitated by the EMIL Project

1614

P.O. Schmid, J. Bahrdt, T. Birke, R. Follath, P. Kuske, D. Simmering, G. Wüstefeld
HZB, Berlin, Germany

The Helmholtz Zentrum Berlin and the Max Planck Society are going to build a new dedicated X-ray beam line at the synchrotron source light source BESSY II which will be used for analyzing materials for renewable energy generation. The new large scale project has been dubbed EMIL. In this document we present the modifications to the machine optics and to what extent these changes affect the performance of BESSY II.

WEPPR046

THz Bursting Thresholds Measured at the Metrology Light Source

3030

M. Ries, J. Feikes, P.O. Schmid, G. Wüstefeld
HZB, Berlin, Germany
A. Hoehl
PTB, Berlin, Germany

At the Metrology Light Source (MLS) * of the Physikalisch-Technische Bundesanstalt (PTB) the bunch length can be varied by more than two orders of magnitude **. The bunch length manipulation is achieved by varying different machine parameters, such as rf-voltage amplitude up to 500 kV and the momentum compaction factor over three orders of magnitude. The subject of this article is the measurement of THz bursting thresholds at the MLS for different bunch lengths.
* B. Beckhoff et al., Phys. Status Solidi B 246, p. 1415 (2009)
** J. Feikes et al., Phys. Rev. ST Accel. Beams 14, 030705 (2011).

FRXAB01

Symplectic Tracking and Compensation of Dynamic Field Integrals in Complex Undulator Structures

4165

J. Bahrdt, G. Wüstefeld
HZB, Berlin, Germany

This presentation covers analytical models that describe the interaction of an electron beam with the magnetic field of undulators. Analytic approximations to the Hamilton-Jacobi equation yield generating functions useful for particle tracking and therefore efficient simulation. Analytic expressions for kick maps of APPLE II undulators are presented as well. Passive and active shimming schemes including magic fingers and current sheets are also modeled. Applications at BESSY II are discussed which ensure efficient injection during top-up to satisfy machine protection and radiation safety requirements.

Slides FRXAB01 [1.922 MB]

Paper	Title	Page
TUPPP007	Modifications to the Machine Optics of BESSY II Necessitated by the EMIL Project	1614
	P.O. Schmid, J. Bahrdt, T. Birke, R. Follath, P. Kuske, D. Simmering, G. Wüstefeld HZB, Berlin, Germany
	The Helmholtz Zentrum Berlin and the Max Planck Society are going to build a new dedicated X-ray beam line at the synchrotron source light source BESSY II which will be used for analyzing materials for renewable energy generation. The new large scale project has been dubbed EMIL. In this document we present the modifications to the machine optics and to what extent these changes affect the performance of BESSY II.

WEPPR046	THz Bursting Thresholds Measured at the Metrology Light Source	3030
	M. Ries, J. Feikes, P.O. Schmid, G. Wüstefeld HZB, Berlin, Germany A. Hoehl PTB, Berlin, Germany
	At the Metrology Light Source (MLS) * of the Physikalisch-Technische Bundesanstalt (PTB) the bunch length can be varied by more than two orders of magnitude *. The bunch length manipulation is achieved by varying different machine parameters, such as rf-voltage amplitude up to 500 kV and the momentum compaction factor over three orders of magnitude. The subject of this article is the measurement of THz bursting thresholds at the MLS for different bunch lengths. B. Beckhoff et al., Phys. Status Solidi B 246, p. 1415 (2009) ** J. Feikes et al., Phys. Rev. ST Accel. Beams 14, 030705 (2011).

FRXAB01	Symplectic Tracking and Compensation of Dynamic Field Integrals in Complex Undulator Structures	4165
	J. Bahrdt, G. Wüstefeld HZB, Berlin, Germany
	This presentation covers analytical models that describe the interaction of an electron beam with the magnetic field of undulators. Analytic approximations to the Hamilton-Jacobi equation yield generating functions useful for particle tracking and therefore efficient simulation. Analytic expressions for kick maps of APPLE II undulators are presented as well. Passive and active shimming schemes including magic fingers and current sheets are also modeled. Applications at BESSY II are discussed which ensure efficient injection during top-up to satisfy machine protection and radiation safety requirements.
	Slides FRXAB01 [1.922 MB]