FEL2012 - List of Authors (Milas, N.)

Paper	Title	Page
MOPD37	Switchyard Design: Athos	109
	N. Milas, S. Reiche PSI, Villigen PSI, Switzerland
	The SwissFEL facility will produce coherent, ultrabright and ultra-short photon pulses covering a wavelength range from 0.1 nm to 7 nm, requiring an emittance of 0.43 mm mrad or better. In order to provide electrons to the soft X-ray beam line a switchyard is necessary. This beamline will switch the electron bunch coming from the SwissFEL linac, with an energy of 3.0 GeV, and transport it to Athos. The switchyard has to be designed in such a way to guarantee that beam properties like low emittance, high peak charge and small bunch length will not be spoiled. In order to keep the switchyard as versatile as possible it can work for a range of values of R56 from isochronous up to 6 mm, when the bunch is stretched by a factor two, and also be able to transport the beam in the so called "large bandwidth" mode. In this paper we present the schematics for the switchyard, discuss its many modes of operation, sextupole correction scheme and positioning of energy collimator for machine protection.

THPD19	Technical Overview of SwissFEL Undulator Line	583
	R. Ganter, M. Aiba, H.-H. Braun, C. Calvi, A. Fuchs, P. Heimgartner, E. Hohmann, R. Ischebeck, H. Jöhri, B. Keil, N. Milas, M. Negrazus, S. Reiche, S. Sanfilippo, T. Schmidt, S. Sidorov, P. Wiegand PSI, Villigen PSI, Switzerland
	Starting after Linac 3 at z ~ 430 m (z = 0 being the gun photocathode position), the so-called Aramis Hard-X ray undulator section extends over 170 m, from the energy collimator to the electron beam dump. Electrons enter the undulator section with a maximum energy of 5.8 GeV, a slice emittance below 0.43 μm and a peak current of 3 kA with 200 pC of charge. A prototype of the in-vacuum undulator (U15) is currently under assembly. Most of the other beamline components have been designed and for some of them prototypes are already ordered (quadrupoles, beam position monitors, phase shifters, alignment quadrupoles; mechanical supports; safety components). The paper will describe how constraints like temperature drifts, stray magnetic field, wakefields, beam losses, costs are taken into account for the design of components and building (undulators are however described in details in a companion paper).

Paper

Title

Page

Switchyard Design: Athos

109

N. Milas, S. Reiche
PSI, Villigen PSI, Switzerland

The SwissFEL facility will produce coherent, ultrabright and ultra-short photon pulses covering a wavelength range from 0.1 nm to 7 nm, requiring an emittance of 0.43 mm mrad or better. In order to provide electrons to the soft X-ray beam line a switchyard is necessary. This beamline will switch the electron bunch coming from the SwissFEL linac, with an energy of 3.0 GeV, and transport it to Athos. The switchyard has to be designed in such a way to guarantee that beam properties like low emittance, high peak charge and small bunch length will not be spoiled. In order to keep the switchyard as versatile as possible it can work for a range of values of R56 from isochronous up to 6 mm, when the bunch is stretched by a factor two, and also be able to transport the beam in the so called "large bandwidth" mode. In this paper we present the schematics for the switchyard, discuss its many modes of operation, sextupole correction scheme and positioning of energy collimator for machine protection.

THPD19

Technical Overview of SwissFEL Undulator Line

583

R. Ganter, M. Aiba, H.-H. Braun, C. Calvi, A. Fuchs, P. Heimgartner, E. Hohmann, R. Ischebeck, H. Jöhri, B. Keil, N. Milas, M. Negrazus, S. Reiche, S. Sanfilippo, T. Schmidt, S. Sidorov, P. Wiegand
PSI, Villigen PSI, Switzerland

Starting after Linac 3 at z ~ 430 m (z = 0 being the gun photocathode position), the so-called Aramis Hard-X ray undulator section extends over 170 m, from the energy collimator to the electron beam dump. Electrons enter the undulator section with a maximum energy of 5.8 GeV, a slice emittance below 0.43 μm and a peak current of 3 kA with 200 pC of charge. A prototype of the in-vacuum undulator (U15) is currently under assembly. Most of the other beamline components have been designed and for some of them prototypes are already ordered (quadrupoles, beam position monitors, phase shifters, alignment quadrupoles; mechanical supports; safety components). The paper will describe how constraints like temperature drifts, stray magnetic field, wakefields, beam losses, costs are taken into account for the design of components and building (undulators are however described in details in a companion paper).