IPAC2011 - List of Authors (Fischer, E.S.)

Paper	Title	Page
WEPC060	Magnetic Field Description in Curved Accelerator Magnets using Local Toroidal Multipoles	2154
	P. Schnizer, E.S. Fischer GSI, Darmstadt, Germany B. Schnizer TUG/ITP, Graz, Austria
	Any introduction on beam dynamics describes the field homogeneity of the accelerator magnets using local derivatives. These are then typically described as plane circular multipoles or 2D harmonics; solutions to the potential equation. The high current operation, foreseen for SIS100 accelerator of FAIR, requires an in detail understanding of the different beam effects, driven by the resonance of the magnets. Therefore different multipole sets were developed and are now finalised in the Local Elliptic Toroidal Multipoles. These are a first order approximation while the plane circular ones are a zero order one in the inverse aspect ratio.

WEPC061	ENC Interaction Region Separation Dipoles	2157
	P. Schnizer, E.S. Fischer GSI, Darmstadt, Germany K. Aulenbacher IKP, Mainz, Germany
	The Electron Nucleon Collider (ENC) is proposed as an upgrade of the High Energy Storage Ringe of the FAIR. The beams are separated by two dipoles, mounted closely to the intraction point; surrounded by the detectors. Hence these magnetsmust provide sufficient field quality but be slim to be transparaent to the secondary particles. Further these must be air coil magnets due to the detector solenoid field of 2T. We present the 3D optimised magnet next to a first design of the mechanical restraint structure and a concise description for the field distortion leaking into the detector.

WEPO024	Design and Operation Parameters of the Superconducting Main Magnets for the SIS100 Accelerator of FAIR	2451
	E.S. Fischer, E. Floch, J. Macavei, P. Schnizer GSI, Darmstadt, Germany P.G. Akishin JINR, Dubna, Moscow Region, Russia A. Mierau TEMF, TU Darmstadt, Darmstadt, Germany
	SIS100, the worlds second large scale synchrotron for ion research, will use superferric magnets. The dipoles are of the window frame type, whose aperture was chosen as an optimum balance between the achievable field quality and AC losses at cryogenic temperatures. Analogous design optimisation was done for the quadrupole and corrector magnets as well. We present the design of the main magnets, estimate their operation parameters and define the crucial aspects to be experimentally analysed before series production, e.g. precise magnetic end field optimisation.

Paper

Title

Page

Magnetic Field Description in Curved Accelerator Magnets using Local Toroidal Multipoles

2154

P. Schnizer, E.S. Fischer
GSI, Darmstadt, Germany
B. Schnizer
TUG/ITP, Graz, Austria

Any introduction on beam dynamics describes the field homogeneity of the accelerator magnets using local derivatives. These are then typically described as plane circular multipoles or 2D harmonics; solutions to the potential equation. The high current operation, foreseen for SIS100 accelerator of FAIR, requires an in detail understanding of the different beam effects, driven by the resonance of the magnets. Therefore different multipole sets were developed and are now finalised in the Local Elliptic Toroidal Multipoles. These are a first order approximation while the plane circular ones are a zero order one in the inverse aspect ratio.

WEPC061

ENC Interaction Region Separation Dipoles

2157

P. Schnizer, E.S. Fischer
GSI, Darmstadt, Germany
K. Aulenbacher
IKP, Mainz, Germany

The Electron Nucleon Collider (ENC) is proposed as an upgrade of the High Energy Storage Ringe of the FAIR. The beams are separated by two dipoles, mounted closely to the intraction point; surrounded by the detectors. Hence these magnetsmust provide sufficient field quality but be slim to be transparaent to the secondary particles. Further these must be air coil magnets due to the detector solenoid field of 2T. We present the 3D optimised magnet next to a first design of the mechanical restraint structure and a concise description for the field distortion leaking into the detector.

WEPO024

Design and Operation Parameters of the Superconducting Main Magnets for the SIS100 Accelerator of FAIR

2451

E.S. Fischer, E. Floch, J. Macavei, P. Schnizer
GSI, Darmstadt, Germany
P.G. Akishin
JINR, Dubna, Moscow Region, Russia
A. Mierau
TEMF, TU Darmstadt, Darmstadt, Germany

SIS100, the worlds second large scale synchrotron for ion research, will use superferric magnets. The dipoles are of the window frame type, whose aperture was chosen as an optimum balance between the achievable field quality and AC losses at cryogenic temperatures. Analogous design optimisation was done for the quadrupole and corrector magnets as well. We present the design of the main magnets, estimate their operation parameters and define the crucial aspects to be experimentally analysed before series production, e.g. precise magnetic end field optimisation.