Magnex Spectrometer for the INFN-LNS, Italy

Magnets

The Danfysik accelerator magnet program covers standard and custom-built resistive magnets, reaching from small correctors to very large spectrometer magnets of more than 100 metric tons. Opera 2D and 3D is used for magnetic field modeling, Autodesk Inventor for mechanical design and COSMOS for finite element calculations of mechanical structures. Vacuum impregnated hollow conductor magnet coils are made in-house.
Magnetic field documentation is performed using a rotating coil system and a x-y-z Hall probe mapping system.

Danfysik offers complete magnet systems including vacuum chambers, supporting stands and matching power supplies.

Danfysik accelerator magnet program covers

Dipole magnets
Quadrupole magnets
Multipole magnets
Spectrometer magnets
Kickers, Septums and Bumper magnets
Scanning magnets
Solid yoke and laminated yoke constructions

Also the following related services are available

Beam optical calculations
Vacuum calculation and design
On-site Installation

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Magnex Spectrometer for the INFN-LNS, Italy

Description

Danfysik has made the Magnex Spectrometer for the INFN-LNS in Catania, Italy

Data

Dipole
Bend angle
55°
Bending Radius
1600 mm
Maximum field
1.15 T
Quadrupole
Aperture radius
200mm
Effective length
58 cm
Field strength
5 T/m

MAGNEX Spectrometer, a large acceptance Magnetic spectrometer for the Radioactive Ion Beam Facility EXCYT, installed at the INFN-LNS in Catania, Italy.

Project start 2001. Project completion 2002.

The advent of new facilities for the production of Radioactive Ion Beams (RIB) at LNS, Catania opens a new research field. This field involves the study of nuclear structure and reaction dynamics induced by nuclei with particular properties such as large values of isospin, haloes, large deformation, and the measurement of nuclear observables of astrophysical interest.

The Magnex Spectrometer is an important component at this facility. MAGNEX is a general purpose device to be used both in inclusive measurements and in coincidence with other detectors. The second and higher-order optical aberrations are partially compensated for by the shape of the dipole entrance and exit field boundaries (hardware correction), and partially by means of trajectory reconstruction (software correction).

The large acceptance spectrometer require very high magnetic and optical performance. Prior to manufacture Danfysik performed a comprehensive design review including 2D and 3D field calculations. A set of surface coils mounted on the dipole pole faces provide tuneable quadrupolar and sextupolar fields used for the compensation of the kinematic effect up to 2^nd order. Extensive field measurements were performed in our factory prior to shipment to Italy.

A set of surface coils mounted on the dipole pole faces provides tuneable quadrupolar and sextupolar fields used for the compensation of the kinematic effect up to 2^nd order. MAGNEX is designed to correct kinematic factors from 0.0 to -0.5 rad^-1.
Danfysik has over the years built a number of large and demanding spectrometer magnets for accelerator laboratories world wide, one important example is the Magnex device.