D. Reistad

The New Uppsala Neutron Beam Facility

A new quasi‐monoenergetic neutron beam facility has been constructed at the The Svedberg Laboratory (TSL) in Uppsala, Sweden. Key features include an energy range of 20 to 175 MeV, high fluxes, and the possibility of large‐area fields. Besides cross‐section measurements, the new facility has been designed specifically to provide optimal conditions for testing of single‐event effects in electronics and for dosimetry development. First results of the beam characterization measurements performed in early 2004 are reported.

Development of a compact proton scanning system in Uppsala with a moveable second magnet

A scanned proton beam yields dose distributions that in most cases are superior to passively scattered proton beams and to other external radiation treatment modalities. The present paper gives a description of the scanning system that has been developed at the Svedberg Laboratory (TSL) in Uppsala. The scanning technique and the technical design are described. The solution with a small pole gap of the magnets and a moveable second magnet results in a very compact scanning head, which can therefore be incorporated in a gantry of relatively limited size. A prototype was constructed that has been used to realize various dose distributions with a scanned beam of 180 MeV protons at TSL.

Design of the central region in the Gustaf Werner cyclotron at the Uppsala university

This paper describes the design of the central region in the Gustaf Werner cyclotron for h ¼ 1; 2 and 3 modes of acceleration. The electric field distribution in the inflector and in the four acceleration gaps has been numerically calculated from an electric potential map produced by the program RELAX3D. The geometry of the central region has been tested with the computations of orbits carried out by means of the computer code CYCLONE. The optical properties of the spiral inflector and the central region were studied by using the programs CASINO and CYCLONE, respectively. r 2002 Elsevier Science B.V. All rights reserved.

A facility for studies of giant multipole resonances by fast heavy-ion scattering

Abstract A technique to study giant resonances by heavy-ion scattering in the energy range 100 A –470 A MeV using one quadrant of the CELSIUS storage ring as a spectrometer is presented. A test experiment using 250 A MeV 16 O on a 40 Ar target has been performed. The inelastically scattered particles could be separated from the background originating from the beam halo using a focal-plane telescope in coincidence with neutron detectors around the target. The resolution in the excitation-energy spectrum was 3.5±0.5 MeV, mainly determined by the beam size at the target.

A New Neutron Beam Facility for SEE Testing

A new quasi-monoenergetic neutron beam facility has been constructed at The Svedberg Laboratory in Uppsala, Sweden. The new facility has been designed specifically to provide optimal conditions for testing of single-event effects in electronics. Key features include a neutron energy range of 20 to 175 MeV, high fluxes, user flux control, flexible neutron field size and shape, and spacious and easily accessible user area. Results of beam characterization measurements are reported.

Design and test results of a beam monitor for the CERN linear collider test facility

The monitor for the CERN Linear Collider Test Facility (CTF) requires measurement of the position and intensity of each micro‐bunch (3–50 ps FWHM) at a spacing of 330 ps. The charge of a single bunch is from 109 to 1011 electrons. A monitor designed to meet these requirements is presented. Particular emphasis is given to the sensitivity and frequency response appropriate to such short bunches.

WASA detector: Towards rare pion and eta decays

The WASA 4π detector at the The Svedberg Laboratory in Uppsala is now being commissioned. This detector will make possible new detailed studies of many interesting rare processes in intermediate energy light-ion physics. WASA is built around a new target system, providing well defined internal hydrogen (and deuterium) targets of high density. It has a detection coverage of close to 4π sr for high energy photons and charged particles and it includes a strong magnetic field provided by an extremely thin-walled superconducting solenoid.