Emittance measurements of low-energy beam line at KVI

In this paper is represented the results of beam profile measurements of He-3(+) beam delivered from ECR ion source at KVI. The beam emittance is estimated by varying quadrupole method. The estimated values for the beam emittance at the different profile grid locations along the transport beam line shows that beam emittance in the both, horizontal and vertical planes is not conserved. That means there is a strong-coupling effect and/or the beam is losing through the transport line. (c) 2005 Published by Elsevier B.V.8th International Computational Accelerator Physics Conference, Jun 29-Jul 02, 2004, St Petersburg State Univ, St Petersburg, Russi

Emittance measurements of low-energy beam line at KVI

In this paper is represented the results of beam profile measurements of He-3(+) beam delivered from ECR ion source at KVI. The beam emittance is estimated by varying quadrupole method. The estimated values for the beam emittance at the different profile grid locations along the transport beam line shows that beam emittance in the both, horizontal and vertical planes is not conserved. That means there is a strong-coupling effect and/or the beam is losing through the transport line. (c) 2005 Published by Elsevier B.V

Low energy beam line at the AGOR facility

The origin of the low transmission through the low energy beam line between the electron cyclotron resonance source and the AGOR cyclotron has been investigated. Measurements of beam size and emittance, determined with the varying quadrupole method, are compared with calculations including fringe fields up to third order with the code COSY INFINITY. Calculations and measurements qualitatively agree; the calculations exhibit the large beam losses observed. On the basis of the calculations new settings have been determined, resulting in a significant increase of the transmission. To achieve full transmission a complete redesign of the beam line, in particular of the bending magnets, is needed. (C) 2005 American Institute of Physics

Low energy beam line at the AGOR facility

The origin of the low transmission through the low energy beam line between the electron cyclotron resonance source and the AGOR cyclotron has been investigated. Measurements of beam size and emittance, determined with the "varying quadrupole method," are compared with calculations including fringe fields up to third order with the code COSY INFINITY. Calculations and measurements qualitatively agree; the calculations exhibit the large beam losses observed. On the basis of the calculations new settings have been determined, resulting in a significant increase of the transmission. To achieve full transmission a complete redesign of the beam line, in particular of the bending magnets, is needed. (C) 2005 American Institute of Physics

Low-energy beam line at KVI

This paper describes the redesign of the low-energy beam line at KVI. Redesigned and properties of the optical elements of the transport beam line is done by using the code COSY INFINITY in the third-order of approximation. The effects of fringe fields of the optical elements are also taken into account in the third order of accuracy. Examples of beam transport calculations and emittance measurements are shown in the case of He-3(+). The beam emittance is estimated by varying quadrupole method. By using COSY code it is concluded that the settings of some optical elements in the present design of the beam line should changed to increase the beam transmission. In this way the beam transmission is increased 2-3 times. To achieve higher beam transmission the redesign of the beam line is necessary. (c) 2005 Published by Elsevier B.V

Gezond computeren bij elfjarige kinderen

Het doel van deze studie was het bepalen van de invloed van een lespakket gericht op het aanleren van gezond computergedrag bij kinderen. Vier groepen 7, twee interventie- en twee controlegroepen vulden vooafgaand aan en na de interventie- en twee controlegroepen vulden voorafgaand aan en na de interentie een vragenlijst in met items over computeren, attitude, kennis en computergedrag. De interventie bestond uit het aanbieden van een lespakket "MuisWijs!"