IPAC2013 - List of Authors (Barna, D.)

Paper	Title	Page
MOPFI061	Concept for Elena Extraction and Beam Transfer Elements	422
	J. Borburgh, B. Balhan, W. Bartmann, T. Fowler, L. Sermeus, G. Vanbavinckhove CERN, Geneva, Switzerland R.A. Baartman TRIUMF, Vancouver, Canada D. Barna University of Tokyo, Tokyo, Japan V. Pricop Transilvania University of Brasov, Brasov, Romania
	In 2011 the ELENA decelerator was approved as a CERN project. Initially one extraction was foreseen, which should use a kicker and a magnetic septum which can be recuperated from an earlier installation. Since then a second extraction has been approved and a new solution was studied using only electric fields to extract the beam. This will be achieved by fast pulsing a separator, allowing single-bunch but also a full single-turn extraction from ELENA towards the experiments. The extraction and transfer requirements of ELENA are described, followed by the principal differences between the magnetic and electric field concepts. The design of electrostatic focussing and bending devices for the transfer lines will be presented. Finally the field quality which can be achieved with the separator and the concept of its power supply will be discussed.

TUPWO051	Geometry and Optics of the Electrostatic ELENA Transfer Lines	1985
	G. Vanbavinckhove, W. Bartmann, F. Butin, O. Choisnet CERN, Geneva, Switzerland R.A. Baartman TRIUMF, Vancouver, Canada D. Barna, H. Yamada University of Tokyo, Tokyo, Japan
	The future ELENA ring at CERN will decelerate the AD antiproton beam further from 5.3 MeV to 100 keV kinetic energy, to increase the efficiency of antiproton trapping. At present there are four experimental areas in the AD hall which will be complemented with the installation of ELENA by additional three experiments and an additional source for commissioning. This paper describes the optimisation of the transfer line geometry, ring rotation and source position. The optics of the transfer lines and error studies to define field and alignment tolerances are shown, and the optics particularities of electrostatic elements and their optimisation highlighted.

Paper

Title

Page

Concept for Elena Extraction and Beam Transfer Elements

422

J. Borburgh, B. Balhan, W. Bartmann, T. Fowler, L. Sermeus, G. Vanbavinckhove
CERN, Geneva, Switzerland
R.A. Baartman
TRIUMF, Vancouver, Canada
D. Barna
University of Tokyo, Tokyo, Japan
V. Pricop
Transilvania University of Brasov, Brasov, Romania

In 2011 the ELENA decelerator was approved as a CERN project. Initially one extraction was foreseen, which should use a kicker and a magnetic septum which can be recuperated from an earlier installation. Since then a second extraction has been approved and a new solution was studied using only electric fields to extract the beam. This will be achieved by fast pulsing a separator, allowing single-bunch but also a full single-turn extraction from ELENA towards the experiments. The extraction and transfer requirements of ELENA are described, followed by the principal differences between the magnetic and electric field concepts. The design of electrostatic focussing and bending devices for the transfer lines will be presented. Finally the field quality which can be achieved with the separator and the concept of its power supply will be discussed.

TUPWO051

Geometry and Optics of the Electrostatic ELENA Transfer Lines

1985

G. Vanbavinckhove, W. Bartmann, F. Butin, O. Choisnet
CERN, Geneva, Switzerland
R.A. Baartman
TRIUMF, Vancouver, Canada
D. Barna, H. Yamada
University of Tokyo, Tokyo, Japan

The future ELENA ring at CERN will decelerate the AD antiproton beam further from 5.3 MeV to 100 keV kinetic energy, to increase the efficiency of antiproton trapping. At present there are four experimental areas in the AD hall which will be complemented with the installation of ELENA by additional three experiments and an additional source for commissioning. This paper describes the optimisation of the transfer line geometry, ring rotation and source position. The optics of the transfer lines and error studies to define field and alignment tolerances are shown, and the optics particularities of electrostatic elements and their optimisation highlighted.