Positron extraction to an electromagnetic field free region. (24th November 2015)

• Record Type: Journal Article
• Authors: Cooke, D A; Barandun, G; Vergani, S; Brown, B; Rubbia, A; Crivelli, P
• Is Part Of: Journal of physics. Volume 49:Number 1(2016:Jan. 01)
• Publication Date: 2015-11-24
• Subjects: positron beam -- buffer gas trap -- magnetic field -- time bunching; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/0953-4075/49/1/014001
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: We describe a scheme for high efficiency ( ) extraction of 50 ns positron bunches from a buffer gas trap in an electromagnetic field free region. The positrons are time bunched to approximately 1 ns (FWHM) and focussed to less than 1 mm ( σ ). The target is kept at ground potential which is an advantage for many applications. The results compare well with SIMION simulations.