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An effective method for polarising antiprotons | Th. Walcher
; H. Arenhövel
; K. Aulenbacher
; R. Barday
; A. Jankowiak
; | Date: |
15 May 2006 | Subject: | Accelerator Physics | Abstract: | We propose an effective method for polarising antiprotons in a storage ring by means of a parallel moving polarised electron beam. If their relative kinetic energy is adjusted to the order of 1 keV the probability for spin exchange is as large as <sigma P_{zz}> approx 270 barn. Using a 80% polarised electron beam with a peak current of 1.2 A and an average of 32 mA a polarisation of the antiproton beam of 50% in 1.5 hours is achieved under realistic conditions in a 1.8 Tm storage ring. The basis of this proposal are new calculations of the spin transfer cross sections and a state of the art source of polarised electrons. The examples of a specialised low energy polariser ring and the polarisation in a high energy experimental storage ring show that the method is realisable with a polarised electron source based on todays technology. | Source: | arXiv, physics/0605118 | Services: | Forum | Review | PDF | Favorites |
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