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19 April 2024 |
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Spectator detection for the measurement of proton neutron interactions at ANKE | | I. Lehmann
; S. Barsov
; R. Schleichert
; C. Wilkin
; M. Drochner
; M. Hartmann
; V. Hejny
; S. Merzlyakov
; S. Mikirtychyants
; A. Mussgiller
; D. Protic
; H. Stroher
; S. Trusov
; P. Wustner
; | | Date: |
5 Jan 2007 | | Journal: | Nucl. Instrum. Meth. A 530 (2004) 275-285 | | Abstract: | A telescope of three silicon detectors has been installed close to the internal target position of the ANKE spectrometer, which is situated inside the ultra-high vacuum of the COSY-Juelich light-ion storage ring. The detection and identification of slow protons and deuterons emerging from a deuterium cluster-jet target thus becomes feasible. A good measurement of the energy and angle of such a spectator proton (p_sp) allows one to identify a reaction as having taken place on the neutron in the target and then to determine the kinematical variables of the ion-neutron system on an event-by-event basis over a range of c.m. energies.
The system has been successfully tested under laboratory conditions. By measuring the spectator proton in the p d to p_sp d pi^0 reaction in coincidence with a fast deuteron in the ANKE Forward Detector, values of the p n to d pi^0 total cross-section have been deduced. Further applications of the telescope include the determination of the luminosity and beam polarisation which are required for several experiments. | | Source: | arXiv, nucl-ex/0701008 | | Services: | Forum | Review | PDF | Favorites | |
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