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Development of a LaBr3(Ce) Fast-timing Array for FAIR

Roberts, OJ, Bruce, AM, Patel, Z, Podolyák, Z, Regan, PH, Townsley, CM, Smith, A, Mulholland, KF and Smith, JF (2013) Development of a LaBr3(Ce) Fast-timing Array for FAIR EPJ Web of Conferences, 63.

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A γ-ray spectrometer with fast-timing capabilities, constructed of LaBr3(Ce:5%) detectors, is under development for use at the future Facility for Anti-proton and Ion Research (FAIR). The physics aims of this device are to measure the half-lives of excited states in the region of ∼50 ps to several ns, in exotic nuclei. Monte-Carlo simulations using the GEANT4 software package have determined the final design of this fast-timing array by calculating the full-energy peak efficiencies of several different detector geometries. The results of the simulated efficiencies for each configuration were used to calculate the timing precision. Consequently, an array of thirty six, ø3.8×5.1 cm cylindrical crystals was found to be the optimum configuration. The detectors were purchased and subsequently characterised, with each detector found to have intrinsic energy and timing resolutions of ∼ 2.8 % (FWHM) and ∼ 210 ps (FWHM) for the 1173 and 1332 keV decays from 60Co. © Owned by the authors, published by EDP Sciences, 2013.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Roberts, OJ
Bruce, AM
Patel, Z
Podolyák, Z
Townsley, CM
Smith, A
Mulholland, KF
Smith, JF
Date : 1 December 2013
DOI : 10.1051/epjconf/20136301018
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:12
Last Modified : 24 Jan 2020 23:36

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