Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 624, Issue 3, Pages 615-623Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2010.09.148
Keywords
CsI(Na) scintillator; In beam gamma ray spectroscopy; Rare isotope beams
Categories
Funding
- US National Science Foundation [PHY-0722822, PHY-0606007]
- Natural Science and Engineering Research Council (NSERC) of Canada
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We report on the construction and commissioning of the high-efficiency CAESium-iodide scintillator ARray CAESAR a device designed for in-beam gamma-ray spectroscopy experiments utilizing fast beams of rare isotopes at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University (MSU) CAESAR consists of 192 CsI(Na) crystals totaling 290 kg of active scintillator material For 1 MeV gamma rays a full-energy-peak efficiency of 35% is achieved at an in-beam energy resolution of better than 10% FWHM after event-by-event Doppler reconstruction of the gamma rays emitted by nuclei moving with velocities of v/c similar to 0 3-0 4 The spectral quality of the array allows for the identification of gamma-ray transitions with intensities of several 10 counts in the full-energy peak and thus opens new avenues for the study of the most exotic nuclei available at the NSCL for in-beam spectroscopy (C) 2010 Elsevier BV All rights reserved
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