Physics
Scientific paper
Oct 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..dnp5p1017n&link_type=abstract
American Physical Society, 2002 Fall Meeting of the Division of Nuclear , abstract #5P1.017
Physics
Scientific paper
A new High Resolution Array (HiRA) is being constructed for experiments with rare isotope beams at the NSCL. It consists of twenty independent strip detector telescopes, which offer considerable flexibility in experimental setup. Each telescope is composed of two silicon strip detectors, 4 CsI(Tl) detectors and the necessary electronics, which includes a custom designed ASIC for the silicon strip detector readout. The thicknesses of the silicon detectors were selected to optimize the energy resolution for light particle detection over a wide range of particle energies. One of the silicon strip detectors is double-sided; the charge collected in orthogonal strips on opposite sides of this detector provide an x and y coordinate for each event in the telescope. The 1.9mm pitch in these detectors allows an approximate angular resolution of +/- .1 deg at a distance of 60cm. The silicon detectors are followed by 4 CsI(Th) scintillation detectors for detection of more energetic particles. High angular accuracy is needed for many proposed experiments with the array. This will be achieved with a semi-automated alignment procedure that utilizes a laser based optical triangulation sensor and precision stepper motor driven rotational stages.
Alfaro-Molina
Caraley
Davin
de Souza
Elson
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