Physics
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..apr.h2507d&link_type=abstract
American Physical Society, APS/AAPT Joint April Meeting, April 18-21, 1998 Columbus, Ohio, abstract #H25.07
Physics
Scientific paper
An IU-MSU-WU collaboration is designing and building a new array for detecting isotopically resolved intermediate mass fragments (IMF: 3<=Z<=10) and light charged particles (LCP: Z<=2) with good spatial resolution and low energy thresholds. The first element of each telescope consists of a 5 cm x 5 cm 65 μ m passivated silicon detector. This thin silicon detector is backed by a 500 μ m detector of the same area. These silicon detectors are mounted in a compact geometry which minimizes dead area. To allow detection of LCP, the silicon detectors are backed by 6 cm thick CsI(Tl) crystals with photodiode readout. The 65 μ m silicon has 16 strips on its front surface while the 500 μ m has 16 strips on the front surface with an additional 16 strips oriented orthogonally on the back surface which allows two dimensional position information for both IMFs and LCPs. The array has nine telescopes in a 3x3 arrangement to optimize the measurement of small angle IMF-IMF coincidences in heavy-ion induced multifragmention reactions. Design details, efficiency calculations, and early prototype results will be presented.
Charity Robert J.
Church J.
Davin Brian
deSouza R. T.
Gelbke C. K.
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