Extended calibration of a CR39 nuclear track detector with 158-A-GeV Pb-207 ions
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5 pages
Published in:
- Nucl.Instrum.Meth.A 411 (1998) 41-45
Citations per year
Abstract: (Elsevier)
Six stacks of nuclear track detectors (CR39 and Makrofol) were exposed to 158 A GeV 207 Pb ions at the CERN-SPS. The main purpose of the experiment was the calibration of the CR39 nuclear track detector used in a large area experimental search for magnetic monopoles at the Gran Sasso Laboratory (the MACRO experiment). Different targets (C, CH 2 , CR39, Cu and Pb) were used in order to study also the fragmentation properties of ultrarelativistic lead nuclei. The exposures were performed at normal incidence and at a density of about 2000 ions/cm 2 . The total number of lead ions in a stack was about 5.8×10 4 . For the stack with the lead target, we measured the base area and the length of the etched cones. We obtain a unique calibration curve for the charge region 7≤ Z ≤83 combining the two types of measurements. Using the cone length method, we obtain a charge resolution σ Z ≃0.19 e for Z =82 ions using a single measurement in one face of CR39.- scattering: heavy ion
- lead
- carbon
- copper
- beam: fragmentation
- plastics: track sensitive
- calibration
- charge: resolution
- MACRO
- CERN SPS
References(5)
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