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Rusek, A.

Paper Title Page
RPAP044 Linearizing the Response of the NSRL Synchronous Recycling-Integrators 2830
 
  • P. Oddo, A. Rusek, T. Russo
    BNL, Upton, Long Island, New York
 
  Funding: Work performed under the auspices of the U.S. Department of Energy.

The LBNL designed recycling-integrators used for the NSRL dosimetry feature excellent linearity. However, switching transients in the balancing source add a duty-cycle dependence to the response that manifests as a non-linearity near mid-scale and a slope-change above mid-scale. The onset of this non-linearity limits the typical usable dynamic range. Measurements during a recent run showed that at higher intensities the recycling-integrators would operate in the non-linear region enough to exceed the desired tolerance and over count the dose. This report will show how a FPGA, which implements the scalars, was used to compensate the non-linearity allowing higher dose-rates by effectively doubling the dynamic range of the dosimetry system.

 
FPAT059 Event Driven Automatic State Modification of BNL's Booster for NASA Space Radiation Laboratory Solor Particle Simulator 3447
 
  • K.A. Brown, S. Binello, M. Harvey, J. Morris, A. Rusek, N. Tsoupas
    BNL, Upton, Long Island, New York
 
  Funding: Work performed under Contract #DE-AC02-98CH10886 with the auspices of the U.S. Department of Energy.

The NASA Space Radiation Laboratory (NSRL) was constructed in collaboration with NASA for the purpose of performing radiation effect studies for the NASA space program. The NSRL makes use of heavy ions in the range of 0.05 to 3 GeV/n slow extracted from BNL's AGS Booster. NASA is interested in reproducing the energy spectrum from a solar flare in the space environment for a single ion species. To do this we have built and tested a set of software tools which allow the state of the Booster and the NSRL beam line to be changed automatically. In this report we will desribe the system and present results of beam tests.