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Device for Indirect Capture Experiments on Radionuclides (DICER)

A general-purpose flight path that was configured for making total cross section measurements.

Contacts  

  • thumbnail of Paul Koehler
  • Instrument Scientist
  • Paul Koehler
  • (505) 606-0743
  • Email

Instrument Specifications

The Device for Indirect Capture Experiments on Radionuclides (DICER) is being developed to measure neutron transmission in the resonance region on small radioactive samples. At present, there is a 6-mm-diameter collimator 30 m from the upper-tier liquid-hydrogen moderator and a 6Li-glass detector at 64 m. Collimation and shielding improvements to reduce backgrounds are ongoing and a beam-flux monitor is being developed. Future plans include an automated sample changer and alignment mechanism, a computer-controlled filter box, smaller sample collimators, and the flexibility to use shorter flight-path lengths. Current DICER proposals should propose samples at least 8 mm in diameter, be on the order of 0.004 to 0.03 at/b thick, and have an average s-wave resonance spacing less than 100 eV to maximize the odds of a successful measurement.

cross section detector FP-13

Total cross section detector set up at 63m in FP-13.