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Jcc 12

JCC-12™

Inventory Sample Neutron Coincidence Counter INVS

The JCC-12 counter is a field-proven, IAEA-authorized neutron coincidence counter designed for accurate, non-destructive assay of plutonium inventory samples. Developed under U.S. Department of Energy programs and validated by international safeguards authorities, the JCC-12 delivers reliable performance in a compact, transportable form factor — ideal for routine inspections and facility-level nuclear material verification.

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Data Sheet

Tag Features

  • IAEA-Authorized for Safeguards Use: Developed by LANL and approved by the IAEA for routine inspections under INFCIRC/153 agreements
  • Designed for passive neutron coincidence assay of plutonium
  • High Counting Efficiency: 35%
  • Variable Sample Cavity Size for Versatile Sample Handling: Accommodates liquids, powders and pellets; removable polyethylene sleeve allows for larger sample diameters (up to 8.8 cm)
  • Fast pre-amp electronics with greater performance
  • Sixteen 3He detectors
  • Highly portable, with optional transport container, for easier equipment management and flexibility

Description

The JCC-12 is a neutron coincidence counter designed for accurate, non-destructive assay of plutonium inventory samples. It assays plutonium inventory samples by counting coincidence neutrons from the spontaneous fission of the even numbered isotopes of plutonium.

Trusted for Safeguards and Inventory Verification

The JCC-12 counter is based on a design developed at Los Alamos National Laboratories (LANL) in the United States under the United States Department of Energy development programs.

The JCC-12 unit has also been authorized by the International Atomic Energy Agency (IAEA) in Vienna, Austria, for routine inspection use of nuclear material at facilities placed under international safeguards under agreements established by the Non-Proliferation Treaty and Information Circular (INFCIRC) 153 (Revised). The JCC-12 counter was specifically developed to meet IAEA safeguards requirements for the INVS, the Inventory Sample Coincidence Counter by LANL.

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