Need information or have questions about our products, services, training, or pricing? We are here to help. Please fill out this form or view our office locations for regional phone contacts.
The WM3400 counter measures the plutonium content in 200 L (55 gal) drums by detecting coincidence neutrons from the spontaneous fission of the even numbered isotopes of plutonium.
The WM3400 counter measures the plutonium content in 200 L (55 gal) drums by detecting coincidence neutrons from the spontaneous fission of the even numbered isotopes of plutonium. The counter is designed to make a go/no-go measurement. A JSR-12™ Neutron Coincidence Analyzer is required for coincidence counting, but not included with the WM3400 counter.
The WM3400 unit is a slab of high-density polyethylene attached to a cart. A drum positioning fixture is attached to the front of the polyethylene slab. The drum is rolled up to the counter and the measurement is made. A shelf on the back of the cart can be used to hold the JSR-12 analyzer, and the cart tabletop is available for a portable computer and printer (not included with WM3400 unit).
Six 3He tubes are placed in the slab of high-density polyethylene. The tubes are arranged in a single row, wired together and connected to one JAB-01 Amplifier/Discriminator circuit board. The JAB-01 is mounted inside a high voltage junction box. An LED indicator on the outside of the junction box indicates the proper operation of the JAB-01 channel. Electrical connections between the WM3400 counter and the JSR-12 analyzer include +5 V, HV, and a single "ORed" output signal.