calutron

Several even said they believed the Iraqis had a covert calutron program going as well.

"A calutron, on the other hand, in one stage enriches a large amount.

The smaller calutron facility was located in Building 245, and included room for about 20 calutrons.

It was equipped with some 30 calutron machines used for enriching uranium.

A calutron is a mass spectrometer used for separating the isotopes of uranium.

A calutron is used to separate uranium isotopes and produce enriched uranium.

The name calutron derives from California University cyclotron.

"Iraq's use of the calutron electromagnetic method for separating weapons-grade uranium came as quite a surprise.

Lawrence develops the Calutron for uranium isotope separation.

Properly the term 'Calutron' applies to a multistage device arranged in a large oval around a powerful electromagnet.

At this same site, the Iraqis built a multimillion-dollar "chemical wash" facility for recovering uranium from refurbished calutron components.

But another official expressed concern that Iran might be able to improve on and duplicate the calutron to eventually produce the hundreds needed to enrich uranium.

Then runs could begin on the first production system, or "racetrack;" a 24-fold magnification of the XA that could hold 96 calutron alpha tanks.

The gaseous diffusion procedure for separation of uranium isotopes, which had consumed more money than the calutron, had not met its design goals by late 1944.

(Centrifuge and calutron operations allow a country to enrich uranium and produce the fissile material for a nuclear bomb.)

In 1943, Walter Roman's design department was relocated to the Oak Ridge plant because numerous redesigns of calutron parts were necessary.

The Post said that China recently sold Iran calutron equipment that is considered capable to producing highly enriched uranium through a process of electromagnetic isotope separation.

Lawrence asked Thornton to return to help with development of the calutron project, a gigantic array of modified cyclotrons adapted to the separation of uranium isotopes.

After the 1990 Gulf War, UNSCOM determined that Iraq had been pursuing a calutron program to enrich uranium.

A Matter of Concern' The Administration has also learned that Iran recently received a calutron, a crude device that can be used to enrich uranium, from Beijing.

The Tarmiyah large-scale calutron facility was located in Building 33, which was over 100 meters long, which had the capability to support about 100 calutron units.

An ordinary mass spectrometer is designed to analyse the composition of very small samples; the calutron uses the same principle, but is designed to separate substantial quantities of known isotopes.

The prototype of the magnets to be installed at Oak Ridge, XA was a rectangular, three-coil magnet giving a horizontal field in which the calutron tanks could stand side-by-side.

Although electromagnetic separation is a slow and costly way of producing enriched uranium, officials say that the machinery needed to build a calutron is readily available and could be ordered without arousing suspicion.

To augment the calutron feed, the Manhattan Engineering District constructed a further plant at Oak Ridge, this one working by thermal diffusion, a method developed by Philip Abelson.