Mk0 was the development configuration (not for sale!)

Mk1 is the linear geometry neutron generator (LNG)

Three basic configurations are offered.

Suited for those applications that require point-like sources

The length of the fusion zone (line source length) can be specified by the customer.

The long version may be engineered to a folded configuration.

This configuration presents only marginally more cost than a single barrel version. It delivers a wall source of neutrons at a cost that cannot be approached by multiple neutron sources. The multi-cylinder layout shares the thermal load and thereby handles more power for greater neutron emission rates.