Abstract: A treatment system for evaluating boron sources for boron neutron cancer therapy (BNCT) has a substantially square secondary moderator having a central treatment chamber for a subject; and four substantially identical neutron generators positioned around the substantially square secondary moderator with the axis of each acceleration chamber passing through the center of the treatment chamber.

Abstract: A Boron neutron cancer treatment system has a secondary moderator having a central treatment chamber for a subject, and eight substantially identical neutron generators, each comprising a pre-moderator block. The eight neutron generators are positioned around the secondary moderator with the axis of each acceleration chamber passing through the center of the treatment chamber, and with the angled sides of the neutron generators fully adjacent.

Abstract: A Boron neutron cancer treatment system has a central treatment chamber for a subject, with six substantially identical neutron generators each having an acceleration chamber, the generators positioned around a secondary moderator with the axis of each acceleration chamber passing through center of the treatment chamber, and with angled sides of the neutron generators fully adjacent.

Abstract: A Boron neutron cancer treatment system has a moderator chamber filled with liquid or granular moderator material except for a central treatment chamber, the moderator chamber having parallel upper and lower surfaces, and a plurality of modular neutron generators fully immersed in the liquid or granular moderator material of the moderator chamber.

Abstract: A Boron neutron cancer treatment system has a secondary moderator having a central treatment chamber for a subject, and eight substantially identical neutron generators, each comprising a pre-moderator block. The eight neutron generators are positioned around the secondary moderator with the axis of each acceleration chamber passing through the center of the treatment chamber, and with the angled sides of the neutron generators fully adjacent.

Abstract: A Boron neutron cancer treatment system has a secondary moderator having a central treatment chamber, and several generators, each comprising a pre-moderator block, an acceleration chamber, a vacuum pump engaging the acceleration chamber at a right angle, a plasma ion chamber opening into the acceleration chamber, a gas source providing deuterium gas to the plasma ion chamber, a microwave energy source ionizing the gas in the plasma ion chamber, a cylindrical primary isolation well extending into the pre-moderator block, a secondary isolation well surrounding the primary isolation well, and a water-cooled titanium target disk at a lower extremity of the isolation well. The neutron generators are positioned around the secondary moderator with the axis of each acceleration chamber passing through the center of the treatment chamber, and with the angled sides of the neutron generators fully adjacent.

Abstract: A Boron neutron cancer treatment system has a moderator chamber filled with liquid or granular moderator material except for a central treatment chamber, the moderator chamber having parallel upper and lower surfaces, and a plurality of modular neutron generators fully immersed in the liquid or granular moderator material of the moderator chamber.

Abstract: A treatment system for evaluating boron sources for boron neutron cancer therapy (BNCT) has a substantially square secondary moderator having a central treatment chamber for a subject; and four substantially identical neutron generators positioned around the substantially square secondary moderator with the axis of each acceleration chamber passing through the center of the treatment chamber.

Abstract: A Boron neutron cancer treatment system has a central treatment chamber for a subject, with six substantially identical neutron generators each having an acceleration chamber, the generators positioned around a secondary moderator with the axis of each acceleration chamber passing through center of the treatment chamber, and with angled sides of the neutron generators fully adjacent.

Abstract: A neutron generator has a pre-moderator block of moderating material, an acceleration chamber, a vacuum pump evacuating the acceleration chamber to a moderately high vacuum, a plasma ion chamber opening into the acceleration chamber through an ion extraction iris, a gas source providing deuterium gas to the plasma ion chamber, a microwave energy source ionizing the gas in the plasma ion chamber, a primary and a secondary isolation well extending into the pre-moderator block, a water-cooled titanium target disk positioned at a lower extremity of the primary isolation well, the target disk biased to a substantial negative DC voltage, and electrically grounded metal cladding covering surfaces of the pre-moderator block. Ions extracted through the ion extraction iris are accelerated to bombard the titanium target producing energetic neutrons that pass through and are moderated by the pre-moderator block.

Abstract: A Boron neutron cancer treatment system has a secondary moderator having a central treatment chamber, and several generators, each comprising a pre-moderator block, an acceleration chamber, a vacuum pump engaging the acceleration chamber at a right angle, a plasma ion chamber opening into the acceleration chamber, a gas source providing deuterium gas to the plasma ion chamber, a microwave energy source ionizing the gas in the plasma ion chamber, a cylindrical primary isolation well extending into the pre-moderator block, a secondary isolation well surrounding the primary isolation well, and a water-cooled titanium target disk at a lower extremity of the isolation well. The neutron generators are positioned around the secondary moderator with the axis of each acceleration chamber passing through the center of the treatment chamber, and with the angled sides of the neutron generators fully adjacent.

Abstract: A neutron generator has a pre-moderator block of moderating material, an acceleration chamber, a vacuum pump evacuating the acceleration chamber to a moderately high vacuum, a plasma ion chamber opening into the acceleration chamber through an ion extraction iris, a gas source providing deuterium gas to the plasma ion chamber, a microwave energy source ionizing the gas in the plasma ion chamber, a primary and a secondary isolation well extending into the pre-moderator block, a water-cooled titanium target disk positioned at a lower extremity of the primary isolation well, the target disk biased to a substantial negative DC voltage, and electrically grounded metal cladding covering surfaces of the pre-moderator block. Ions extracted through the ion extraction iris are accelerated to bombard the titanium target producing energetic neutrons that pass through and are moderated by the pre-moderator block.