Behrouz Amini

US Patent:

6426681, Jul 30, 2002

Filed:

Oct 23, 2001

Appl. No.:

10/002347

Inventors:

Behrouz Amini - Knoxville TN 37930

International Classification:

H03H 500

US Classification:

333 24R, 333230, 315500, 315 541

Abstract:

A high power adjustable rf coupling loop which is used to interface a transmission line to a resonant cavity is described. The coupling loop is made entirely of metallic parts and therefore is ideal for high power rf applications. Contrary to all existing loops it does not require water cooling Among the unique features of this loop is the fact that it is adjustable. Subsequently the combined impedance of the loop and cavity can be adjusted to match perfectly with the line impedance rendering almost zero reflected power.

US Patent:

6917044, Jul 12, 2005

Filed:

Jan 3, 2002

Appl. No.:

10/036240

Inventors:

Behrouz Amini - Knoxville TN, US

International Classification:

G21G001/00

US Classification:

2504921, 376195, 376194, 376245, 376156

Abstract:

A high power high yield target for the positron emission tomography applications is introduced. For production of Curie level of Fluorine-18 isotope from a beam of proton it uses about one tenth of Oxygen-18 water compared to a conventional water target. The target is also configured to be used for production of all other radioisotopes that are used for positron emission tomography. When the target functions as a water target the material sample being oxygen-18 or oxygen-16 water is heated to steam prior to irradiation using heating elements that are housed in the target body. The material sample is kept in steam phase during the irradiation and cooled to liquid phase after irradiation. To keep the material sample in steam phase a microprocessor monitoring the target temperature manipulates the flow of coolant in the cooling section that is attached to the target and the status of the heaters and air blowers mounted adjacent to the target. When the target functions as a gas target the generated heat from the beam is removed from the target by air blowers and the cooling section. The rupture point of the target window is increased by a factor of two or higher by one thin wire or two parallel thin wires welded at the end of a small hollow tube which is held against the target window.

US Patent:

61309265, Oct 10, 2000

Filed:

Jul 27, 1999

Appl. No.:

9/361602

Inventors:

Behrouz Amini - Knoxville TN

International Classification:

G21G 110

US Classification:

376194

Abstract:

A cyclotron and a target system containing rotating foils composed of target nuclide to undergo nuclear reactions with the beam from the cyclotron are integrated into one unit such that the foils intercept the orbit of the accelerating beam in the cyclotron. Accordingly, the beam strikes the foils to undergo nuclear reaction therein and to correspondingly lose a small portion of its energy in its passage through the foils. The transmitted beam from the foils gains the lost energy to the foils as it circulates in the accelerating zone of the cyclotron and subsequently re-strikes the foils. This process of continuing strikes results in accumulation of the beam current striking the foils and proportionally increases the rate of nuclear reactions. Since the beam after striking the foils is re-circulated and regains the energy loss to the foils, the integrated unit is termed the Recyclotron. The targets are designed to dissipate the heat from the beam load primarily by radiation.