Thomas J Boyd

US Patent:

20100018218, Jan 28, 2010

Filed:

Jul 25, 2008

Appl. No.:

12/220647

Inventors:

Horace E. Riley - Arlington TX, US
Thomas E. Boyd - Colleyville TX, US

International Classification:

F02C 6/00
F02C 6/06
F25J 3/00
F01N 3/01
F02C 3/22
F02C 3/34

US Classification:

60783, 60 3912, 60 39461, 60 395

Abstract:

A power plant including an air separation unit (ASU) arranged to separate nitrogen, oxygen, carbon dioxide and argon from air and produce a stream of substantially pure liquid oxygen, nitrogen, carbon dioxide and argon; a steam generator, fired or unfired, arranged to combust a fuel, e.g., natural gas, liquefied natural gas, synthesis gas, coal, petroleum coke, biomass, municipal solid waste or any other gaseous, liquid or solid fuel in the presence of air and a quantity of substantially pure oxygen gas to produce an exhaust gas comprising water, carbon dioxide, carbon monoxide, nitrogen oxides, nitrogen, sulfur oxides and other trace gases, and a steam-turbine-generator to produce electricity, a primary gas heat exchanger unit for particulate/acid gas/moisture removal and a secondary heat exchanger arranged to cool the remainder of the exhaust gases from the steam generator. Exhaust gases are liquefied in the ASU thereby recovering carbon dioxide, nitrogen oxides, nitrogen, sulfur oxides, oxygen, and all other trace gases from the steam generator exhaust gas stream. The cooled gases are liquefied in the ASU and separated for sale or re-use in the power plant. Carbon dioxide liquid is transported from the plant for use in enhanced oil recovery or for other commercial use. Carbon dioxide removal is accomplished in the ASU by cryogenic separation of the gases, after directing the stream of liquid nitrogen from the air separation unit to the exhaust gas heat exchanger units to cool all of the exhaust gases including carbon dioxide, carbon monoxide, nitrogen oxides, nitrogen, oxygen, sulfur oxides, and other trace gases.

US Patent:

42874882, Sep 1, 1981

Filed:

Nov 2, 1979

Appl. No.:

6/090846

Inventors:

Charles A. Brau - Los Alamos NM
Donald A. Swenson - Los Alamos NM
Thomas J. Boyd - Los Alamos NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

H01S 309
H01S 314

US Classification:

331 945PE

Abstract:

A free electron laser system and electron beam system for a free electron laser which use rf feedback to enhance efficiency. Rf energy is extracted from an electron beam by decelerating cavities and returned to accelerating cavities using rf returns such as rf waveguides, rf feedthroughs, etc. This rf energy is added to rf klystron energy to lower the required input energy and thereby enhance energy efficiency of the system.

US Patent:

43238572, Apr 6, 1982

Filed:

Dec 12, 1979

Appl. No.:

6/102804

Inventors:

Charles A. Brau - Los Alamos NM
Donald A. Swenson - Los Alamos NM
Thomas J. Boyd - Los Alamos NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

H01S 309

US Classification:

372 2

Abstract:

A catalac free electron laser using a rf linac (catalac) which acts as a catalyst to accelerate an electron beam in an initial pass through the catalac and decelerate the electron beam during a second pass through the catalac. During the second pass through the catalac, energy is extracted from the electron beam and transformed to energy of the accelerating fields of the catalac to increase efficiency of the device. Various embodiments disclose the use of post linacs to add electron beam energy extracted by the wiggler and the use of supplementary catalacs to extract energy at various energy peaks produced by the free electron laser wiggler to further enhance efficiency of the catalac free electron laser. The catalac free electron laser can be used in conjunction with a simple resonator, a ring resonator or as an amplifier in conjunction with a master oscillator laser.

US Patent:

44853467, Nov 27, 1984

Filed:

Jul 15, 1982

Appl. No.:

6/398507

Inventors:

Donald A. Swenson - Los Alamos NM
Thomas J. Boyd - Los Alamos NM
James M. Potter - Los Alamos NM
James E. Stovall - Los Alamos NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

H05H 902
H05H 712

US Classification:

328233

Abstract:

A linear accelerator system includes a plurality of post-coupled drift-tubes wherein each post coupler is bistably positionable to either of two positions which result in different field distributions. With binary control over a plurality of post couplers, a significant accumlative effect in the resulting field distribution is achieved yielding a variable-energy drift-tube linear accelerator.

US Patent:

44792182, Oct 23, 1984

Filed:

Jun 19, 1981

Appl. No.:

6/275478

Inventors:

Charles A. Brau - Los Alamos NM
Donald A. Swenson - Los Alamos NM
Thomas J. Boyd - Los Alamos NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

H01S 300

US Classification:

372 2

Abstract:

A free electron laser and free electron laser amplifier using beam transport devices for guiding an electron beam to a wiggler of a free electron laser and returning the electron beam to decelerating cavities disposed adjacent to the accelerating cavities of the free electron laser. Rf energy is generated from the energy depleted electron beam after it emerges from the wiggler by means of the decelerating cavities which are closely coupled to the accelerating cavities, or by means of a second bore within a single set of cavities. Rf energy generated from the decelerated electron beam is used to supplement energy provided by an external source, such as a klystron, to thereby enhance overall efficiency of the system.