John Patrick Noonan

US Patent:

6987361, Jan 17, 2006

Filed:

Jul 8, 2004

Appl. No.:

10/887142

Inventors:

John W. Lewellen - Plainfield IL, US
John Noonan - Naperville IL, US

Assignee:

The University of Chicago - Chicago IL

International Classification:

H01J 25/00

US Classification:

315 535, 315 541, 315 393

Abstract:

A novel method of gating electron emission from field-emitter cathodes for radio frequency (RF) electrode guns and a novel cathode that provides a focused electron beam without the need for magnetic fields or a curved cathode surface are provided. The phase and strength of a predefined harmonic field, such as the 3rd harmonic field, are adjusted relative to a fundamental field to cause a field emission cathode to emit electrons at predefined times for the generation of high-brightness electron beams. The emission time is gated responsive to the combined harmonic and fundamental fields and the response of the FE cathode to the combined fields. A planar focusing cathode includes a selected dielectric material, such as a ceramic material, to provide an electron beam emission surface. Metal surfaces are provided both radially around and behind the dielectric material to shape the electric fields that accelerate and guide the beam from the cathode surface.

US Patent:

7250727, Jul 31, 2007

Filed:

Jun 2, 2005

Appl. No.:

11/143417

Inventors:

John W. Lewellen - Plainfield IL, US
John Noonan - Naperville IL, US

Assignee:

UChicago Argonne LLC - Chicago IL

International Classification:

H01J 7/24

US Classification:

31511141, 31511181

Abstract:

Beam processing methods including e-beam welding and e-beam evaporation for thin film deposition are implemented with a novel high power, long focus electron source. The high power, long focus electron source generates an e-beam. The e-beam is transported through a series of steering magnets to steer the beam. At least one refocusing magnet is provided to refocus the e-beam. A final steering magnet bends the e-beam to focus on a target, such as a weld joint or a deposition target.

US Patent:

7312461, Dec 25, 2007

Filed:

Jun 2, 2005

Appl. No.:

11/143837

Inventors:

John W. Lewellen - Plainfield IL, US
John Noonan - Naperville IL, US

Assignee:

UChicago Argonne LLC - Chicago IL

International Classification:

H01J 1/50

US Classification:

250396ML, 2504923, 2504921, 25045511, 2505051, 2502061, 2502062, 2502082, 378197, 378 17, 378 65, 378119, 378145, 378 64, 378137, 378138, 378121, 315 541, 315 542, 356400, 356138, 600 1, 600 3, 600427, 600 9, 607101, 424 149, 424 157, 424 169, 424 934, 424 185

Abstract:

A laparoscopic tumor therapy method and an articulated electron beam transport system are provided for use with a high power, long focus electron source for tumor therapy. The high power, long focus electron source generates an e-beam. The e-beam is transported through a laparoscopic tube proximate a target tumor for electron irradiation therapy.

US Patent:

7394201, Jul 1, 2008

Filed:

Oct 11, 2005

Appl. No.:

11/248661

Inventors:

John W. Lewellen - Plainfield IL, US
John Noonan - Naperville IL, US

Assignee:

UChicago Argonne, LLC - Chicago IL

International Classification:

H01J 25/00

US Classification:

315 535, 315 541, 315 393

Abstract:

A novel method of gating electron emission from field-emitter cathodes for radio frequency (RF) electrode guns and a novel cathode that provides a focused electron beam without the need for magnetic fields or a curved cathode surface are provided. The phase and strength of a predefined harmonic field, such as the 3rd harmonic field, are adjusted relative to a fundamental field to cause a field emission cathode to emit electrons at predefined times for the generation of high-brightness electron beams. The emission time is gated responsive to the combined harmonic and fundamental fields and the response of the FE cathode to the combined fields. A planar focusing cathode includes a selected dielectric material, such as a ceramic material, to provide an electron beam emission surface. Metal surfaces are provided both radially around and behind the dielectric material to shape the electric fields that accelerate and guide the beam from the cathode surface.

US Patent:

7573053, Aug 11, 2009

Filed:

Jan 22, 2007

Appl. No.:

11/625454

Inventors:

John W. Lewellen - Willowbrook IL, US
John Noonan - Naperville IL, US

Assignee:

UChicago Argonne, LLC - Chicago IL

International Classification:

H01J 37/73

US Classification:

2504931, 250306, 250307, 250310, 250311, 250400, 313542, 313544

Abstract:

A method and an electron source are provided for generating polarized electrons for an electron microscope. The electron source includes a photoemissive cathode and a low-power drive laser. The geometry of the photoemissive cathode uses a generally planar emission surface, which is imaged to approximately 1/100 its initial size via electrostatic focusing elements. The virtual emitter, or image spot, then is used as an electron source by a conventional microscope column.

US Patent:

7760054, Jul 20, 2010

Filed:

May 10, 2007

Appl. No.:

11/747021

Inventors:

John W. Lewellen - Willowbrook IL, US
John Noonan - Naperville IL, US
Terry L. Smith - Plainfield IL, US
Geoff Waldschmidt - Bolingbrook IL, US

Assignee:

UChicago Argonne, LLC - Chicago IL

International Classification:

H01P 7/06

US Classification:

333227, 333231, 333235, 372 29022, 315 516, 315501

Abstract:

An RF cavity is provided with a plurality of tubes that are formed into a tubular cage in a predefined shape to define the RF cavity. A selected number of tubes and a selected tube diameter are provided to form a confinement cage for the RF fields within the RF cavity defined by the tubes. The multiple, small metal tubes are selectively bent to form different cavity shapes and sizes as needed to accelerate the particles and function as a confinement cage for the RF fields within the RF cavity defined by the tubes. The cost to fabricate RF cavities using the tubular cage design is significantly lower than the cost of producing a solid cavity using conventional fabrication technology.

US Patent:

20130083880, Apr 4, 2013

Filed:

Sep 29, 2011

Appl. No.:

13/248209

Inventors:

John Noonan - Naperville IL, US
Dean Walters - Darien IL, US
Matt Virgo - Chicago IL, US
John Lewellen - Seaside CA, US

Assignee:

UCHICAGO ARGONNE, LLC - Chicago IL

International Classification:

G21G 1/10
H05H 9/00

US Classification:

376190, 315505

Abstract:

A method and isotope linac system are provided for producing radio-isotopes and for recovering isotopes. The isotope linac is an energy recovery linac (ERL) with an electron beam being transmitted through an isotope-producing target. The electron beam energy is recollected and re-injected into an accelerating structure. The ERL provides improved efficiency with reduced power requirements and provides improved thermal management of an isotope target and an electron-to-x-ray converter.

US Patent:

59946601, Nov 30, 1999

Filed:

Nov 19, 1997

Appl. No.:

8/974167

Inventors:

Richard A. Rosenberg - Naperville IL
George A. Goeppner - Orland Park IL
John R. Noonan - Naperville IL
William J. Farrell - Flossmoor IL
Qing Ma - Westmont IL

Assignee:

U.S. Department of Energy - Washington DC

International Classification:

B23K 2800

US Classification:

21912111

Abstract:

A method for joining metal-matrix composites (MMCs) by using high power x-rays as a volumetric heat source is provided. The method involves directing an x-ray to the weld line between two adjacent MMCs materials to create an irradiated region or melt zone. The x-rays have a power density greater than about 10. sup. 4 watts/cm. sup. 2 and provide the volumetric heat required to join the MMC materials. Importantly, the reinforcing material of the metal-matrix composites remains uniformly distributed in the melt zone, and the strength of the MMCs are not diminished. In an alternate embodiment, high power x-rays are used to provide the volumetric heat required to weld metal elements, including metal elements comprised of metal alloys. In an alternate embodiment, high power x-rays are used to provide the volumetric heat required to weld metal elements, including metal elements comprised of metal alloys.