Xiaodong Dong Ding

US Patent:

6657391, Dec 2, 2003

Filed:

Feb 7, 2002

Appl. No.:

10/072768

Inventors:

Xiaodong Ding - El Cerrito CA
Chong Yao - Pacheco CA

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

H01J 2510

US Classification:

315 541, 315505

Abstract:

A cavity for use in an accelerator is formed by an inner wall including at least two different materials. According to embodiments of the present invention, a portion of the structure forming the inner wall of the cavity includes a first material (e. g. , copper) while another portion forming the inner wall of the cavity includes a second material (e. g. , steel). Using different materials for different portions of the inner walls forming a cavity may cause different Q-factors for the cavity while the shape of the cavity remains constant.

US Patent:

7005809, Feb 28, 2006

Filed:

Nov 26, 2003

Appl. No.:

10/723944

Inventors:

Kenneth Whitham - Alamo CA, US
Xiaodong Ding - Hercules CA, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

H05H 7/00

US Classification:

315500, 315506, 315 521

Abstract:

Some embodiments include operation of an accelerator waveguide to output first particles from a tuned end cavity of the accelerator waveguide at a first energy, detuning of the end cavity, and operation of the accelerator waveguide to output second particles from the detuned end cavity at a second energy.

US Patent:

20030025456, Feb 6, 2003

Filed:

Jan 4, 2002

Appl. No.:

10/039424

Inventors:

Xiaodong Ding - El Cerrito CA, US
Kenneth Whitham - Alamo CA, US

International Classification:

H01J025/10

US Classification:

315/005410

Abstract:

A method, system, and apparatus for providing reduced dark current in a linear accelerator includes a cavity having an input aperture and an output aperture, and a particle source coupled to the input aperture, the input aperture having a radius greater than a radius of the output aperture.