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Title: Method and apparatus for laser-controlled proton beam radiology

Abstract

A proton beam radiology system provides cancer treatment and proton radiography. The system includes an accelerator for producing an H{sup {minus}} beam and a laser source for generating a laser beam. A photodetachment module is located proximate the periphery of the accelerator. The photodetachment module combines the H{sup {minus}} beam and laser beam to produce a neutral beam therefrom within a subsection of the H{sup {minus}} beam. The photodetachment module emits the neutral beam along a trajectory defined by the laser beam. The photodetachment module includes a stripping foil which forms a proton beam from the neutral beam. The proton beam is delivered to a conveyance segment which transports the proton beam to a patient treatment station. The photodetachment module further includes a laser scanner which moves the laser beam along a path transverse to the cross-section of the H{sup {minus}} beam in order to form the neutral beam in subsections of the H{sup {minus}} beam. As the scanning laser moves across the H{sup {minus}} beam, it similarly varies the trajectory of the proton beam emitted from the photodetachment module and in turn varies the target location of the proton beam upon the patient. Intensity modulation of the proton beammore » can also be achieved by controlling the output of the laser. 9 figs.« less

Inventors:
Issue Date:
Research Org.:
Universities Research Association
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
672618
Patent Number(s):
5,760,395
Application Number:
PAN: 8-634,242; TRN: 99:001068
Assignee:
Universities Research Association, Inc., Washington, DC (United States)
DOE Contract Number:  
AC02-76CH03000
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 2 Jun 1998
Country of Publication:
United States
Language:
English
Subject:
55 BIOLOGY AND MEDICINE, BASIC STUDIES; 43 PARTICLE ACCELERATORS; BIOMEDICAL RADIOGRAPHY; RADIOTHERAPY; PROTON BEAMS; NEOPLASMS; BEAM STRIPPERS; ACCELERATORS; BEAM TRANSPORT; ACCELERATOR FACILITIES; LASER RADIATION

Citation Formats

Johnstone, C J. Method and apparatus for laser-controlled proton beam radiology. United States: N. p., 1998. Web.
Johnstone, C J. Method and apparatus for laser-controlled proton beam radiology. United States.
Johnstone, C J. Tue . "Method and apparatus for laser-controlled proton beam radiology". United States.
@article{osti_672618,
title = {Method and apparatus for laser-controlled proton beam radiology},
author = {Johnstone, C J},
abstractNote = {A proton beam radiology system provides cancer treatment and proton radiography. The system includes an accelerator for producing an H{sup {minus}} beam and a laser source for generating a laser beam. A photodetachment module is located proximate the periphery of the accelerator. The photodetachment module combines the H{sup {minus}} beam and laser beam to produce a neutral beam therefrom within a subsection of the H{sup {minus}} beam. The photodetachment module emits the neutral beam along a trajectory defined by the laser beam. The photodetachment module includes a stripping foil which forms a proton beam from the neutral beam. The proton beam is delivered to a conveyance segment which transports the proton beam to a patient treatment station. The photodetachment module further includes a laser scanner which moves the laser beam along a path transverse to the cross-section of the H{sup {minus}} beam in order to form the neutral beam in subsections of the H{sup {minus}} beam. As the scanning laser moves across the H{sup {minus}} beam, it similarly varies the trajectory of the proton beam emitted from the photodetachment module and in turn varies the target location of the proton beam upon the patient. Intensity modulation of the proton beam can also be achieved by controlling the output of the laser. 9 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {6}
}