US 9,854,661 B2 · Charged particle accelerator systems including beam dose and energy compensation and methods therefor

Abstract

A method of operating an acceleration system comprises injecting charged particles into an RF accelerator, providing RF power to the accelerator, and accelerating the injected charged particles. The accelerated charged particles may impact a target to generate radiation. The RF power is based, at least in part, on past performance of the system, to compensate, at least partially, for dose and/or energy instability. A controller may provide a compensated control voltage (“CCV”) to an electric power source based on the past performance, to provide compensated electric power to the RF source. A decreasing CCV, such as an exponentially decreasing CCV, may be provided to the electric power source during beam on time periods. The CCV to be provided may be increased, such as exponentially increased toward a maximum value, during beam off time periods. The controller may be configured by a compensation circuit and/or software. Systems are also described.

Claims20

Dependent claims

A stabilized radio-frequency (“RF”) accelerator system, comprising:

an RF accelerator to accelerate charged particles;
an RF source coupled to the accelerator to provide RF power into the accelerator;
a charged particle source coupled to the accelerator to inject charged particles into the accelerator;
an electric power source coupled to the RF source and the charged particle source to provide electric power thereto;
and
a controller to control operation of the electric power source, the controller configured to provide a compensated control voltage to the electric power source;
wherein:
the electric power provided to the RF source by the electric power source is based, at least in part, on the compensated control voltage;
and
the compensated control voltage is based, at least in part, on past performance of the system.

7 more elements

A stabilized radio-frequency (“RF”) accelerator system, comprising:

an RF accelerator to accelerate charged particles;
an RF source coupled to the accelerator to provide RF power into the accelerator;
a charged particle source coupled to the accelerator to inject charged particles into the accelerator;
an electric power source coupled to the RF source and the charged particle source to provide electric power thereto;
memory to store a nominal control voltage value;
and
a controller configured to control operation of the electric power source;
the memory further storing a software program configured to cause the controller to provide a compensated control voltage to the electric power source based, at least in part, on the nominal control voltage value and past performance of the system.

5 more elements

Dependencies are inferred from the claim text.

Charged particle accelerator systems including beam dose and energy compensation and methods therefor

Life of this patent

Charged particle accelerator systems including beam dose and energy compensation and methods therefor

Life of this patent

Abstract

Claims20