Charged Particle Beam Deceleration via Phase Synchronization
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Solution Overview
Problem
Existing charged particle beam systems require large-scale shielding and are difficult to miniaturize due to the generation of intense radiation when high-energy electron beams collide with beam dumps, necessitating deceleration to below 10 MeV to prevent radiation hazards, and existing phase adjustment methods are challenging for high-frequency bands, especially X-band, due to vacuum deterioration and electric discharge issues.
Innovation Solution
A charged particle beam decelerating device using a high-frequency cavity with a phase synchronizing device that moves the cavity along the beam orbit or adjusts the beam's orbit length to synchronize the particle beam with the high-frequency electric field, eliminating the need for dedicated phase adjusters and allowing energy conversion or reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high-energy electron beams are used to generate X-rays, then X-ray intensity is improved, but radiation shielding requirements increase and system miniaturization becomes difficult
Solution Approach 1:
The patent converts the harmful high-energy electron beam into useful X-rays through controlled Compton scattering with laser beams, rather than allowing it to collide with beam dumps where it would generate harmful radiation. The high-energy electrons are made to interact productively with photons, transforming potential radiation hazards into beneficial X-ray generation.
Solution Approach 2:
The patent introduces laser beams as an intermediary medium between the electron beam and the beam dump. Instead of direct electron-beam-to-target interaction that produces harmful radiation, the laser beam mediates the energy transfer through Compton scattering, generating X-rays while avoiding the radiation shielding problems associated with direct beam dump collisions.
2Measurement precision
If phase adjusters are used for high-frequency cavity adjustment, then beam synchronization is improved, but vacuum deterioration and electric discharge occur
Solution Approach 1:
The patent replaces mechanical phase adjusters with electronic phase control methods. Instead of physically moving components within the high-frequency cavity (which compromises vacuum and risks discharge), the phase is adjusted electronically through signal processing and timing control of the RF sources, maintaining vacuum integrity while achieving precise beam synchronization.
Solution Approach 2:
The patent achieves phase adjustment by changing electrical parameters (frequency, phase angle, timing) of the RF signals rather than mechanical parameters. This allows precise control of beam-cavity synchronization through electronic parameter modulation, avoiding the need for physical adjustments that would breach vacuum or cause discharge.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables efficient deceleration of high-energy charged particle beams to below 1 MeV without large-scale shielding, simplifying the system and reducing costs by synchronizing the beam with the high-frequency electric field, thereby minimizing radiation leakage and facilitating miniaturization.
Implementation Method 1
synchronizing the charged particle beam in the high-frequency cavity with a phase of a high-frequency electric field
Implementation Method 2
a deflecting magnet deflecting the orbit of a charged particle beam with a magnetic field
Implementation Method 3
a charged particle beam means an electron beam, an ion beam and a positron beam... collision of an electron beam with a laser beam... quasi-monochromatic X-ray resulting from Compton scattering
Data Source
AI summary
A charged particle beam decelerating device includes a high-frequency cavity 34 provided on an orbit of a charged particle beam 1, and a phase synchronizing device 40 for synchronizing the charged particle beam 1 in the high-frequency cavity with a phase of a high-frequency electric field 4. By moving the high-frequency cavity 34 or changing an orbit length of the charged particle beam 1, the charged particle beam in the high-frequency cavity is synchronized with a phase of the high-frequency electric field 4.