Automated Electron Beam Alignment for Photocathode Guns
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for aligning the incident axis of electron guns with photocathodes lack automation, relying on manual adjustments and are inefficient, especially when the electron gun is first mounted or needs recalibration over time.
Innovation Solution
An automated incident axis alignment method for electron guns with photocathodes, involving an excitation light radiation step, adjustment of the excitation light position, and detection of the electron beam center, which includes deflection and expansion of the electron beam irradiation region to align with the electron optical system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual alignment methods are used for electron guns with photocathodes, then alignment can be performed, but the process is time-consuming and inefficient
Solution Approach 1:
The system performs self-alignment by automatically detecting the electron beam position and adjusting the excitation light irradiation position accordingly, eliminating the need for manual intervention and significantly reducing alignment time
Solution Approach 2:
The alignment process uses feedback from beam position detection to continuously adjust the excitation light position, creating a closed-loop system that automatically achieves and maintains optimal alignment
2Measurement precision
If manual alignment adjustments are performed, then alignment can be achieved, but the precision and consistency are limited by operator skill
Solution Approach 1:
The patent replaces manual mechanical adjustment operations with an automated control system that uses sensors to detect beam position and actuators to adjust the excitation light position, achieving higher precision and consistency
Solution Approach 2:
The system introduces intermediate components including beam position detection devices and control mechanisms that mediate between the electron beam and the excitation light source, enabling precise automated alignment
3Manufacturing precision
If the electron beam is deflected and the irradiation region is expanded during alignment, then alignment accuracy is improved, but the system complexity increases
Solution Approach 1:
The system employs dynamic adjustment capabilities where the electron beam deflection and irradiation region expansion are continuously可调 during the alignment process, allowing the system to adapt to different alignment scenarios and achieve high precision
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 method enables precise and efficient automatic alignment of the electron beam with the incident axis of the electron optical system, reducing manual intervention and improving alignment accuracy and speed.
Implementation Method 1
an electron gun equipped with a photocathode, the electron gun being capable of emitting an electron beam in a first state due to the photocathode being irradiated with excitation light
Data Source
AI summary
The present invention addresses the problem of providing a method for automatically adjusting an electron beam emitted from an electron gun equipped with a photocathode to the incident axis of an electron optical system.[Solution] An incident axis alignment method for an electron gun equipped with a photocathode,the electron gun being capable of emitting an electron beam in a first state due to the photocathode being irradiated with excitation light, andthe method including at leastan excitation light radiation step,a first excitation light irradiation position adjustment step for changing the irradiation position of the excitation light on the photocathode and adjusting the irradiation position of the excitation light, andan electron beam center detection step for detecting whether a center line of the electron beam in the first state coincides with an incident axis of an electron optical system.