Detector Power Supply Edge-Controlled Reset Signal Integrity
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Solution Overview
Problem
Existing detector systems face challenges in efficiently processing high-energy photon signals due to voltage threshold exceeding issues, leading to signal loss and increased complexity in reset logic and circuitry, particularly in silicon drift detectors.
Innovation Solution
The method employs an edge-controlled reset mechanism that triggers a signal edge at the amplifier's reset input, resetting the output voltage to a fixed minimal value, independent of pulse width, allowing for flexible operation and reduced precision in reset pulse adjustment, thereby maintaining signal integrity and reducing signal loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the output voltage of the amplifier is reset only when it exceeds the maximum voltage, then the maximum voltage range is maintained, but the threshold event cannot be fully evaluated and signal loss occurs
Solution Approach 1:
The patent applies preliminary action by resetting the amplifier output voltage before it reaches the maximum voltage limit. The reset is triggered when the voltage exceeds a threshold that is lower than the maximum voltage, allowing the threshold event to be fully evaluated and processed before the voltage becomes too high to accurately measure. This prevents signal loss while maintaining the ability to evaluate threshold events completely.
2Manufacturing precision
If the reset pulse width is precisely controlled, then the reset accuracy is improved, but the device complexity and difficulty of adjustment increase
Solution Approach 1:
The patent applies self-service by making the reset pulse width automatically adapt to the specific amplifier being reset. The control circuit generates a reset pulse whose width is determined by the amplifier's own characteristics (such as its reset time constant), eliminating the need for external precise adjustment mechanisms. The system self-adjusts the reset pulse parameters based on the amplifier's inherent properties, reducing complexity while maintaining accuracy.
3Use of energy by moving object
If the threshold is set close to the maximum voltage, then the energy efficiency is improved, but the high-energy photon signals cannot be evaluated
Solution Approach 1:
The patent applies segmentation by dividing the voltage range into two distinct thresholds: a first threshold for triggering the reset and a second threshold (maximum voltage) for defining the operational limit. The first threshold is set lower than the maximum voltage, creating a buffer zone that allows high-energy photon signals to be evaluated before the voltage reaches the maximum limit. This segmentation enables both energy efficiency and the ability to handle high-energy photons.
4Loss of information
If the reset is triggered frequently, then the signal loss is reduced, but the productivity and measurement rate decrease
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the reset threshold based on the amplifier's operating state and the detected signal characteristics. The threshold is not fixed but can be modified to optimize the balance between preventing signal loss and maintaining high measurement rates. By adapting the threshold parameter to current operating conditions, the system reduces unnecessary resets while maintaining adequate signal integrity.
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 enhances energy efficiency, reduces signal loss, and simplifies the reset process, ensuring proper measurement statistics by maintaining the threshold event evaluation and extending the working range of the signal processor, even at high photon energies.
Implementation Method 1
Detecting a plurality of detection events by the detector. In particular, charge carriers emerge in the detector in the event of a detection event.
Implementation Method 2
charge carriers emerging in the detector at the detection event are collected by a capacitor of the amplifier, which creates a voltage signal.
Data Source
AI summary
In an embodiment a method for providing electrical power to a detector includes providing a high voltage by a high voltage source, generating ring voltages from the high voltage and supplying one ring voltage to each ring electrode and generating a backside contact voltage from the high voltage and supplying the backside contact voltage to the backside electrode, wherein the ring voltages are uncontrolled and wherein the backside contact voltage is adjusted such that a difference voltage between a first ring voltage and the backside contact voltage is constant.