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Evaluation of Standard Diodes as Ultra-Fast Opening Switches
A circuit to evaluate the suitability of off-the-shelf diodes as a replacement for drift step recovery diodes should be analyzed and implemented in hardware.
Particle accelerators, such as the LHC at CERN, the SLS 2.0 at PSI,
or the PETRA IV at DESY, require kicker systems to inject or extract
particle bunches into or out of the particle beam. These kicker systems are
driven by high-voltage pulses. For new synchrotrons like the SLS 2.0, the
duration of these pulses must be in the nanosecond range, with rise and
fall times in the subnanosecond range to meet the timing requirements.
These requirements are impossible to achieve with normal semiconductor
devices like MOSFETs and IGBTs. Therefore, pulse generators based on
diodes with ultra-fast turn-off behavior are currently being investigated at
HPE.
Your task in this thesis will be to analyze and implement a circuit topology
to assess the suitability of off-the-shelf diodes for nanosecond pulse generators.
You will simulate the circuit (e.g. with LTspice), design a PCB
with Altium Designer, and program a microcontroller or a FPGA. Finally,
you will evaluate various diodes.
Particle accelerators, such as the LHC at CERN, the SLS 2.0 at PSI, or the PETRA IV at DESY, require kicker systems to inject or extract particle bunches into or out of the particle beam. These kicker systems are driven by high-voltage pulses. For new synchrotrons like the SLS 2.0, the duration of these pulses must be in the nanosecond range, with rise and fall times in the subnanosecond range to meet the timing requirements. These requirements are impossible to achieve with normal semiconductor devices like MOSFETs and IGBTs. Therefore, pulse generators based on diodes with ultra-fast turn-off behavior are currently being investigated at HPE. Your task in this thesis will be to analyze and implement a circuit topology to assess the suitability of off-the-shelf diodes for nanosecond pulse generators. You will simulate the circuit (e.g. with LTspice), design a PCB with Altium Designer, and program a microcontroller or a FPGA. Finally, you will evaluate various diodes.
• Interest in power electronics and
semiconductor devices
• Interest and knowledge in hardware
design (Altium Designer)
Working language: English/German
• Interest in power electronics and semiconductor devices • Interest and knowledge in hardware design (Altium Designer) Working language: English/German
ThesisFlyer_Alternative_Diodes.pdf
